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Cheap Flights from Seattle to St. Louis $217.6

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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 : How many departure times from Seattle-Tacoma International Airport (SEA) to Lambert-St. Louis International Airport (STL) are there on a daily basis?
Answer : Each day is different, but on average, you can expect to see three available departure times. Compared to the average route departing the United States with five flight times, you'll have fewer options.

Question : If traveling from SEA to STL, how long can you expect to be in the air?
Answer : The average flight duration between SEA and STL is three hours and 44 minutes.

Question : Which airline can you expect delays with on this route?
Answer : 15% of Alaska Airlines flights from Seattle-Tacoma International Airport (SEA) to Lambert-St. Louis International Airport (STL) are late. If you should choose this airline, be sure to track the flight status to stay on top of the departure time.

Question : Would you be willing to change your travel days if it saved you money?
Answer : The lowest-cost day to fly in May is Monday. Flexibility is paramount when booking travel plans in order to keep travel costs down.

Question : If punctuality is required for you to book a flight, which airline is your best bet?
Answer : Southwest Airlines holds the best record for flights from SEA to STL with an 88% on-time rate. If they are delayed for some reason though, the average delay is less than half an hour.

Question : Do some days of the week have more flight times than others?
Answer : When you’re flying from SEA to STL, the day with the most flight times is Sunday, with three different options. However, with two flight times, Tuesday doesn't offer quite as many options when finding that perfect departure time.

Question : Is this route your best bet for getting to Saint Louis with minimal delays?
Answer : SEA to STL currently scores 4 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 4 stars, you should feel at ease about getting to Saint Louis on time.