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 $56 on Frontier. Other airlines that offer cheap prices include JetBlue from $102 and Southwest from $109 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 cheapest flights from Illinois to Buffalo?

While on average a flight from Illinois to Buffalo is generally $343, our data shows the cheapest flight currently is $68. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $192 for that flight.

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%), United Airlines (93%), Copa Airlines( 92%).

What are the most popular airlines that fly from Illinois to Buffalo?

Before booking your flight from Illinois to Buffalo check out the most popular airlines for this route: American Airlines, Frontier or United Airlines.

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

To save on the cost of your flight from Illinois to Buffalo, book at least 44 days before your planned departure. Booking around this time can save you about 182% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $255 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $609.

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

August is one of the best times of the year to fly to Buffalo from Illinois. Prices for August average $342 per person but you can even find prices for as low as $136. The most expensive prices can be found in the month of January. Opting for a August flight can save you 30% on your journey compared to booking in January

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.

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.

$56+ Flights from Illinois to Buffalo

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Cheap flight deals from Illinois to Buffalo

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$214 (Booking.com)
One-way from	$56 (Trip.com)
Popular in	January
Cheapest in	August
Average price	$333
Good round-trip deal	$249 or less
Good one-way deal	$80 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. 14% potential increase in price ($57 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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 mayo 28, 2025.

sáb. 9/277:52 pmSTL - BUF

1 stop15h 51mFrontier

dom. 9/289:45 pmBUF - STL

1 stop16h 32mFrontier

Deal found 5/28

$214

mié. 10/88:00 amORD - BUF

1 stop23h 53mFrontier

sáb. 10/119:45 pmBUF - ORD

1 stop20h 19mFrontier

Deal found 5/28

$216

jue. 7/310:00 pmMDW - BUF

Nonstop1h 25mSouthwest

lun. 7/78:30 pmBUF - MDW

Nonstop1h 40mSouthwest

Deal found 5/27

$217

lun. 6/307:15 amORD - BUF

Nonstop1h 39mUnited Airlines

vie. 7/410:50 amBUF - ORD

Nonstop1h 55mUnited Airlines

Deal found 5/27

$217

mar. 7/87:25 pmORD - BUF

Nonstop1h 43mAmerican Airlines

sáb. 7/268:02 amBUF - ORD

Nonstop1h 54mAmerican Airlines

Deal found 5/27

$218

jue. 6/129:12 pmMDW - BUF

1 stop9h 38mFrontier

sáb. 6/141:14 pmBUF - MDW

1 stop10h 14mFrontier

Deal found 5/28

$220

lun. 9/296:00 amMDW - BUF

1 stop7h 30mDelta

mar. 9/306:30 amBUF - MDW

1 stop3h 15mDelta

Deal found 5/28

$237

sáb. 7/53:45 pmORD - BUF

1 stop7h 06mDelta

mié. 7/96:00 amBUF - ORD

1 stop5h 10mDelta

Deal found 5/28

$237

mié. 6/1810:05 amPIA - BUF

1 stop5h 05mAmerican Airlines

dom. 6/225:10 amBUF - PIA

1 stop5h 25mAmerican Airlines

Deal found 5/27

$249

jue. 12/252:20 pmORD - BUF

1 stop6h 11mJetBlue

jue. 1/17:45 amBUF - ORD

1 stop6h 38mJetBlue

Deal found 5/28

$260

jue. 7/36:21 pmORD - BUF

1 stop15h 11mMultiple Airlines

mié. 7/95:12 pmBUF - ORD

1 stop7h 58mMultiple Airlines

Deal found 5/27

$265

lun. 6/306:00 amSTL - BUF

1 stop5h 06mAmerican Airlines

mié. 7/25:31 amBUF - STL

1 stop4h 55mAmerican Airlines

Deal found 5/27

$267

Best flights from Illinois to Buffalo
Discover carefully curated flight deals from Illinois to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mayo 28, 2025.

