BUF - STL

$93 Find Cheap Flights from Buffalo to St. Louis

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 7/16. 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
1 adult, Economy, 0 bags

KAYAK searches 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
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Everything you should know

Cheapest round-trip
$187
Typical prices: $328-$583
Frontier
Thu 7/23Sat 7/25
BUF - STL • 1 stop
Cheapest one-way
$93
Typical prices: $168-$203
Frontier
Thu 7/16
BUF - STL • 1 stop
Top airlines
Cheapest • from $187 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Buffalo and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $330 (round-trip)
Shortest trip • 4h 11m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to St. Louis

Thu, Jul 23 - Sat, Jul 25
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$187Frontier
Tue, Aug 4 - Thu, Aug 13
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
Frontier Logo
6:34 pm - 1:53 pm
STL
-
BUF
18h 19m
1 stop
$189Frontier
Thu, Aug 6 - Wed, Aug 12
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$190Frontier
Tue, Jul 28 - Sat, Aug 8
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$191Frontier
Fri, Sep 4 - Mon, Sep 7
Frontier Logo
11:36 am - 5:22 pm
BUF
-
STL
6h 46m
1 stop
Frontier Logo
6:17 pm - 10:29 am
STL
-
BUF
15h 12m
1 stop
$194Frontier
Tue, Sep 15 - Sat, Sep 26
Frontier Logo
1:16 pm - 9:40 am
BUF
-
STL
21h 24m
1 stop
Frontier Logo
10:35 am - 12:21 pm
STL
-
BUF
24h 46m
1 stop
$198Frontier
Thu, Jul 30 - Mon, Aug 3
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$211Frontier
Fri, Aug 7 - Thu, Aug 13
Frontier Logo
2:48 pm - 8:57 am
BUF
-
STL
19h 09m
1 stop
Frontier Logo
6:34 pm - 1:53 pm
STL
-
BUF
18h 19m
1 stop
$212Frontier
Sat, Aug 15 - Mon, Aug 17
Frontier Logo
12:28 pm - 11:59 pm
BUF
-
STL
12h 31m
2 stops
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$246Frontier
Sat, Aug 15 - Mon, Aug 17
Frontier Logo
12:28 pm - 11:59 pm
BUF
-
STL
12h 31m
2 stops
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
$247Frontier
Booking Insights

KAYAK's insights & trends for Buffalo to St. Louis flights

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.

How much is a round-trip flight from Buffalo to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Buffalo to St. Louis departing in July.

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 round-trip 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 January, where tickets cost $321 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $676 and $641 respectively.

Good to know

Low seasonJanuary
Cheapest flight$93
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 14% 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 5 days, the lowest price for a flight from Buffalo to St. Louis was $93 for a one-way ticket and $187 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, and SkyTeam are the airline alliances operating flights between Buffalo and St. Louis, with oneworld being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Buffalo to St. Louis are Southwest and Delta. With an average price for the route of $411 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $368 and an overall rating of 7.8.

  • 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.

Reviews of the top 3 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.
7.9
SouthwestOverall score based on 4243 reviews
8.1Boarding
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
Airline reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

2.0 MediocreStuart, Mar 2026
HOU - STL
Read more Southwest reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

Everything went smoothly and we even arrived a little bit early.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Southwest's seats are the least comfortable I have ever sat in.

For my birthday trip this was my second time ever flying, this trip was the best.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Everything was great except the food. The pretzels are really crappy.

I had a front row middle. I am not a big person and I barely fit in between that seat! No place to put my arms, even though the guys on each side were not taking over the arm rests. It felt like a frontier flight (if that tells you everything )

Overall is was a pretty good flight. However we were 15 mins late taking off and no one told us anything. We were all in our seats just sitting there for 15mins and all the sudden the pilot stayed we are leaving now. I think they should have at least said something after our take off time passed. Everyone was wondering what was going on. I will say the pilot did increase the speed of the plane so we arrived in time. So we weren't late.

FA was a bit strange and dodgy not very characteristic of Delta

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

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

There was no FREE wi-fi nor entertainment screens at all.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

Crew handling the boarding at the gates are quite aggressive with the passengers and must be given training/ refreshing courses to improve customer experience.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

American Airlines “Randy” questioned why I needed preboarding and denied my request for same. Then Randy attempted to berate me when I boarded with my group. I was seated in an exit roll with a young man with a disability that exhibited difficulty controlling and settling himself. But Tandy questioned my disability. The flight was horrible. It was overpacked.

Everything you need to know for your flight from Buffalo to St. Louis

Information on your arrival and departure airports