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Cheap flights from Buffalo to Illinois 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 Illinois departing on 2/28. 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
0 bags

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Find the cheapest flights from Buffalo to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:39 pm - 10:19 pm
BUF
-
MDW
9h 40m1 stop
Frontier Logo
6:20 am - 12:44 pm
MDW
-
BUF
5h 24m1 stop
$162Frontier
Mon, Feb 2 - Thu, Feb 5
Frontier Logo
1:39 pm - 10:46 pm
BUF
-
ORD
10h 07m1 stop
Frontier Logo
5:40 am - 12:44 pm
ORD
-
BUF
6h 04m1 stop
$162Frontier
Mon, Feb 2 - Thu, Feb 5
Frontier Logo
1:39 pm - 10:19 pm
BUF
-
MDW
9h 40m1 stop
Frontier Logo
6:20 am - 12:44 pm
MDW
-
BUF
5h 24m1 stop
$163Frontier
Thu, Jan 29 - Thu, Feb 5
JetBlue Logo
10:25 am - 5:43 pm
BUF
-
ORD
8h 18m1 stop
JetBlue Logo
7:45 am - 2:30 pm
ORD
-
BUF
5h 45m1 stop
$169JetBlue
Tue, Jan 13 - Tue, Jan 20
JetBlue Logo
10:25 am - 5:43 pm
BUF
-
ORD
8h 18m1 stop
JetBlue Logo
7:45 am - 2:30 pm
ORD
-
BUF
5h 45m1 stop
$171JetBlue
Tue, Jan 13 - Tue, Jan 20
Southwest Logo
6:25 pm - 7:10 pm
BUF
-
MDW
1h 45mnonstop
Southwest Logo
6:10 pm - 8:40 pm
MDW
-
BUF
1h 30mnonstop
$223Southwest
Wed, Dec 24 - Wed, Dec 31
Southwest Logo
6:25 pm - 7:10 pm
BUF
-
MDW
1h 45mnonstop
Southwest Logo
5:35 am - 1:25 pm
MDW
-
BUF
6h 50m1 stop
$263Southwest
Wed, Dec 24 - Wed, Dec 31
American Airlines Logo
8:00 am - 3:04 pm
BUF
-
STL
8h 04m2 stops
American Airlines Logo
3:54 pm - 11:41 pm
STL
-
BUF
6h 47m1 stop
$282American Airlines
Sun, Jan 18 - Tue, Jan 20
United Airlines Logo
6:00 am - 2:30 pm
BUF
-
STL
9h 30m2 stops
United Airlines Logo
6:30 am - 2:14 pm
STL
-
BUF
6h 44m2 stops
$320United Airlines
Sun, Jan 18 - Tue, Jan 20
United Airlines Logo
1:59 pm - 10:12 am
BUF
-
MLI
21h 13m1 stop
United Airlines Logo
3:45 pm - 8:29 pm
MLI
-
BUF
3h 44m1 stop
$434United Airlines
Sat, Jan 31 - Wed, Feb 4

United Airlines flights from Buffalo to Illinois

Our best United Airlines deals on Buffalo to Illinois flight tickets
United Airlines
Jan 17
BUF1:59 pmBuffalo
2h 05m
ORD3:04 pmChicago O'Hare Intl
Jan 18
ORD5:50 pmChicago O'Hare Intl
1h 39m
BUF8:29 pmBuffalo
$223
Find similar
United Airlines
Jan 13
BUF1:59 pmBuffalo
2h 05m
ORD3:04 pmChicago O'Hare Intl
Jan 20
ORD5:50 pmChicago O'Hare Intl
1h 39m
BUF8:29 pmBuffalo
$232
Find similar
United Airlines
Jan 16
BUF5:23 pmBuffalo
2h 07m
ORD6:30 pmChicago O'Hare Intl
Jan 18
ORD5:50 pmChicago O'Hare Intl
1h 39m
BUF8:29 pmBuffalo
$276
Find similar

