Seattle (SEA) to Denver (DEN), Dec 4–6, 2026: from $75 one way

Seattle (SEA) to Denver (DEN), Dec 4–6, 2026: from $75 one way on Axel, checked Oct 29, 2026. Lowest published fare: $75 one way, Axel-exclusive, Frontier Airlines, nonstop, Dec 4, 2026, 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.

Route overview: Seattle to Denver (DEN) flight deals

2026-12-05 · one way · Axel-exclusive $75.00

• Frontier Airlines F91916: SEA 2026-12-05 16:37:00 → DEN 2026-12-05 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $130.00

• Southwest Airlines WN3823: SEA 2026-12-06 13:55:00 → DEN 2026-12-06 17:30:00; nonstop; 155 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $135.00

• Alaska Airlines AS310: SEA 2026-12-05 17:17:00 → DEN 2026-12-05 20:57:00; nonstop; 160 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $140.00

• Delta Air Lines DL2851: SEA 2026-12-04 19:59:00 → DEN 2026-12-04 23:48:00; nonstop; 169 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $145.00

• United Airlines UA2601: SEA 2026-12-05 05:00:00 → DEN 2026-12-05 08:41:00; nonstop; 161 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $165.00

• American Airlines AA2073 / AA4952: SEA 2026-12-05 15:00:00 → DEN 2026-12-05 22:58:00; 1 stop(s) via PHX; 418 minutes. Local airport times.
  • AA2073: SEA 2026-12-05 15:00:00 → PHX 2026-12-05 18:52:00; layover at PHX: 127 minutes.
  • AA4952: PHX 2026-12-05 20:59:00 → DEN 2026-12-05 22:58:00.

2026-12-04 · one way · Axel-exclusive $205.00

• Air Canada AC8803 / UA2470: SEA 2026-12-04 10:10:00 → DEN 2026-12-04 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
  • AC8803: SEA 2026-12-04 10:10:00 → YVR 2026-12-04 12:21:00; layover at YVR: 75 minutes.
  • UA2470: YVR 2026-12-04 13:36:00 → DEN 2026-12-04 16:27:00.

2026-12-06 · one way · Axel-exclusive $75.00

• Frontier Airlines F91916: SEA 2026-12-06 16:37:00 → DEN 2026-12-06 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $75.00

• Frontier Airlines F91916: SEA 2026-12-04 16:58:00 → DEN 2026-12-04 20:46:00; nonstop; 168 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $130.00

• Southwest Airlines WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; nonstop; 150 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $130.00

• Southwest Airlines WN4956: SEA 2026-12-05 06:15:00 → DEN 2026-12-05 09:45:00; nonstop; 150 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $130.00

• Southwest Airlines WN3823: SEA 2026-12-05 13:55:00 → DEN 2026-12-05 17:30:00; nonstop; 155 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $130.00

• Southwest Airlines WN4956: SEA 2026-12-04 06:15:00 → DEN 2026-12-04 09:45:00; nonstop; 150 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $130.00

• Southwest Airlines WN4956: SEA 2026-12-06 06:15:00 → DEN 2026-12-06 09:45:00; nonstop; 150 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $135.00

• Alaska Airlines AS535: SEA 2026-12-06 10:09:00 → DEN 2026-12-06 13:53:00; nonstop; 164 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $135.00

• Alaska Airlines AS310: SEA 2026-12-04 19:35:00 → DEN 2026-12-04 23:15:00; nonstop; 160 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $135.00

• Alaska Airlines AS682: SEA 2026-12-04 07:37:00 → DEN 2026-12-04 11:21:00; nonstop; 164 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $135.00

• Alaska Airlines AS421: SEA 2026-12-06 14:47:00 → DEN 2026-12-06 18:26:00; nonstop; 159 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $135.00

• Alaska Airlines AS440: SEA 2026-12-05 20:16:00 → DEN 2026-12-05 23:59:00; nonstop; 163 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $140.00

• Delta Air Lines DL2851: SEA 2026-12-06 19:59:00 → DEN 2026-12-06 23:48:00; nonstop; 169 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $140.00

• Delta Air Lines DL2759: SEA 2026-12-06 13:55:00 → DEN 2026-12-06 17:40:00; nonstop; 165 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $140.00

• Delta Air Lines DL2851: SEA 2026-12-05 19:59:00 → DEN 2026-12-05 23:47:00; nonstop; 168 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $140.00

• Delta Air Lines DL2759: SEA 2026-12-04 13:55:00 → DEN 2026-12-04 17:40:00; nonstop; 165 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $140.00

• Delta Air Lines DL1358: SEA 2026-12-05 09:13:00 → DEN 2026-12-05 13:04:00; nonstop; 171 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $145.00

• United Airlines UA1686: SEA 2026-12-06 05:05:00 → DEN 2026-12-06 08:42:00; nonstop; 157 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $145.00

• United Airlines UA757: SEA 2026-12-04 16:04:00 → DEN 2026-12-04 19:45:00; nonstop; 161 minutes. Local airport times.

2026-12-04 · one way · Axel-exclusive $145.00

• United Airlines UA2601: SEA 2026-12-04 05:00:00 → DEN 2026-12-04 08:41:00; nonstop; 161 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $145.00

• United Airlines UA1411: SEA 2026-12-06 12:50:00 → DEN 2026-12-06 16:27:00; nonstop; 157 minutes. Local airport times.

2026-12-05 · one way · Axel-exclusive $145.00

• United Airlines UA1411: SEA 2026-12-05 12:50:00 → DEN 2026-12-05 16:27:00; nonstop; 157 minutes. Local airport times.

2026-12-06 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3434 / WN1410: SEA 2026-12-06 05:40:00 → DEN 2026-12-06 13:10:00; 1 stop(s) via PHX; 390 minutes. Local airport times.
  • WN3434: SEA 2026-12-06 05:40:00 → PHX 2026-12-06 09:30:00; layover at PHX: 110 minutes.
  • WN1410: PHX 2026-12-06 11:20:00 → DEN 2026-12-06 13:10:00.

2026-12-06 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3833 / WN2542: SEA 2026-12-06 05:15:00 → DEN 2026-12-06 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2026-12-06 05:15:00 → SMF 2026-12-06 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2026-12-06 09:15:00 → DEN 2026-12-06 12:30:00.

2026-12-04 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3833 / WN2542: SEA 2026-12-04 05:15:00 → DEN 2026-12-04 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2026-12-04 05:15:00 → SMF 2026-12-04 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2026-12-04 09:15:00 → DEN 2026-12-04 12:30:00.

2026-12-05 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3833 / WN2542: SEA 2026-12-05 05:15:00 → DEN 2026-12-05 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2026-12-05 05:15:00 → SMF 2026-12-05 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2026-12-05 09:15:00 → DEN 2026-12-05 12:30:00.

2026-12-04 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3434 / WN1410: SEA 2026-12-04 05:40:00 → DEN 2026-12-04 13:10:00; 1 stop(s) via PHX; 390 minutes. Local airport times.
  • WN3434: SEA 2026-12-04 05:40:00 → PHX 2026-12-04 09:30:00; layover at PHX: 110 minutes.
  • WN1410: PHX 2026-12-04 11:20:00 → DEN 2026-12-04 13:10:00.

2026-12-05 · one way · Axel-exclusive $145.00

• Southwest Airlines WN3434 / WN1410: SEA 2026-12-05 05:40:00 → DEN 2026-12-05 13:10:00; 1 stop(s) via PHX; 390 minutes. Local airport times.
  • WN3434: SEA 2026-12-05 05:40:00 → PHX 2026-12-05 09:30:00; layover at PHX: 110 minutes.
  • WN1410: PHX 2026-12-05 11:20:00 → DEN 2026-12-05 13:10:00.

2026-12-05 · one way · Axel-exclusive $155.00

• Alaska Airlines AS2238 / AS684: SEA 2026-12-05 07:38:00 → DEN 2026-12-05 14:24:00; 1 stop(s) via PDX; 346 minutes. Local airport times.
  • AS2238: SEA 2026-12-05 07:38:00 → PDX 2026-12-05 08:35:00; layover at PDX: 129 minutes.
  • AS684: PDX 2026-12-05 10:44:00 → DEN 2026-12-05 14:24:00.

2026-12-06 · one way · Axel-exclusive $155.00

• Alaska Airlines AS2238 / AS684: SEA 2026-12-06 07:38:00 → DEN 2026-12-06 14:24:00; 1 stop(s) via PDX; 346 minutes. Local airport times.
  • AS2238: SEA 2026-12-06 07:38:00 → PDX 2026-12-06 08:35:00; layover at PDX: 129 minutes.
  • AS684: PDX 2026-12-06 10:44:00 → DEN 2026-12-06 14:24:00.

2026-12-04 · one way · Axel-exclusive $155.00

• Alaska Airlines AS2238 / AS684: SEA 2026-12-04 07:38:00 → DEN 2026-12-04 14:24:00; 1 stop(s) via PDX; 346 minutes. Local airport times.
  • AS2238: SEA 2026-12-04 07:38:00 → PDX 2026-12-04 08:35:00; layover at PDX: 129 minutes.
  • AS684: PDX 2026-12-04 10:44:00 → DEN 2026-12-04 14:24:00.

2026-12-06 · one way · Axel-exclusive $160.00

• Delta Air Lines DL1120 / DL1586: SEA 2026-12-06 13:25:00 → DEN 2026-12-06 20:32:00; 1 stop(s) via SLC; 367 minutes. Local airport times.
  • DL1120: SEA 2026-12-06 13:25:00 → SLC 2026-12-06 16:26:00; layover at SLC: 153 minutes.
  • DL1586: SLC 2026-12-06 18:59:00 → DEN 2026-12-06 20:32:00.

2026-12-05 · one way · Axel-exclusive $160.00

• Delta Air Lines DL1120 / DL1586: SEA 2026-12-05 13:25:00 → DEN 2026-12-05 20:32:00; 1 stop(s) via SLC; 367 minutes. Local airport times.
  • DL1120: SEA 2026-12-05 13:25:00 → SLC 2026-12-05 16:26:00; layover at SLC: 153 minutes.
  • DL1586: SLC 2026-12-05 18:59:00 → DEN 2026-12-05 20:32:00.

2026-12-04 · one way · Axel-exclusive $160.00

• Delta Air Lines DL1120 / DL1586: SEA 2026-12-04 13:25:00 → DEN 2026-12-04 20:32:00; 1 stop(s) via SLC; 367 minutes. Local airport times.
  • DL1120: SEA 2026-12-04 13:25:00 → SLC 2026-12-04 16:26:00; layover at SLC: 153 minutes.
  • DL1586: SLC 2026-12-04 18:59:00 → DEN 2026-12-04 20:32:00.

2026-12-06 · one way · Axel-exclusive $165.00

• American Airlines AA2073 / AA4952: SEA 2026-12-06 15:00:00 → DEN 2026-12-06 22:58:00; 1 stop(s) via PHX; 418 minutes. Local airport times.
  • AA2073: SEA 2026-12-06 15:00:00 → PHX 2026-12-06 18:52:00; layover at PHX: 127 minutes.
  • AA4952: PHX 2026-12-06 20:59:00 → DEN 2026-12-06 22:58:00.

2026-12-04 · one way · Axel-exclusive $165.00

• American Airlines AA2073 / AA4952: SEA 2026-12-04 15:00:00 → DEN 2026-12-04 22:58:00; 1 stop(s) via PHX; 418 minutes. Local airport times.
  • AA2073: SEA 2026-12-04 15:00:00 → PHX 2026-12-04 18:52:00; layover at PHX: 127 minutes.
  • AA4952: PHX 2026-12-04 20:59:00 → DEN 2026-12-04 22:58:00.

2026-12-05 · one way · Axel-exclusive $205.00

• Air Canada AC8803 / UA2470: SEA 2026-12-05 10:10:00 → DEN 2026-12-05 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
  • AC8803: SEA 2026-12-05 10:10:00 → YVR 2026-12-05 12:21:00; layover at YVR: 75 minutes.
  • UA2470: YVR 2026-12-05 13:36:00 → DEN 2026-12-05 16:27:00.

2026-12-06 · one way · Axel-exclusive $205.00

• Air Canada AC8803 / UA2470: SEA 2026-12-06 10:10:00 → DEN 2026-12-06 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
  • AC8803: SEA 2026-12-06 10:10:00 → YVR 2026-12-06 12:21:00; layover at YVR: 75 minutes.
  • UA2470: YVR 2026-12-06 13:36:00 → DEN 2026-12-06 16:27:00.

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.

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• This page: Seattle (SEA) to Denver (DEN) · Dec 4–Dec 6, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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