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) |
|---|---|---|---|---|---|---|---|
| SEA → STL AS647 | Economy | Alaska Atmos Rewards | 10,000 | $5.00 | 9 | ||
| SEA → STL AS618 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| SEA → STL AS618 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| SEA → STL AS618 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| SEA → STL AS647 | Economy | Alaska Atmos Rewards | 20,000 | $5.00 | 8 | ||
| SEA → STL AS647 | Economy | Alaska Atmos Rewards | 22,500 | $5.00 | 9 | ||
| SEA → STL AS618 | Economy | Alaska Atmos Rewards | 27,500 | $5.00 | 9 | ||
| SEA → STL AS647 | Economy | Alaska Atmos Rewards | 27,500 | $5.00 | 9 | ||
| SEA → STL AS618 | Economy | Alaska Atmos Rewards | 27,500 | $5.00 | 9 | ||
| SEA → STL AS647 | Economy | American Airlines | 30,000 | $5.00 | 3 | ||
| SEA → STL AS618 | Economy | American Airlines | 30,000 | $5.00 | 3 | ||
| SEA → STL AS618 | Economy | American Airlines | 30,000 | $5.00 | 3 |
Did you mean Flights from St Louis to Seattle?
Seattle
United StatesSEA
Seattle Tacoma International Airport
St Louis
United StatesSTL
Lambert St Louis International Airport
Seattle Tacoma International Airport (SEA) serves Seattle; Lambert St Louis International Airport (STL) serves St Louis.
The airports are 1,705 miles apart by great-circle distance.
Roame's current schedule feed shows nonstop service from SEA to STL.
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), United Airlines (UA) 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 Sep 28, 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, Star Alliance
Seattle Tacoma International Airport (SEA) is the origin airport and Lambert St Louis International Airport (STL) is the destination airport.
SEA and STL are approximately 1,705 miles apart by great-circle distance.
Yes. Roame's current schedule feed shows nonstop service from SEA to STL.
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), United Airlines (UA) 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 737, Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-800 Winglets (73H), Boeing 737-900 Winglets (73J), Boeing 737 MAX 8 (7M8) and JET.