$39 Cheap Flights from Buffalo (BUF) to Chicago (ORD)

View $39 flight on Wed, Aug 13, 2025Opens in a new window
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Cheap Flights from Buffalo to Chicago (BUF-ORD)

Prices were available within the past 7 days and start at $39 for one-way flights and $77 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, May 20 - Wed, May 21
BUF
Buffalo
ORD
Chicago
$77 Roundtrip, found 3 hours ago
$77
Roundtrip
found 3 hours ago
Select United flight, departing Tue, May 20 from Buffalo to Chicago, returning Wed, May 21, priced at $77 found 3 hours ago
Southwest Airlines
Tue, May 20 - Wed, May 21
BUF
Buffalo
ORD
Chicago
$87 Roundtrip, found 3 hours ago
$87
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, May 20 from Buffalo to Chicago, returning Wed, May 21, priced at $87 found 3 hours ago
United
Wed, Jun 11 - Wed, Jun 18
BUF
Buffalo
ORD
Chicago
$89 Roundtrip, found 2 days ago
$89
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jun 11 from Buffalo to Chicago, returning Wed, Jun 18, priced at $89 found 2 days ago
American Airlines
Tue, May 20 - Wed, May 21
BUF
Buffalo
ORD
Chicago
$91 Roundtrip, found 3 hours ago
$91
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, May 20 from Buffalo to Chicago, returning Wed, May 21, priced at $91 found 3 hours ago
United
Wed, Jun 11 - Wed, Jun 18
BUF
Buffalo
ORD
Chicago
$93 Roundtrip, found 2 days ago
$93
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jun 11 from Buffalo to Chicago, returning Wed, Jun 18, priced at $93 found 2 days ago
United
Mon, Jun 9 - Wed, Jun 11
BUF
Buffalo
ORD
Chicago
$98 Roundtrip, found 2 days ago
$98
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 9 from Buffalo to Chicago, returning Wed, Jun 11, priced at $98 found 2 days ago
United
Mon, Jun 16 - Wed, Jun 18
BUF
Buffalo
ORD
Chicago
$99 Roundtrip, found 12 hours ago
$99
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Jun 16 from Buffalo to Chicago, returning Wed, Jun 18, priced at $99 found 12 hours ago
United
Wed, May 14 - Tue, May 20
BUF
Buffalo
ORD
Chicago
$99 Roundtrip, found 2 days ago
$99
Roundtrip
found 2 days ago
Select United flight, departing Wed, May 14 from Buffalo to Chicago, returning Tue, May 20, priced at $99 found 2 days ago
Delta
Mon, Jun 23 - Thu, Jun 26
BUF
Buffalo
ORD
Chicago
$127 Roundtrip, found 7 hours ago
$127
Roundtrip
found 7 hours ago
Select Delta flight, departing Mon, Jun 23 from Buffalo to Chicago, returning Thu, Jun 26, priced at $127 found 7 hours ago
Frontier Airlines
Fri, May 16 - Sat, May 17
BUF
Buffalo
ORD
Chicago
$170 Roundtrip, found 12 hours ago
$170
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Fri, May 16 from Buffalo to Chicago, returning Sat, May 17, priced at $170 found 12 hours ago
Flights from Buffalo (BUF) to Chicago (ORD)
Origin airport
Buffalo Niagara Intl.
Destination airport
O'Hare Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$77
Distance
471 mi

Buffalo to Chicago Flights

The cheapest times to fly from Buffalo to Chicago

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 Buffalo to Chicago are during the month of May. You can find some of the cheapest flights from Buffalo to Chicago with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Buffalo to Chicago

Sunday is one of the best days to book for cheap flights from Buffalo to Chicago: 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 Buffalo to Chicago

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 Buffalo to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $39 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 Buffalo to Chicago 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 Buffalo to Chicago 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.

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD) cost?
Grab cheap return fares starting from $187 from Buffalo Niagara Intl. Airport (BUF) to O’Hare Intl. Airport (ORD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving BUF on May 20 2025 and touching down at ORD. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from BUF to ORD?
The cheapest flights from BUF to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
Board a nonstop flight with United Airlines and travel straight from Buffalo Niagara Intl. Airport (BUF) to O’Hare Intl. Airport (ORD).
What is the cheapest airline that flies from BUF to ORD?
Fly from BUF to ORD with American Airlines. This airline currently offers the cheapest one-way fare on this route, starting at $125. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BUF on July 5 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
When jetting out of Buffalo Niagara Intl. Airport (BUF), you can take your pick from an average of 4 daily nonstop flights to O’Hare Intl. Airport (ORD).
What are the most popular departure times for flights from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
The 5 PM departures from BUF to ORD are the top choice for many travelers. These flights can come with a higher price due to their popularity. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from BUF to ORD?
Jet off on a Friday if you’re searching for the best selection of flights from Buffalo Niagara Intl. Airport (BUF) to O’Hare Intl. Airport (ORD).
What is the earliest flight from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
Take the earliest flight at around 7:00AM UTC-5, leaving from Buffalo Niagara Intl. Airport (BUF). You’ll be traveling for roughly 2h 3m, touching down at O’Hare Intl. Airport (ORD) at approximately 8:03AM UTC-6.
How long does it take to fly from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
It takes approximately 2 hours and 4 minutes to fly the 470 mi from BUF to ORD.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
To avoid potential delays on the Buffalo Niagara Intl. Airport (BUF) to O’Hare Intl. Airport (ORD) route, travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Chicago from Buffalo Niagara Intl. Airport (BUF)?
You can land at O’Hare Intl. Airport (ORD) or Midway Intl. Airport (MDW) when you travel to Chicago on a direct flight from Buffalo Niagara Intl. Airport (BUF).
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD) last-minute?
Waiting until just before your departure to book your flight from BUF to ORD generally means paying more. While it’s possible to find some last-minute deals, they’re not always guaranteed. Be flexible with your itinerary to boost your chances of landing a bargain.
Is it cheaper to book a BUF to ORD flight and hotel package?
Compared with arranging hotels and flights separately, booking a BUF to ORD flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD)?
If you reserved your BUF to ORD flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare 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.

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*Available to One Key members.