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Cheap flights from Buffalo to Chicago from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Chicago departing on 10/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Frontier Logo
7:11 pm - 7:44 pmBUF-ORD
25h 33m1 stop
Frontier Logo
8:49 pm - 6:14 pmORD-BUF
20h 25m1 stop
$167Frontier
Find Deal
Sat, Sep 27 - Fri, Oct 3
Frontier Logo
5:24 pm - 12:59 amBUF-ORD
8h 35m1 stop
Frontier Logo
8:30 am - 5:57 pmORD-BUF
8h 27m1 stop
$168Frontier
Find Deal
Fri, Oct 10 - Sat, Oct 11
Frontier Logo
5:24 pm - 12:59 amBUF-ORD
8h 35m1 stop
Frontier Logo
5:05 am - 11:19 amORD-BUF
5h 14m1 stop
$175Frontier
Find Deal
Fri, Oct 17 - Sun, Oct 19
JetBlue Logo
6:00 am - 12:22 pmBUF-ORD
7h 22m1 stop
JetBlue Logo
10:08 am - 5:51 pmORD-BUF
6h 43m1 stop
$199JetBlue
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Tue, Oct 14 - Tue, Oct 21
JetBlue Logo
6:00 am - 10:35 amBUF-ORD
5h 35m1 stop
JetBlue Logo
6:44 am - 3:39 pmORD-BUF
7h 55m1 stop
$202JetBlue
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Tue, Nov 4 - Fri, Nov 7
Multiple Airlines Logo
9:45 am - 4:13 pmBUF-ORD
7h 28m1 stop
Multiple Airlines Logo
10:18 am - 4:11 pmORD-BUF
28h 53m1 stop
$246Multiple Airlines
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Thu, Dec 4 - Sun, Dec 7
American Airlines Logo
11:26 am - 7:22 pmBUF-ORD
8h 56m1 stop
American Airlines Logo
1:15 pm - 10:53 pmORD-BUF
8h 38m1 stop
$248American Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Multiple Airlines Logo
9:53 pm - 4:23 pmBUF-ORD
19h 30m1 stop
Multiple Airlines Logo
1:50 pm - 9:08 pmORD-BUF
6h 18m1 stop
$254Multiple Airlines
Find Deal
Mon, Nov 3 - Fri, Nov 7
American Airlines Logo
4:00 pm - 5:00 pmBUF-ORD
2h 00mnonstop
American Airlines Logo
8:05 am - 2:24 pmORD-BUF
5h 19m1 stop
$260American Airlines
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Tue, Jan 20 - Tue, Feb 10
Delta Logo
11:15 am - 5:37 pmBUF-ORD
7h 22m1 stop
Delta Logo
10:35 am - 5:07 pmORD-BUF
5h 32m1 stop
$269Delta
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Tue, Jan 20 - Tue, Feb 10

American Airlines flights from Buffalo to Chicago O'Hare Intl Airport

Our best American Airlines deals on Buffalo to Chicago O'Hare Intl Airport flight tickets
American Airlines
Nov 4
BUF11:26 amBuffalo
8h 56m
1 stop
ORD7:22 pmChicago O'Hare Intl
Nov 7
ORD1:15 pmChicago O'Hare Intl
8h 38m
1 stop
BUF10:53 pmBuffalo
$248
Find similar
American Airlines
Jan 20
BUF4:00 pmBuffalo
2h 00m
ORD5:00 pmChicago O'Hare Intl
Feb 10
ORD8:05 amChicago O'Hare Intl
5h 19m
1 stop
BUF2:24 pmBuffalo
$260
Find similar
American Airlines
Oct 14
BUF6:07 amBuffalo
8h 45m
1 stop
ORD1:52 pmChicago O'Hare Intl
Oct 21
ORD2:15 pmChicago O'Hare Intl
1h 42m
BUF4:57 pmBuffalo
$266
Find similar

Frontier flights from Buffalo to Chicago O'Hare Intl Airport

Our best Frontier deals on Buffalo to Chicago O'Hare Intl Airport flight tickets
Frontier
Sep 26
BUF6:59 pmBuffalo
21h 18m
1 stop
ORD3:17 pmChicago O'Hare Intl
Sep 28
ORD8:49 pmChicago O'Hare Intl
20h 25m
1 stop
BUF6:14 pmBuffalo
$167
Find similar
Frontier
Oct 10
BUF5:24 pmBuffalo
8h 35m
1 stop
ORD12:59 amChicago O'Hare Intl
Oct 11
ORD8:30 amChicago O'Hare Intl
8h 27m
1 stop
BUF5:57 pmBuffalo
$168
Find similar
Frontier
Sep 26
BUF4:57 pmBuffalo
8h 02m
1 stop
ORD11:59 pmChicago O'Hare Intl
Sep 28
ORD6:00 amChicago O'Hare Intl
9h 02m
1 stop
BUF4:02 pmBuffalo
$175
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 9/27

