HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$54+ Cheap flights from Buffalo (BUF) to Illinois

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Buffalo to Illinois 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 Buffalo to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Find flight deals from Buffalo to Illinois

Cheapest flights from Buffalo to Illinois
Explore the most affordable flight options available from Buffalo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This JetBlue deal was found by Cheapflights users on 11/19. 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 12/1110:10 amBUF - ORD
1 stop6h 43mJetBlue
Mon 12/168:51 amORD - BUF
1 stop7h 48mJetBlue
Deal found 11/19$186
This Frontier deal was found by Cheapflights users on 11/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:02 pmBUF - ORD
1 stop6h 49mFrontier
Mon 12/910:59 amORD - BUF
1 stop6h 56mFrontier
Deal found 11/20$198
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/511:54 amBUF - MDW
1 stop24h 47mFrontier
Sun 12/810:58 amMDW - BUF
1 stop8h 17mFrontier
Deal found 11/19$228
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/176:19 pmBUF - ORD
Nonstop2h 10mAmerican Airlines
Wed 1/159:00 amORD - BUF
Nonstop1h 46mAmerican Airlines
Deal found 11/19$237
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/186:50 pmBUF - MDW
Nonstop1h 45mSouthwest
Tue 12/246:30 pmMDW - BUF
Nonstop1h 25mSouthwest
Deal found 11/19$238
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/177:00 amBUF - ORD
Nonstop1h 57mUnited Airlines
Tue 12/246:20 pmORD - BUF
Nonstop1h 41mUnited Airlines
Deal found 11/19$245
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/910:30 amBUF - STL
1 stop13h 54mFrontier
Thu 12/125:02 pmSTL - BUF
1 stop24h 20mFrontier
Deal found 11/19$248
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/186:25 amBUF - ORD
1 stop3h 59mDelta
Wed 12/255:30 pmORD - BUF
1 stop4h 33mDelta
Deal found 11/19$256
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/186:10 amBUF - ORD
1 stop8h 50mSouthwest
Tue 12/2411:25 amORD - BUF
2 stops9h 50mSouthwest
Deal found 11/19$261
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/137:16 amBUF - STL
1 stop4h 55mAmerican Airlines
Mon 12/165:05 amSTL - BUF
1 stop4h 41mAmerican Airlines
Deal found 11/19$286
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1912:21 pmBUF - STL
1 stop7h 01mDelta
Wed 1/16:29 amSTL - BUF
1 stop3h 46mDelta
Deal found 11/20$311
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:10 amBUF - MDW
1 stop3h 40mDelta
Tue 1/145:07 pmMDW - BUF
1 stop5h 51mDelta
Deal found 11/20$312

Find flights from Buffalo to Illinois within your budget

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, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Fri 2/7

9:06 am-11:31 pm

1 stop15h 25m

Lambert-St Louis

Sun 2/9

8:22 am-9:41 am

1 stop24h 19m

$137

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 12/11

10:10 am-3:53 pm

1 stop6h 43m

Chicago O'Hare Intl

Mon 12/16

8:51 am-5:39 pm

1 stop7h 48m

$186

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 1/13

12:08 pm-10:23 pm

1 stop11h 15m

Chicago O'Hare Intl

Thu 1/16

10:33 am-8:16 am

1 stop20h 43m

$188

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 12/5

11:54 am-11:41 am

1 stop24h 47m

Chicago Midway

Sun 12/8

10:58 am-8:15 pm

1 stop8h 17m

$228

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 12/17

6:19 pm-7:29 pm

Nonstop2h 10m

Chicago O'Hare Intl

Wed 1/15

9:00 am-11:46 am

Nonstop1h 46m

$237

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 12/18

6:50 pm-7:35 pm

Nonstop1h 45m

Chicago Midway

Tue 12/24

6:30 pm-8:55 pm

Nonstop1h 25m

$238

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 12/17

7:00 am-7:57 am

Nonstop1h 57m

Chicago O'Hare Intl

Tue 12/24

6:20 pm-9:01 pm

Nonstop1h 41m

$245

BuffaloMoline

BUF - MLI

BUFMLI

Buffalo

Tue 5/13

5:50 pm-8:58 pm

1 stop4h 08m

Moline Quad-City

Sat 5/17

3:52 pm-8:31 pm

1 stop3h 39m

$248

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/14

5:49 pm-8:53 pm

1 stop4h 04m

Chicago O'Hare Intl

Wed 1/15

7:30 am-1:36 pm

1 stop5h 06m

$256

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 12/12

7:45 am-2:00 pm

1 stop7h 15m

Chicago O'Hare Intl

Tue 12/17

11:25 am-8:30 pm

2 stops8h 05m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 30 results
1
2
3

Best time to book a flight from Buffalo to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Buffalo 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.