American Airlines flights from Buffalo to Illinois

Our best American Airlines deals on Buffalo to Illinois flight tickets
American Airlines
Dec 24
BUF7:40 amBuffalo
2h 18m
ORD8:58 amChicago O'Hare Intl
Dec 31
ORD3:16 pmChicago O'Hare Intl
1h 43m
BUF5:59 pmBuffalo
$224
Find similar
American Airlines
Jan 20
BUF5:16 pmBuffalo
2h 24m
ORD6:40 pmChicago O'Hare Intl
Feb 10
ORD1:54 pmChicago O'Hare Intl
1h 41m
BUF4:35 pmBuffalo
$233
Find similar
American Airlines
Jan 17
BUF11:22 amBuffalo
2h 15m
ORD12:37 pmChicago O'Hare Intl
Jan 18
ORD6:00 amChicago O'Hare Intl
8h 17m
1 stop
BUF3:17 pmBuffalo
$234
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to Illinois 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 December 16, 2025.
Use the filters below to find and compare flights from Buffalo to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Mon 2/2

1:39 pm-10:19 pm

1 stop9h 40m

Chicago Midway

Thu 2/5

6:20 am-12:44 pm

1 stop5h 24m

$162

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 2/2

1:39 pm-10:46 pm

1 stop10h 07m

Chicago O'Hare Intl

Thu 2/5

5:40 am-12:44 pm

1 stop6h 04m

$162

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 1/29

1:39 pm-10:19 pm

1 stop9h 40m

Chicago Midway

Thu 2/5

6:20 am-12:44 pm

1 stop5h 24m

$163

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/13

10:25 am-5:43 pm

1 stop8h 18m

Chicago O'Hare Intl

Tue 1/20

7:45 am-2:30 pm

1 stop5h 45m

$169

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/13

10:25 am-5:43 pm

1 stop8h 18m

Chicago O'Hare Intl

Tue 1/20

7:45 am-2:30 pm

1 stop5h 45m

$171

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 12/24

6:25 pm-7:10 pm

Nonstop1h 45m

Chicago Midway

Wed 12/31

6:10 pm-8:40 pm

Nonstop1h 30m

$223

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 12/24

6:25 pm-7:10 pm

Nonstop1h 45m

Chicago Midway

Wed 12/31

5:35 am-1:25 pm

1 stop6h 50m

$263

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Sun 1/18

8:00 am-3:04 pm

2 stops8h 04m

Lambert-St Louis

Tue 1/20

3:54 pm-11:41 pm

1 stop6h 47m

$282

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Sun 1/18

6:00 am-2:30 pm

2 stops9h 30m

Lambert-St Louis

Tue 1/20

6:30 am-2:14 pm

2 stops6h 44m

$320

BuffaloMoline

BUF - MLI

BUFMLI

Buffalo

Sat 1/31

1:59 pm-10:12 am

1 stop21h 13m

Moline Quad-City

Wed 2/4

3:45 pm-8:29 pm

1 stop3h 44m

$434

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 Illinois from

How to get the cheapest flight ticket from Buffalo to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Buffalo is in August. Flight prices, which tend to average around $217, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $269.

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

The cheapest day to depart from Buffalo to Illinois is on a Friday when prices can be found for as low as $426. Flights from Buffalo to Illinois on a Sunday will generally be more expensive and average around $521. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Buffalo to Illinois during this time can be as low as $414. Flights at noon are often more expensive with an average ticket price of $588.

What is the cheapest Buffalo to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $333 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Buffalo for as low as $226 on momondo.

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

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

You could potentially save up to 36% on your flight if you consider stops on a Buffalo to Illinois flight.

Cheap Buffalo to Illinois flight deals and tips

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

Best Price Found

$194

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Buffalo in the past 72 hours is $194. The best round-trip flight deal from Buffalo to Illinois found on momondo in the last 72 hours is $322.
The fastest flight from Buffalo to Illinois takes 1h 40m
Direct flights go from Buffalo to Illinois every day.
There are 98 airports in Illinois. From Buffalo there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).
Search flight deals

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

    Prices for flights from Buffalo Airport to Illinois are updated daily.

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

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

    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 Illinois.

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

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Buffalo to Illinois

Compare and see reviews for airlines that fly from Buffalo to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $129Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
United AirlinesPriceFrom $157Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
American AirlinesPriceFrom $160Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
SouthwestPriceFrom $237Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Buffalo to Illinois. momondo saves you time and could save you money on your trip.

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

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

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

Once all potential Buffalo to Illinois 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 Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Buffalo to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.

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