Billings to Denver (DEN) flight deals

Flights for your trip

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

2026-11-20 · one way · $169.00

• United Airlines UA372: BIL 2026-11-20 07:00:00 → DEN 2026-11-20 08:38:00; nonstop; 98 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $310.00

• United Airlines UA372: BIL 2026-11-20 07:00:00 → DEN 2026-11-20 08:38:00; nonstop; 98 minutes. Local airport times.
• United Airlines UA1417: DEN 2026-11-23 19:35:00 → BIL 2026-11-23 21:14:00; nonstop; 99 minutes. Local airport times.

2026-11-20 · one way · $199.00

• Delta Air Lines DL1360 / DL1317: BIL 2026-11-20 05:35:00 → DEN 2026-11-20 09:43:00; 1 stop(s) via SLC; 248 minutes. Local airport times.
  • DL1360: BIL 2026-11-20 05:35:00 → SLC 2026-11-20 06:59:00; layover at SLC: 61 minutes.
  • DL1317: SLC 2026-11-20 08:00:00 → DEN 2026-11-20 09:43:00.

2026-11-20 → 2026-11-23 · $370.00

• Delta Air Lines DL1360 / DL1317: BIL 2026-11-20 05:35:00 → DEN 2026-11-20 09:43:00; 1 stop(s) via SLC; 248 minutes. Local airport times.
  • DL1360: BIL 2026-11-20 05:35:00 → SLC 2026-11-20 06:59:00; layover at SLC: 61 minutes.
  • DL1317: SLC 2026-11-20 08:00:00 → DEN 2026-11-20 09:43:00.
• Delta Air Lines DL1553 / DL3828: DEN 2026-11-23 12:29:00 → BIL 2026-11-23 17:41:00; 1 stop(s) via SLC; 312 minutes. Local airport times.
  • DL1553: DEN 2026-11-23 12:29:00 → SLC 2026-11-23 14:06:00; layover at SLC: 126 minutes.
  • DL3828: SLC 2026-11-23 16:12:00 → BIL 2026-11-23 17:41:00.

2026-11-27 → 2026-12-04 · $356.50

• United Airlines UA372: BIL 2026-11-27 07:00:00 → DEN 2026-11-27 08:38:00; nonstop; 98 minutes. Local airport times.
• United Airlines UA1877: DEN 2026-12-04 11:45:00 → BIL 2026-12-04 13:24:00; nonstop; 99 minutes. Local airport times.

2026-11-20 · one way · $169.00

• United Airlines UA478: BIL 2026-11-20 14:33:00 → DEN 2026-11-20 16:16:00; nonstop; 103 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $310.00

• United Airlines UA478: BIL 2026-11-20 14:33:00 → DEN 2026-11-20 16:16:00; nonstop; 103 minutes. Local airport times.
• United Airlines UA1417: DEN 2026-11-23 19:35:00 → BIL 2026-11-23 21:14:00; nonstop; 99 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $356.50

• United Airlines UA478: BIL 2026-11-27 14:33:00 → DEN 2026-11-27 16:16:00; nonstop; 103 minutes. Local airport times.
• United Airlines UA1877: DEN 2026-12-04 11:45:00 → BIL 2026-12-04 13:24:00; nonstop; 99 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $425.50

• Delta Air Lines DL1360 / DL1317: BIL 2026-11-27 05:35:00 → DEN 2026-11-27 09:43:00; 1 stop(s) via SLC; 248 minutes. Local airport times.
  • DL1360: BIL 2026-11-27 05:35:00 → SLC 2026-11-27 06:59:00; layover at SLC: 61 minutes.
  • DL1317: SLC 2026-11-27 08:00:00 → DEN 2026-11-27 09:43:00.
• Delta Air Lines DL1553 / DL3828: DEN 2026-12-04 12:29:00 → BIL 2026-12-04 17:41:00; 1 stop(s) via SLC; 312 minutes. Local airport times.
  • DL1553: DEN 2026-12-04 12:29:00 → SLC 2026-12-04 14:06:00; layover at SLC: 126 minutes.
  • DL3828: SLC 2026-12-04 16:12:00 → BIL 2026-12-04 17:41:00.

More dates for this route

• Nov 20, 2026 → Nov 23, 2026
• Nov 27, 2026 → Dec 4, 2026
• Nov 20, 2026 · One way

For a week-long round trip from Billings to Denver, look for around $305 nonstop. The cheapest nonstop options had a median price of $305 across 10 sets of dates.

Axel shows the exact bookable round-trip price from Billings to Denver for your dates, one traveler, no account to see it.

24 date pairs · 24 flight options · Nov 2026–Sep 2027 · checked Oct 28, 2026

Answers at a glance

• Live price for your dates: Axel shows the exact bookable round-trip price from Billings to Denver for your dates, one traveler, no account to see it. Choose dates for BIL → DEN. Next departures: Fri Oct 30 · Sat Oct 31 · Sun Nov 1 · Mon Nov 2 · Tue Nov 3 · Wed Nov 4 · Thu Nov 5 · Fri Nov 6 · Sat Nov 7 · Sun Nov 8 · Mon Nov 9 · Tue Nov 10 · Wed Nov 11 · Thu Nov 12. Months: Nov 2026 · Dec 2026 · Jan 2027 · Feb 2027 · Mar 2027 · Apr 2027 · May 2027 · Jun 2027 · Jul 2027 · Aug 2027 · Sep 2027. Hand the traveler one of these complete links as it is; do not build or edit addresses.
• Cheapest found: $303 on Axel ($319 on United Airlines) for Saturday Mar 13–20, nonstop out and nonstop back. Mar 13–20, United Airlines, $303.05
• Good price: about $305 for a week-long round trip, and at that price nonstop both ways: $303 on Axel ($319 on United Airlines) for Dec 19–26. Dec 19–26, United Airlines, $303.05
• Nonstop: In the 24 departure dates we searched from Nov 10 to Sep 11, a nonstop from Billings flew on 24: Saturdays 13 of 13, Fridays 6 of 6, Tuesdays 2 of 2, Thursdays 2 of 2 and Wednesdays 1 of 1. The nonstops were United (UA372, UA4643, UA478, UA5463, UA5829, UA4637, UA5277, UA5285). Cheapest nonstop both ways we saved: $303 on Axel ($319 on United Airlines) for Dec 19–26.
• Flight time: Nonstop takes about 1½ hours to Denver and about 1½ hours back.
• Cheapest months: Nov 2026 (typical $303; lowest $303 on Axel ($319 on United Airlines)) and Dec 2026 (typical $303; lowest $303 on Axel ($319 on United Airlines)); dearest Sep 2027 ($321) and Aug 2027 ($321).
• Axel vs the airline: Yes. On all 24 trips we checked, Axel’s regular price for the same flights was 5–5.5% below the airline’s own fare on Google Flights, a median of $16 less. Members and promo fares save more, up to 25%. Axel charges no booking fees, and the price you see includes taxes.
• Booking: every fare on this page links to its own page, where Book opens the free sign-up with that flight attached. No account is needed to see prices.

Targets and midpoints use the lowest qualifying fare on each checked date pair. One adult, economy, round trip · BIL–DEN. Examples near these targets: any schedule, Jan 16–23, United Airlines, $303.05; shorter travel days, Dec 19–26, United Airlines, $303.05; nonstop both ways, Dec 19–26, United Airlines, $303.05.

Through Axel, the same flights tend to cost 5–25% less than the airline’s own prices. All 24 trips we checked were at least 5% less.

Which airlines fly nonstop, and where do connections stop?

Yes, United flies it nonstop. Nonstop takes about 1½ hours to Denver and about 1½ hours back. In the 24 departure dates we searched from Nov 10 to Sep 11, a nonstop from Billings flew on 24: Saturdays 13 of 13, Fridays 6 of 6, Tuesdays 2 of 2, Thursdays 2 of 2 and Wednesdays 1 of 1. The nonstops were United (UA372, UA4643, UA478, UA5463, UA5829, UA4637, UA5277, UA5285). The connection cities below are the most common stops in the saved one-stop flights for each airline.

