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BUF - STL

Find cheap flights from Buffalo to St. Louis from $86

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
Sun 6/9
Sun 6/16

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 43,156,178 times on KAYAK, and here is why:

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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
6:15 pm - 9:29 amBUF-STL
16h 14m1 stop
7:44 pm - 8:17 pmSTL-BUF
23h 33m1 stop
$163Frontier
Find Deal
Fri, Jun 7 - Fri, Jun 14
6:52 pm - 2:32 pmBUF-STL
20h 40m1 stop
10:36 pm - 9:26 amSTL-BUF
9h 50m1 stop
$169Frontier
Find Deal
Wed, Jun 5 - Wed, Jun 12
8:57 pm - 8:20 pmBUF-STL
24h 23m1 stop
8:00 pm - 5:46 pmSTL-BUF
20h 46m1 stop
$237Frontier
Find Deal
Tue, Jul 16 - Fri, Jul 19
6:46 pm - 2:53 pmBUF-STL
21h 07m1 stop
3:53 pm - 4:20 pmSTL-BUF
23h 27m1 stop
$238Frontier
Find Deal
Wed, Jul 24 - Sun, Jul 28
5:51 pm - 9:47 pmBUF-STL
4h 56m1 stop
5:31 pm - 11:59 pmSTL-BUF
5h 28m1 stop
$386United Airlines
Find Deal
Sat, May 25 - Mon, May 27
10:05 am - 3:41 pmBUF-STL
6h 36m1 stop
5:31 pm - 9:41 amSTL-BUF
15h 10m2 stops
$515United Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 12
6:10 pm - 8:39 amBUF-STL
15h 29m1 stop
7:03 am - 5:40 pmSTL-BUF
9h 37m2 stops
$554American Airlines
Find Deal
Tue, Jul 16 - Fri, Jul 19
10:40 am - 7:30 pmBUF-STL
9h 50m2 stops
4:52 pm - 10:41 pmSTL-BUF
4h 49m1 stop
$575American Airlines
Find Deal
Wed, Jul 24 - Sun, Jul 28
12:04 pm - 9:36 pmBUF-STL
10h 32m2 stops
12:51 pm - 11:03 pmSTL-BUF
9h 12m2 stops
$1,235Delta
Find Deal
Mon, Jul 15 - Sat, Jul 20
6:30 am - 1:08 pmBUF-STL
7h 38m2 stops
6:30 am - 6:19 pmSTL-BUF
10h 49m2 stops
$1,397Delta
Find Deal
Wed, Jun 5 - Wed, Jun 12

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 November and August, where the average cost of tickets is $413 and $408 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 ($163) and United Airlines ($386). Frontier proposed the cheapest one-way flight at $86.

Good to know

Low season

January

High season

September

Cheapest flight

$86
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 9% 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 $86 for a one-way ticket and $163 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 SkyTeam 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 10768 reviews
8.6Crew
8.0Entertainment
8.2Boarding
7.9Comfort
7.4Food
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.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

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

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.

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

I checked a bag because it was $5 less than carry on. They managed to lose my bag on a 2.5 hr direct flight! Frontier has no airport staff at baggage claim to help. As soon as I got home around 11 pm I tried to use their online system to file the claim for lost bag - system wouldn't take the # on my baggage claim ticket - said it was not the correct number. Also said that I had not checked a bag, which wasn't true - even my online boarding pass showed that I had checked a bag. Wasted about an hour on that process with no luck. Tried again in the morning - same thing. So tried online chat with Frontier bot - waited 35-40" twice to be connected to a baggage agent and it never happened. Eventually drove to PDX after work and waited 2 hrs for the Frontier ticket agents to arrive prior to the next Frontier flight out of PDX and FINALLY got some help from one of them, to take me to lost luggage area where I was able to retrive my bag. Probably took 4-5 hrs. of my time and endless frustration to get my bag. This was my first -- and LAST -- experience flying Frontier Airlines. Check-in was also extremely difficult and time consuming. The flight itself (and staff) were fine but everything else about the experience was a total disaster! The fact that Frontier literally has NO WAY to connect to a human voice for customer service (in this case for lost luggage) is the WORST!!!!!

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

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.

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
28h 25mBUF-STL
$86
7/15Mon
1 stopFrontier
19h 34mBUF-STL
$128
5/25Sat
1 stopFrontier
28h 30mBUF-STL
$179
7/15Mon
3 stops
22h 59mBUF-STL
$231
5/25Sat
2 stopsAmerican Airlines
9h 37mBUF-STL
$288
7/15Mon
2 stopsUnited Airlines
17h 20mBUF-STL
$296
5/18Sat
2 stopsUnited Airlines
15h 09mBUF-STL
$378

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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.
5/14Tue
multi-stopAmerican Airlines
5h 50mBUF-STL
5/15Wed
multi-stopAmerican Airlines
7h 12mSTL-BUF
$467
5/11Sat
multi-stopDelta
4h 56mBUF-STL
5/15Wed
multi-stopDelta
7h 15mSTL-BUF
$470
5/11Sat
multi-stopUnited Airlines
5h 49mBUF-STL
5/15Wed
multi-stopUnited Airlines
11h 13mSTL-BUF
$545

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Buffalo - St. Louis Flights

Departure:

Buffalo (undefined)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Buffalo

Cabin classes: