$36 Cheap flights to St. Louis
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 10/23. 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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St. Louis flights insights and trends
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What is the cheapest month to fly to St. Louis?
In general, January is the cheapest month to fly from United States to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. The month of March is another great option to travel to St. Louis, with average flight prices from United States averaging around $308.
What is the absolute cheapest flight to St. Louis?
Users booking trips to St. Louis from Detroit found flights 51% cheaper than the average price of flights to St. Louis. To find the cheapest price to St. Louis from your area, use momondo’s Airport-to-Airport Pricing Tool.
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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 Tuesday when prices can be found for as low as $331. 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 $435. 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 United States in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $349 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $402 per ticket.
Cheapest flights to Lambert-St Louis
Find the cheapest flights to Lambert-St Louis from your nearest city or airport
| CHEAPEST MONTH TO FLY TO ST. LOUIS FROM LOS ANGELES | August | 15% cheaper | Flying from Los Angeles to St. Louis costs on average just $342 in August |
| MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM LOS ANGELES | December | 19% more expensive | It costs about $478 for flights to St. Louis from Los Angeles in December |
| MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM LOS ANGELES | August | 155% more users visited | More momondo users searched in flights to St. Louis from Los Angeles in August than any other month |
Cheap St. Louis flight deals and tips
Summary info about St. Louis flight prices, duration and airlines
Best One-Way Price | $36 |
|---|---|
Best Round-Trip Price | $78 |
Fastest flight time | 1h 48m |
Popular in | December |
Frequently asked questions about flying to St. Louis
How far in advance should I book a flight to St. Louis?
The best time to book a flight to St. Louis from United States is 62 days out, which is when prices tend to be around $333. In the past 72 hours, momondo users found flights from United States to St. Louis for as low as $247.
Is there an alternative airport near St. Louis?
Finding an alternative and possibly cheaper destination airport near St. Louis is possible. If you are planning a flight to St. Louis, consider booking flights to Belleville Airport (22 mi from St. Louis city center), Marion Williamson County Airport (88 mi from St. Louis city center) or Springfield Capital Airport (88 mi from St. Louis city center).
Is there a cheaper alternative to flying into St. Louis?
The cheapest airport near St. Louis is typically Belleville Airport with an average price of $164/person. These prices vary based on where travelers are coming from. It is suggested that travelers looking to save money try momondo’s Airport-to-Airport Pricing Tool.
When did momondo last update prices for flights to Lambert-St Louis Airport?
Prices for flights to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights to Lambert-St Louis Airport?
There are 25 operators available for flights to Lambert-St Louis Airport as of July 2025.
How old do you have to be to fly to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel 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.
Traveling to a place near St. Louis?
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Why should I use momondo to find a flight deal to St. Louis?
It is quick and easy to find flights to St. Louis 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 to St. Louis with flexible booking policies on momondo?
momondo does allow users to show only those flights to St. Louis which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights to St. Louis?
Once all potential St. Louis flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.