7:11 pm-7:44 pm

1 stop25h 33m

Chicago O'Hare Intl

Fri 10/3

8:49 pm-6:14 pm

1 stop20h 25m

$167

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/10

5:24 pm-12:59 am

1 stop8h 35m

Chicago O'Hare Intl

Sat 10/11

8:30 am-5:57 pm

1 stop8h 27m

$168

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/17

5:24 pm-12:59 am

1 stop8h 35m

Chicago O'Hare Intl

Sun 10/19

5:05 am-11:19 am

1 stop5h 14m

$175

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 10/14

6:00 am-12:22 pm

1 stop7h 22m

Chicago O'Hare Intl

Tue 10/21

10:08 am-5:51 pm

1 stop6h 43m

$199

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 11/4

6:00 am-10:35 am

1 stop5h 35m

Chicago O'Hare Intl

Fri 11/7

6:44 am-3:39 pm

1 stop7h 55m

$202

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 12/4

9:45 am-4:13 pm

1 stop7h 28m

Chicago O'Hare Intl

Sun 12/7

10:18 am-4:11 pm

1 stop28h 53m

$246

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 11/4

11:26 am-7:22 pm

1 stop8h 56m

Chicago O'Hare Intl

Fri 11/7

1:15 pm-10:53 pm

1 stop8h 38m

$248

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 11/3

9:53 pm-4:23 pm

1 stop19h 30m

Chicago O'Hare Intl

Fri 11/7

1:50 pm-9:08 pm

1 stop6h 18m

$254

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

4:00 pm-5:00 pm

Nonstop2h 00m

Chicago O'Hare Intl

Tue 2/10

8:05 am-2:24 pm

1 stop5h 19m

$260

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

11:15 am-5:37 pm

1 stop7h 22m

Chicago O'Hare Intl

Tue 2/10

10:35 am-5:07 pm

1 stop5h 32m

$269

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Buffalo to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Buffalo averaging around $292.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as $444. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Buffalo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $554.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Buffalo in the morning is the least expensive time of day to depart. momondo users have found prices as low as $468 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around $666. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Buffalo to Chicago O'Hare Intl flight route?

Fly from Buffalo to Chicago O'Hare Intl for the best Buffalo - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Buffalo for as low as $190 on momondo.

What cabin class options are available on Buffalo to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Buffalo to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Buffalo to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Buffalo to Chicago O'Hare Intl Airport.

How have Buffalo to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for Buffalo to Chicago O'Hare Intl Airport flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from Buffalo to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Buffalo to Chicago O'Hare Intl Airport (BUF to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Chicago O'Hare Intl Airport

Best Price Found

$173

Fastest flight time

1h 48m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Buffalo in the past 72 hours is $173. The best round-trip flight deal from Buffalo to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $308.
The fastest flight from Buffalo to Chicago O'Hare Intl Airport takes 1h 48m
Direct flights go from Buffalo to Chicago O'Hare Intl Airport every day.
Search flight deals

  • How far is Buffalo to Chicago O'Hare Intl by plane?

    The straight-line distance from Buffalo to Chicago O'Hare Intl is 464.0 mi. In terms of flight time, this usually takes a little over 1h 59m.

  • When did momondo last update prices for flights from Buffalo Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Buffalo Airport to Chicago O'Hare Intl Airport are updated daily.

  • How many operators does momondo search for flights from Buffalo Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Buffalo Airport to Chicago O'Hare Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Buffalo to Chicago O'Hare Intl Airport?

  • What is the most popular airline from Buffalo to Chicago O'Hare Intl Airport?

Best airlines flying from Buffalo to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Buffalo to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $58Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
United AirlinesPriceFrom $157Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $161Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • United Airlines Flights From Buffalo to Chicago O'Hare Intl Airport

    Across 28 United Airlines flights from Buffalo to Chicago O'Hare Intl Airport this week, the average price was $371, with the best United Airlines deals starting from $157 round-trip. 8,926 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • American Airlines Flights From Buffalo to Chicago O'Hare Intl Airport

    American Airlines is also a popular choice for this route. American Airlines flight deals for Buffalo to Chicago O'Hare Intl Airport start from as low as $161 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $327. American Airlines operates 17 flights to Chicago O'Hare Intl Airport from Buffalo in an average week. Users have rated it 7.2/10 across 10,000 reviews.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Rockford
Schaumburg
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Racine
Hammond
Orland Park
Tinley Park
Elgin
Aurora
Janesville
Benton Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to Chicago?

Finding the right flight to Chicago from Buffalo is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

Can I find flights from Buffalo to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Buffalo to Chicago flights to just show those with flexible booking policies.

How can momondo help me find flights from Buffalo to Chicago?

momondo provides multiple filters to help you find the best flight to Chicago from Buffalo. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Buffalo to Chicago right now. Can momondo alert me if prices change?

Price alerts on flights to Chicago from Buffalo are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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