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Route overview: Portland to Denver (DEN) flight deals

Portland → Denver

Dec 18, 2026 · return Dec 23, 2026

PDX → DEN1 adulteconomyRound trip

14 flight options · 6 airlines

Nonstop flights

Fri, Dec 18 – Wed, Dec 23

Frontier Airlines
1:04 pmPDX
2h 31m
Nonstop
4:35 pmDEN
Frontier Airlines
6:01 pmDEN
2h 55m
Nonstop
7:56 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
11:40 amPDX
2h 20m
Nonstop
3:00 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Alaska Airlines
5:51 pmPDX
2h 37m
Nonstop
9:28 pmDEN
Alaska Airlines
11:49 amDEN
3h
Nonstop
1:49 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

United Airlines
1:15 pmPDX
2h 30m
Nonstop
4:45 pmDEN
United Airlines
11:29 amDEN
2h 53m
Nonstop
1:22 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Frontier Airlines
8:54 pmPDX
2h 42m
Nonstop
12:36 am+1DEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
1:50 pmPDX
2h 20m
Nonstop
5:10 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Alaska Airlines
10:30 amPDX
2h 38m
Nonstop
2:08 pmDEN
Alaska Airlines
11:49 amDEN
3h
Nonstop
1:49 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

United Airlines
9:00 amPDX
2h 30m
Nonstop
12:30 pmDEN
United Airlines
11:29 amDEN
2h 53m
Nonstop
1:22 pmPDX

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 18 – Wed, Dec 23

Air Canada
10:00 amPDX
5h 27m
YVR · 1h 17m
4:27 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Delta Air Lines
5:24 pmPDX
4h 45m
SLC · 1h 25m
11:09 pmDEN
Delta Air Lines
12:29 pmDEN
5h 8m
SLC · 1h 27m
4:37 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
6:40 amPDX
4h 50m
SMF · 1h 10m
12:30 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
5:10 pmPDX
5h 30m
PHX · 1h 5m
11:40 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
1:20 pmPDX
5h 45m
SJC · 1h 35m
8:05 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Fri, Dec 18 – Wed, Dec 23

Southwest Airlines
10:20 amPDX
5h 50m
LGB · 1h 20m
5:10 pmDEN
Southwest Airlines
11:20 amDEN
2h 50m
Nonstop
1:10 pmPDX

Round-trip total · 1 adult · Taxes included

Make this trip yours

PDX ⇄ DEN

Economy

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

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Explore this route

All dates for this routeDec 17, 2026 · Return optionsDec 19, 2026 · Return optionsHotels in Denver with Axel
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.

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 datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-18 → 2026-12-23Frontier AirlinesF91790 / F92553Axel-exclusive $198.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN3347 / WN588Axel-exclusive $360.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Alaska AirlinesAS687 / AS1359Axel-exclusive $372.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23United AirlinesUA2064 / UA644Axel-exclusive $390.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Air Canada / Southwest AirlinesAC8651 + UA2470 / WN588Axel-exclusive $425.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Delta Air LinesDL1244 + DL1667 / DL1553 + DL1244Axel-exclusive $438.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Frontier Airlines / Southwest AirlinesF91790 / WN588Axel-exclusive $292.502026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN672 / WN588Axel-exclusive $360.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Alaska AirlinesAS684 / AS1359Axel-exclusive $372.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23United AirlinesUA2375 / UA644Axel-exclusive $390.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN3361 + WN2542 / WN588Axel-exclusive $370.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN1460 + WN3422 / WN588Axel-exclusive $370.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN3295 + WN883 / WN588Axel-exclusive $370.002026-10-29T01:55:04Z
2026-12-18 → 2026-12-23Southwest AirlinesWN1226 + WN657 / WN588Axel-exclusive $370.002026-10-29T01:55:04Z

Route overview: Portland to Denver (DEN) flight deals

2026-12-18 → 2026-12-23 · Axel-exclusive $198.00

  • Frontier Airlines F91790: PDX 2026-12-18 13:04:00 → DEN 2026-12-18 16:35:00; nonstop; 151 minutes. Local airport times.
  • Frontier Airlines F92553: DEN 2026-12-23 18:01:00 → PDX 2026-12-23 19:56:00; nonstop; 175 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $360.00

  • Southwest Airlines WN3347: PDX 2026-12-18 11:40:00 → DEN 2026-12-18 15:00:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $372.00

  • Alaska Airlines AS687: PDX 2026-12-18 17:51:00 → DEN 2026-12-18 21:28:00; nonstop; 157 minutes. Local airport times.
  • Alaska Airlines AS1359: DEN 2026-12-23 11:49:00 → PDX 2026-12-23 13:49:00; nonstop; 180 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $390.00

