Cheap flights from Buffalo to St. Louis from $119
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to St. Louis departing on 4/7. 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 Buffalo to St. Louis
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How to get the cheapest flight ticket from Buffalo 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, August is the cheapest month to fly from Buffalo to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $276. The month of September is another great option to travel to St. Louis, with average flight prices from Buffalo averaging around $296.
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 Wednesday when prices can be found for as low as $326. 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 Monday because tickets tend to average around $486. 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 Buffalo at noon is the least expensive time of day to depart. momondo users have found prices as low as $328 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $416 per ticket.
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Buffalo when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $349 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Buffalo for as low as $280 on momondo.
What is the cheapest airline that flies from Buffalo to Lambert-St Louis?
Frontier, American Airlines, and Southwest are the most popular carriers operating from Buffalo to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to St. Louis from Buffalo according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Buffalo to St. Louis
Cheap Buffalo to St. Louis (BUF to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Buffalo to St. Louis
How far is Buffalo to Lambert-St Louis by plane?
A flight from Buffalo to Lambert-St Louis will travel around 660.3 mi. Flights usually cover this in 3h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Buffalo Airport to Lambert-St Louis Airport?
Prices for flights from Buffalo Airport to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Buffalo Airport to Lambert-St Louis Airport?
There are 4 operators available for flights from Buffalo Airport to Lambert-St Louis Airport as of March 2025.
How old do you have to be to fly from Buffalo Airport 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 from Buffalo Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Buffalo to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Buffalo to St. Louis is American Airlines (42% of total bookings). The next most popular airlines are Delta (41%), Southwest (11%), and United Airlines (6%).
Best airlines flying from Buffalo to St. Louis
Compare and see reviews for airlines that fly from Buffalo to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $125 | Free Cancellation | Rating 6.0 3,276 reviews | |||
| PriceFrom $243 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.4 8,614 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 8.0 7,899 reviews | |||
| PriceFrom $312 | Free Cancellation | Rating 8.0 4,276 reviews |
Southwest Flights From Buffalo to St. Louis
Southwest flight deals from Buffalo to St. Louis start from $312 round-trip. Over the 3 Southwest flights for this route in a normal week, average airfare is usually $416 round-trip - but some users have found much cheaper deals with momondo.
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Why should I use momondo to find a flight deal from Buffalo to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Buffalo to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Buffalo to St. Louis with flexible booking policies on momondo?
All flight searches from Buffalo to St. Louis on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Buffalo to St. Louis?
Once all potential Buffalo to 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 from Buffalo 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 Buffalo and alert you when they change.