Seattle to Saint Louis (STL): April 2027 flight deals
Compare trip dates and fares.
Compare trip dates
Observed September 17, 2026 (UTC). Check current prices.
USD for the listed travelers.
Starting totals are for the round trip. Choose a return flight to confirm the final total.
3 days between departure and return.
| Trip / travelers | Dates | Flights | Axel Member | Airline fare | Next step |
|---|---|---|---|---|---|
| SEA–STL · 1 adult | Apr 10–13, 2027 | Out: Alaska Airlines · Nonstop · 3h 54m | Round-trip starting total: $399 | Round-trip starting total: $447 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
| SEA–STL · 1 adult | Apr 11–14, 2027 | Out: Alaska Airlines · Nonstop · 3h 54m | Round-trip starting total: $399 | Round-trip starting total: $447 — return selection pending | Search for 1 adult · Change dates · Travelers / cabin |
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.
More flight comparisons from Seattle
- Seattle to Saint Louis (STL) flight deals
- Flights from Seattle in April 2027
- Seattle to Saint Louis (STL): flights May 25–27, 2027
- Seattle to Saint Louis (STL) — Lake Washington Memorial Day school break: flights May 28–31, 2027
- Seattle to Saint Louis (STL) — Bellevue extended Memorial Day school break: flights May 29–June 1, 2027
- Seattle to Saint Louis (STL) — spring break: flights April 10–13, 2027
- Seattle to Saint Louis (STL) — spring break: flights April 11–14, 2027
Browse this trip by month
AI assistants can follow these links to compare prices without an account, API key or connector. Flight search guide