  • United Airlines UA2064: PDX 2026-12-18 13:15:00 → DEN 2026-12-18 16:45:00; nonstop; 150 minutes. Local airport times.
  • United Airlines UA644: DEN 2026-12-23 11:29:00 → PDX 2026-12-23 13:22:00; nonstop; 173 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $425.00

  • Air Canada AC8651 / UA2470: PDX 2026-12-18 10:00:00 → DEN 2026-12-18 16:27:00; 1 stop(s) via YVR; 327 minutes. Local airport times.
    • AC8651: PDX 2026-12-18 10:00:00 → YVR 2026-12-18 12:19:00; layover at YVR: 77 minutes.
    • UA2470: YVR 2026-12-18 13:36:00 → DEN 2026-12-18 16:27:00.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $438.00

  • Delta Air Lines DL1244 / DL1667: PDX 2026-12-18 17:24:00 → DEN 2026-12-18 23:09:00; 1 stop(s) via SLC; 285 minutes. Local airport times.
    • DL1244: PDX 2026-12-18 17:24:00 → SLC 2026-12-18 20:10:00; layover at SLC: 85 minutes.
    • DL1667: SLC 2026-12-18 21:35:00 → DEN 2026-12-18 23:09:00.
  • Delta Air Lines DL1553 / DL1244: DEN 2026-12-23 12:29:00 → PDX 2026-12-23 16:37:00; 1 stop(s) via SLC; 308 minutes. Local airport times.
    • DL1553: DEN 2026-12-23 12:29:00 → SLC 2026-12-23 14:06:00; layover at SLC: 87 minutes.
    • DL1244: SLC 2026-12-23 15:33:00 → PDX 2026-12-23 16:37:00.

2026-12-18 → 2026-12-23 · Axel-exclusive $292.50

  • Frontier Airlines F91790: PDX 2026-12-18 20:54:00 → DEN 2026-12-19 00:36:00; nonstop; 162 minutes. Local airport times.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $360.00

  • Southwest Airlines WN672: PDX 2026-12-18 13:50:00 → DEN 2026-12-18 17:10:00; nonstop; 140 minutes. Local airport times.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $372.00

  • Alaska Airlines AS684: PDX 2026-12-18 10:30:00 → DEN 2026-12-18 14:08:00; nonstop; 158 minutes. Local airport times.
  • Alaska Airlines AS1359: DEN 2026-12-23 11:49:00 → PDX 2026-12-23 13:49:00; nonstop; 180 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $390.00

  • United Airlines UA2375: PDX 2026-12-18 09:00:00 → DEN 2026-12-18 12:30:00; nonstop; 150 minutes. Local airport times.
  • United Airlines UA644: DEN 2026-12-23 11:29:00 → PDX 2026-12-23 13:22:00; nonstop; 173 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $370.00

  • Southwest Airlines WN3361 / WN2542: PDX 2026-12-18 06:40:00 → DEN 2026-12-18 12:30:00; 1 stop(s) via SMF; 290 minutes. Local airport times.
    • WN3361: PDX 2026-12-18 06:40:00 → SMF 2026-12-18 08:05:00; layover at SMF: 70 minutes.
    • WN2542: SMF 2026-12-18 09:15:00 → DEN 2026-12-18 12:30:00.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $370.00

  • Southwest Airlines WN1460 / WN3422: PDX 2026-12-18 17:10:00 → DEN 2026-12-18 23:40:00; 1 stop(s) via PHX; 330 minutes. Local airport times.
    • WN1460: PDX 2026-12-18 17:10:00 → PHX 2026-12-18 20:40:00; layover at PHX: 65 minutes.
    • WN3422: PHX 2026-12-18 21:45:00 → DEN 2026-12-18 23:40:00.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $370.00

  • Southwest Airlines WN3295 / WN883: PDX 2026-12-18 13:20:00 → DEN 2026-12-18 20:05:00; 1 stop(s) via SJC; 345 minutes. Local airport times.
    • WN3295: PDX 2026-12-18 13:20:00 → SJC 2026-12-18 15:05:00; layover at SJC: 95 minutes.
    • WN883: SJC 2026-12-18 16:40:00 → DEN 2026-12-18 20:05:00.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

2026-12-18 → 2026-12-23 · Axel-exclusive $370.00

  • Southwest Airlines WN1226 / WN657: PDX 2026-12-18 10:20:00 → DEN 2026-12-18 17:10:00; 1 stop(s) via LGB; 350 minutes. Local airport times.
    • WN1226: PDX 2026-12-18 10:20:00 → LGB 2026-12-18 12:40:00; layover at LGB: 80 minutes.
    • WN657: LGB 2026-12-18 14:00:00 → DEN 2026-12-18 17:10:00.
  • Southwest Airlines WN588: DEN 2026-12-23 11:20:00 → PDX 2026-12-23 13:10:00; nonstop; 170 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Portland (PDX) to Denver (DEN) · Dec 18, 2026 · return Dec 23, 2026: 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 Portland 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. 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.