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$55+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUF
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$130
(Frontier)

One-way from

$55
(Frontier)

Popular in

January

Cheapest in

August

Average price

$395

Good round-trip deal

$256 or less

Good one-way deal

$174 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
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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.
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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 February 22, 2025.

This Frontier deal was found by Cheapflights users on 2/20. 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.
Mon 4/141:10 pmMDW - BUF
1 stop10h 05mFrontier
Tue 4/155:37 pmBUF - MDW
1 stop6h 47mFrontier
Deal found 2/20$130
This Mytrip deal was found by Cheapflights users on 2/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/119:25 amORD - BUF
1 stop23h 59mFrontier
Sat 3/152:52 pmBUF - ORD
1 stop6h 20mFrontier
Deal found 2/21$138
This Booking.com deal was found by Cheapflights users on 2/22. 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.
Sat 5/105:47 pmSTL - BUF
1 stop14h 14mFrontier
Tue 5/139:51 amBUF - STL
1 stop15h 15mFrontier
Deal found 2/22$190
This JetBlue deal was found by Cheapflights users on 2/21. 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.
Tue 4/11:24 pmORD - BUF
1 stop7h 32mJetBlue
Wed 4/306:00 amBUF - ORD
1 stop7h 17mJetBlue
Deal found 2/21$213
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/146:50 pmORD - BUF
Nonstop1h 45mAmerican Airlines
Tue 4/1512:38 pmBUF - ORD
1 stop9h 02mAmerican Airlines
Deal found 2/20$265
This American Airlines deal was found by Cheapflights users on 2/22. 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 3/186:00 amMLI - BUF
1 stop3h 49mAmerican Airlines
Tue 3/2511:19 amBUF - MLI
1 stop5h 33mAmerican Airlines
Deal found 2/22$269
This United Airlines deal was found by Cheapflights users on 2/22. 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 3/1810:59 amMLI - BUF
2 stops11h 29mUnited Airlines
Wed 3/265:52 pmBUF - MLI
1 stop4h 38mUnited Airlines
Deal found 2/22$274
This Southwest deal was found by Cheapflights users on 2/21. 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.
Thu 3/139:30 pmMDW - BUF
Nonstop1h 25mSouthwest
Mon 3/177:55 amBUF - MDW
Nonstop1h 50mSouthwest
Deal found 2/21$277
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 4/72:12 pmORD - BUF
Nonstop1h 43mUnited Airlines
Mon 4/1410:54 amBUF - ORD
Nonstop2h 00mUnited Airlines
Deal found 2/22$277
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Sat 3/224:26 pmSTL - BUF
1 stop4h 56mAmerican Airlines
Wed 3/266:00 amBUF - STL
1 stop9h 48mAmerican Airlines
Deal found 2/21$285
This Delta deal was found by Cheapflights users on 2/21. 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 3/116:50 amSTL - BUF
1 stop4h 20mDelta
Tue 3/115:48 pmBUF - STL
1 stop4h 52mDelta
Deal found 2/21$287
This Southwest deal was found by Cheapflights users on 2/22. 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.
Sat 5/106:20 amSTL - BUF
1 stop10h 30mSouthwest
Tue 5/132:55 pmBUF - STL
2 stops7h 55mSouthwest
Deal found 2/22$298

Find flights from Illinois to Buffalo within your budget

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 February 22, 2025.

Fly from

Illinois

Fly to

Buffalo

Route

Depart

Return

Price

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Mon 4/14

1:10 pm-12:15 am

1 stop10h 05m

Buffalo

Tue 4/15

5:37 pm-11:24 pm

1 stop6h 47m

$130

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 3/11

9:25 am-10:24 am

1 stop23h 59m

Buffalo

Sat 3/15

2:52 pm-8:12 pm

1 stop6h 20m

$138

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 5/10

5:47 pm-9:01 am

1 stop14h 14m

Buffalo

Tue 5/13

9:51 am-12:06 am

1 stop15h 15m

$190

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 4/1

1:24 pm-9:56 pm

1 stop7h 32m

Buffalo

Wed 4/30

6:00 am-12:17 pm

1 stop7h 17m

$213

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 4/14

6:50 pm-9:35 pm

Nonstop1h 45m

Buffalo

Tue 4/15

12:38 pm-8:40 pm

1 stop9h 02m

$265

MolineBuffalo

MLI - BUF

MLIBUF

Moline Quad-City

Tue 3/18

6:00 am-10:49 am

1 stop3h 49m

Buffalo

Tue 3/25

11:19 am-3:52 pm

1 stop5h 33m

$269

MolineBuffalo

MLI - BUF

MLIBUF

Moline Quad-City

Tue 3/18

10:59 am-11:28 pm

2 stops11h 29m

Buffalo

Wed 3/26

5:52 pm-9:30 pm

1 stop4h 38m

$274

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Thu 3/13

9:30 pm-11:55 pm

Nonstop1h 25m

Buffalo

Mon 3/17

7:55 am-8:45 am

Nonstop1h 50m

$277

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 4/7

2:12 pm-4:55 pm

Nonstop1h 43m

Buffalo

Mon 4/14

10:54 am-11:54 am

Nonstop2h 00m

$277

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 3/22

4:26 pm-10:22 pm

1 stop4h 56m

Buffalo

Wed 3/26

6:00 am-2:48 pm

1 stop9h 48m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 36 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.

Travel insights for flights from Illinois to Buffalo

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

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 February 22, 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.

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 February 22, 2025.

The most flights from USIL to BUF are scheduled on a Friday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

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 February 22, 2025.
To help decide which airline to fly from Illinois to Buffalo, see what other customers have to say about Southwest, Delta and JetBlue. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,068 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $55 on Frontier. Other airlines that offer cheap prices include JetBlue from $94 and American Airlines from $127 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: SkyWest Airlines (100%), Copa Airlines (100%), GoJet( 89%).

  • What are the cheapest flights from Illinois to Buffalo?

    While on average a flight from Illinois to Buffalo is generally $299, our data shows the cheapest flight currently is $138. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $215 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$174FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$148Average$357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$380FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$225Average$390FlexibilityNo cancel feeOn-time63%
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