Cheap flights from San Francisco to St. Louis

San Francisco
SFO
Lambert-St. Louis
STL

Flight deals from San Francisco to St. Louis

Below you can see the best deals on flights San Francisco — St. Louis for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 20 October, from $116.

Top 10 cheap flights from San Francisco to St. Louis

About the San Francisco — St. Louis flight

Looking for cheap flights from San Francisco to St. Louis? Compare fares from different airlines, check the flight schedule and travel time — and book your San Francisco — St. Louis ticket online at the best price.

The route has direct flights — around 13 flights per week, flights are operated by United Airlines, Southwest Airlines, a nonstop flight takes about 4 h 5 min, the distance between the cities is around 2,809 km.

Planning your trip? You may find our St. Louis travel guide, how to get from the airport into town and St. Louis weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $95Min. price
NovemberCheapest
FebruaryPeak season
YesDirect flights
2,809 kmDistance
4 h 5 minTravel time
2Airlines
13 / wkFlights

Flight schedule from San Francisco to St. Louis

The table shows direct flights from San Francisco to St. Louis on the selected date. The flight takes approximately 4 h 5 min. Regular flights are operated by United Airlines and Southwest Airlines. Departures from San Francisco International Airport airports, arrivals at Lambert-St. Louis International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 08 Sep 2026

Flight ticket prices by day: San Francisco — St. Louis

Below is a calendar of the lowest flight ticket prices for San Francisco — St. Louis by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $95 in November, and the most expensive are around $212 in February. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from San Francisco to St. Louis by month. Tickets are usually cheapest in September (around $200) and priciest in March (about $273) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$218mediumMay$236mediumSep$200low
Feb$264highJun$254highOct$209low
Mar$273highJul$264highNov$254high
Apr$227mediumAug$245mediumDec$264high

Some values are estimated based on seasonality.

When to fly

Weather in St. Louis: it is warmest in July (up to 31 °C on average) and coolest in January (around 5 °C). The driest month is September.

Tickets are usually cheapest in November and most expensive in February. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · St. Louis

Dry and wet days · St. Louis

Wind speed and direction · St. Louis

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How to get the best deal on a San Francisco — St. Louis ticket

  • Book ahead: fares for San Francisco — St. Louis are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to St. Louis is usually November — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the San Francisco — St. Louis route are operated by 2 airlines; United Airlines runs the most flights (around 92% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    4x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight SFO → STL4x/week
      Duration
      5h 58m
      Days
      MTWTFSS
    92.3%Open →
  • Southwest AirlinesWN
    1x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight SFO → STL1x/week
      Duration
      3h 50m
      Days
      MTWTFSS
    7.7%Open →

Cities and airports on the San Francisco — St. Louis route

Flights San Francisco — St. Louis depart from San Francisco International Airport and arrive at Lambert-St. Louis International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

San Francisco

SFO
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

St. Louis

STL
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the San Francisco — St. Louis flight

How long is the flight from San Francisco to St. Louis?

A nonstop San Francisco — St. Louis flight takes about 4 h 5 min — the distance between the cities is around 2,809 km.

How far is it from San Francisco to St. Louis?

The distance from San Francisco to St. Louis is about 2,809 km, which a nonstop flight covers in around 4 h 5 min.

Are there direct flights from San Francisco to St. Louis?

Yes, there are nonstop flights San Francisco — St. Louis — around 13 flights per week.

Which airlines fly from San Francisco to St. Louis?

Airlines operating San Francisco — St. Louis include United Airlines, Southwest Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do San Francisco — St. Louis flights use?

Flights from San Francisco depart from San Francisco International Airport, and arrive at Lambert-St. Louis International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from San Francisco to St. Louis?

The price of a San Francisco — St. Louis ticket depends on your travel date, season and demand: it is usually cheapest to fly in November, and most expensive in February. Tickets typically cost between $95 and $212. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights San Francisco — St. Louis?

Flights San Francisco — St. Louis are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is November. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from San Francisco to St. Louis?

To catch a low fare San Francisco — St. Louis, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually November.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from San Francisco

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Los AngelesNew York CitySeattleSan DiegoSanta AnaLas VegasBurbankBostonVancouverPhoenixPortlandLondonDenverPalm SpringsHonoluluDallasChicagoSalt Lake CityAustinAtlantaWashington, D.C.HoustonKahuluiTaipeiMinneapolisTorontoDetroitOrlandoSpokaneTokyoParisBoiseKapaaSan Jose del CaboPuerto VallartaRedmondSeoulFrankfurt am MainCalgaryMexico City

Where else you can fly from St. Louis

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ChicagoDallasNew York CityAtlantaSeattleMinneapolisTorontoDenverHoustonCharlotteWashington, D.C.DetroitPortlandBostonOrlandoPhoenixPhiladelphiaSalt Lake CityMontrealMiamiLos AngelesLas VegasCancunFort LauderdaleJonesboroLondonTampaFrankfurt am MainPunta CanaQuincyManhattan

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