Cheap flights from Seattle, WA to St. Louis, MO
Flights starting at $167. Choose between Alaska Airlines, United Airlines, or Sun Country Airlines to find the best price.
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Cheapest one-way trip | $167 |
---|---|
Cheapest nonstop round-trip | $197 |
Cheapest round-trip | $275 |
Average round-trip | $355 |
Nonstop flights in June | $197 – $322 |
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Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to St. Louis. The distance between Seattle and St. Louis is 2747 km. The most popular airlines for this route are Alaska Airlines, United Airlines, and Sun Country Airlines. Seattle and St. Louis have 40 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Seattle to St. Louis in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 26.05 - Sat 01.06
Airline | Sun 26.05 | Mon 27.05 | Tue 28.05 | Wed 29.05 | Thu 30.05 | Fri 31.05 | Sat 01.06 |
---|---|---|---|---|---|---|---|
3 | 3 | 3 | 3 | 3 | 3 | 3 |
Weekly direct flights for Sun 02.06 - Sat 08.06
Airline | Sun 02.06 | Mon 03.06 | Tue 04.06 | Wed 05.06 | Thu 06.06 | Fri 07.06 | Sat 08.06 |
---|---|---|---|---|---|---|---|
3 | 3 | 3 | 3 | 3 | 3 | 3 |
Weekly direct flights for Sun 09.06 - Sat 15.06
Airline | Sun 09.06 | Mon 10.06 | Tue 11.06 | Wed 12.06 | Thu 13.06 | Fri 14.06 | Sat 15.06 |
---|---|---|---|---|---|---|---|
3 | 3 | 3 | 3 | 3 | 3 | 3 |
Weekly direct flights for Sun 16.06 - Sat 22.06
Airline | Sun 16.06 | Mon 17.06 | Tue 18.06 | Wed 19.06 | Thu 20.06 | Fri 21.06 | Sat 22.06 |
---|---|---|---|---|---|---|---|
3 | 3 | 3 | 3 | 3 | 3 | 3 |
Check-in for a flight from Seattle to St. Louis
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Sun Country Airlines | SCX | SY | Yes | No |
Weather in St. Louis
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 3°C | -3°C |
February | 6°C | -2°C |
March | 13°C | 3°C |
April | 18°C | 8°C |
May | 24°C | 14°C |
June | 29°C | 19°C |
July | 31°C | 21°C |
August | 30°C | 20°C |
September | 27°C | 16°C |
October | 20°C | 10°C |
November | 12°C | 3°C |
December | 7°C | 0°C |
14 day forecast
Frequently asked questions
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