Find Seattle to St. Louis flights starting at US$76.
Book one-way or return flights from Seattle to St. Louis from as little as US$76. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- SEA22:0310h 39m1 stopSTL10:42Mon, Jun 24|Seattle - St. Louis|Frontier AirlinesUS$76US$10426% OFF26% OFFUS$104US$76
- SEA21:4910h 53m1 stopSTL10:42Mon, Jun 10|Seattle - St. Louis|Frontier AirlinesUS$77US$10426% OFF26% OFFUS$104US$77
- SEA22:0310h 39m1 stopSTL10:42Mon, Jun 17|Seattle - St. Louis|Frontier AirlinesUS$77US$10426% OFF26% OFFUS$104US$77
- SEA20:1211h 17m1 stopSTL09:29Tue, Jun 11|Seattle - St. Louis|Frontier AirlinesUS$78US$78
- SEA22:1014h 56m1 stopSTL15:06Tue, Jul 16|Seattle - St. Louis|Spirit AirlinesUS$82US$82
- SEA05:107h 56m1 stopSTL15:06Wed, Jul 24|Seattle - St. Louis|Spirit AirlinesUS$82US$82
- SEA20:1211h 17m1 stopSTL09:29Tue, Jun 25|Seattle - St. Louis|Frontier AirlinesUS$84US$84
- SEA21:4114h 51m1 stopSTL14:32Wed, Jun 12|Seattle - St. Louis|Frontier AirlinesUS$85US$85
- SEA20:1211h 17m1 stopSTL09:29Tue, Jun 18|Seattle - St. Louis|Frontier AirlinesUS$85US$85
- SEA22:1014h 56m1 stopSTL15:06Tue, Jul 23|Seattle - St. Louis|Spirit AirlinesUS$88US$88
- SEA13:003h 5mDirectSTL14:00Wed, Jun 12|Seattle - St. Louis|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Seattle to St. Louis.
- CheapestSEA22:0310h 39m1 transferSTL10:42Seattle-Tacoma International Airport - St. Louis Lambert International AirportMon, Jun 24Frontier AirlinesUS$76
- SEA22:0310h 39m1 transferSTL10:42Seattle-Tacoma International Airport - St. Louis Lambert International AirportMon, Jun 24Frontier AirlinesUS$76Find More Flights
How do I find the cheapest flights?
How to find a cheap flight from Seattle to St. Louis
Cheapest direct flight price | US$76 |
---|---|
Cheapest return ticket price | US$202 |
Cheapest month | May |
Peak season for travel | December |
Flight distance | 2,765.15km |
Average flight time | 3 hours 52 minutes |
Popular airline | Alaska Airlines |
Plan Your Trip Around St. Louis
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