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$90+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUF
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Illinois to Buffalo

Keep the following information in mind while searching for Illinois to Buffalo flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$168
(Frontier)

One-way from

$90
(Booking.com)

Popular in

January

Cheapest in

August

Average price

$356

Good round-trip deal

$280 or less

Good one-way deal

$184 or less
Provider with most accurate pricing for Chicago (CHI)-Buffalo flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Buffalo flights.
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From Illinois to Buffalo
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One-way flight from Illinois to Buffalo
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Highest demand for flights based on searches. 14% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Illinois to Buffalo.
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Price to beat on a one-way flight from Illinois to Buffalo.
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Find 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 March 28, 2025.

This Frontier deal was found by Cheapflights users on 3/27. 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.
Wed 4/162:00 pmORD - BUF
1 stop9h 15mFrontier
Mon 4/212:48 pmBUF - ORD
1 stop10h 35mFrontier
Deal found 3/27$168
This Frontier deal was found by Cheapflights users on 3/27. 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.
Sun 5/1110:55 amMDW - BUF
1 stop6h 33mFrontier
Sun 5/189:51 amBUF - MDW
1 stop8h 39mFrontier
Deal found 3/27$189
This JetBlue Airways deal was found by Cheapflights users on 3/27. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/111:35 pmORD - BUF
1 stop4h 46mJetBlue
Mon 9/1512:15 pmBUF - ORD
1 stop6h 20mJetBlue
Deal found 3/27$213
This Delta deal was found by Cheapflights users on 3/26. 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.
Tue 4/295:05 pmMLI - BUF
1 stop5h 52mDelta
Wed 5/76:35 pmBUF - MLI
1 stop5h 22mDelta
Deal found 3/26$217
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/25:55 pmSTL - BUF
1 stop15h 53mFrontier
Sun 5/49:51 amBUF - STL
1 stop15h 15mFrontier
Deal found 3/27$238
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 4/112:32 pmPIA - BUF
1 stop5h 39mUnited Airlines
Tue 4/155:51 pmBUF - PIA
1 stop4h 42mUnited Airlines
Deal found 3/27$259
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/179:18 amORD - BUF
Nonstop1h 43mAmerican Airlines
Sun 4/2012:44 pmBUF - ORD
Nonstop1h 58mAmerican Airlines
Deal found 3/27$264
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/293:50 pmMLI - BUF
1 stop4h 21mUnited Airlines
Tue 5/611:00 amBUF - MLI
1 stop5h 21mUnited Airlines
Deal found 3/26$269
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 4/296:40 pmMDW - BUF
Nonstop1h 25mSouthwest
Tue 5/67:05 amBUF - MDW
Nonstop1h 40mSouthwest
Deal found 3/27$279
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 5/275:15 pmORD - BUF
1 stop4h 31mDelta
Tue 6/312:05 pmBUF - ORD
1 stop5h 42mDelta
Deal found 3/27$299
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 4/261:28 pmORD - BUF
1 stop4h 20mUnited Airlines
Mon 4/287:00 amBUF - ORD
Nonstop1h 58mUnited Airlines
Deal found 3/26$304
This Delta deal was found by Cheapflights users on 3/28. 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.
Fri 4/253:30 pmSTL - BUF
1 stop6h 32mDelta
Mon 4/286:00 amBUF - STL
1 stop6h 45mDelta
Deal found 3/28$307

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 March 28, 2025.
Use the filters below to find and compare flights from Illinois to Buffalo that are best for you.

Fly from

Illinois

Fly to

Buffalo

Route

Depart

Return

Price

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 4/16

2:00 pm-12:15 am

1 stop9h 15m

Buffalo

Mon 4/21

2:48 pm-12:23 am

1 stop10h 35m

$168

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sun 5/11

10:55 am-6:28 pm

1 stop6h 33m

Buffalo

Sun 5/18

9:51 am-5:30 pm

1 stop8h 39m

$189

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 9/11

1:35 pm-7:21 pm

1 stop4h 46m

Buffalo

Mon 9/15

12:15 pm-5:35 pm

1 stop6h 20m

$213

MolineBuffalo

MLI - BUF

MLIBUF

Moline Quad-City

Tue 4/29

5:05 pm-11:57 pm

1 stop5h 52m

Buffalo

Wed 5/7

6:35 pm-10:57 pm

1 stop5h 22m

$217

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 5/2

5:55 pm-10:48 am

1 stop15h 53m

Buffalo

Sun 5/4

9:51 am-12:06 am

1 stop15h 15m

$238

PeoriaBuffalo

PIA - BUF

PIABUF

Greater Peoria

Fri 4/11

2:32 pm-9:11 pm

1 stop5h 39m

Buffalo

Tue 4/15

5:51 pm-9:33 pm

1 stop4h 42m

$259

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 4/17

9:18 am-12:01 pm

Nonstop1h 43m

Buffalo

Sun 4/20

12:44 pm-1:42 pm

Nonstop1h 58m

$264

MolineBuffalo

MLI - BUF

MLIBUF

Moline Quad-City

Tue 4/29

3:50 pm-9:11 pm

1 stop4h 21m

Buffalo

Tue 5/6

11:00 am-3:21 pm

1 stop5h 21m

$269

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Tue 4/29

6:40 pm-9:05 pm

Nonstop1h 25m

Buffalo

Tue 5/6

7:05 am-7:45 am

Nonstop1h 40m

$279

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 5/27

5:15 pm-10:46 pm

1 stop4h 31m

Buffalo

Tue 6/3

12:05 pm-4:47 pm

1 stop5h 42m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 42 results
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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 $256). Flying from Illinois to Buffalo in December is currently the most expensive (average of $337). 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 March 28, 2025.

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

Rainfall in Buffalo by month

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

In terms of precipitation, rainfall in Buffalo ranges from 2.5 - 4.0 inches per month. November is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Buffalo when rainfall is around 2.5 in.

Temperature in Buffalo by month

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

If weather is an important factor for your trip to Buffalo, 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated March 28, 2025.
To help decide which airline to fly from Illinois to Buffalo, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,923 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

  • 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 $90 on Frontier. Other airlines that offer cheap prices include JetBlue from $104 and American Airlines from $125 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: Copa Airlines (100%), GoJet (91%), Alaska Airlines( 85%).

  • What are the cheapest flights from Illinois to Buffalo?

    While on average a flight from Illinois to Buffalo is generally $273, our data shows the cheapest flight currently is $154. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $187 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 $256). Flying from Illinois to Buffalo in December is currently the most expensive (average of $337). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
West Seneca
Williamsville
Amherst
Batavia
Orchard Park
Cheektowaga

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Alternative routes for Illinois to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Buffalo

Discover the top 4 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$174FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$166Average$365FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$378FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$225Average$355FlexibilityNo cancel feeOn-time63%
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