Seattle to Cahokia/St Louis (SEA–CPS) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Last scheduled nonstop: Apr 2026.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
SEA–CPS had nonstop service from Sun Country Airlines, last on the schedule in April 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 1,722 miles in 3h 34m.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| SY Sun Country Airlines | 0 | – | – | – | – |
On-Time Performance
Travel Essentials
SEA: PDT · CPS: CDT
When it's 6:00 PM in Seattle, it's 8:00 PM in Cahokia/St Louis.
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
SEA–CPS Quick Facts
Frequently Asked Questions
Flights from SEA to CPS
Seattle–Tacoma International Airport (SEA) and St Louis Downtown Airport (CPS) had nonstop service from Sun Country Airlines, last on the schedule in April 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.
SEA to CPS Flight Duration and Schedule
Nonstop flight time from SEA to CPS is about 3 hours 34 minutes gate to gate. The route covers a distance of 1,722 miles (2,771 km).