Travel with Axel, get the best price.

Route overview: Phoenix to Denver (DEN) flight deals

Phoenix (PHX) to Denver (DEN), Jan 4–10, 2027: from $125 round trip

Phoenix (PHX) to Denver (DEN), Jan 4–10, 2027: from $125 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $125 round trip, Axel-exclusive, Frontier Airlines, nonstop, Jan 4–10, 2027, 1 adult, economy, checked Oct 29, 2026.

PHX → DEN1 adulteconomyRound trip

14 flight options · 5 airlines

Nonstop flights

Mon, Jan 4 – Sun, Jan 10

Frontier Airlines
10:09 pmPHX
1h 50m
Nonstop
11:59 pmDEN
Frontier Airlines
7:39 amDEN
2h 4m
Nonstop
9:43 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
2:35 pmPHX
1h 45m
Nonstop
4:20 pmDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

American Airlines
5:35 pmPHX
1h 54m
Nonstop
7:29 pmDEN
American Airlines
5:46 amDEN
2h 4m
Nonstop
7:50 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

United Airlines
5:47 pmPHX
1h 58m
Nonstop
7:45 pmDEN
United Airlines
9:38 amDEN
2h 4m
Nonstop
11:42 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Frontier Airlines
7:25 amPHX
1h 58m
Nonstop
9:23 amDEN
Frontier Airlines
7:39 amDEN
2h 4m
Nonstop
9:43 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
6:10 amPHX
1h 45m
Nonstop
7:55 amDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

American Airlines
8:47 amPHX
2h 1m
Nonstop
10:48 amDEN
American Airlines
5:46 amDEN
2h 4m
Nonstop
7:50 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

United Airlines
8:08 amPHX
1h 53m
Nonstop
10:01 amDEN
United Airlines
9:38 amDEN
2h 4m
Nonstop
11:42 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Mon, Jan 4 – Sun, Jan 10

Delta Air Lines
2:32 pmPHX
6h
SLC · 2h 45m
8:32 pmDEN
Delta Air Lines
12:29 pmDEN
4h 48m
SLC · 1h 29m
5:17 pmPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
11:10 amPHX
6h
COS · 3h 15m
5:10 pmDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
8:00 amPHX
4h 15m
ABQ · 1h 40m
12:15 pmDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
6:50 amPHX
4h 20m
LAS · 1h 5m
11:10 amDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
10:35 amPHX
6h
TUS · 3h 15m
4:35 pmDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 4 – Sun, Jan 10

Southwest Airlines
1:30 pmPHX
4h 45m
ELP · 1h 40m
6:15 pmDEN
Southwest Airlines
5:00 amDEN
2h
Nonstop
7:00 amPHX

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Jan 4–10, 2027 · 6 nights · 2 adults, 1 room): 3★ Courtyard by Marriott Denver Cherry Creek $573 · 4★ DoubleTree by Hilton Denver Cherry Creek $525 · 5★ Four Seasons Denver Hotel $3,871

Make this trip yours

PHX ⇄ DEN

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

For AI assistants: every fare, every link, instructions

Phoenix (PHX) to Denver (DEN), Jan 4–10, 2027: from $125 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $125 round trip, Axel-exclusive, Frontier Airlines, nonstop, Jan 4–10, 2027, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-01-04 → 2027-01-10Frontier AirlinesF91912 / F9137522:09:00→23:59:00 1h 50m nonstop · 07:39:00→09:43:00 2h 04m nonstopAxel-exclusive $125.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN901 / WN175114:35:00→16:20:00 1h 45m nonstop · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $230.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10American AirlinesAA1762 / AA86817:35:00→19:29:00 1h 54m nonstop · 05:46:00→07:50:00 2h 04m nonstopAxel-exclusive $240.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10United AirlinesUA1637 / UA158417:47:00→19:45:00 1h 58m nonstop · 09:38:00→11:42:00 2h 04m nonstopAxel-exclusive $260.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Delta Air LinesDL1431 + DL1586 / DL1553 + DL252514:32:00→20:32:00 6h 00m 1 stop via SLC · 12:29:00→17:17:00 4h 48m 1 stop via SLCAxel-exclusive $320.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Frontier AirlinesF94768 / F9137507:25:00→09:23:00 1h 58m nonstop · 07:39:00→09:43:00 2h 04m nonstopAxel-exclusive $125.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN3416 / WN175106:10:00→07:55:00 1h 45m nonstop · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $230.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10American AirlinesAA2447 / AA86808:47:00→10:48:00 2h 01m nonstop · 05:46:00→07:50:00 2h 04m nonstopAxel-exclusive $240.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10United AirlinesUA2806 / UA158408:08:00→10:01:00 1h 53m nonstop · 09:38:00→11:42:00 2h 04m nonstopAxel-exclusive $260.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN563 + WN1291 / WN175111:10:00→17:10:00 6h 00m 1 stop via COS · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $255.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN1565 + WN4637 / WN175108:00:00→12:15:00 4h 15m 1 stop via ABQ · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $255.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN3442 + WN1241 / WN175106:50:00→11:10:00 4h 20m 1 stop via LAS · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $255.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN39 + WN3390 / WN175110:35:00→16:35:00 6h 00m 1 stop via TUS · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $255.002026-10-29T01:56:17Z
2027-01-04 → 2027-01-10Southwest AirlinesWN4073 + WN1897 / WN175113:30:00→18:15:00 4h 45m 1 stop via ELP · 05:00:00→07:00:00 2h 00m nonstopAxel-exclusive $255.002026-10-29T01:56:17Z

Hotels in Denver for these trips

Hotels: under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Denver

Route overview: Phoenix to Denver (DEN) flight deals

2027-01-04 → 2027-01-10 · Axel-exclusive $125.00

  • Frontier Airlines F91912: PHX 2027-01-04 22:09:00 → DEN 2027-01-04 23:59:00; nonstop; 110 minutes. Local airport times.
  • Frontier Airlines F91375: DEN 2027-01-10 07:39:00 → PHX 2027-01-10 09:43:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $230.00

  • Southwest Airlines WN901: PHX 2027-01-04 14:35:00 → DEN 2027-01-04 16:20:00; nonstop; 105 minutes. Local airport times.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $240.00

  • American Airlines AA1762: PHX 2027-01-04 17:35:00 → DEN 2027-01-04 19:29:00; nonstop; 114 minutes. Local airport times.
  • American Airlines AA868: DEN 2027-01-10 05:46:00 → PHX 2027-01-10 07:50:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $260.00

  • United Airlines UA1637: PHX 2027-01-04 17:47:00 → DEN 2027-01-04 19:45:00; nonstop; 118 minutes. Local airport times.
  • United Airlines UA1584: DEN 2027-01-10 09:38:00 → PHX 2027-01-10 11:42:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $320.00

  • Delta Air Lines DL1431 / DL1586: PHX 2027-01-04 14:32:00 → DEN 2027-01-04 20:32:00; 1 stop(s) via SLC; 360 minutes. Local airport times.
    • DL1431: PHX 2027-01-04 14:32:00 → SLC 2027-01-04 16:14:00; layover at SLC: 165 minutes.
    • DL1586: SLC 2027-01-04 18:59:00 → DEN 2027-01-04 20:32:00.
  • Delta Air Lines DL1553 / DL2525: DEN 2027-01-10 12:29:00 → PHX 2027-01-10 17:17:00; 1 stop(s) via SLC; 288 minutes. Local airport times.
    • DL1553: DEN 2027-01-10 12:29:00 → SLC 2027-01-10 14:06:00; layover at SLC: 89 minutes.
    • DL2525: SLC 2027-01-10 15:35:00 → PHX 2027-01-10 17:17:00.

