Cheap flights from St. Louis to Buffalo 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 St. Louis to Buffalo departing on 6/30. 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 St. Louis to Buffalo
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Delta flights from St. Louis to Buffalo
Our best Delta deals on St. Louis to Buffalo flight tickets
American Airlines flights from St. Louis to Buffalo
Our best American Airlines deals on St. Louis to Buffalo flight tickets
See travel insights to Buffalo from
How to get the cheapest flight ticket from St. Louis to Buffalo
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 Buffalo?
If you aren’t able to travel during the month of October, then book flights to Buffalo from St. Louis during August instead. Flights to Buffalo in August, while not as cheap as those in October, still average around $341.
What is the cheapest day to depart on your flight to Buffalo?
Our data shows that Wednesday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $332. Flights from St. Louis to Buffalo on a Saturday will generally be more expensive and average around $386. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Buffalo?
In the evening is the cheapest time of day to fly from St. Louis to Buffalo when you can find flight prices for as low as $248. Flying to Buffalo in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Buffalo, so prices are often more expensive at around $371 per ticket.
How far in advance should I book a flight to Buffalo?
You are more likely to see cheaper flights to Buffalo from St. Louis when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $403 when searching 20 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from St. Louis for as low as $276 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Buffalo?
Delta, Frontier, and United Airlines are the most popular carriers operating from Lambert-St Louis to Buffalo
What airlines fly to Buffalo?
American Airlines, Delta and Southwest are the top three most popular airlines that fly to Buffalo from St. Louis according to our data. American Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Buffalo. Keep in mind that there are 4 different airlines that fly to Buffalo on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Buffalo
Cheap St. Louis to Buffalo (STL to BUF) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Buffalo
How far is Lambert-St Louis to Buffalo by plane?
Buffalo is 660.3 mi away from Lambert-St Louis. Typically, this will take 3h 54m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Buffalo Airport?
Prices for flights from Lambert-St Louis Airport to Buffalo Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Buffalo Airport?
As of June 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Buffalo Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Buffalo 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 Lambert-St Louis Airport to Buffalo Airport.
What documentation or ID do you need to fly to Buffalo Airport?
The travel and health documents required for your trip to Buffalo 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 Buffalo Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Buffalo?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Buffalo is American Airlines, representing 38% of all bookings. The subsequent popular airlines are Delta at 33%, Southwest at 18%, and United Airlines at 11%.
Best airlines flying from St. Louis to Buffalo
Compare and see reviews for airlines that fly from St. Louis to Buffalo with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $179 | Free Cancellation | Rating 7.4 8,791 reviews | |||
| PriceFrom $200 | Free Cancellation | Rating 8.0 7,956 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $306 | Free Cancellation | Rating 8.0 4,287 reviews |
Traveling to a place near Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Buffalo?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Buffalo. momondo saves you time and could save you money on your trip.
Can I find flights from St. Louis to Buffalo with flexible booking policies on momondo?
Yes. All flights to Buffalo from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from St. Louis to Buffalo?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buffalo from St. Louis.
I’m not ready to book a flight from St. Louis to Buffalo right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Buffalo from St. Louis. 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.