Cheap flights from North America to St. Louis from $36
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America 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.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from North America to St. Louis
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Frontier flights from North America to St. Louis
Our best Frontier deals on North America to St. Louis flight tickets
Delta flights from North America to St. Louis
Our best Delta deals on North America to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from North America 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 North America 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 North America averaging around $308.
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 North America 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.
What is the cheapest North America to Lambert-St Louis flight route?
Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best North America - 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 North America when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $328 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from North America for as low as $158 on momondo.
What cabin class options are available on North America to Lambert-St Louis flights?
There are 4 cabin classes available to choose from on North America 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 North America to Lambert-St Louis?
Frontier and Spirit Airlines are the most popular carriers operating from North America to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to St. Louis from North America according to our data. American Airlines is the first choice among our users, with 26% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 9 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 North America to St. Louis on average per day?
As of July 2025, there are 73 flights per day flying from North America to St. Louis. The most common time of day flights depart is 10:00PM, with 37% of flights taking off in the evening.
How many flights depart from North America to St. Louis on average per week?
As of July 2025, there are 512 flights per week flying from North America to St. Louis. The most common day of the week flights depart is Thu, with 30% of flights taking off on this day.
Cheap North America to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from North America to St. Louis
When did momondo last update prices for flights from North America to Lambert-St Louis Airport?
Prices for flights from North America to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from North America to Lambert-St Louis Airport?
As of July 2025, there are 9 operators available to choose from for flights from North America to Lambert-St Louis Airport.
How old do you have to be to fly from North America to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from North America to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from North America to St. Louis?
Based on momondo bookings for flights between North America and St. Louis, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 16.59% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 14.49%, Boeing 737 MAX 8 with 13.22%, and Embraer 175 with 11.09%.
Best airlines flying from North America to St. Louis
Compare and see reviews for airlines that fly from North America to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $45 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $91 | Free Cancellation | Rating 6.3 8,086 reviews | |||
| PriceFrom $133 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $150 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $163 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $177 | Free Cancellation | Rating 8.0 4,266 reviews | |||
| PriceFrom $193 | Free Cancellation | Rating 6.4 26 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 7.8 2,545 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 North America to St. Louis?
It is quick and easy to find North America 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 North America to St. Louis with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to St. Louis from North America with this policy.
How can momondo help me find flights from North America to St. Louis?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from North America to St. Louis.
I’m not ready to book a flight from North America to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from North America. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.