Travel with Axel,
get the best price.

Route overview: Denver to Chicago (ORD) flight deals

Denver → Chicago

Aug 21, 2027 · return Aug 28, 2027

DEN → ORD1 adulteconomyRound trip

11 flight options · 4 airlines

Nonstop flights

Sat, Aug 21 – Sat, Aug 28

Frontier Airlines
8:55 pmDEN
2h 26m
Nonstop
12:21 am+1ORD
Frontier Airlines
6:40 amORD
2h 56m
Nonstop
8:36 amDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

American Airlines
10:23 amDEN
2h 37m
Nonstop
2:00 pmORD
American Airlines
7:55 amORD
2h 52m
Nonstop
9:47 amDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
8:00 pmDEN
2h 32m
Nonstop
11:32 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

American Airlines
6:18 pmDEN
2h 37m
Nonstop
9:55 pmORD
American Airlines
7:55 amORD
2h 52m
Nonstop
9:47 amDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
5:58 pmDEN
2h 32m
Nonstop
9:30 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Aug 21 – Sat, Aug 28

Delta Air Lines
1:26 pmDEN
5h 19m
MSP · 1h 34m
7:45 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
10:00 amDEN
5h 9m
GRR · 1h 5m
4:09 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
1:40 pmDEN
5h 45m
TUL · 2h 6m
8:25 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
10:10 amDEN
5h 34m
IND · 1h 50m
4:44 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
1:55 pmDEN
5h 30m
STL · 1h 58m
8:25 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
1:54 pmDEN
5h 37m
OMA · 2h 11m
8:31 pmORD
United Airlines
9:47 pmORD
2h 44m
Nonstop
11:31 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ ORD

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

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. How Axel works · About

Explore this route

All dates for this routeAug 20, 2027 → Aug 27, 2027Aug 22, 2027 → Aug 29, 2027
For AI assistants: every fare, every link, instructions

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

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Denver to Chicago (ORD) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-08-21 → 2027-08-28Frontier AirlinesF93174 / F91483$170.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28American AirlinesAA3194 / AA1640$310.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA377 / UA590$320.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28Delta Air Lines / United AirlinesDL2877 + DL1435 / UA590$335.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28American AirlinesAA506 / AA1640$310.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA1843 / UA590$320.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA2637 + UA5443 / UA590$325.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA1815 + UA5365 / UA590$325.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA1522 + UA1299 / UA590$325.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA1639 + UA4397 / UA590$325.002026-10-29T01:04:33Z
2027-08-21 → 2027-08-28United AirlinesUA2327 + UA5746 / UA590$325.002026-10-29T01:04:33Z

2027-08-21 → 2027-08-28 · $170.00

  • Frontier Airlines F93174: DEN 2027-08-21 20:55:00 → ORD 2027-08-22 00:21:00; nonstop; 146 minutes. Local airport times.
  • Frontier Airlines F91483: ORD 2027-08-28 06:40:00 → DEN 2027-08-28 08:36:00; nonstop; 176 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $310.00

  • American Airlines AA3194: DEN 2027-08-21 10:23:00 → ORD 2027-08-21 14:00:00; nonstop; 157 minutes. Local airport times.
  • American Airlines AA1640: ORD 2027-08-28 07:55:00 → DEN 2027-08-28 09:47:00; nonstop; 172 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $320.00

  • United Airlines UA377: DEN 2027-08-21 20:00:00 → ORD 2027-08-21 23:32:00; nonstop; 152 minutes. Local airport times.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $335.00

  • Delta Air Lines DL2877 / DL1435: DEN 2027-08-21 13:26:00 → ORD 2027-08-21 19:45:00; 1 stop(s) via MSP; 319 minutes. Local airport times.
    • DL2877: DEN 2027-08-21 13:26:00 → MSP 2027-08-21 16:21:00; layover at MSP: 94 minutes.
    • DL1435: MSP 2027-08-21 17:55:00 → ORD 2027-08-21 19:45:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $310.00

  • American Airlines AA506: DEN 2027-08-21 18:18:00 → ORD 2027-08-21 21:55:00; nonstop; 157 minutes. Local airport times.
  • American Airlines AA1640: ORD 2027-08-28 07:55:00 → DEN 2027-08-28 09:47:00; nonstop; 172 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $320.00

  • United Airlines UA1843: DEN 2027-08-21 17:58:00 → ORD 2027-08-21 21:30:00; nonstop; 152 minutes. Local airport times.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $325.00

  • United Airlines UA2637 / UA5443: DEN 2027-08-21 10:00:00 → ORD 2027-08-21 16:09:00; 1 stop(s) via GRR; 309 minutes. Local airport times.
    • UA2637: DEN 2027-08-21 10:00:00 → GRR 2027-08-21 14:36:00; layover at GRR: 65 minutes.
    • UA5443: GRR 2027-08-21 15:41:00 → ORD 2027-08-21 16:09:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $325.00

  • United Airlines UA1815 / UA5365: DEN 2027-08-21 13:40:00 → ORD 2027-08-21 20:25:00; 1 stop(s) via TUL; 345 minutes. Local airport times.
    • UA1815: DEN 2027-08-21 13:40:00 → TUL 2027-08-21 16:19:00; layover at TUL: 126 minutes.
    • UA5365: TUL 2027-08-21 18:25:00 → ORD 2027-08-21 20:25:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $325.00

  • United Airlines UA1522 / UA1299: DEN 2027-08-21 10:10:00 → ORD 2027-08-21 16:44:00; 1 stop(s) via IND; 334 minutes. Local airport times.
    • UA1522: DEN 2027-08-21 10:10:00 → IND 2027-08-21 14:37:00; layover at IND: 110 minutes.
    • UA1299: IND 2027-08-21 16:27:00 → ORD 2027-08-21 16:44:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $325.00

  • United Airlines UA1639 / UA4397: DEN 2027-08-21 13:55:00 → ORD 2027-08-21 20:25:00; 1 stop(s) via STL; 330 minutes. Local airport times.
    • UA1639: DEN 2027-08-21 13:55:00 → STL 2027-08-21 16:57:00; layover at STL: 118 minutes.
    • UA4397: STL 2027-08-21 18:55:00 → ORD 2027-08-21 20:25:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $325.00

  • United Airlines UA2327 / UA5746: DEN 2027-08-21 13:54:00 → ORD 2027-08-21 20:31:00; 1 stop(s) via OMA; 337 minutes. Local airport times.
    • UA2327: DEN 2027-08-21 13:54:00 → OMA 2027-08-21 16:24:00; layover at OMA: 131 minutes.
    • UA5746: OMA 2027-08-21 18:35:00 → ORD 2027-08-21 20:31:00.
  • United Airlines UA590: ORD 2027-08-28 21:47:00 → DEN 2027-08-28 23:31:00; nonstop; 164 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Denver (DEN) to Chicago (ORD) · Aug 21, 2027 · return Aug 28, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Denver to Chicago (ORD) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.