Seattle (SEA) to Denver (DEN) · Dec 16, 2026 · return Dec 21, 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

2026-12-16 → 2026-12-21 · Axel-exclusive $171.50

• Frontier Airlines F91916: SEA 2026-12-16 16:37:00 → DEN 2026-12-16 20:25:00; nonstop; 168 minutes. Local airport times.
• Frontier Airlines F9605: DEN 2026-12-21 10:08:00 → SEA 2026-12-21 12:22:00; nonstop; 194 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $300.13

• Southwest Airlines WN2150: SEA 2026-12-16 09:25:00 → DEN 2026-12-16 13:00:00; nonstop; 155 minutes. Local airport times.
• Southwest Airlines WN244: DEN 2026-12-21 15:40:00 → SEA 2026-12-21 17:50:00; nonstop; 190 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $306.25

• Alaska Airlines AS421: SEA 2026-12-16 14:47:00 → DEN 2026-12-16 18:26:00; nonstop; 159 minutes. Local airport times.
• Alaska Airlines AS493: DEN 2026-12-21 15:22:00 → SEA 2026-12-21 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $318.50

• Delta Air Lines DL2759: SEA 2026-12-16 13:55:00 → DEN 2026-12-16 17:40:00; nonstop; 165 minutes. Local airport times.
• Delta Air Lines DL2543: DEN 2026-12-21 18:35:00 → SEA 2026-12-21 20:46:00; nonstop; 191 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $330.75

• United Airlines UA1534: SEA 2026-12-16 12:45:00 → DEN 2026-12-16 16:26:00; nonstop; 161 minutes. Local airport times.
• United Airlines UA2271: DEN 2026-12-21 07:40:00 → SEA 2026-12-21 09:49:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $336.25

• American Airlines AA2073 / AA4952: SEA 2026-12-16 15:00:00 → DEN 2026-12-16 22:58:00; 1 stop(s) via PHX; 418 minutes. Local airport times.
  • AA2073: SEA 2026-12-16 15:00:00 → PHX 2026-12-16 18:52:00; layover at PHX: 127 minutes.
  • AA4952: PHX 2026-12-16 20:59:00 → DEN 2026-12-16 22:58:00.
• Alaska Airlines AS493: DEN 2026-12-21 15:22:00 → SEA 2026-12-21 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $471.63

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

2026-12-16 → 2026-12-21 · Axel-exclusive $300.13

• Southwest Airlines WN3823: SEA 2026-12-16 13:55:00 → DEN 2026-12-16 17:30:00; nonstop; 155 minutes. Local airport times.
• Southwest Airlines WN244: DEN 2026-12-21 15:40:00 → SEA 2026-12-21 17:50:00; nonstop; 190 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $306.25

• Alaska Airlines AS682: SEA 2026-12-16 07:25:00 → DEN 2026-12-16 11:10:00; nonstop; 165 minutes. Local airport times.
• Alaska Airlines AS493: DEN 2026-12-21 15:22:00 → SEA 2026-12-21 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $318.50

• Delta Air Lines DL1358: SEA 2026-12-16 09:13:00 → DEN 2026-12-16 13:04:00; nonstop; 171 minutes. Local airport times.
• Delta Air Lines DL2543: DEN 2026-12-21 18:35:00 → SEA 2026-12-21 20:46:00; nonstop; 191 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $330.75

• United Airlines UA1218: SEA 2026-12-16 19:10:00 → DEN 2026-12-16 22:55:00; nonstop; 165 minutes. Local airport times.
• United Airlines UA2271: DEN 2026-12-21 07:40:00 → SEA 2026-12-21 09:49:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $315.13

• Southwest Airlines WN3434 / WN1410: SEA 2026-12-16 05:40:00 → DEN 2026-12-16 13:10:00; 1 stop(s) via PHX; 390 minutes. Local airport times.
  • WN3434: SEA 2026-12-16 05:40:00 → PHX 2026-12-16 09:30:00; layover at PHX: 110 minutes.
  • WN1410: PHX 2026-12-16 11:20:00 → DEN 2026-12-16 13:10:00.
• Southwest Airlines WN244: DEN 2026-12-21 15:40:00 → SEA 2026-12-21 17:50:00; nonstop; 190 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $315.13

• Southwest Airlines WN3833 / WN2542: SEA 2026-12-16 05:15:00 → DEN 2026-12-16 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2026-12-16 05:15:00 → SMF 2026-12-16 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2026-12-16 09:15:00 → DEN 2026-12-16 12:30:00.
• Southwest Airlines WN244: DEN 2026-12-21 15:40:00 → SEA 2026-12-21 17:50:00; nonstop; 190 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $326.25

• Alaska Airlines AS2238 / AS684: SEA 2026-12-16 07:38:00 → DEN 2026-12-16 14:24:00; 1 stop(s) via PDX; 346 minutes. Local airport times.
  • AS2238: SEA 2026-12-16 07:38:00 → PDX 2026-12-16 08:35:00; layover at PDX: 129 minutes.
  • AS684: PDX 2026-12-16 10:44:00 → DEN 2026-12-16 14:24:00.
• Alaska Airlines AS493: DEN 2026-12-21 15:22:00 → SEA 2026-12-21 17:31:00; nonstop; 189 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $338.50

• Delta Air Lines DL1120 / DL1586: SEA 2026-12-16 13:25:00 → DEN 2026-12-16 20:32:00; 1 stop(s) via SLC; 367 minutes. Local airport times.
  • DL1120: SEA 2026-12-16 13:25:00 → SLC 2026-12-16 16:26:00; layover at SLC: 153 minutes.
  • DL1586: SLC 2026-12-16 18:59:00 → DEN 2026-12-16 20:32:00.
• Delta Air Lines DL2543: DEN 2026-12-21 18:35:00 → SEA 2026-12-21 20:46:00; nonstop; 191 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 15, 2026 · Return options
• Dec 17, 2026 · Return options
• Hotels in Denver with Axel

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