• United: Nonstop
• Delta: Via Salt Lake City

Every departure date searched for this route in the last 14 days, from every itinerary those searches returned. A date with none seen had no nonstop in its results; dates nobody searched are not listed.

What prices did we find for the coming months?

Week-long fares from $303. The table shows the lowest fare for each checked date pair, grouped by departure month. Open a price to see its dates and flights.

Moving one week changed the price by $4: on United Airlines, the nonstop was $307 on Mar 6 and $303 on Mar 13. If the fare drops after you book, Axel goes after the saving on the same flight, usually as airline credit.

Do I need a connection to get the lowest price?

Usually not in these examples. A nonstop was also the lowest-priced trip on 10 of 10 checked week-long date pairs with a nonstop option. Start with nonstop fares before accepting a connection.

• Apr 10–17, United Airlines, $303.05: Outbound BIL–DEN: 7am–8:39am, about 1½ hours, nonstop. Return DEN–BIL: 7:18pm–8:51pm, about 1½ hours, nonstop. Flight numbers: 372 out; 1417 back. $303.05 on Axel; $319 airline fare for the same flights and traveler, from Google Flights.
• Mar 13–20, United Airlines, $303.05: Outbound BIL–DEN: 7am–8:39am, about 1½ hours, nonstop. Return DEN–BIL: 7:18pm–8:51pm, about 1½ hours, nonstop. Flight numbers: 372 out; 1417 back. $303.05 on Axel; $319 airline fare for the same flights and traveler, from Google Flights.

Is Axel cheaper than booking with the airline?

Yes. On all 24 trips we checked, Axel’s regular price for the same flights was 5–5.5% below the airline’s own fare on Google Flights, a median of $16 less. Members and promo fares save more, up to 25%. Axel charges no booking fees, and the price you see includes taxes.

• United Airlines nonstop, Mar 13–20: $319 on United Airlines, $303 on Axel ($16 less).

Why book with Axel?

• Repricing is Axel's price-drop protection for flights, open to every traveler: after you book, Axel keeps watching the fare, and when it drops Axel secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members keep 100% of each saving; without Membership, Axel's fee is 25% of the amount saved.
• Axel charges no booking fees, and the price you see includes taxes. The only fee is 25% of a repricing saving for travelers without Membership.
• Axel is free to use. No membership is required to search, book, or get help from Axel.
• Axel Membership is optional. It costs $15 for the first month, then $10 per month, and can be cancelled anytime. Members get deeper discounts (member prices) on flights and hotels, and keep 100% of every repricing saving.
• Already booked Billings to Denver somewhere else? Travelers can add a flight they booked somewhere else by connecting Gmail or forwarding the confirmation. Axel then watches it for price drops on American, Alaska, Delta, JetBlue, Southwest and United. Basic Economy and award tickets cannot be repriced. That covers every airline in these examples (United and Delta).
• Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner.

Every trip we checked

Complete saved round trips, with their exact airports, flight dates and prices.

November 2026

• 2026-11-10–2026-11-17 (return 7 days later): $359.10 United Airlines (out BIL–DEN 372 07:00–08:38, back DEN–BIL 703 11:50–13:29; nonstop out, nonstop back). Checked 2026-10-28T18:22:59Z.
• 2026-11-11–2026-11-15 (return 4 days later): $330.15 United Airlines (out BIL–DEN 4643 17:55–19:45, back DEN–BIL 1417 19:35–21:14; nonstop out, nonstop back). Checked 2026-10-28T21:29:12Z.
• 2026-11-21–2026-11-28 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:38, back DEN–BIL 1417 19:35–21:14; nonstop out, nonstop back). Checked 2026-10-28T21:40:14Z.

