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Cheap flights from Buffalo to Chicago from $99

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 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Buffalo to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:54 pm - 11:08 pm
BUF
-
ORD
29h 14m
1 stop
Frontier Logo
7:44 pm - 6:09 pm
ORD
-
BUF
21h 25m
1 stop
$271Frontier
Fri, Aug 28 - Sun, Aug 30
JetBlue Logo
6:00 am - 10:06 am
BUF
-
ORD
5h 06m
1 stop
JetBlue Logo
5:27 pm - 12:13 am
ORD
-
BUF
5h 46m
1 stop
$272JetBlue
Wed, Jul 22 - Fri, Jul 24
Multiple Airlines Logo
6:00 am - 10:06 am
BUF
-
ORD
5h 06m
1 stop
Multiple Airlines Logo
7:05 am - 1:53 pm
ORD
-
BUF
5h 48m
1 stop
$273Multiple Airlines
Thu, Jul 23 - Mon, Jul 27
Frontier Logo
11:29 am - 7:53 pm
BUF
-
ORD
9h 24m
1 stop
Frontier Logo
8:58 pm - 10:29 am
ORD
-
BUF
36h 31m
2 stops
$274Frontier
Thu, Aug 6 - Fri, Aug 7
Frontier Logo
1:13 pm - 8:28 pm
BUF
-
ORD
8h 15m
1 stop
Frontier Logo
6:05 am - 6:01 pm
ORD
-
BUF
10h 56m
1 stop
$276Frontier
Fri, Oct 9 - Tue, Oct 13
Frontier Logo
11:29 am - 7:53 pm
BUF
-
ORD
9h 24m
1 stop
Frontier Logo
1:55 pm - 4:41 pm
ORD
-
BUF
1h 46mnonstop
$277Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
9:29 pm - 11:10 pm
BUF
-
ORD
26h 41m
1 stop
Frontier Logo
5:13 pm - 7:06 pm
ORD
-
BUF
24h 53m
1 stop
$280Frontier
Thu, Jul 30 - Mon, Aug 3
American Airlines Logo
6:50 pm - 8:00 pm
BUF
-
ORD
2h 10mnonstop
American Airlines Logo
3:14 pm - 6:02 pm
ORD
-
BUF
1h 48mnonstop
$284American Airlines
Thu, Oct 8 - Tue, Oct 13
American Airlines Logo
8:00 am - 9:05 am
BUF
-
ORD
2h 05mnonstop
American Airlines Logo
8:03 am - 10:53 am
ORD
-
BUF
1h 50mnonstop
$285American Airlines
Fri, Oct 9 - Tue, Oct 13
JetBlue Logo
4:00 pm - 9:52 pm
BUF
-
ORD
6h 52m
1 stop
JetBlue Logo
7:00 am - 3:04 pm
ORD
-
BUF
7h 04m
1 stop
$290JetBlue
Thu, Dec 3 - Sun, Dec 6

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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
Aug 28
BUF6:54 pmBuffalo
29h 14m
1 stop
ORD11:08 pmChicago O'Hare Intl
Aug 30
ORD7:44 pmChicago O'Hare Intl
21h 25m
1 stop
BUF6:09 pmBuffalo
$271
Frontier
Aug 6
BUF11:29 amBuffalo
9h 24m
1 stop
ORD7:53 pmChicago O'Hare Intl
Aug 7
ORD8:58 pmChicago O'Hare Intl
36h 31m
2 stops
BUF10:29 amBuffalo
$274
Frontier
Oct 9
BUF1:13 pmBuffalo
8h 15m
1 stop
ORD8:28 pmChicago O'Hare Intl
Oct 13
ORD6:05 amChicago O'Hare Intl
10h 56m
1 stop
BUF6:01 pmBuffalo
$276

