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Cheap flights from Buffalo to Chicago from $70

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 2/21. 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

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Frontier Logo
12:20 pm - 9:33 pm
BUF
-
MDW
10h 13m1 stop
Frontier Logo
6:00 am - 12:53 pm
MDW
-
BUF
5h 53m1 stop
$144Frontier
Sat, Feb 21 - Mon, Mar 2
Frontier Logo
12:20 pm - 10:39 pm
BUF
-
ORD
11h 19m1 stop
Frontier Logo
5:05 am - 12:53 pm
ORD
-
BUF
6h 48m1 stop
$144Frontier
Sat, Feb 21 - Mon, Mar 2
Frontier Logo
7:59 pm - 7:52 pm
BUF
-
MDW
24h 53m1 stop
Frontier Logo
6:20 am - 12:44 pm
MDW
-
BUF
5h 24m1 stop
$145Frontier
Thu, Jan 29 - Mon, Feb 2
Frontier Logo
7:59 pm - 10:35 am
BUF
-
ORD
15h 36m1 stop
Frontier Logo
5:40 am - 12:44 pm
ORD
-
BUF
6h 04m1 stop
$145Frontier
Thu, Jan 29 - Mon, Feb 2
Frontier Logo
7:59 pm - 7:52 pm
BUF
-
MDW
24h 53m1 stop
Frontier Logo
6:20 am - 12:44 pm
MDW
-
BUF
5h 24m1 stop
$146Frontier
Thu, Jan 29 - Mon, Feb 2
Multiple Airlines Logo
1:39 pm - 10:46 pm
BUF
-
ORD
10h 07m1 stop
Multiple Airlines Logo
7:45 am - 2:30 pm
ORD
-
BUF
5h 45m1 stop
$166Multiple Airlines
Thu, Jan 29 - Tue, Feb 3
Multiple Airlines Logo
10:42 am - 8:12 pm
BUF
-
ORD
10h 30m1 stop
Multiple Airlines Logo
12:44 pm - 11:34 am
ORD
-
BUF
21h 50m1 stop
$169Multiple Airlines
Fri, Feb 20 - Wed, Feb 25
JetBlue Logo
3:05 pm - 11:21 pm
BUF
-
ORD
9h 16m1 stop
JetBlue Logo
12:41 pm - 6:35 pm
ORD
-
BUF
4h 54m1 stop
$171JetBlue
Mon, Feb 23 - Thu, Feb 26
Southwest Logo
12:05 pm - 12:50 pm
BUF
-
MDW
1h 45mnonstop
Southwest Logo
8:00 am - 10:30 am
MDW
-
BUF
1h 30mnonstop
$177Southwest
Mon, Mar 16 - Thu, Mar 19
Southwest Logo
6:15 pm - 12:45 am
BUF
-
MDW
7h 30m1 stop
Southwest Logo
8:00 am - 10:30 am
MDW
-
BUF
1h 30mnonstop
$187Southwest
Mon, Mar 16 - Thu, Mar 19

Frontier flights from Buffalo to Chicago

Our best Frontier deals on Buffalo to Chicago flight tickets
Frontier
Feb 21
BUF12:20 pmBuffalo
11h 19m
1 stop
ORD10:39 pmChicago O'Hare Intl
Mar 2
ORD5:05 amChicago O'Hare Intl
6h 48m
1 stop
BUF12:53 pmBuffalo
$144
Frontier
Jan 29
BUF7:59 pmBuffalo
15h 36m
1 stop
ORD10:35 amChicago O'Hare Intl
Feb 2
ORD5:40 amChicago O'Hare Intl
6h 04m
1 stop
BUF12:44 pmBuffalo
$145
Frontier
Jan 29
BUF1:39 pmBuffalo
10h 07m
1 stop
ORD10:46 pmChicago O'Hare Intl
Feb 2
ORD5:40 amChicago O'Hare Intl
6h 04m
1 stop
BUF12:44 pmBuffalo
$146

Delta flights from Buffalo to Chicago

Our best Delta deals on Buffalo to Chicago flight tickets
Delta
Feb 25
BUF6:15 amBuffalo
4h 26m
1 stop
ORD9:41 amChicago O'Hare Intl
Feb 25
ORD5:37 pmChicago O'Hare Intl
4h 20m
1 stop
BUF10:57 pmBuffalo
$197
Delta
Jan 21
BUF11:51 amBuffalo
10h 44m
1 stop
ORD9:35 pmChicago O'Hare Intl
Jan 29
ORD6:00 amChicago O'Hare Intl
7h 10m
1 stop
BUF2:10 pmBuffalo
$227
Delta
Feb 25
BUF7:00 amBuffalo
7h 29m
1 stop
ORD1:29 pmChicago O'Hare Intl
Feb 28
ORD6:30 amChicago O'Hare Intl
4h 13m
1 stop
BUF11:43 amBuffalo
$229

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to Chicago 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 January 8, 2026.
Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Sat 2/21

