A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.
Departure window: through .
| Route / flight | Departure | Cabin | Book with | Points | Fees (USD) | Seats seen | Observed (UTC) |
|---|---|---|---|---|---|---|---|
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| STL → SEA AS314 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| STL → SEA AS314 | Economy | Alaska Atmos Rewards | 20,000 | $5.00 | 9 | ||
| STL → SEA AS314 | Economy | Alaska Atmos Rewards | 20,000 | $5.00 | 9 | ||
| STL → SEA AS314 | Economy | Alaska Atmos Rewards | 20,000 | $5.00 | 8 | ||
| STL → SEA AS314 | Economy | Alaska Atmos Rewards | 22,500 | $5.00 | 9 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 22,500 | $5.00 | 9 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 22,500 | $5.00 | 3 | ||
| STL → SEA AS473 | Economy | Alaska Atmos Rewards | 27,500 | $5.00 | 1 |
Did you mean Flights from Seattle to St Louis?
St Louis
United StatesSTL
Lambert St Louis International Airport
Seattle
United StatesSEA
Seattle Tacoma International Airport
Lambert St Louis International Airport (STL) serves St Louis; Seattle Tacoma International Airport (SEA) serves Seattle.
The airports are 1,705 miles apart by great-circle distance.
Roame's current schedule feed shows nonstop service from STL to SEA.
Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA), Alaska Airlines (AS), Finnair (AY), Cathay Pacific (CX), Japan Airlines (JL), Qatar Airways (QR) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.
Published schedule dates span Oct 3, 2026 – Sep 19, 2027.
These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.
Airline alliance affiliations represented: Oneworld
Lambert St Louis International Airport (STL) is the origin airport and Seattle Tacoma International Airport (SEA) is the destination airport.
STL and SEA are approximately 1,705 miles apart by great-circle distance.
Yes. Roame's current schedule feed shows nonstop service from STL to SEA.
Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA), Alaska Airlines (AS), Finnair (AY), Cathay Pacific (CX), Japan Airlines (JL), Qatar Airways (QR) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.
Aircraft listed in the current schedule include Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-800 Winglets (73H), Boeing 737-900 Winglets (73J), Boeing 737 MAX 8 (7M8) and JET.