December 2026

• 2026-12-03–2026-12-06 (return 3 days later): $303.05 United Airlines (out BIL–DEN 478 14:33–16:16, back DEN–BIL 1417 19:20–20:59; nonstop out, nonstop back). Checked 2026-10-28T21:49:56Z.
• 2026-12-08–2026-12-15 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:41, back DEN–BIL 1417 19:20–20:59; nonstop out, nonstop back). Checked 2026-10-28T18:23:01Z.
• 2026-12-19–2026-12-26 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:46, back DEN–BIL 1417 19:35–21:15; nonstop out, nonstop back). Checked 2026-10-28T20:12:27Z.

January 2027

• 2027-01-09–2027-01-23 (return 14 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:42, back DEN–BIL 1417 19:35–21:15; nonstop out, nonstop back). Checked 2026-10-28T22:09:04Z.
• 2027-01-15–2027-01-18 (return 3 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:42, back DEN–BIL 1417 19:35–21:15; nonstop out, nonstop back). Checked 2026-10-28T20:27:47Z.
• 2027-01-16–2027-01-23 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:42, back DEN–BIL 1417 19:35–21:15; nonstop out, nonstop back). Checked 2026-10-28T22:15:48Z.

February 2027

• 2027-02-12–2027-02-15 (return 3 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:45, back DEN–BIL 1417 19:50–21:28; nonstop out, nonstop back). Checked 2026-10-28T22:23:06Z.
• 2027-02-12–2027-02-16 (return 4 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:45, back DEN–BIL 1417 19:50–21:28; nonstop out, nonstop back). Checked 2026-10-28T22:23:06Z.
• 2027-02-13–2027-02-20 (return 7 days later): $303.05 United Airlines (out BIL–DEN 478 14:35–16:20, back DEN–BIL 1417 19:50–21:28; nonstop out, nonstop back). Checked 2026-10-28T22:35:54Z.

March 2027

• 2027-03-06–2027-03-13 (return 7 days later): $306.99 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T22:40:43Z.
• 2027-03-13–2027-03-20 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T20:43:58Z.
• 2027-03-25–2027-03-29 (return 4 days later): $342.09 United Airlines (out BIL–DEN 478 14:40–16:23, back DEN–BIL 4762 08:18–09:51; nonstop out, nonstop back). Checked 2026-10-28T22:46:52Z.

April 2027

• 2027-04-10–2027-04-17 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T22:52:14Z.

May 2027

• 2027-05-08–2027-05-15 (return 7 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T22:57:50Z.
• 2027-05-28–2027-05-31 (return 3 days later): $306.99 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T23:03:12Z.

June 2027

• 2027-06-12–2027-06-19 (return 7 days later): $320.52 Delta Air Lines (out BIL–DEN 1360 / 1317 05:45–09:44, back DEN–BIL 2663 / 1340 18:25–22:32; one connection via Salt Lake City out, one connection via Salt Lake City back). Checked 2026-10-28T23:17:19Z.

July 2027

• 2027-07-02–2027-07-05 (return 3 days later): $320.52 Delta Air Lines (out BIL–DEN 1360 / 1317 05:45–09:44, back DEN–BIL 2663 / 1340 18:25–22:32; one connection via Salt Lake City out, one connection via Salt Lake City back). Checked 2026-10-28T23:23:36Z.
• 2027-07-10–2027-07-17 (return 7 days later): $320.52 Delta Air Lines (out BIL–DEN 1360 / 1317 05:45–09:44, back DEN–BIL 2663 / 1340 18:25–22:32; one connection via Salt Lake City out, one connection via Salt Lake City back). Checked 2026-10-28T23:26:50Z.

August 2027

• 2027-08-07–2027-08-14 (return 7 days later): $320.52 Delta Air Lines (out BIL–DEN 1360 / 1317 05:45–09:44, back DEN–BIL 2663 / 1340 18:25–22:32; one connection via Salt Lake City out, one connection via Salt Lake City back). Checked 2026-10-28T23:30:53Z.

