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STL - BUF

Find cheap flights from St. Louis to Buffalo from $119

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Buffalo departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
seg 6/3
seg 6/10

Search hundreds of travel sites at once for deals on flights to Buffalo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buffalo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buffalo, as well as popular online travel agencies
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Buffalo (STL-BUF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Buffalo that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:20 pm - 8:19 pmSTL-BUF
21h 59m1 stop
9:19 pm - 8:20 pmBUF-STL
24h 01m1 stop
$152Frontier
Find Deal
seg, ago 26 - dom, set 1
5:56 pm - 7:32 pmSTL-BUF
24h 36m1 stop
9:11 pm - 7:08 amBUF-STL
10h 57m1 stop
$206Frontier
Find Deal
sáb, mai 25 - sáb, jun 1
6:00 am - 11:17 amSTL-BUF
4h 17m1 stop
6:30 pm - 10:08 pmBUF-STL
4h 38m1 stop
$246American Airlines
Find Deal
dom, set 1 - dom, set 1
10:30 am - 6:19 pmSTL-BUF
6h 49m1 stop
6:15 am - 9:15 amBUF-STL
4h 00m1 stop
$286Delta
Find Deal
qua, jun 12 - dom, jun 16
5:38 pm - 12:23 amSTL-BUF
5h 45m1 stop
12:38 pm - 4:06 pmBUF-STL
4h 28m1 stop
$329American Airlines
Find Deal
qui, jun 13 - dom, jun 16
5:31 pm - 9:41 amSTL-BUF
15h 10m2 stops
10:05 am - 3:41 pmBUF-STL
6h 36m1 stop
$396United Airlines
Find Deal
sáb, mai 25 - sáb, jun 1
5:20 pm - 6:51 pmSTL-BUF
24h 31m2 stops
7:00 am - 12:22 pmBUF-STL
6h 22m1 stop
$400United Airlines
Find Deal
seg, ago 26 - dom, set 1
6:30 pm - 11:59 pmSTL-BUF
4h 29m1 stop
6:12 pm - 9:34 pmBUF-STL
4h 22m1 stop
$470Delta
Find Deal
ter, mai 14 - qua, mai 15
3:07 pm - 11:08 amSTL-BUF
19h 01m2 stops
1:53 pm - 12:05 pmBUF-STL
23h 12m3 stops
qua, jul 24 - seg, jul 29
12:15 pm - 11:08 amSTL-BUF
21h 53m3 stops
1:53 pm - 12:05 pmBUF-STL
23h 12m3 stops
qua, jul 24 - seg, jul 29

Flights from St. Louis to Buffalo - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Buffalo to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Buffalo?

The average price of all flights from St. Louis to Buffalo clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Buffalo on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from St. Louis to Buffalo. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from St. Louis to Buffalo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Buffalo, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Buffalo is September, where tickets cost $314 on average. On the other hand, the most expensive months are November and February, where the average cost of tickets is $495 and $480 respectively.

How far in advance should I book a flight from St. Louis to Buffalo?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Buffalo, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Buffalo, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 73 days before departure.

Which airlines provide the cheapest flights from St. Louis to Buffalo?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Buffalo from St. Louis were found on Frontier ($119) and American Airlines ($122), and the lowest round-trip tickets were found on Frontier ($152) and American Airlines ($246).

Good to know

Low season

January

High season

August

Cheapest flight

$119
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from St. Louis to Buffalo

When to book flights from St. Louis to Buffalo

Are your dates flexible? Find out the best times to travel from St. Louis to Buffalo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Buffalo

  • What is the cheapest flight from St. Louis to Buffalo?

    In the last 3 days, the lowest price for a flight from St. Louis to Buffalo was $119 for a one-way ticket and $152 for a round-trip.

  • Do I need a passport to fly between St. Louis and Buffalo?

    A passport is not required to fly from St. Louis to Buffalo.

  • Which airports will I be using when flying from St. Louis to Buffalo?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Buffalo, also known as Buffalo.

