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Cheap flights from Buffalo to Illinois from $55

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 12/11. 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.
JetBlue Logo
7:00 am - 1:10 pmBUF-ORD
7h 10m1 stop
JetBlue Logo
2:05 pm - 11:55 pmORD-BUF
8h 50m1 stop
$153JetBlue
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Tue, Jan 20 - Tue, Feb 10
Frontier Logo
8:54 pm - 4:57 pmBUF-MDW
21h 03m1 stop
Frontier Logo
6:15 am - 1:47 pmMDW-BUF
6h 32m1 stop
$154Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16
Multiple Airlines Logo
11:47 am - 10:13 amBUF-ORD
23h 26m1 stop
Multiple Airlines Logo
6:48 am - 4:20 pmORD-BUF
8h 32m1 stop
$194Multiple Airlines
Find Deal
Sat, Nov 22 - Mon, Nov 24
Multiple Airlines Logo
11:30 am - 10:24 pmBUF-ORD
11h 54m1 stop
Multiple Airlines Logo
4:47 pm - 2:23 pmORD-BUF
20h 36m2 stops
$200Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 6
American Airlines Logo
6:00 am - 7:23 amBUF-ORD
2h 23mnonstop
American Airlines Logo
11:51 am - 10:40 pmORD-BUF
9h 49m1 stop
$252American Airlines
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Tue, Jan 20 - Tue, Feb 10
American Airlines Logo
11:26 am - 8:50 pmBUF-ORD
10h 24m1 stop
American Airlines Logo
1:11 pm - 10:57 pmORD-BUF
8h 46m1 stop
$259American Airlines
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Wed, Dec 10 - Mon, Dec 15
Southwest Logo
6:05 am - 7:00 amBUF-MDW
1h 55mnonstop
Southwest Logo
9:30 am - 12:00 pmMDW-BUF
1h 30mnonstop
$265Southwest
Find Deal
Sat, Nov 22 - Mon, Nov 24
Southwest Logo
6:25 pm - 7:10 pmBUF-MDW
1h 45mnonstop
Southwest Logo
1:25 pm - 3:50 pmMDW-BUF
1h 25mnonstop
$269Southwest
Find Deal
Wed, Dec 3 - Tue, Dec 9
United Airlines Logo
7:00 am - 8:05 amBUF-ORD
2h 05mnonstop
United Airlines Logo
10:35 am - 1:12 pmORD-BUF
1h 37mnonstop
$274United Airlines
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Sun, Dec 7 - Wed, Dec 10
United Airlines Logo
5:50 pm - 8:58 pmBUF-MLI
4h 08m1 stop
United Airlines Logo
3:52 pm - 8:31 pmMLI-BUF
3h 39m1 stop
$319United Airlines
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Sat, Apr 4 - Wed, Apr 8

JetBlue flights from Buffalo to Illinois

Our best JetBlue deals on Buffalo to Illinois flight tickets
JetBlue
Jan 20
BUF7:00 amBuffalo
7h 10m
1 stop
ORD1:10 pmChicago O'Hare Intl
Feb 10
ORD2:05 pmChicago O'Hare Intl
8h 50m
1 stop
BUF11:55 pmBuffalo
$153
Find similar
JetBlue
Jan 8
BUF2:45 pmBuffalo
6h 00m
1 stop
ORD7:45 pmChicago O'Hare Intl
Jan 12
ORD2:05 pmChicago O'Hare Intl
8h 50m
1 stop
BUF11:55 pmBuffalo
$155
Find similar
JetBlue
Jan 7
BUF2:45 pmBuffalo
6h 00m
1 stop
ORD7:45 pmChicago O'Hare Intl
Jan 9
ORD10:45 amChicago O'Hare Intl
7h 05m
1 stop
BUF6:50 pmBuffalo
$181
Find similar

American Airlines flights from Buffalo to Illinois

Our best American Airlines deals on Buffalo to Illinois flight tickets
American Airlines
Jan 20
BUF6:00 amBuffalo
2h 23m
ORD7:23 amChicago O'Hare Intl
Feb 10
ORD11:51 amChicago O'Hare Intl
9h 49m
1 stop
BUF10:40 pmBuffalo
$252
Find similar
American Airlines
Dec 10
BUF11:26 amBuffalo
10h 24m
1 stop
ORD8:50 pmChicago O'Hare Intl
Dec 15
ORD1:11 pmChicago O'Hare Intl
8h 46m
1 stop
BUF10:57 pmBuffalo
$259
Find similar
American Airlines
Jan 20
BUF5:16 pmBuffalo
2h 24m
ORD6:40 pmChicago O'Hare Intl
Feb 10
ORD6:00 amChicago O'Hare Intl
8h 17m
1 stop
BUF3:17 pmBuffalo
$262
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 October 30, 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 - ORD

BUFORD

Buffalo

Tue 1/20

7:00 am-1:10 pm

1 stop7h 10m

Chicago O'Hare Intl

Tue 2/10

2:05 pm-11:55 pm

1 stop8h 50m

$153

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 11/13

8:54 pm-4:57 pm

1 stop21h 03m

Chicago Midway

Sun 11/16

6:15 am-1:47 pm

1 stop6h 32m

$154

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 11/22

11:47 am-10:13 am

1 stop23h 26m

Chicago O'Hare Intl

Mon 11/24

6:48 am-4:20 pm

1 stop8h 32m

$194

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 12/5

11:30 am-10:24 pm

1 stop11h 54m

Chicago O'Hare Intl

Sat 12/6

4:47 pm-2:23 pm

2 stops20h 36m

$200

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

6:00 am-7:23 am

Nonstop2h 23m

Chicago O'Hare Intl

Tue 2/10

11:51 am-10:40 pm

1 stop9h 49m

$252

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 12/10

11:26 am-8:50 pm

1 stop10h 24m

Chicago O'Hare Intl

Mon 12/15

1:11 pm-10:57 pm

1 stop8h 46m

$259

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Sat 11/22

6:05 am-7:00 am

Nonstop1h 55m

Chicago Midway

Mon 11/24

9:30 am-12:00 pm

Nonstop1h 30m

$265

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 12/3

6:25 pm-7:10 pm

Nonstop1h 45m

Chicago Midway

Tue 12/9

1:25 pm-3:50 pm

Nonstop1h 25m

$269

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 12/7

7:00 am-8:05 am

Nonstop2h 05m

Chicago O'Hare Intl

Wed 12/10

10:35 am-1:12 pm

Nonstop1h 37m

$274

BuffaloMoline

BUF - MLI

BUFMLI

Buffalo

Sat 4/4

5:50 pm-8:58 pm

1 stop4h 08m

Moline Quad-City

Wed 4/8

3:52 pm-8:31 pm

1 stop3h 39m

$319

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 $423. Flights from Buffalo to Illinois on a Sunday will generally be more expensive and average around $528. 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 $421. Flights at noon are often more expensive with an average ticket price of $574.

What is the cheapest Buffalo to Illinois flight route?

Fly from Buffalo to Chicago Midway 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 $339 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 $254 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?

No. A direct flight is the cheapest option for a flight between Buffalo to Illinois.

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

$179

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from Buffalo in the past 72 hours is $179. 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 2 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)
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  • 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 $58Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
American AirlinesPriceFrom $161Free CancellationRating
7.2
11,030 reviews
Search American Airlines flights
United AirlinesPriceFrom $175Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
SouthwestPriceFrom $259Free CancellationRating
8.0
4,242 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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