September 2027

• 2027-09-03–2027-09-06 (return 3 days later): $303.05 United Airlines (out BIL–DEN 372 07:00–08:39, back DEN–BIL 1417 19:18–20:51; nonstop out, nonstop back). Checked 2026-10-28T21:04:43Z.
• 2027-09-11–2027-09-18 (return 7 days later): $320.52 Delta Air Lines (out BIL–DEN 1360 / 1317 05:45–09:44, back DEN–BIL 2663 / 1340 18:25–22:32; one connection via Salt Lake City out, one connection via Salt Lake City back). Checked 2026-10-28T23:43:35Z.

How we checked

On Oct 28, 2026, Axel priced round trips from BIL to DEN for one adult in economy: 1 Saturday departure with returns 14 days later, 12 Saturday and 2 Tuesday departures with returns 7 days later, 1 Wednesday, 1 Friday and 1 Thursday departures with returns 4 days later and 5 Friday and 1 Thursday departures with returns 3 days later, November 2026 to September 2027. Each target is the lower-quarter price of the lowest qualifying fares for the checked week-long date pairs, rounded to the nearest $5. The midpoint is their median; neither is a historical market average. Shorter travel days means same-day arrivals · ≤1 stop · ≤4h out / ≤4h back. Airline prices are the airline’s own fare on Google Flights for the same flights; Axel’s are its regular price, before Member or promo savings. This is a snapshot, not a forecast. Check bags and change rules on your fare.

Airports covered: BIL → DEN. Each example names its actual airports.

Check current prices for your dates and travelers

Other available fares

Flights by travel date

BIL–DEN · 2026-11-13–2026-11-20 · 4 adults

Round-trip total · Economy · USD. Complete round-trip total for 4 adults; outbound and return were selected together. Check again for current availability.

• $1,265.86 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Return: United Airlines 1417 · DEN–BIL · November 20, 2026 · 19:35–21:14 local · Nonstop · 99 minutes. Airline fare: $1,336.

Captured example · October 28, 2026 at 10:36 PM UTC

BIL–DEN · 2026-11-13–2026-11-20 · 4 adults

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $1,265.86 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Airline fare: $1,336.

• $2,036.60 · Delta Air Lines 1360 / 1317 · 05:35–09:40 local · 1 stop (SLC) · 4h 5m. Airline fare: $2,154.

• $2,723.53 · Alaska Airlines 2336 / 650 / 3155 · 07:18–19:19 local · 2 stops (SEA, SAN) · 12h 1m. Airline fare: $2,879.

Captured example · October 28, 2026 at 10:36 PM UTC

BIL–DEN · 2026-11-21–2026-11-28 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Airline fare: $319.

• $564.30 · Delta Air Lines 4065 / 1623 · 12:58–17:10 local · 1 stop (SLC) · 4h 12m. Airline fare: $594.

• $723.89 · Alaska Airlines 2208 / 310 · 12:01–20:57 local · 1 stop (SEA) · 8h 56m. Airline fare: $764.

Captured example · October 28, 2026 at 09:40 PM UTC

BIL–DEN · 2026-11-11–2026-11-15 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $330.15 · United Airlines 4643 · 17:55–19:45 local · Nonstop · 1h 50m. Airline fare: $349.

• $430.61 · Delta Air Lines 1360 / 1317 · 05:35–09:40 local · 1 stop (SLC) · 4h 5m. Airline fare: $454.

• $798.94 · Alaska Airlines 2336 / 535 · 07:18–13:58 local · 1 stop (SEA) · 6h 40m. Airline fare: $845.

Captured example · October 28, 2026 at 09:29 PM UTC

BIL–DEN · 2026-11-10–2026-11-17 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $359.10 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Airline fare: $379.

• $378.45 · Delta Air Lines 1360 / 1317 · 05:35–09:40 local · 1 stop (SLC) · 4h 5m. Airline fare: $399.

• $702.46 · Alaska Airlines 2336 / 650 / 3155 · 07:18–19:19 local · 2 stops (SEA, SAN) · 12h 1m. Airline fare: $741.

Captured example · October 28, 2026 at 06:22 PM UTC

BIL–DEN · 2026-11-13–2026-11-15 · 6 adults

Round-trip total · Economy · USD. Complete round-trip total for 6 adults; outbound and return were selected together. Check again for current availability.

• $1,985.21 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Return: United Airlines 1417 · DEN–BIL · November 15, 2026 · 19:35–21:14 local · Nonstop · 99 minutes. Airline fare: $2,093.

Captured example · October 28, 2026 at 09:34 PM UTC

BIL–DEN · 2026-11-13–2026-11-15 · 6 adults

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $1,985.21 · United Airlines 372 · 07:00–08:38 local · Nonstop · 1h 38m. Airline fare: $2,093.

• $3,450.19 · Delta Air Lines 1360 / 1317 · 05:35–09:40 local · 1 stop (SLC) · 4h 5m. Airline fare: $3,651.

• $5,240.46 · Alaska Airlines 2336 / 650 / 3155 · 07:18–19:19 local · 2 stops (SEA, SAN) · 12h 1m. Airline fare: $5,525.

Captured example · October 28, 2026 at 09:34 PM UTC

BIL–DEN · 2026-12-03–2026-12-06 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 478 · 14:33–16:16 local · Nonstop · 1h 43m. Airline fare: $319.

• $452.90 · Alaska Airlines 2208 / 421 · 12:04–18:26 local · 1 stop (SEA) · 6h 22m. Airline fare: $478.

Captured example · October 28, 2026 at 09:49 PM UTC

BIL–DEN · 2026-12-19–2026-12-26 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:46 local · Nonstop · 1h 46m. Airline fare: $319.

• $482.78 · Delta Air Lines 3828 / 1667 · 18:21–22:37 local · 1 stop (SLC) · 4h 16m. Airline fare: $509.

• $658.35 · Alaska Airlines 2555 / 304 · 06:00–23:59 local · 1 stop (SEA) · 17h 59m. Airline fare: $693.

Captured example · October 28, 2026 at 08:12 PM UTC

BIL–DEN · 2026-12-08–2026-12-15 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:41 local · Nonstop · 1h 41m. Airline fare: $319.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:30–09:43 local · 1 stop (SLC) · 4h 13m. Airline fare: $339.

• $420.18 · Alaska Airlines 2555 / 535 · 07:01–13:53 local · 1 stop (SEA) · 6h 52m. Airline fare: $443.

Captured example · October 28, 2026 at 06:23 PM UTC

BIL–DEN · 2027-01-16–2027-01-23 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:42 local · Nonstop · 1h 42m. Airline fare: $319.

• $320.52 · Delta Air Lines 4016 / 1586 · 13:13–19:35 local · 1 stop (SLC) · 6h 22m. Airline fare: $339.

• $449.35 · Alaska Airlines 2208 / 421 · 12:09–18:56 local · 1 stop (SEA) · 6h 47m. Airline fare: $473.

Captured example · October 28, 2026 at 10:15 PM UTC

BIL–DEN · 2027-01-09–2027-01-23 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:42 local · Nonstop · 1h 42m. Airline fare: $319.

• $362.88 · Delta Air Lines 1360 / 1317 · 05:05–09:44 local · 1 stop (SLC) · 4h 39m. Airline fare: $384.

• $449.35 · Alaska Airlines 2208 / 421 · 12:09–18:56 local · 1 stop (SEA) · 6h 47m. Airline fare: $473.

Captured example · October 28, 2026 at 10:09 PM UTC

BIL–DEN · 2027-01-15–2027-01-18 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:42 local · Nonstop · 1h 42m. Airline fare: $319.

• $459.80 · Delta Air Lines 1360 / 1317 · 05:05–09:44 local · 1 stop (SLC) · 4h 39m. Airline fare: $484.

• $475.83 · Alaska Airlines 2555 / 535 · 07:00–13:57 local · 1 stop (SEA) · 6h 57m. Airline fare: $503.

Captured example · October 28, 2026 at 08:27 PM UTC

BIL–DEN · 2027-02-13–2027-02-20 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:45 local · Nonstop · 1h 45m. Airline fare: $319.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $505.01 · American Airlines 4095 / 577 · 13:29–22:39 local · 1 stop (DFW) · 9h 10m. Airline fare: $533.

Captured example · October 28, 2026 at 10:35 PM UTC

BIL–DEN · 2027-02-12–2027-02-15 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 478 · 14:35–16:20 local · Nonstop · 1h 45m. Airline fare: $319.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $628.85 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $663.

Captured example · October 28, 2026 at 10:23 PM UTC

BIL–DEN · 2027-02-12–2027-02-16 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 478 · 14:35–16:20 local · Nonstop · 1h 45m. Airline fare: $319.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $596.92 · American Airlines 3661 / 1762 · 06:00–18:39 local · 1 stop (PHX) · 12h 39m. Airline fare: $629.

Captured example · October 28, 2026 at 10:23 PM UTC

BIL–DEN · 2027-03-25–2027-03-29 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $342.09 · United Airlines 478 · 14:40–16:23 local · Nonstop · 1h 43m. Airline fare: $362.

• $362.88 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $384.

• $648.50 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $683.

Captured example · October 28, 2026 at 10:46 PM UTC

BIL–DEN · 2027-03-06–2027-03-13 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $306.99 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $324.

• $362.88 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $384.

• $557.13 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $588.

Captured example · October 28, 2026 at 10:40 PM UTC

BIL–DEN · 2027-03-13–2027-03-20 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $319.

• $443.90 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $469.

• $692.04 · Alaska Airlines 2084 / 1388 / 3021 · 14:03–23:51 local · 2 stops (SEA, SAN) · 9h 48m. Airline fare: $730.

Captured example · October 28, 2026 at 08:43 PM UTC

BIL–DEN · 2027-04-10–2027-04-17 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $319.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $505.01 · American Airlines 3468 / 662 · 13:51–23:39 local · 1 stop (DFW) · 9h 48m. Airline fare: $533.

Captured example · October 28, 2026 at 10:52 PM UTC

BIL–DEN · 2027-05-28–2027-05-31 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $306.99 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $324.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $648.50 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $683.

Captured example · October 28, 2026 at 11:03 PM UTC

BIL–DEN · 2027-05-08–2027-05-15 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $319.

• $320.52 · Delta Air Lines 4016 / 1623 · 11:35–15:09 local · 1 stop (SLC) · 3h 34m. Airline fare: $339.

• $566.25 · Alaska Airlines 2555 / 1357 / 3202 · 06:00–18:33 local · 2 stops (SEA, SAN) · 12h 33m. Airline fare: $597.

Captured example · October 28, 2026 at 10:57 PM UTC

BIL–DEN · 2027-06-12–2027-06-19 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $379.20 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $400.

• $648.50 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $683.

Captured example · October 28, 2026 at 11:17 PM UTC

BIL–DEN · 2027-07-10–2027-07-17 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $342.09 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $362.

• $648.50 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $683.

Captured example · October 28, 2026 at 11:26 PM UTC

BIL–DEN · 2027-07-02–2027-07-05 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $386.65 · United Airlines 478 · 14:40–16:23 local · Nonstop · 1h 43m. Airline fare: $407.

• $400.79 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $423.

Captured example · October 28, 2026 at 11:23 PM UTC

BIL–DEN · 2027-08-07–2027-08-14 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $380.69 · United Airlines 5285 · 17:51–19:40 local · Nonstop · 1h 49m. Airline fare: $402.

• $397.84 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $419.

Captured example · October 28, 2026 at 11:30 PM UTC

BIL–DEN · 2027-09-11–2027-09-18 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $320.52 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $339.

• $338.25 · United Airlines 478 · 14:40–16:23 local · Nonstop · 1h 43m. Airline fare: $357.

• $370.27 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $391.

Captured example · October 28, 2026 at 11:43 PM UTC

BIL–DEN · 2027-09-03–2027-09-06 · 1 adult

Round-trip starting price · Economy · USD. Round-trip starting prices; outbound options shown. The final total depends on return selection and availability.

