$148 Cheap Flights from Louisville (SDF) to Buffalo (BUF)

View $148 flight on Wed, May 13, 2026Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Buffalo Niagara Intl. Airport (BUF)

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Cheap Flights from Louisville to Buffalo (SDF-BUF)

Prices were available within the past 7 days and start at $148 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $275 found 3 days ago
Delta
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $275 found 3 days ago
Southwest Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $275 found 3 days ago
American Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$279 Roundtrip, found 3 days ago
$279
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $279 found 3 days ago
Southwest Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$280 Roundtrip, found 3 days ago
$280
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $280 found 3 days ago
American Airlines
Wed, Apr 29 - Tue, May 5
SDF
Louisville
BUF
Buffalo
$285 Roundtrip, found 2 days ago
$285
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Apr 29 from Louisville to Buffalo, returning Tue, May 5, priced at $285 found 2 days ago
Southwest Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$286 Roundtrip, found 3 days ago
$286
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $286 found 3 days ago
United
Wed, Apr 29 - Tue, May 5
SDF
Louisville
BUF
Buffalo
$295 Roundtrip, found 2 days ago
$295
Roundtrip
found 2 days ago
Select United flight, departing Wed, Apr 29 from Louisville to Buffalo, returning Tue, May 5, priced at $295 found 2 days ago
United
Wed, Apr 29 - Tue, May 5
SDF
Louisville
BUF
Buffalo
$300 Roundtrip, found 2 days ago
$300
Roundtrip
found 2 days ago
Select United flight, departing Wed, Apr 29 from Louisville to Buffalo, returning Tue, May 5, priced at $300 found 2 days ago
American Airlines
Sat, Apr 18 - Wed, Apr 22
SDF
Louisville
BUF
Buffalo
$305 Roundtrip, found 3 days ago
$305
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Apr 18 from Louisville to Buffalo, returning Wed, Apr 22, priced at $305 found 3 days ago

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From $176 - $504 per traveler.

Frequently asked questions

How much does a flight from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) cost?
You can find cheap one-way flights from $148 and cheap return flights from $275 Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) with Expedia. One-way flights usually range from $131 to $542, and return flights typically cost between $316 and $974. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
November is the cheapest month to fly from Louisville, KY (SDF) to Buffalo, NY (BUF), with average round-trip fares around $296. This is about 26% lower than the average price throughout the year, as travel demand typically decreases after the summer. Other budget-friendly months include May and July.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Enter SDF to BUF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Southwest Airlines is one of the cheapest airlines offering connecting flights from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) with a layover in Chicago (MDW) starting from around $521. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
To find a cheap flight from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
For flights from Louisville, KY (SDF) to Buffalo, NY (BUF), November and May are the best months to travel. November offers an average price of around $296, making it a budget-friendly option as the holiday season approaches. May is also popular, providing a pleasant spring experience with moderate prices.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The earliest flight from Louisville International Airport (SDF) to Buffalo Niagara International Airport (BUF) typically leaves at around 5:00 AM, operated by American Airlines. Catching this early flight can give you a head start on your day in Buffalo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
When flying from Louisville, KY (SDF) to Buffalo, NY (BUF), the most popular departure times are from 6am to 9am. This accounts for around 37% of total traffic. Airlines such as American Airlines, Delta Air Lines, and United Airlines operate flights during this window. Many travelers prefer this timing as it allows them to start their day early and maximize their time at their destination.
How long does it take to fly from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Flights from SDF to BUF with one stop typically take around 4 hours 20 minutes, covering approximately 493 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
You can fly first class between SDF and BUF. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight with Expedia?
It's easy to earn miles on a Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Buffalo from Louisville Intl. (SDF)?
From Louisville Intl. (SDF), you can fly into Buffalo Niagara Intl. (BUF) to reach Buffalo. Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), Midway Intl. (MDW) before reaching Buffalo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) at the last minute?
Typically, booking a last minute flight from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight and hotel package?
Securing a Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) Buffalo Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
If you booked your Louisville, KY (SDF-Louisville Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Louisville Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$274
Distance
492 mi

Book with confidence

Louisville to Buffalo Flights

The cheapest times to fly from Louisville to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Louisville to Buffalo are during the month of April. You can find some of the cheapest flights from Louisville to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Buffalo

Sunday is one of the best days to book for cheap flights from Louisville to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Louisville to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Louisville to Buffalo in 2026. You can also book with separate airlines for your outbound and return journeys, from $148 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Louisville to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Louisville to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Louisville to Buffalo Flights

*Flight schedules are subject to change.

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*Available to One Key members.