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Cheap flights from Illinois to Buffalo from $78

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Buffalo departing on 11/18. 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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Find the cheapest flights from Illinois to Buffalo

Cheap round-trip flights

Southwest Logo
8:30 pm - 11:00 pmMDW-BUF
1h 30mnonstop
Southwest Logo
6:45 pm - 7:25 pmBUF-MDW
1h 40mnonstop
$155Southwest
Find Deal
mar., sep. 2 - mié., sep. 3
American Airlines Logo
7:09 pm - 9:51 pmORD-BUF
1h 42mnonstop
American Airlines Logo
11:46 am - 12:40 pmBUF-ORD
1h 54mnonstop
$155American Airlines
Find Deal
mar., sep. 23 - mar., sep. 30
Delta Logo
11:05 am - 6:07 pmORD-BUF
6h 02m1 stop
Delta Logo
5:10 pm - 9:35 pmBUF-ORD
5h 25m1 stop
$187Delta
Find Deal
mar., sep. 2 - sáb., sep. 6
Delta Logo
10:35 am - 5:23 pmORD-BUF
5h 48m1 stop
Delta Logo
5:55 pm - 9:48 pmBUF-ORD
4h 53m1 stop
$197Delta
Find Deal
jue., nov. 27 - mié., ene. 7
JetBlue Logo
1:36 pm - 10:07 pmORD-BUF
7h 31m1 stop
JetBlue Logo
6:00 am - 12:10 pmBUF-ORD
7h 10m1 stop
$205JetBlue
Find Deal
vie., sep. 12 - mar., sep. 16
JetBlue Logo
6:45 am - 2:57 pmORD-BUF
7h 12m1 stop
JetBlue Logo
6:00 am - 12:10 pmBUF-ORD
7h 10m1 stop
$208JetBlue
Find Deal
lun., sep. 8 - mar., sep. 9
Frontier Logo
11:36 am - 6:46 pmORD-BUF
6h 10m1 stop
Frontier Logo
12:17 pm - 12:10 amBUF-ORD
12h 53m1 stop
$214Frontier
Find Deal
jue., sep. 11 - lun., sep. 15
United Airlines Logo
7:10 am - 9:53 amORD-BUF
1h 43mnonstop
United Airlines Logo
7:05 am - 8:03 amBUF-ORD
1h 58mnonstop
$215United Airlines
Find Deal
mar., sep. 2 - mar., sep. 9
Frontier Logo
11:36 am - 6:46 pmORD-BUF
6h 10m1 stop
Frontier Logo
12:17 pm - 12:10 amBUF-ORD
12h 53m1 stop
$218Frontier
Find Deal
jue., sep. 11 - lun., sep. 15
United Airlines Logo
6:28 pm - 9:16 pmORD-BUF
1h 48mnonstop
United Airlines Logo
10:55 am - 11:51 amBUF-ORD
1h 56mnonstop
$226United Airlines
Find Deal
lun., sep. 1 - mar., sep. 2

Frontier flights from Illinois to Buffalo

Our best Frontier deals on Illinois to Buffalo flight tickets
Frontier
Aug 21
MDW11:03 amChicago Midway
6h 11m
1 stop
BUF6:14 pmBuffalo
Aug 23
BUF1:56 pmBuffalo
10h 12m
1 stop
MDW11:08 pmChicago Midway
$197
Find similar
Frontier
Aug 16
ORD5:01 amChicago O'Hare Intl
6h 10m
1 stop
BUF12:11 pmBuffalo
Aug 21
BUF9:45 amBuffalo
8h 12m
1 stop
ORD4:57 pmChicago O'Hare Intl
$212
Find similar
Frontier
Sep 11
ORD11:36 amChicago O'Hare Intl
6h 10m
1 stop
BUF6:46 pmBuffalo
Sep 15
BUF12:17 pmBuffalo
12h 53m
1 stop
ORD12:10 amChicago O'Hare Intl
$214
Find similar

American Airlines flights from Illinois to Buffalo

Our best American Airlines deals on Illinois to Buffalo flight tickets
American Airlines
Sep 23
ORD7:09 pmChicago O'Hare Intl
1h 42m
BUF9:51 pmBuffalo
Sep 30
BUF11:46 amBuffalo
1h 54m
ORD12:40 pmChicago O'Hare Intl
$155
Find similar
American Airlines
Sep 17
ORD8:33 amChicago O'Hare Intl
1h 33m
BUF11:06 amBuffalo
Sep 18
BUF7:30 amBuffalo
1h 55m
ORD8:25 amChicago O'Hare Intl
$166
Find similar
American Airlines
Sep 17
ORD8:33 amChicago O'Hare Intl
1h 33m
BUF11:06 amBuffalo
Sep 18
BUF7:30 amBuffalo
1h 55m
ORD8:25 amChicago O'Hare Intl
$167
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Buffalo 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 agosto 12, 2025.
Use the filters below to find and compare flights from Illinois to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

mar. 9/2

8:30 pm-11:00 pm

Nonstop1h 30m

Buffalo

mié. 9/3

6:45 pm-7:25 pm

Nonstop1h 40m

$155

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mar. 9/23

7:09 pm-9:51 pm

Nonstop1h 42m

Buffalo

mar. 9/30

11:46 am-12:40 pm

Nonstop1h 54m

$155

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mar. 9/2

11:05 am-6:07 pm

1 stop6h 02m

Buffalo

sáb. 9/6

5:10 pm-9:35 pm

1 stop5h 25m

$187

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

jue. 11/27

10:35 am-5:23 pm

1 stop5h 48m

Buffalo

mié. 1/7

5:55 pm-9:48 pm

1 stop4h 53m

$197

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

vie. 9/12

1:36 pm-10:07 pm

1 stop7h 31m

Buffalo

mar. 9/16

6:00 am-12:10 pm

1 stop7h 10m

$205

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

lun. 9/8

6:45 am-2:57 pm

1 stop7h 12m

Buffalo

mar. 9/9

6:00 am-12:10 pm

1 stop7h 10m

$208

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

jue. 9/11

11:36 am-6:46 pm

1 stop6h 10m

Buffalo

lun. 9/15

12:17 pm-12:10 am

1 stop12h 53m

$214

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mar. 9/2

7:10 am-9:53 am

Nonstop1h 43m

Buffalo

mar. 9/9

7:05 am-8:03 am

Nonstop1h 58m

$215

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

jue. 9/11

11:36 am-6:46 pm

1 stop6h 10m

Buffalo

lun. 9/15

12:17 pm-12:10 am

1 stop12h 53m

$218

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

lun. 9/1

6:28 pm-9:16 pm

Nonstop1h 48m

Buffalo

mar. 9/2

10:55 am-11:51 am

Nonstop1h 56m

$226

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 Buffalo from

How to get the cheapest flight ticket from Illinois to Buffalo

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 Buffalo?

If you aren’t able to travel during the month of September, then book flights to Buffalo from Illinois during June instead. Flights to Buffalo in June, while not as cheap as those in September, still average around $301.

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

Our data shows that Tuesday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $300. Flights from Illinois to Buffalo on a Sunday will generally be more expensive and average around $359. 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 Buffalo?

In the morning is the cheapest time of day to fly from Illinois to Buffalo when you can find flight prices for as low as $336. Flying to Buffalo in the morning is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Buffalo, so prices are often more expensive at around $344 per ticket.

What is the cheapest Illinois to Buffalo flight route?

Fly from Chicago Midway to Buffalo for the best Illinois - Buffalo flight prices

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

You are more likely to see cheaper flights to Buffalo from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $327 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from Illinois for as low as $238 on momondo.

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

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

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

Cheap Illinois to Buffalo flight deals and tips

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

Best Price Found

$78

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Buffalo

1 airport
The best one-way flight to Buffalo from Illinois in the past 72 hours is $78. The best round-trip flight deal from Illinois to Buffalo found on momondo in the last 72 hours is $155.
The fastest flight from Illinois to Buffalo takes 1h 25m
Direct flights go from Illinois to Buffalo every day.
There is 1 airport near Buffalo: Buffalo (BUF)
Search flight deals

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

    Prices for flights from Illinois to Buffalo Airport are refreshed on a daily basis.

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

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

    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 Illinois to Buffalo Airport.

  • What documentation or ID do you need to fly to Buffalo Airport?

    The travel and health documents you'll need for your trip to Buffalo Airport 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 Buffalo Airport. 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 Illinois to Buffalo?

Best airlines flying from Illinois to Buffalo

Compare and see reviews for airlines that fly from Illinois to Buffalo with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $128Free CancellationRating
5.8
3,221 reviews
Search Frontier flights
American AirlinesPriceFrom $162Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $198Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights
SouthwestPriceFrom $264Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Batavia
Cheektowaga
Tonawanda
Amherst
Williamsville
Grand Island
Lockport
Orchard Park
West Seneca
East Aurora
Bowmansville
Eden
Angola

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Buffalo from Illinois.

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

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

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

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

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

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