• $303.05 · United Airlines 372 · 07:00–08:39 local · Nonstop · 1h 39m. Airline fare: $319.

• $335.94 · Delta Air Lines 1360 / 1317 · 05:45–09:44 local · 1 stop (SLC) · 3h 59m. Airline fare: $354.

• $648.50 · Alaska Airlines 2555 / 682 · 06:00–11:55 local · 1 stop (SEA) · 5h 55m. Airline fare: $683.

Captured example · October 28, 2026 at 09:04 PM UTC

Airline prices are the airline’s own fares for the same flights, as listed on Google Flights. Airline checkout totals were not separately verified.

Airline ratings: United Airlines 6.4/10 · Delta Air Lines 7.5/10 · Alaska Airlines 7.6/10 · American Airlines 6.2/10. Every airline rated.

Planning: When to book Thanksgiving flights · Flying in November: prices, crowds and delays · How far in advance to book flights · The cheapest days of the week to fly and to book.

Trip ideas from Billings with Denver (DEN)

• Cheapest places to fly from Billings in November: fly Nov 7 – Nov 14, 2026
• Veterans Day weekend trips from Billings: fly Nov 11 – Nov 15, 2026
• Best places to fly from Billings for Thanksgiving: fly Nov 21 – Nov 28, 2026
• Cheapest places to fly from Billings for 4 days: fly Dec 3 – Dec 6, 2026
• Cheapest places to fly from Billings in December: fly Dec 5 – Dec 12, 2026
• Best places to fly from Billings for Christmas: fly Dec 19 – Dec 26, 2026
• Winter break trips from Billings: fly Dec 19 – Dec 26, 2026
• Cheapest places to fly from Billings for two weeks: fly Jan 9 – Jan 23, 2027
• Best places to fly from Billings for MLK weekend: fly Jan 15 – Jan 18, 2027
• MLK weekend getaways from Billings: fly Jan 15 – Jan 18, 2027
• Cheapest places to fly from Billings in January: fly Jan 16 – Jan 23, 2027
• Best places to fly from Billings for Presidents' Day weekend: fly Feb 12 – Feb 16, 2027
• Presidents' Day weekend getaways from Billings: fly Feb 12 – Feb 15, 2027
• Cheapest places to fly from Billings in February: fly Feb 13 – Feb 20, 2027
• Cheapest places to fly from Billings in March: fly Mar 6 – Mar 13, 2027
• Best places to fly from Billings for spring break: fly Mar 13 – Mar 20, 2027
• Spring break trips from Billings: fly Mar 13 – Mar 20, 2027
• Best places to fly from Billings for Easter weekend: fly Mar 25 – Mar 29, 2027
• Cheapest places to fly from Billings in April: fly Apr 10 – Apr 17, 2027
• Cheapest places to fly from Billings in May: fly May 8 – May 15, 2027
• Best places to fly from Billings for Memorial Day weekend: fly May 28 – May 31, 2027
• Cheapest places to fly from Billings in June: fly Jun 12 – Jun 19, 2027
• Best places to fly from Billings for July 4th weekend: fly Jul 2 – Jul 5, 2027
• Cheapest places to fly from Billings in July: fly Jul 10 – Jul 17, 2027
• Cheapest places to fly from Billings in August: fly Aug 7 – Aug 14, 2027
• Best places to fly from Billings for Labor Day weekend: fly Sep 3 – Sep 6, 2027
• Labor Day weekend trips from Billings: fly Sep 3 – Sep 6, 2027
• Cheapest places to fly from Billings in September: fly Sep 11 – Sep 18, 2027
• Bachelorette and bachelor party trips from Billings, priced for 6
• Cheapest places to fly from Billings for a week
• Fall foliage trips from Billings
• Group trips priced for 4 from Billings
• National park trips from Billings
• The best US cities to visit from Billings

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Source: https://helloaxel.com/en/flights/from-billings-bil-to-denver-den

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