HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buffalo

$85+ Cheap flights from Illinois to Buffalo (BUF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUF
Jul 5 — Jul 121
Sun 7/5
Sun 7/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Buffalo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Buffalo

Cheapest flights from Illinois to Buffalo
Explore the most affordable flight options available from Illinois to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 5, 2026.

This Super.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
ORD
-
BUF
1 stop7h 59m
JetBlue
Wed 7/153:55 pm
BUF
-
ORD
1 stop7h 03m
JetBlue
Deal found 6/4$162
This JetBlue deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/299:40 am
ORD
-
BUF
1 stop7h 46m
JetBlue
Tue 8/43:55 pm
BUF
-
ORD
1 stop7h 03m
JetBlue
Deal found 6/4$169
This JetBlue deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:00 am
ORD
-
BUF
1 stop7h 57m
JetBlue
Tue 8/113:52 pm
BUF
-
ORD
1 stop7h 03m
JetBlue
Deal found 6/4$177
This Super.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:55 pm
ORD
-
BUF
1 stop8h 53m
JetBlue
Tue 7/76:00 am
BUF
-
ORD
1 stop5h 06m
JetBlue
Deal found 6/3$183
This Justfly.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:12 am
ORD
-
BUF
1 stop8h 01m
JetBlue
Wed 7/83:55 pm
BUF
-
ORD
1 stop6h 08m
JetBlue
Deal found 6/4$185
This Super.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:27 pm
ORD
-
BUF
1 stop5h 38m
JetBlue
Mon 8/103:32 pm
BUF
-
ORD
1 stop7h 23m
JetBlue
Deal found 6/4$186
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:34 pm
STL
-
BUF
1 stop18h 19m
Frontier
Sun 8/1611:29 am
BUF
-
STL
1 stop7h 08m
Frontier
Deal found 6/4$187
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:06 pm
STL
-
BUF
1 stop16h 34m
Frontier
Fri 7/32:50 pm
BUF
-
STL
1 stop19h 02m
Frontier
Deal found 6/4$191
This Super.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:00 am
ORD
-
BUF
1 stop7h 59m
JetBlue
Wed 7/83:55 pm
BUF
-
ORD
1 stop6h 08m
JetBlue
Deal found 6/4$195
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:30 am
STL
-
BUF
1 stop6h 26m
United Airlines
Wed 8/195:58 pm
BUF
-
STL
1 stop5h 02m
United Airlines
Deal found 6/1$197
This Super.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:27 pm
ORD
-
BUF
1 stop5h 38m
JetBlue
Mon 8/176:00 am
BUF
-
ORD
1 stop5h 06m
JetBlue
Deal found 6/4$197
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
-
BUF
1 stop17h 36m
Frontier
Mon 7/272:48 pm
BUF
-
STL
1 stop27h 49m
Frontier
Deal found 6/4$202

Find flight deals from Illinois to Buffalo

Keep the following information in mind while searching for Illinois to Buffalo flight deals. Data was last updated June 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$162
(Super.com)

One-way from

$85
(JetBlue)

Popular in

February

Cheapest in

September

Average price

$349

Good round-trip deal

$315 or less

Good one-way deal

$145 or less
Provider with most accurate pricing for Chicago (CHI)-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Buffalo flights.
Search Deals
From Illinois to Buffalo
Search Deals
One-way flight from Illinois to Buffalo
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Buffalo.
Search Deals
Price to beat on a one-way flight from Illinois to Buffalo.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 5, 2026.
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

Cheapest round-trip

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 7/29

9:40 am-6:26 pm

1 stop7h 46m

Buffalo

Wed 8/5

9:15 am-5:34 pm

1 stop9h 19m

$169

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 7/29

9:40 am-6:26 pm

1 stop7h 46m

Buffalo

Tue 8/4

3:55 pm-9:58 pm

1 stop7h 03m

$169

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 9/30

6:40 am-11:17 am

1 stop3h 37m

Buffalo

Tue 10/13

9:00 am-1:20 pm

1 stop5h 20m

$236

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 8/10

7:15 am-10:00 am

Nonstop1h 45m

Buffalo

Tue 8/18

6:55 am-7:55 am

Nonstop2h 00m

$261

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 6/30

5:22 pm-11:59 pm

1 stop5h 37m

Buffalo

Tue 7/7

6:29 am-10:37 am

1 stop5h 08m

$273

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 9/19

7:40 am-10:10 am

Nonstop1h 30m

Buffalo

Mon 9/21

1:40 pm-7:00 pm

1 stop6h 20m

$279

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 10/10

6:30 am-2:10 pm

2 stops6h 40m

Buffalo

Mon 10/12

8:05 am-8:45 am

Nonstop1h 40m

$284

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 10/1

7:17 pm-11:54 pm

1 stop3h 37m

Buffalo

Sat 10/3

6:20 am-10:37 am

1 stop5h 17m

$289

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Mon 8/10

1:20 pm-9:50 pm

2 stops7h 30m

Buffalo

Tue 8/18

3:00 pm-10:20 pm

2 stops8h 20m

$291

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 7/13

1:55 pm-4:41 pm

Nonstop1h 46m

Buffalo

Wed 7/15

6:04 pm-7:03 pm

Nonstop1h 59m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Illinois to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Buffalo

What is the cheapest month to book a flight from Illinois to Buffalo?

Currently, January is the cheapest month in which you can book a flight from Illinois to Buffalo (average of $98). Flying from Illinois to Buffalo in March is currently the most expensive (average of $257). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to BUF?

Find hourly flight availability from Illinois to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 5, 2026.

A simple way to save on the total cost of your ticket is to fly from Illinois to Buffalo in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

Weekly flight availability from Illinois to Buffalo

Explore weekly flight availability from Illinois to Buffalo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 5, 2026.

The most flights from USIL to BUF are scheduled on a Thursday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost to fly round-trip from Illinois to Buffalo?

How far ahead should I book a flight from Illinois to Buffalo?

The price you pay for your flight from Illinois to Buffalo may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Illinois to Buffalo?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Buffalo. Price data was last updated on May 30, 2026.

Travelers seeking maximum savings on their Illinois to Buffalo flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Buffalo from Illinois?

    If you book a flight to Buffalo from Illinois, you will be flying to Buffalo, which is the city’s only airport. Buffalo (BUF) is located 8.3 mi from the center of Buffalo.

  • How long is the flight from Illinois to Buffalo?

    A quick flight from Illinois to Buffalo can take about 1h 45m. JetBlue provides one of the quickest options available for as low as $261. There are 472 mi between Illinois and Buffalo. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Buffalo one-way?

    One-way options have recently been found by users for as low as $85 on JetBlue. Other airlines that offer cheap prices include Southwest from $88 and Frontier from $95 one-way.

  • What are the most popular routes from Illinois to Buffalo?

    The most popular flight routes from Illinois to Buffalo are Chicago O'Hare Intl - Buffalo, Chicago Midway - Buffalo and Lambert-St Louis - Buffalo.

  • What are the most reliable airlines from Illinois to Buffalo?

    Before booking your flight to Buffalo from Illinois, check out the most reliable airlines to get you to your destination on time: Avianca (92%), SkyWest Airlines (83%), Japan Airlines( 78%).

  • What are the cheapest flights from Illinois to Buffalo?

    While on average a flight from Illinois to Buffalo is generally $290, our data shows the cheapest flight currently is $96. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $162 for that flight.

  • Can I find deals for flights from Illinois to Buffalo that include hotel bookings?

    Yes. In addition to deals on Illinois to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Buffalo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Buffalo.

  • Can I find deals for business class flights from Illinois to Buffalo?

    Yes. Cheapflights offers flight deals from Illinois to Buffalo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Buffalo (average of $98). Flying from Illinois to Buffalo in March is currently the most expensive (average of $257). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Cheektowaga
Amherst
Batavia
Williamsville
Orchard Park
Eden

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Newark flights
San Francisco to John F Kennedy Intl flights
San Francisco to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Dallas/Fort Worth to Newark flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to John F Kennedy Intl flights
O'Hare Intl to Newark flights
Miami to LaGuardia flights
Miami to Newark flights
Los Angeles to LaGuardia flights
Fort Lauderdale to Newark flights
O'Hare Intl to LaGuardia flights
Ontario to John F Kennedy Intl flights
Orlando to Newark flights
Hobby to LaGuardia flights
Orlando to LaGuardia flights
O'Hare Intl to John F Kennedy Intl flights
Atlanta to John F Kennedy Intl flights
Seattle to Newark flights
Miami to John F Kennedy Intl flights
Atlanta to Newark flights
Fort Lauderdale to John F Kennedy Intl flights
Hobby to John F Kennedy Intl flights
Tampa to Newark flights
San Jose to Newark flights
Hobby to Newark flights
Atlanta to LaGuardia flights
San Jose to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
Seattle to John F Kennedy Intl flights
Denver to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
Raleigh to Newark flights
Austin to Newark flights
Austin to John F Kennedy Intl flights
Oakland to John F Kennedy Intl flights
Denver to Newark flights
Detroit to John F Kennedy Intl flights
Detroit to Newark flights
George Bush Intcntl to Newark flights
Tampa to LaGuardia flights
West Palm Beach to John F Kennedy Intl flights
Charlotte to Newark flights
Tampa to John F Kennedy Intl flights
Denver to John F Kennedy Intl flights
Midway to Newark flights

Top 5 airlines flying from Illinois to Buffalo

Discover the top 5 airlines that operate flights from Illinois to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$98Average$254FlexibilityNo cancel feeOn-time62%
FrontierCheapest$132Average$190FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$334FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$206Average$327FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$425FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.