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BUF - STL

Find cheap flights from Buffalo to St. Louis from $85

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to St. Louis departing on 5/18. 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
Wed 6/5
Wed 6/12

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to St. Louis, 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 Buffalo to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 42,573,820 times on KAYAK, and here is why:

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

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to St. Louis 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
9:07 pm - 7:07 amBUF-STL
11h 00m1 stop
3:37 pm - 4:50 pmSTL-BUF
24h 13m1 stop
$203Frontier
Find Deal
Sat, Jun 8 - Sun, Jun 9
6:15 pm - 9:29 amBUF-STL
16h 14m1 stop
3:37 pm - 4:50 pmSTL-BUF
24h 13m1 stop
$225Frontier
Find Deal
Fri, Jun 7 - Sun, Jun 9
7:55 pm - 7:07 amBUF-STL
12h 12m1 stop
3:32 pm - 5:25 pmSTL-BUF
24h 53m1 stop
$238Frontier
Find Deal
Thu, Jun 13 - Thu, Jun 20
7:05 pm - 11:23 pmBUF-STL
5h 18m1 stop
9:00 am - 4:40 pmSTL-BUF
6h 40m1 stop
$244American Airlines
Find Deal
Tue, Aug 20 - Sat, Aug 24
8:57 pm - 8:20 pmBUF-STL
24h 23m1 stop
6:42 pm - 8:19 pmSTL-BUF
24h 37m1 stop
$252Frontier
Find Deal
Tue, Jul 9 - Fri, Jul 19
7:48 pm - 12:22 pmBUF-STL
17h 34m2 stops
5:32 pm - 11:17 pmSTL-BUF
4h 45m1 stop
$420United Airlines
Find Deal
Tue, Aug 20 - Sat, Aug 24
6:00 am - 9:53 amBUF-STL
4h 53m1 stop
8:07 am - 3:39 pmSTL-BUF
6h 32m1 stop
$434American Airlines
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Thu, May 16 - Mon, May 20
7:48 pm - 12:22 pmBUF-STL
17h 34m2 stops
9:30 am - 11:32 pmSTL-BUF
13h 02m2 stops
$504United Airlines
Find Deal
Tue, Aug 20 - Sat, Aug 24
10:15 am - 8:37 pmBUF-STL
11h 22m2 stops
11:25 am - 4:59 pmSTL-BUF
4h 34m1 stop
$740Delta
Find Deal
Thu, Jun 13 - Thu, Jun 20
6:15 am - 2:33 pmBUF-STL
9h 18m2 stops
3:23 pm - 12:03 amSTL-BUF
7h 40m2 stops
$1,384Delta
Find Deal
Fri, Jun 7 - Sun, Jun 9

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

Get data-powered insights and trends into flights from Buffalo to St. Louis 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 Buffalo to St. Louis?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Buffalo to St. Louis, 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 Buffalo to St. Louis is October, where tickets cost $301 on average. On the other hand, the most expensive months are July and November, where the average cost of tickets is $428 and $413 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Buffalo to St. Louis, 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 Buffalo to St. Louis, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 54 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Buffalo to St. Louis were found on Frontier ($203) and American Airlines ($244). Frontier proposed the cheapest one-way flight at $85.

Good to know

Low season

January

High season

September

Cheapest flight

$85
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Buffalo to St. Louis

When to book flights from Buffalo to St. Louis

Are your dates flexible? Find out the best times to travel from Buffalo to St. Louis 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 Buffalo to St. Louis

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

    In the last 3 days, the lowest price for a flight from Buffalo to St. Louis was $85 for a one-way ticket and $203 for a round-trip.

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

    No, a passport isn't needed to fly from Buffalo to St. Louis. However, local authorities might ask for an official ID.

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

    Buffalo airport is called Buffalo and the only airport in St. Louis is Lambert-St Louis.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Buffalo to St. Louis are Delta and United Airlines. With an average price for the route of $364 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $414 and an overall rating of 7.4.

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

    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 Buffalo to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Buffalo 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 Buffalo to St. Louis?

    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 St. Louis with an airline and back to Buffalo with another airline. Booking your flights between Buffalo and STL 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 Buffalo to St. Louis?

    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 St. Louis from Buffalo 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 Buffalo to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to St. Louis. 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 Buffalo to St. Louis? 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 10818 reviews
8.2Boarding
8.0Entertainment
7.9Comfort
7.4Food
8.6Crew
Airline reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

6.0 GoodDan, Apr 2024LGA - DEN
Read more about Delta reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Seat back monitors and outlets were dead and not working.

