Cheap flights from Seattle, WA to St. Louis, MO

Flights starting at £78. Choose between Alaska Airlines, United Airlines, or Sun Country Airlines to find the best price.

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Tips to know when travelling to St. Louis

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, Sun Country Airlines, and Frontier Airlines. Seattle and St. Louis have 44 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 Mon 20.05 - Sun 26.05

AirlineMon 20.05Tue 21.05Wed 22.05Thu 23.05Fri 24.05Sat 25.05Sun 26.05
3333333

Weekly direct flights for Mon 27.05 - Sun 02.06

AirlineMon 27.05Tue 28.05Wed 29.05Thu 30.05Fri 31.05Sat 01.06Sun 02.06
3333333

Weekly direct flights for Mon 03.06 - Sun 09.06

AirlineMon 03.06Tue 04.06Wed 05.06Thu 06.06Fri 07.06Sat 08.06Sun 09.06
3333333

Weekly direct flights for Mon 10.06 - Sun 16.06

AirlineMon 10.06Tue 11.06Wed 12.06Thu 13.06Fri 14.06Sat 15.06Sun 16.06
3333333

Check-in for a flight from Seattle to St. Louis

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Sun Country AirlinesSCXSYYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight

St. Louis travel tips

1) Walk the bohemian neighborhood of St. Louis – South Grand
2) Louis is one of the most multicultural cities in the USA
3) Taste Bosnian cuisine at St. Louis restaurants

Weather in St. Louis

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January3°C-3°C
February6°C-2°C
March13°C3°C
April18°C8°C
May24°C14°C
June29°C19°C
July31°C21°C
August30°C20°C
September27°C16°C
October20°C10°C
November12°C3°C
December7°C0°C
Hottest Month
31°C
July
Coldest month
-3°C
January
Sunny days
261
days per year
Snow days
9
days per year

14 day forecast

Tuesday
21 May
75%
32°C20°C
28 May
86%
15°C13°C
Wednesday
22 May
87%
22°C16°C
29 May
75%
22°C11°C
Thursday
23 May
88%
25°C15°C
30 May
23°C12°C
Friday
24 May
82%
30°C19°C
31 May
25°C13°C
Saturday
25 May
25°C14°C
1 Jun
24°C17°C
Sunday
26 May
89%
28°C16°C
2 Jun
24°C17°C
Monday
27 May
79%
25°C14°C
3 Jun
88%
24°C17°C

Frequently asked questions

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