Cheap flights from San Francisco Bay Area to St. Louis from $111
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco Bay Area to St. Louis departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from San Francisco Bay Area to St. Louis
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How to get the cheapest flight ticket from San Francisco Bay Area to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, January is the cheapest month to fly from San Francisco Bay Area to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $329. The month of February is another great option to travel to St. Louis, with average flight prices from San Francisco Bay Area averaging around $339.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $421. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $468. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from San Francisco Bay Area at noon is the least expensive time of day to depart. momondo users have found prices as low as $415 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $452 per ticket.
What is the cheapest San Francisco Bay Area to Lambert-St Louis flight route?
Fly from San Francisco to Lambert-St Louis for the best San Francisco Bay Area - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from San Francisco Bay Area when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $397 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from San Francisco Bay Area for as low as $364 on momondo.
What cabin class options are available on San Francisco Bay Area to Lambert-St Louis flights?
There are 4 cabin classes available to choose from on San Francisco Bay Area to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Francisco Bay Area to Lambert-St Louis?
Sun Country Air, Frontier, and Spirit Airlines are the most popular carriers operating from San Francisco Bay Area to Lambert-St Louis
What airlines fly to St. Louis?
United Airlines, Southwest and Delta are the top three most popular airlines that fly to St. Louis from San Francisco Bay Area according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Francisco Bay Area to St. Louis on average per day?
7 flights are operational daily from San Francisco Bay Area to St. Louis as of June 2025. The most popular departure time for this route is 11:00AM, with 73% of flights per day taking off at noon.
How many flights depart from San Francisco Bay Area to St. Louis on average per week?
55 flights are operational weekly from San Francisco Bay Area to St. Louis as of June 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.
Cheap San Francisco Bay Area to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco Bay Area to St. Louis
When did momondo last update prices for flights from San Francisco Bay Area to Lambert-St Louis Airport?
Prices for flights from San Francisco Bay Area to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from San Francisco Bay Area to Lambert-St Louis Airport?
There are 6 operators available for flights from San Francisco Bay Area to Lambert-St Louis Airport as of June 2025.
How old do you have to be to fly from San Francisco Bay Area to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Bay Area to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco Bay Area to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco Bay Area to St. Louis is Boeing 737-800 Passenger/BBJ2 (winglets) (16.28% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (14.80%), Boeing 737 MAX 8 (13.47%), and Embraer 175 (10.78%).
Best airlines flying from San Francisco Bay Area to St. Louis
Compare and see reviews for airlines that fly from San Francisco Bay Area to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $108 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $310 | Free Cancellation | Rating 8.0 4,287 reviews | |||
| PriceFrom $432 | Free Cancellation | Rating 8.0 10,000 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Francisco Bay Area to St. Louis?
It is quick and easy to find San Francisco Bay Area to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.
Can I find flights from San Francisco Bay Area to St. Louis with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for San Francisco Bay Area to St. Louis flights to just show those with flexible booking policies.
How can momondo help me find flights from San Francisco Bay Area to St. Louis?
Once you have performed a search for San Francisco Bay Area to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Francisco Bay Area to St. Louis right now. Can momondo alert me if prices change?
If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from San Francisco Bay Area and alert you when they change.