Cheap flights from St. Louis, MO to San Francisco, CA

Flights starting at £66. Choose between United Airlines, Frontier Airlines, or Alaska Airlines to find the best price.

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Tips to know when travelling to San Francisco

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Book your trip to arrive at San Francisco International, San Francisco, CA Train Station, or San Francisco, CA - Fisherman’s Wharf. The most popular airlines for this route are United Airlines, Frontier Airlines, Alaska Airlines, Spirit Airlines, and Iberia Airlines. St. Louis and San Francisco have 150 direct flights per week. When you arrive at San Francisco, consider visiting Alcatraz, Big Sur, and Golden Gate Bridge.

Check-in for a flight from St. Louis to San Francisco

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Iberia AirlinesIBEIBYesOpens 24 days before flight
Closes 3 hours before flight

Weather in San Francisco

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January14°C7°C
February15°C8°C
March15°C8°C
April17°C9°C
May19°C10°C
June21°C12°C
July22°C13°C
August22°C14°C
September23°C14°C
October21°C13°C
November17°C10°C
December13°C8°C
Hottest Month
23°C
September
Coldest month
7°C
January
Sunny days
332
days per year

14 day forecast

Sunday
10 Mar
94%
13°C10°C
17 Mar
17°C12°C
Monday
11 Mar
86%
13°C9°C
18 Mar
19°C12°C
Tuesday
12 Mar
88%
14°C11°C
19 Mar
15°C11°C
Wednesday
13 Mar
15°C8°C
20 Mar
14°C10°C
Thursday
14 Mar
17°C11°C
21 Mar
14°C10°C
Friday
15 Mar
18°C10°C
22 Mar
15°C9°C
Saturday
16 Mar
17°C11°C
23 Mar
15°C9°C

Frequently asked questions

What are the most popular routes to and from St. Louis?
What are the most popular routes to and from San Francisco?
What airports are near St. Louis?
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Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and San Francisco?
What is Virtual Interlining and how do I use it?
Which airlines fly between St. Louis and San Francisco?
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What flights operate between St. Louis and San Francisco?
How many airports are there near St. Louis?
How many airports are there near San Francisco?
What time do nonstop (direct) flights between St. Louis and San Francisco depart?
What time do nonstop (direct) flights between St. Louis and San Francisco arrive?
What time do flights between St. Louis and San Francisco depart?
What time do flights between St. Louis and San Francisco arrive?

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