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Cheap Flights from Seattle to St. Louis $190.6

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Cheapest Flights from Seattle to St. Louis (SEA to STL)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Seattle to St. Louis (SEA to STL)

Question : Looking for the fastest flight from SEA to STL?
Answer : The quickest direct flight is 3 hours and 41 minutes via Alaska Airlines. If you catch the 12:05 PM PST departure, you'll arrive at 5:46 PM CST (remember, there is a two-hour time change).

Question : Who's offering the cheapest round-trip flight to Lambert-St. Louis International Airport (STL) over the coming months?
Answer : United Airlines is your best bet for finding that coveted low fare.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : Wednesday is your lowest-cost day to fly in February. Flexibility is paramount when booking travel plans in order to keep costs down.

Question : How many different departure times are there each day?
Answer : On average, there are two options. That is lower than the global average of 31.

Question : Looking for the cheapest flight over the next 30 days?
Answer : As of January 23rd, the cheapest day to fly from Seattle to Saint Louis is February 9th. Tickets have been sold for 28% below the average price for this route.