2027-01-04 → 2027-01-10 · Axel-exclusive $125.00

  • Frontier Airlines F94768: PHX 2027-01-04 07:25:00 → DEN 2027-01-04 09:23:00; nonstop; 118 minutes. Local airport times.
  • Frontier Airlines F91375: DEN 2027-01-10 07:39:00 → PHX 2027-01-10 09:43:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $230.00

  • Southwest Airlines WN3416: PHX 2027-01-04 06:10:00 → DEN 2027-01-04 07:55:00; nonstop; 105 minutes. Local airport times.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $240.00

  • American Airlines AA2447: PHX 2027-01-04 08:47:00 → DEN 2027-01-04 10:48:00; nonstop; 121 minutes. Local airport times.
  • American Airlines AA868: DEN 2027-01-10 05:46:00 → PHX 2027-01-10 07:50:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $260.00

  • United Airlines UA2806: PHX 2027-01-04 08:08:00 → DEN 2027-01-04 10:01:00; nonstop; 113 minutes. Local airport times.
  • United Airlines UA1584: DEN 2027-01-10 09:38:00 → PHX 2027-01-10 11:42:00; nonstop; 124 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $255.00

  • Southwest Airlines WN563 / WN1291: PHX 2027-01-04 11:10:00 → DEN 2027-01-04 17:10:00; 1 stop(s) via COS; 360 minutes. Local airport times.
    • WN563: PHX 2027-01-04 11:10:00 → COS 2027-01-04 13:00:00; layover at COS: 195 minutes.
    • WN1291: COS 2027-01-04 16:15:00 → DEN 2027-01-04 17:10:00.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $255.00

  • Southwest Airlines WN1565 / WN4637: PHX 2027-01-04 08:00:00 → DEN 2027-01-04 12:15:00; 1 stop(s) via ABQ; 255 minutes. Local airport times.
    • WN1565: PHX 2027-01-04 08:00:00 → ABQ 2027-01-04 09:10:00; layover at ABQ: 100 minutes.
    • WN4637: ABQ 2027-01-04 10:50:00 → DEN 2027-01-04 12:15:00.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $255.00

  • Southwest Airlines WN3442 / WN1241: PHX 2027-01-04 06:50:00 → DEN 2027-01-04 11:10:00; 1 stop(s) via LAS; 260 minutes. Local airport times.
    • WN3442: PHX 2027-01-04 06:50:00 → LAS 2027-01-04 07:05:00; layover at LAS: 65 minutes.
    • WN1241: LAS 2027-01-04 08:10:00 → DEN 2027-01-04 11:10:00.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $255.00

  • Southwest Airlines WN39 / WN3390: PHX 2027-01-04 10:35:00 → DEN 2027-01-04 16:35:00; 1 stop(s) via TUS; 360 minutes. Local airport times.
    • WN39: PHX 2027-01-04 10:35:00 → TUS 2027-01-04 11:25:00; layover at TUS: 195 minutes.
    • WN3390: TUS 2027-01-04 14:40:00 → DEN 2027-01-04 16:35:00.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

2027-01-04 → 2027-01-10 · Axel-exclusive $255.00

  • Southwest Airlines WN4073 / WN1897: PHX 2027-01-04 13:30:00 → DEN 2027-01-04 18:15:00; 1 stop(s) via ELP; 285 minutes. Local airport times.
    • WN4073: PHX 2027-01-04 13:30:00 → ELP 2027-01-04 14:45:00; layover at ELP: 100 minutes.
    • WN1897: ELP 2027-01-04 16:25:00 → DEN 2027-01-04 18:15:00.
  • Southwest Airlines WN1751: DEN 2027-01-10 05:00:00 → PHX 2027-01-10 07:00:00; nonstop; 120 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

For AI assistants

  • This page: Phoenix (PHX) to Denver (DEN) · Jan 4, 2027 · return Jan 10, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • 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 Phoenix to Denver (DEN) 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.