12:20 pm-9:33 pm

1 stop10h 13m

Chicago Midway

Mon 3/2

6:00 am-12:53 pm

1 stop5h 53m

$144

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 2/21

12:20 pm-10:39 pm

1 stop11h 19m

Chicago O'Hare Intl

Mon 3/2

5:05 am-12:53 pm

1 stop6h 48m

$144

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 1/29

7:59 pm-7:52 pm

1 stop24h 53m

Chicago Midway

Mon 2/2

6:20 am-12:44 pm

1 stop5h 24m

$145

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 1/29

7:59 pm-10:35 am

1 stop15h 36m

Chicago O'Hare Intl

Mon 2/2

5:40 am-12:44 pm

1 stop6h 04m

$145

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 1/29

7:59 pm-7:52 pm

1 stop24h 53m

Chicago Midway

Mon 2/2

6:20 am-12:44 pm

1 stop5h 24m

$146

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 1/29

1:39 pm-10:46 pm

1 stop10h 07m

Chicago O'Hare Intl

Tue 2/3

7:45 am-2:30 pm

1 stop5h 45m

$166

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 2/20

10:42 am-8:12 pm

1 stop10h 30m

Chicago O'Hare Intl

Wed 2/25

12:44 pm-11:34 am

1 stop21h 50m

$169

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 2/23

3:05 pm-11:21 pm

1 stop9h 16m

Chicago O'Hare Intl

Thu 2/26

12:41 pm-6:35 pm

1 stop4h 54m

$171

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Mon 3/16

12:05 pm-12:50 pm

Nonstop1h 45m

Chicago Midway

Thu 3/19

8:00 am-10:30 am

Nonstop1h 30m

$177

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Mon 3/16

6:15 pm-12:45 am

1 stop7h 30m

Chicago Midway

Thu 3/19

8:00 am-10:30 am

Nonstop1h 30m

$187

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

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?

What is the cheapest month to fly to Chicago?

The month of August is, on average, the cheapest month to fly to Chicago from Buffalo, with most prices found around $217. If you’re not able to fly to Chicago in August, then September is your next best option. Flight prices from Buffalo to Chicago during September average around $269.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Friday when prices can be found for as low as $421. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Buffalo to Chicago for around $517.

What is the cheapest time of day to depart on your flight to Chicago?

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from Buffalo to Chicago during this time can be as low as $413. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $582.

What is the cheapest Buffalo to Chicago flight route?

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

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $332 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Buffalo for as low as $226 on momondo.

What cabin class options are available on Buffalo to Chicago flights?

There are 4 cabin classes available to choose from on Buffalo to Chicago 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 flights?

You could potentially save up to 35% on your flight if you consider stops on a Buffalo to Chicago flight.

How have Buffalo to Chicago flight prices changed over time?

As of January 2026, prices for Buffalo to Chicago flights are approximately 103% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to Chicago

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

Cheap Buffalo to Chicago (BUF to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Chicago

Best Price Found

$198

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Chicago

3 airports
The best one-way flight to Chicago from Buffalo in the past 72 hours is $198. The best round-trip flight deal from Buffalo to Chicago found on momondo in the last 72 hours is $302.
The fastest flight from Buffalo to Chicago takes 1h 40m
Direct flights go from Buffalo to Chicago every day.
There are 3 airports in Chicago. From Buffalo there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).
Search flight deals

  • How far is Buffalo to Chicago by plane?

    A flight from Buffalo to Chicago will travel around 451.4 mi. Flights usually cover this in 1h 40m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Buffalo Airport to Chicago?

    Prices for flights from Buffalo Airport to Chicago were last updated today.

  • How many operators does momondo search for flights from Buffalo Airport to Chicago?

  • How old do you have to be to fly from Buffalo Airport to Chicago?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buffalo Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Buffalo to Chicago?

  • What is the most popular airline from Buffalo to Chicago?

Best airlines flying from Buffalo to Chicago

Compare and see reviews for airlines that fly from Buffalo to Chicago with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $129Free CancellationRating
5.7
3,061 reviews
Search Frontier flights
United AirlinesPriceFrom $157Free CancellationRating
7.4
9,141 reviews
Search United Airlines flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
11,095 reviews
Search American Airlines flights
SouthwestPriceFrom $237Free CancellationRating
8.0
4,250 reviews
Search Southwest flights

  • Southwest Flights From Buffalo to Chicago

    Southwest is one of the most popular airlines flying from Buffalo to Chicago, operating 5 flights/week on average for this route. A good Southwest flight deal for Buffalo to Chicago starts from $237 round-trip, up to an average price of $349. Our users have rated Southwest at 8.0/10.

  • United Airlines Flights From Buffalo to Chicago

    United Airlines (7.4/10 from 9,141 reviews) operates around 19 flights from Buffalo to Chicago in any given week. The average United Airlines airfare for this route is around $356, with deals from around $157 rare but found on momondo. Referenced prices are for round-trip Buffalo to Chicago flight searches in the last 72 hours.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Saint Joseph
Portage
Lansing
Schererville
Valparaiso
Munster
Crown Point
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Buffalo to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Chicago from Buffalo which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Buffalo to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Buffalo and alert you when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport