Seattle (SEA) to Denver (DEN) · Dec 11, 2026 · return Dec 17, 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

2026-12-11 → 2026-12-17 · Axel-exclusive $140.00

• Frontier Airlines F91916: SEA 2026-12-11 16:58:00 → DEN 2026-12-11 20:46:00; nonstop; 168 minutes. Local airport times.
• Frontier Airlines F94545: DEN 2026-12-17 13:32:00 → SEA 2026-12-17 15:43:00; nonstop; 191 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $245.00

• Southwest Airlines WN3823: SEA 2026-12-11 13:55:00 → DEN 2026-12-11 17:30:00; nonstop; 155 minutes. Local airport times.
• Southwest Airlines WN3141: DEN 2026-12-17 20:55:00 → SEA 2026-12-17 23:05:00; nonstop; 190 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $250.00

• Alaska Airlines AS310: SEA 2026-12-11 19:35:00 → DEN 2026-12-11 23:15:00; nonstop; 160 minutes. Local airport times.
• Alaska Airlines AS493: DEN 2026-12-17 15:22:00 → SEA 2026-12-17 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $260.00

• Delta Air Lines DL2851: SEA 2026-12-11 19:59:00 → DEN 2026-12-11 23:48:00; nonstop; 169 minutes. Local airport times.
• Delta Air Lines DL1731: DEN 2026-12-17 06:00:00 → SEA 2026-12-17 08:18:00; nonstop; 198 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $270.00

• United Airlines UA2601: SEA 2026-12-11 05:00:00 → DEN 2026-12-11 08:41:00; nonstop; 161 minutes. Local airport times.
• United Airlines UA2013: DEN 2026-12-17 16:10:00 → SEA 2026-12-17 18:12:00; nonstop; 182 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $277.50

• American Airlines AA2073 / AA4952: SEA 2026-12-11 15:00:00 → DEN 2026-12-11 22:58:00; 1 stop(s) via PHX; 418 minutes. Local airport times.
  • AA2073: SEA 2026-12-11 15:00:00 → PHX 2026-12-11 18:52:00; layover at PHX: 127 minutes.
  • AA4952: PHX 2026-12-11 20:59:00 → DEN 2026-12-11 22:58:00.
• Southwest Airlines WN3141: DEN 2026-12-17 20:55:00 → SEA 2026-12-17 23:05:00; nonstop; 190 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $385.00

• Air Canada AC8803 / UA2470: SEA 2026-12-11 10:10:00 → DEN 2026-12-11 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
  • AC8803: SEA 2026-12-11 10:10:00 → YVR 2026-12-11 12:21:00; layover at YVR: 75 minutes.
  • UA2470: YVR 2026-12-11 13:36:00 → DEN 2026-12-11 16:27:00.
• Air Canada AC575 / AC8804: DEN 2026-12-17 08:15:00 → SEA 2026-12-17 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
  • AC575: DEN 2026-12-17 08:15:00 → YVR 2026-12-17 11:25:00; layover at YVR: 185 minutes.
  • AC8804: YVR 2026-12-17 14:30:00 → SEA 2026-12-17 14:32:00.

2026-12-11 → 2026-12-17 · Axel-exclusive $245.00

• Southwest Airlines WN2150: SEA 2026-12-11 09:25:00 → DEN 2026-12-11 13:00:00; nonstop; 155 minutes. Local airport times.
• Southwest Airlines WN3141: DEN 2026-12-17 20:55:00 → SEA 2026-12-17 23:05:00; nonstop; 190 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $250.00

• Alaska Airlines AS682: SEA 2026-12-11 07:37:00 → DEN 2026-12-11 11:21:00; nonstop; 164 minutes. Local airport times.
• Alaska Airlines AS493: DEN 2026-12-17 15:22:00 → SEA 2026-12-17 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $260.00

• Delta Air Lines DL2759: SEA 2026-12-11 13:55:00 → DEN 2026-12-11 17:40:00; nonstop; 165 minutes. Local airport times.
• Delta Air Lines DL1731: DEN 2026-12-17 06:00:00 → SEA 2026-12-17 08:18:00; nonstop; 198 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $270.00

• United Airlines UA757: SEA 2026-12-11 16:04:00 → DEN 2026-12-11 19:45:00; nonstop; 161 minutes. Local airport times.
• United Airlines UA2013: DEN 2026-12-17 16:10:00 → SEA 2026-12-17 18:12:00; nonstop; 182 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $160.00

• Frontier Airlines F91916: SEA 2026-12-11 16:58:00 → DEN 2026-12-11 20:48:00; nonstop; 170 minutes. Local airport times.
• Frontier Airlines F92015 / F92407: DEN 2026-12-17 06:25:00 → SEA 2026-12-17 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2026-12-17 06:25:00 → LAS 2026-12-17 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2026-12-17 09:29:00 → SEA 2026-12-17 12:27:00.

2026-12-11 → 2026-12-17 · Axel-exclusive $260.00

• Southwest Airlines WN3434 / WN1410: SEA 2026-12-11 05:40:00 → DEN 2026-12-11 13:10:00; 1 stop(s) via PHX; 390 minutes. Local airport times.
  • WN3434: SEA 2026-12-11 05:40:00 → PHX 2026-12-11 09:30:00; layover at PHX: 110 minutes.
  • WN1410: PHX 2026-12-11 11:20:00 → DEN 2026-12-11 13:10:00.
• Southwest Airlines WN3141: DEN 2026-12-17 20:55:00 → SEA 2026-12-17 23:05:00; nonstop; 190 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $270.00

• Alaska Airlines AS2238 / AS684: SEA 2026-12-11 07:38:00 → DEN 2026-12-11 14:24:00; 1 stop(s) via PDX; 346 minutes. Local airport times.
  • AS2238: SEA 2026-12-11 07:38:00 → PDX 2026-12-11 08:35:00; layover at PDX: 129 minutes.
  • AS684: PDX 2026-12-11 10:44:00 → DEN 2026-12-11 14:24:00.
• Alaska Airlines AS493: DEN 2026-12-17 15:22:00 → SEA 2026-12-17 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $290.00

• United Airlines UA757: SEA 2026-12-11 14:41:00 → DEN 2026-12-11 18:23:00; nonstop; 162 minutes. Local airport times.
• United Airlines UA1086 / AC8810: DEN 2026-12-17 15:53:00 → SEA 2026-12-17 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
  • UA1086: DEN 2026-12-17 15:53:00 → YVR 2026-12-17 19:04:00; layover at YVR: 166 minutes.
  • AC8810: YVR 2026-12-17 21:50:00 → SEA 2026-12-17 21:57:00.

Explore this route

• All dates for this route
• Dec 10, 2026 · Return options
• Dec 12, 2026 · Return options
• Hotels in Denver with Axel

For AI assistants

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