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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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUF
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Buffalo (BUF). 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 January 21, 2025.

Round-trip from

$112
(Frontier)

One-way from

$55
(Frontier)

Good round-trip deal

$327 or less

Good one-way deal

$170 or less
From Illinois to Buffalo
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One-way 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 January 21, 2025.

This Frontier deal was found by Cheapflights users on 1/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1010:36 amSTL - BUF
1 stop22h 48mFrontier
Mon 3/175:20 pmBUF - STL
1 stop7h 29mFrontier
Deal found 1/21$112
This Flightnetwork deal was found by Cheapflights users on 1/20. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/46:20 amORD - BUF
1 stop10h 09mFrontier
Tue 3/114:58 pmBUF - ORD
1 stop18h 59mFrontier
Deal found 1/20$112
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/73:37 pmMDW - BUF
1 stop17h 22mFrontier
Sun 2/98:17 pmBUF - MDW
1 stop19h 45mFrontier
Deal found 1/20$140
This JetBlue deal was found by Cheapflights users on 1/21. 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.
Wed 3/511:44 amORD - BUF
1 stop5h 18mJetBlue
Wed 3/1212:15 pmBUF - ORD
1 stop5h 15mJetBlue
Deal found 1/21$187
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/53:36 pmPIA - BUF
1 stop4h 34mUnited Airlines
Sun 2/97:00 amBUF - PIA
1 stop4h 19mUnited Airlines
Deal found 1/20$229
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/53:59 pmMLI - BUF
1 stop4h 11mUnited Airlines
Sun 2/97:00 amBUF - MLI
1 stop4h 18mUnited Airlines
Deal found 1/21$229
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/172:05 pmORD - BUF
Nonstop1h 35mUnited Airlines
Wed 2/195:36 pmBUF - ORD
Nonstop2h 02mUnited Airlines
Deal found 1/21$277
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Wed 3/55:45 pmORD - BUF
Nonstop1h 34mAmerican Airlines
Wed 3/1211:19 amBUF - ORD
Nonstop1h 57mAmerican Airlines
Deal found 1/21$278
This Delta deal was found by Cheapflights users on 1/20. 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.
Tue 2/45:00 pmSTL - BUF
1 stop5h 57mDelta
Sat 2/82:12 pmBUF - STL
1 stop5h 32mDelta
Deal found 1/20$287
This Southwest deal was found by Cheapflights users on 1/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1910:30 amMDW - BUF
1 stop6h 50mSouthwest
Mon 2/246:20 amBUF - MDW
Nonstop2h 00mSouthwest
Deal found 1/20$287
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/45:15 pmSTL - BUF
1 stop5h 15mUnited Airlines
Sat 2/811:50 amBUF - STL
2 stops9h 12mUnited Airlines
Deal found 1/20$292
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/43:10 pmSTL - BUF
2 stops6h 39mAmerican Airlines
Sat 2/81:30 pmBUF - STL
2 stops8h 11mAmerican Airlines
Deal found 1/20$297

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 3/10

10:36 am-10:24 am

1 stop22h 48m

Buffalo

Mon 3/17

5:20 pm-11:49 pm

1 stop7h 29m

$112

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 3/4

6:20 am-5:29 pm

1 stop10h 09m

Buffalo

Tue 3/11

4:58 pm-10:57 am

1 stop18h 59m

$112

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Fri 2/7

3:37 pm-9:59 am

1 stop17h 22m

Buffalo

Sun 2/9

8:17 pm-3:02 pm

1 stop19h 45m

$140

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 3/5

11:44 am-6:02 pm

1 stop5h 18m

Buffalo

Wed 3/12

12:15 pm-4:30 pm

1 stop5h 15m

$187

PeoriaBuffalo

PIA - BUF

PIABUF

Greater Peoria

Wed 2/5

3:36 pm-9:10 pm

1 stop4h 34m

Buffalo

Sun 2/9

7:00 am-10:19 am

1 stop4h 19m

$229

MolineBuffalo

MLI - BUF

MLIBUF

Moline Quad-City

Wed 2/5

3:59 pm-9:10 pm

1 stop4h 11m

Buffalo

Sun 2/9

7:00 am-10:18 am

1 stop4h 18m

$229

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 3/3

7:05 pm-9:51 pm

Nonstop1h 46m

Buffalo

Thu 3/6

7:45 am-8:42 am

Nonstop1h 57m

$277

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 2/19

10:36 am-1:16 pm

Nonstop1h 40m

Buffalo

Sat 2/22

1:55 pm-2:54 pm

Nonstop1h 59m

$279

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 2/4

5:00 pm-11:57 pm

1 stop5h 57m

Buffalo

Sat 2/8

2:12 pm-6:44 pm

1 stop5h 32m

$287

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Wed 2/19

10:30 am-6:20 pm

1 stop6h 50m

Buffalo

Mon 2/24

6:20 am-7:20 am

Nonstop2h 00m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 44 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 January 21, 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 January 21, 2025.

The most flights from USIL to BUF are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 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 January 21, 2025.
To help decide which airline to fly from Illinois to Buffalo, see what other customers have to say about United Airlines, Southwest and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,200 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 Southwest from $139 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: GoJet (83%), Air Canada (81%), Air New Zealand( 81%).

  • What are the cheapest flights from Illinois to Buffalo?

    While on average a flight from Illinois to Buffalo is generally $314, our data shows the cheapest flight currently is $133. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $152 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$174FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$145Average$353FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$377FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$225Average$390FlexibilityNo cancel feeOn-time63%
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