JetBlue flights from Buffalo to Chicago O'Hare Intl Airport

Our best JetBlue deals on Buffalo to Chicago O'Hare Intl Airport flight tickets
JetBlue
Jul 22
BUF6:00 amBuffalo
5h 06m
1 stop
ORD10:06 amChicago O'Hare Intl
Jul 24
ORD5:27 pmChicago O'Hare Intl
5h 46m
1 stop
BUF12:13 amBuffalo
$272
JetBlue
Dec 3
BUF4:00 pmBuffalo
6h 52m
1 stop
ORD9:52 pmChicago O'Hare Intl
Dec 6
ORD7:00 amChicago O'Hare Intl
7h 04m
1 stop
BUF3:04 pmBuffalo
$290
JetBlue
Aug 1
BUF6:00 amBuffalo
7h 16m
1 stop
ORD12:16 pmChicago O'Hare Intl
Aug 8
ORD5:27 pmChicago O'Hare Intl
5h 46m
1 stop
BUF12:13 amBuffalo
$298

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 July 11, 2026.
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

Cheapest round-trip

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 8/28

6:54 pm-11:08 pm

1 stop29h 14m

Chicago O'Hare Intl

Sun 8/30

7:44 pm-6:09 pm

1 stop21h 25m

$271

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 7/22

6:00 am-10:06 am

1 stop5h 06m

Chicago O'Hare Intl

Fri 7/24

5:27 pm-12:13 am

1 stop5h 46m

$272

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 7/23

6:00 am-10:06 am

1 stop5h 06m

Chicago O'Hare Intl

Mon 7/27

7:05 am-1:53 pm

1 stop5h 48m

$273

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 8/6

11:29 am-7:53 pm

1 stop9h 24m

Chicago O'Hare Intl

Fri 8/7

8:58 pm-10:29 am

2 stops36h 31m

$274

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/9

1:13 pm-8:28 pm

1 stop8h 15m

Chicago O'Hare Intl

Tue 10/13

6:05 am-6:01 pm

1 stop10h 56m

$276

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 8/6

11:29 am-7:53 pm

1 stop9h 24m

Chicago O'Hare Intl

Mon 8/10

1:55 pm-4:41 pm

Nonstop1h 46m

$277

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 7/30

9:29 pm-11:10 pm

1 stop26h 41m

Chicago O'Hare Intl

Mon 8/3

5:13 pm-7:06 pm

1 stop24h 53m

$280

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 10/8

6:50 pm-8:00 pm

Nonstop2h 10m

Chicago O'Hare Intl

Tue 10/13

3:14 pm-6:02 pm

Nonstop1h 48m

$284
Quickest round-trip

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/9

8:00 am-9:05 am

Nonstop2h 05m

Chicago O'Hare Intl

Tue 10/13

8:03 am-10:53 am

Nonstop1h 50m

$285

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 12/3

4:00 pm-9:52 pm

1 stop6h 52m

Chicago O'Hare Intl

Sun 12/6

7:00 am-3:04 pm

1 stop7h 04m

$290

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 typical price of a round-trip flight between Buffalo and Chicago O'Hare Intl Airport?

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

The month of August is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Buffalo averaging around $284.

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 Saturday when prices can be found for as low as $445. 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 $570.

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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $461 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $628. 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 from Buffalo 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 $327 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 $223 on momondo.

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

There are 4 cabin classes available to choose from on Buffalo to Chicago O'Hare Intl Airport 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?

You could potentially save up to 35% on your flight if you consider stops on a Buffalo to Chicago O'Hare Intl Airport flight.

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

As of July 2026, prices for Buffalo to Chicago O'Hare Intl Airport flights are approximately 45% 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

$220

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 $220. The best round-trip flight deal from Buffalo to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $377.
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

Frequently asked questions about flying from Buffalo to Chicago O'Hare Intl Airport

  • 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 48m.

  • 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 $92Free CancellationRating
5.6
2,833 reviews
Search Frontier flights
American AirlinesPriceFrom $145Free CancellationRating
7.1
11,807 reviews
Search American Airlines flights
United AirlinesPriceFrom $232Free CancellationRating
7.4
9,977 reviews
Search United Airlines flights

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

    Across 25 United Airlines flights from Buffalo to Chicago O'Hare Intl Airport this week, the average price was $345, with the best United Airlines deals starting from $232 round-trip. 9,977 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 $145 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $335. American Airlines operates 27 flights to Chicago O'Hare Intl Airport from Buffalo in an average week. Users have rated it 7.1/10 across 11,807 reviews.

Traveling to a place near Chicago?

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

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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