Seattle to Saint Louis (STL) flight deals
Compare Seattle to Saint Louis (STL) flights across upcoming months. See dated fares below, or choose your own dates and travelers.
Flights from Seattle (SEA) · Seattle to United States flight deals
Browse fares by month
September 2026 · October 2026 · November 2026 · December 2026 · January 2027 · February 2027 · March 2027 · April 2027 · May 2027 · June 2027 · July 2027 · August 2027
Fares observed September 16 – 17, 2026. USD for the travelers shown. Search a trip for current prices. For starting totals, choose a return flight to confirm the final price.
October 2026
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Oct 1–23, 2026 · 22 days | 1 stop / 1 stop · 11h 32m / 21h 12m | $307 | $341 | Search |
Round-trip totals in USD for 1 adult · Economy · 3 days.
| Destination | Trip dates | Axel Member | Airline fare | Stops | Search |
|---|---|---|---|---|---|
| Saint Louis (STL) | Oct 2–5, 2026 | $288 | $320 | 1 stop | Search |
April 2027
1 adult · Economy · Round-trip starting totals
| Travel dates | Outbound flight | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Apr 10–13, 2027 · 3 days | Nonstop · 3h 54m | From $399 | From $447 | Search |
May 2027
Round-trip totals in USD for 1 adult · Economy · 2 days.
| Destination | Trip dates | Axel Member | Airline fare | Stops | Search |
|---|---|---|---|---|---|
| Saint Louis (STL) | May 25–27, 2027 | $399 | $447 | Nonstop | Search |
Non-members can also book and save on airline fares. Live search shows prices with and without Membership. Optional Membership: $15 for the first month, then $10/month. Cancel anytime.
Explore specific trips
- Seattle to Saint Louis (STL): flights September 18–20, 2026
- Seattle to Saint Louis (STL): flights September 18–21, 2026
- Seattle to Saint Louis (STL): flights September 21–23, 2026
- Seattle to Saint Louis (STL): flights September 24–27, 2026
- Seattle to Saint Louis (STL): flights September 25–27, 2026
- Seattle to Saint Louis (STL): flights September 25–28, 2026
More dates by month
- September 2026
- October 2026
- November 2026
- December 2026
- January 2027
- February 2027
- March 2027
- April 2027
- May 2027
- June 2027
- July 2027
- August 2027
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