Travel insights for flights from Buffalo to Illinois

Get recent, data-driven insights about flights from Buffalo to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Buffalo to Illinois (average of $232). Flying from Buffalo to Illinois in June is currently the most expensive (average of $308). 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 BUF to IL?

Find hourly flight availability from Buffalo to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buffalo to Illinois as you normally would.

Weekly flight availability from Buffalo to Illinois

Explore weekly flight availability from Buffalo to Illinois. 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 November 20, 2024.

The most flights from BUF to USIL are scheduled on a Wednesday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated November 20, 2024.
Get a feel of what it's like to fly with JetBlue, American Airlines and United Airlines from Buffalo to Illinois by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,394 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Illinois. 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 from for flights from Buffalo to Illinois?

    Most people fly from Buffalo (BUF) if they book a flight from Buffalo to Illinois. Buffalo is conveniently located just 8.3 mi from Buffalo’s city center.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $54. Users have also found prices from $93 and $119 on JetBlue and Southwest, respectively.

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

    When deciding which route to take from Buffalo to Illinois consider Buffalo - Chicago O'Hare Intl, Buffalo - Chicago Midway or Buffalo - Lambert-St Louis as they are the most popular.

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

    Consider SkyWest Airlines (100%), Copa Airlines (100%) or Avianca (100%) when booking your flight. These represent the most reliable airlines when flying from Buffalo to Illinois.

  • What are the cheapest flights from Buffalo to Illinois?

    The cheapest flight price from Buffalo to Illinois is $133. On average you can expect to pay $1,126. The most popular route, (Buffalo - Chicago O'Hare Intl), can usually be booked for $142.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo to Illinois 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 Buffalo to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Buffalo to Illinois (average of $232). Flying from Buffalo to Illinois in June is currently the most expensive (average of $308). 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

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 Buffalo to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Fort Lauderdale flights
LaGuardia to Miami flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
Newark to Miami flights
John F Kennedy Intl to Orlando flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
Newark to Orlando flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Fort Lauderdale flights
LaGuardia to Orlando flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
John F Kennedy Intl to Atlanta flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to West Palm Beach flights
LaGuardia to Los Angeles flights
LaGuardia to Atlanta flights
Newark to Las Vegas flights
Newark to San Francisco flights
John F Kennedy Intl to O'Hare Intl flights
Newark to Tampa flights
John F Kennedy Intl to Denver flights
John F Kennedy Intl to Seattle flights
Newark to Hobby flights
Newark to Atlanta flights
LaGuardia to Hobby flights
LaGuardia to O'Hare Intl flights
LaGuardia to Denver flights
Newark to Seattle flights
Newark to West Palm Beach flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to Sky Harbor Intl flights
LaGuardia to Tampa flights
John F Kennedy Intl to Tampa flights
John F Kennedy Intl to Salt Lake City flights
Newark to O'Hare Intl flights
LaGuardia to West Palm Beach flights
Newark to Sky Harbor Intl flights
Newark to Salt Lake City flights
Newark to Santa Ana flights
John F Kennedy Intl to Hobby flights
John F Kennedy Intl to Charlotte flights
Newark to George Bush Intcntl flights
John F Kennedy Intl to New Orleans flights
LaGuardia to San Francisco flights
Newark to Denver flights
John F Kennedy Intl to Austin flights

Top 6 airlines flying from Buffalo to Illinois

Discover the top 6 airlines that operate flights from Buffalo to Illinois. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$95Average$193FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$142Average$405FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$169Average$316FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$175Average$190FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$247Average$315FlexibilityNo cancel feeOn-time63%
DeltaCheapest$256Average$457FlexibilityNo cancel feeOn-timeN/A
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.
View all available airlines