$362 Cheap Flights from Veterans Airport of Southern Illinois (MWA) to Buffalo (BUF)

View $362 flight on Mon, Mar 23, 2026Opens in a new window

Popular airlines from Veterans Airport of Southern Illinois (MWA) to Buffalo Niagara Intl. Airport (BUF)

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Cheap Flights from Veterans Airport of Southern Illinois to Buffalo (MWA-BUF)

Prices were available within the past 7 days and start at $362 for one-way flights and $637 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$637 Roundtrip, found 5 days ago
$637
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $637 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$653 Roundtrip, found 5 days ago
$653
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $653 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$710 Roundtrip, found 5 days ago
$710
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $710 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$793 Roundtrip, found 5 days ago
$793
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $793 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$805 Roundtrip, found 5 days ago
$805
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $805 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$810 Roundtrip, found 5 days ago
$810
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $810 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$880 Roundtrip, found 5 days ago
$880
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $880 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$890 Roundtrip, found 5 days ago
$890
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $890 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$953 Roundtrip, found 5 days ago
$953
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $953 found 5 days ago
Contour Airlines
Mon, Mar 23 - Sun, Mar 29
MWA
Marion
BUF
Buffalo
$960 Roundtrip, found 5 days ago
$960
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Mon, Mar 23 from Marion to Buffalo, returning Sun, Mar 29, priced at $960 found 5 days ago

Frequently asked questions

How much does a flight from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.) cost?
You can find cheap one-way flights from $362 and cheap return flights from $637 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.) with Expedia. Return flights often range between $757 and $2766. 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 Marion, IL (MWA-Williamson County Regional) 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The cheapest month to fly from MWA to BUF is March when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Enter MWA to BUF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Contour Airlines is one of the cheapest airlines offering connecting flights from Williamson County Regional (MWA) to Buffalo Niagara Intl. (BUF), with round-trip tickets starting from around $757 with a layover in O'Hare Intl. (ORD). 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
To find a cheap flight from Marion, IL (MWA-Williamson County Regional) 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The earliest flight from Williamson County Regional Airport (MWA) to Buffalo Niagara International Airport (BUF) typically departs at around 2:00 PM, operated by Contour Airlines and American Airlines. This seasonal service is available in September, allowing for a convenient afternoon departure. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
You'll usually find the most flights from Williamson County Regional (MWA) to Buffalo Niagara Intl. (BUF) on a Monday, with around 1 flights available. This gives you plenty of options for your travel plans. A major airline on this route is Contour Airlines.
What are the most popular departure times for flights from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The most popular departure times for flights from Marion (MWA) to Buffalo (BUF) are in the early afternoon, from 12pm to 3pm. This accounts for 100% of the traffic, as all flights during this time are booked. Many major carriers, including United Airlines and American Airlines, operate flights during this window. This timing is ideal for travelers looking to maximize their day.
How long does it take to fly from Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
A flight from MWA to BUF with a layover takes around 8 hours 30 minutes, with the route covering approximately 649 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Select the "Business class" and "First class" filters when looking for MWA to BUF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight with Expedia?
It's easy to earn miles on a Marion, IL (MWA-Williamson County Regional) 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 Williamson County Regional (MWA)?
If you're planning to travel to Buffalo from Williamson County Regional (MWA), you can fly into Buffalo Niagara Intl. (BUF) Some flights may connect through major hubs like O'Hare Intl. (ORD) 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.) at the last minute?
Typically, booking a last minute flight from Marion, IL (MWA-Williamson County Regional) 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight and hotel package?
Securing a Marion, IL (MWA-Williamson County Regional) 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 Marion, IL (MWA-Williamson County Regional) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
If you booked your Marion, IL (MWA-Williamson County Regional) 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
Veterans Airport of Southern Illinois
Destination airport
Buffalo Niagara Intl.
Roundtrip price
$637
Distance
648 mi

Book with confidence

Veterans Airport of Southern Illinois to Buffalo Flights

The cheapest times to fly from Veterans Airport of Southern Illinois 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 Veterans Airport of Southern Illinois to Buffalo are during the month of March. You can find some of the cheapest flights from Veterans Airport of Southern Illinois to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Veterans Airport of Southern Illinois to Buffalo

Sunday is one of the best days to book for cheap flights from Veterans Airport of Southern Illinois 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 Veterans Airport of Southern Illinois 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 Veterans Airport of Southern Illinois to Buffalo in 2026. You can also book with separate airlines for your outbound and return journeys, from $362 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 Veterans Airport of Southern Illinois 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 Veterans Airport of Southern Illinois 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.

 

Veterans Airport of Southern Illinois to Buffalo Flights

*Flight schedules are subject to change.

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*Available to One Key members.