  • Which aircraft models fly most regularly from St. Louis to Buffalo?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Buffalo?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Buffalo, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Buffalo, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Buffalo are Delta and American Airlines. With an average price for the route of $377 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $375 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from St. Louis to Buffalo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Buffalo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Buffalo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Buffalo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buffalo with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BUF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Buffalo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buffalo from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from St. Louis to Buffalo

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Buffalo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Buffalo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10838 reviews
8.0Entertainment
8.6Crew
7.9Comfort
8.2Boarding
7.4Food
Airline reviews

It was a crowded flight. They did the best they could.

6.0 GoodNetty, Apr 2024SYR - JFK
Read more about Delta reviews

It was a crowded flight. They did the best they could.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

The main person that was coordinating everything was a short white/light skin Spanish man and he was very rude. It honestly made me feel like it was everyone’s First day at work. His announcements were very not reasonable and they did not make sense. The stewardess on the flight that made the announcements she didn’t even know what she was talking about she sounded inebriated. There were no snacks or drinks on our flight there wasn’t even much turbulence. This flight was not enjoyable nor was it what a Delta flight should be and just this past week I flew with Delta 3 times.

Horrible. First delta flight was delayed. I ran to my connecting flight and arrived to the gate 13 mins before departure. I told the gate agent “I’m here”, she told me flight was closed while giving my already confirmed seat to an stand by passenger. I said again “madam, I’m here with my confirmed seat” and she said “no you’re not here@ and gave two stand by people a boarding pass and let them board. I asked “madam, why do you do that?”, and she repeated “you’re not here”. That was very rude. I’m disappointed of delta. It used to have a good customer service. Things have changed, but not for good.

full flihgt but crew and passengers all helped eachother we landed early! however we then had to wait 40 minutes on the tarmac to get into the gate there were people trying get connecting flights, assume its an airport issue but still frustrating

We flew early evening on New Year's Eve. Our plane was less than half full... Great for the passenger experience -- not so much for the airline lol. Comfortable, spacious, smooth flight -- and early arrival!

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

The crew was horrible. Cleo was the most unwelcoming flight attendant I’ve ever had.

Do not get fooled by the term “Delta One” flat bed! The seats were super narrow. The ottoman for the feet was so narrow that when you recline the seat in flat bed position, you can only fit one foot in the 8” width space. There was only 1 flight attendant for First Class. The breakfast took 2 hours to get served. Instead of offering French Toast, the served bread pudding. The champagne with orange juice or Mimosa tasted terrible. Almost all the movies offered were ridiculously old. For a long flight from San Francisco to NY, it was frustrating! I DO NOT RECOMMEND this flight!!!

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

Not being able to purchase my check in baggage online was a negative.

Comfort of seats, ease of boarding. Food selection could be better

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Horrible people at the gate, they force me to check in my carry on, even thought no one behind me has to do it. I had to get out of the airport in NY to get my bag and go thru security again on my way to Honk Kong. The worst part is the employee threatened me with loosing the flights if don’t comply.

Cut off carry ons, had to check, got on and there was plenty of bin space. Disappointing.

One of the worst flights I have ever taken Delayed over an hour without communication from the crew; very scary Entertainment not working Crew NASTY cabin cold

May never fly American again Delay in take off WITHOUT EXPLANATION Cabin freezing Crew NASTY entertainment did not work entire flight

The flight was so short that the lack of leg room didn't bother me for long. The plane was smaller so only two seats per row and there were chargers. However, they didn't serve any snacks.

We liked quick boarding and on time departure. Seats were very uncomfortable.

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Book cheap flights from St. Louis to Buffalo

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Buffalo found on KAYAK in the last 72 hours.
8/13ter
1 stopFrontier
18h 14mSTL-BUF
$119
6/26qua
1 stopAmerican Airlines
5h 45mSTL-BUF
$122
7/11qui
1 stopFrontier
24h 53mSTL-BUF
$128
6/26qua
3 stops
21h 42mSTL-BUF
$214
6/26qua
2 stops
20h 02mSTL-BUF
$233
8/13ter
2 stopsAmerican Airlines
9h 27mSTL-BUF
$287
7/11qui
2 stopsAmerican Airlines
10h 36mSTL-BUF
$298
8/14qua
3 stops
22h 19mSTL-BUF
$424

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St. Louis - Buffalo Flights

Departure:

St. Louis (STL)United States

Destination:

Buffalo (BUF)United States

Return flight deals:

Buffalo - St. Louis

Cabin classes: