Saint Louis (STL) to Seattle (SEA) · Nov 21, 2026 · one way

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: Saint Louis to Seattle (SEA) flight deals

2026-11-21 · one way · Axel-exclusive $212.50

• Alaska Airlines AS669: STL 2026-11-21 06:00:00 → SEA 2026-11-21 08:40:00; nonstop; 280 minutes. Local airport times.

2026-11-21 · one way · Axel-exclusive $187.50

• Southwest Airlines WN4144 / WN3141: STL 2026-11-21 17:25:00 → SEA 2026-11-21 22:50:00; 1 stop(s) via DEN; 445 minutes. Local airport times.
  • WN4144: STL 2026-11-21 17:25:00 → DEN 2026-11-21 18:55:00; layover at DEN: 105 minutes.
  • WN3141: DEN 2026-11-21 20:40:00 → SEA 2026-11-21 22:50:00.

2026-11-21 · one way · Axel-exclusive $193.75

• American Airlines AA3198 / AS407: STL 2026-11-21 11:37:00 → SEA 2026-11-21 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
  • AA3198: STL 2026-11-21 11:37:00 → ORD 2026-11-21 12:59:00; layover at ORD: 140 minutes.
  • AS407: ORD 2026-11-21 15:19:00 → SEA 2026-11-21 18:11:00.

2026-11-21 · one way · Axel-exclusive $206.25

• Delta Air Lines DL1597 / DL868: STL 2026-11-21 06:03:00 → SEA 2026-11-21 10:45:00; 1 stop(s) via MSP; 402 minutes. Local airport times.
  • DL1597: STL 2026-11-21 06:03:00 → MSP 2026-11-21 07:43:00; layover at MSP: 62 minutes.
  • DL868: MSP 2026-11-21 08:45:00 → SEA 2026-11-21 10:45:00.

2026-11-21 · one way · Axel-exclusive $212.50

• Alaska Airlines AS618: STL 2026-11-21 16:04:00 → SEA 2026-11-21 18:44:00; nonstop; 280 minutes. Local airport times.

2026-11-21 · one way · Axel-exclusive $187.50

• Southwest Airlines WN2467 / WN2455: STL 2026-11-21 18:40:00 → SEA 2026-11-22 01:00:00; 1 stop(s) via PHX; 500 minutes. Local airport times.
  • WN2467: STL 2026-11-21 18:40:00 → PHX 2026-11-21 21:00:00; layover at PHX: 105 minutes.
  • WN2455: PHX 2026-11-21 22:45:00 → SEA 2026-11-22 01:00:00.

2026-11-21 · one way · Axel-exclusive $206.25

• Delta Air Lines DL1102 / DL714: STL 2026-11-21 14:31:00 → SEA 2026-11-21 20:50:00; 1 stop(s) via ATL; 499 minutes. Local airport times.
  • DL1102: STL 2026-11-21 14:31:00 → ATL 2026-11-21 17:05:00; layover at ATL: 68 minutes.
  • DL714: ATL 2026-11-21 18:13:00 → SEA 2026-11-21 20:50:00.

2026-11-21 · one way · Axel-exclusive $206.25

• Delta Air Lines DL2363 / DL2995: STL 2026-11-21 07:08:00 → SEA 2026-11-21 12:36:00; 1 stop(s) via SLC; 448 minutes. Local airport times.
  • DL2363: STL 2026-11-21 07:08:00 → SLC 2026-11-21 09:36:00; layover at SLC: 99 minutes.
  • DL2995: SLC 2026-11-21 11:15:00 → SEA 2026-11-21 12:36:00.

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
• Nov 20, 2026 · Return options
• Nov 22, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Saint Louis (STL) to Seattle (SEA) · Nov 21, 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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