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

Service was good for such a short flight. Small plane but smooth flight.

The flight was delayed but we got to our final destination.

On 2 different flights the wifi was horrible and there was no drink or snack service.

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

We just spent $6000 on our first trip since pre COVID and we were stranded on the runway of our departing airport for 2 hours and 15 minutes while our layover was only an hour and a half. We were told by the pilot we were next for de-icing and then got bumped by 3 other planes. Pilot went on to say they only had one guy working the de-icing where they usually have at least 2. In Rochester. In the heart of winter. Someone missed a step and should be fired. I'm not done.

Everything went well with the flight. But one of the flight attendants had on inappropriate pants. She had on an old worn out pair of sweat pants. The back seam was unrivaled and should not have been worn for work. If I had not seen her in the airport with the standard type of luggage, I certainly would not have thought she was working for Delta. Not a good look at all for representation.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

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

WiFi connected but only let you go to the AA website, not even text messaging worked.

The flight was excellent, provided that we had inclement weather. We departed earlier than scheduled and arrived early. There was a little turbulence, but nothing to be worried about.

pleased with overall experienced, but seats in coach are tight.

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

Don't often sit in 1st class. Our experience was great.

The 2 hour delay was frustrating but our crew did a great job getting us out quickly and keeping communication especially with the people who had connecting flights

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

It was right on time and crew were very courteous

Their computers were down upon arrival to the airport. They were unable to figure out how to board us. We were delayed over an hour and a half.

Our original flight was delayed and we almost missed our layover. Fortunately they delayed the second flight as well due to the number of people being on both flights so we got lucky. But it was due to mechanical issues which was frustrating.

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

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.

Book cheap flights from Buffalo to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Buffalo to St. Louis found on KAYAK in the last 72 hours.
5/18Sat
1 stopFrontier
16h 04mBUF-STL
$85
9/15Sun
1 stopFrontier
24h 01mBUF-STL
$89
7/27Sat
1 stopFrontier
10h 43mBUF-STL
$104
10/3Thu
1 stopFrontier
20h 17mBUF-STL
$129
10/3Thu
3 stops
25h 18mBUF-STL
$261
9/15Sun
2 stopsAmerican Airlines
7h 40mBUF-STL
$288
5/18Sat
2 stopsUnited Airlines
15h 09mBUF-STL
$394
7/27Sat
3 stopsLufthansa
26h 42mBUF-STL
$2,803

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Last minute flights from Buffalo to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Buffalo to St. Louis that are departing in the next 10 days.
5/8Wed
multi-stopFrontier
13h 55mBUF-STL
5/12Sun
multi-stopFrontier
25h 33mSTL-BUF
$368
5/8Wed
multi-stopFrontier
13h 55mBUF-STL
5/12Sun
multi-stopFrontier
25h 33mSTL-BUF
$388
5/10Fri
multi-stopFrontier
23h 39mBUF-STL
5/12Sun
multi-stopFrontier
25h 33mSTL-BUF
$421
5/9Thu
multi-stopFrontier
23h 27mBUF-STL
5/12Sun
multi-stopFrontier
25h 33mSTL-BUF
$438
5/7Tue
multi-stopAmerican Airlines
4h 53mBUF-STL
5/14Tue
multi-stopAmerican Airlines
7h 12mSTL-BUF
$467
5/7Tue
multi-stopAmerican Airlines
5h 50mBUF-STL
5/8Wed
multi-stopAmerican Airlines
7h 12mSTL-BUF
$468
5/9Thu
multi-stopUnited Airlines
10h 46mBUF-STL
5/12Sun
multi-stopUnited Airlines
5h 44mSTL-BUF
$764
5/7Tue
multi-stopUnited Airlines
8h 25mBUF-STL
5/14Tue
multi-stopUnited Airlines
7h 26mSTL-BUF
$989
5/9Thu
multi-stopDelta
7h 38mBUF-STL
5/12Sun
multi-stopDelta
6h 20mSTL-BUF
$1,480
5/8Wed
multi-stopDelta
8h 41mBUF-STL
5/12Sun
multi-stopDelta
6h 20mSTL-BUF
$1,609

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Buffalo - St. Louis Flights

Departure:

Buffalo (BUF)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Buffalo

Cabin classes: