Denver (DEN) to Seattle (SEA), Jun 1, 2027: from $138 one way

Denver (DEN) to Seattle (SEA), Jun 1, 2027: from $138 one way on Axel, checked Nov 14, 2026. Lowest published fare: $138 one way, Axel-exclusive, Frontier Airlines, nonstop, Jun 1, 2027, 1 adult, economy, checked Nov 14, 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: Denver to Seattle (SEA) flight deals

2027-06-01 · one way · Axel-exclusive $138

• Frontier Airlines F9605: DEN 2027-06-01 10:08:00 → SEA 2027-06-01 12:22:00; nonstop; 194 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $213

• Southwest Airlines WN244: DEN 2027-06-01 15:40:00 → SEA 2027-06-01 17:50:00; nonstop; 190 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $219

• Alaska Airlines AS309: DEN 2027-06-01 21:42:00 → SEA 2027-06-01 23:49:00; nonstop; 187 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $224

• Delta Air Lines DL1731: DEN 2027-06-01 06:05:00 → SEA 2027-06-01 08:23:00; nonstop; 198 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $224

• United Airlines UA2013: DEN 2027-06-01 16:10:00 → SEA 2027-06-01 18:12:00; nonstop; 182 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $288

• Air Canada AC575 / AC8804: DEN 2027-06-01 08:15:00 → SEA 2027-06-01 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
  • AC575: DEN 2027-06-01 08:15:00 → YVR 2027-06-01 10:25:00; layover at YVR: 185 minutes.
  • AC8804: YVR 2027-06-01 13:30:00 → SEA 2027-06-01 14:32:00.

2027-06-01 · one way · Axel-exclusive $138

• Frontier Airlines F94545: DEN 2027-06-01 13:32:00 → SEA 2027-06-01 15:43:00; nonstop; 191 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $213

• Southwest Airlines WN3141: DEN 2027-06-01 21:00:00 → SEA 2027-06-01 23:10:00; nonstop; 190 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $219

• Alaska Airlines AS682: DEN 2027-06-01 12:15:00 → SEA 2027-06-01 14:23:00; nonstop; 188 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $224

• Delta Air Lines DL2543: DEN 2027-06-01 18:35:00 → SEA 2027-06-01 20:46:00; nonstop; 191 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $224

• United Airlines UA310: DEN 2027-06-01 11:45:00 → SEA 2027-06-01 13:49:00; nonstop; 184 minutes. Local airport times.

2027-06-01 · one way · Axel-exclusive $161

• Frontier Airlines F92015 / F92407: DEN 2027-06-01 06:25:00 → SEA 2027-06-01 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
  • F92015: DEN 2027-06-01 06:25:00 → LAS 2027-06-01 07:37:00; layover at LAS: 112 minutes.
  • F92407: LAS 2027-06-01 09:29:00 → SEA 2027-06-01 12:27:00.

2027-06-01 · one way · Axel-exclusive $230

• Southwest Airlines WN3148 / WN1586: DEN 2027-06-01 13:55:00 → SEA 2027-06-01 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
  • WN3148: DEN 2027-06-01 13:55:00 → SMF 2027-06-01 15:30:00; layover at SMF: 70 minutes.
  • WN1586: SMF 2027-06-01 16:40:00 → SEA 2027-06-01 18:40:00.

2027-06-01 · one way · Axel-exclusive $230

• Southwest Airlines WN1660 / WN948: DEN 2027-06-01 07:30:00 → SEA 2027-06-01 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
  • WN1660: DEN 2027-06-01 07:30:00 → LAS 2027-06-01 08:30:00; layover at LAS: 90 minutes.
  • WN948: LAS 2027-06-01 10:00:00 → SEA 2027-06-01 13:00:00.

2027-06-01 · one way · Axel-exclusive $236

• Alaska Airlines AS686 / AS3217: DEN 2027-06-01 07:40:00 → SEA 2027-06-01 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
  • AS686: DEN 2027-06-01 07:40:00 → PDX 2027-06-01 09:39:00; layover at PDX: 75 minutes.
  • AS3217: PDX 2027-06-01 10:54:00 → SEA 2027-06-01 12:09:00.

2027-06-01 · one way · Axel-exclusive $247

• United Airlines UA1086 / AC8810: DEN 2027-06-01 15:53:00 → SEA 2027-06-01 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
  • UA1086: DEN 2027-06-01 15:53:00 → YVR 2027-06-01 18:04:00; layover at YVR: 166 minutes.
  • AC8810: YVR 2027-06-01 20:50:00 → SEA 2027-06-01 21:57:00.

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.

Explore this route

• All dates for this route
• May 31, 2027 · Return options
• Jun 2, 2027 · Return options
• Hotels in Seattle with Axel

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