sáb. 9/277:52 pmSTL - BUF

1 stop15h 51mFrontier

dom. 9/289:45 pmBUF - STL

1 stop16h 32mFrontier

Deal found 5/28

$214

jue. 7/310:00 pmMDW - BUF

Nonstop1h 25mSouthwest

lun. 7/78:30 pmBUF - MDW

Nonstop1h 40mSouthwest

Deal found 5/27

$217

lun. 6/307:15 amORD - BUF

Nonstop1h 39mUnited Airlines

vie. 7/410:50 amBUF - ORD

Nonstop1h 55mUnited Airlines

Deal found 5/27

$217

mar. 7/87:25 pmORD - BUF

Nonstop1h 43mAmerican Airlines

sáb. 7/268:02 amBUF - ORD

Nonstop1h 54mAmerican Airlines

Deal found 5/27

$218

lun. 9/296:00 amMDW - BUF

1 stop7h 30mDelta

mar. 9/306:30 amBUF - MDW

1 stop3h 15mDelta

Deal found 5/28

$237

mar. 6/178:40 amORD - BUF

1 stop7h 12mJetBlue

mar. 6/248:10 amBUF - ORD

1 stop8h 43mJetBlue

Deal found 5/27

$263

jue. 7/36:21 pmORD - BUF

1 stop15h 11mMultiple Airlines

mié. 7/95:12 pmBUF - ORD

1 stop7h 58mMultiple Airlines

Deal found 5/27

$265

jue. 7/36:21 pmORD - BUF

1 stop15h 11mSun Country Air

lun. 7/711:53 amBUF - ORD

1 stop6h 28mSun Country Air

Deal found 5/27

$285

jue. 6/129:12 pmMDW - BUF

1 stop9h 38mFrontier

sáb. 6/141:14 pmBUF - MDW

1 stop10h 14mFrontier

Deal found 5/28

$220

sáb. 7/55:05 pmORD - BUF

1 stop4h 18mDelta

vie. 7/117:45 pmBUF - ORD

1 stop5h 24mDelta

Deal found 5/27

$237

jue. 6/125:01 amORD - BUF

1 stop6h 11mFrontier

dom. 6/159:51 amBUF - ORD

1 stop8h 07mFrontier

Deal found 5/28

$220

mié. 6/1810:05 amPIA - BUF

1 stop5h 05mAmerican Airlines

dom. 6/225:10 amBUF - PIA

1 stop5h 25mAmerican Airlines

Deal found 5/27

$249

Last-minute flights from Illinois to Buffalo
Discover last-minute flight deals from Illinois to Buffalo. Data last updated mayo 28, 2025 and is based on user searches.

mar. 6/310:35 amORD - BUF

Nonstop1h 46mUnited Airlines

mié. 6/111:57 pmBUF - ORD

Nonstop1h 58mUnited Airlines

Deal found 5/26

$494

mar. 6/35:12 pmORD - BUF

1 stop4h 33mAmerican Airlines

mar. 6/105:10 amBUF - ORD

Nonstop1h 49mAmerican Airlines

Deal found 5/26

$510

mar. 6/35:58 pmORD - BUF

1 stop4h 57mDelta

mar. 6/105:45 pmBUF - ORD

1 stop5h 36mDelta

Deal found 5/26

$528

mié. 6/45:03 pmORD - BUF

1 stop14h 53mFrontier

mié. 6/114:49 pmBUF - ORD

1 stop23h 21mFrontier

Deal found 5/26

$234

mié. 6/46:15 amORD - BUF

1 stop6h 38mJetBlue

sáb. 6/73:05 pmBUF - ORD

1 stop7h 49mJetBlue

Deal found 5/27

$323

mié. 6/41:50 pmORD - BUF

1 stop4h 05mSouthwest

mar. 6/101:00 pmBUF - ORD

2 stops9h 30mSouthwest

Deal found 5/26

$503

jue. 6/510:00 pmMDW - BUF

Nonstop1h 25mSouthwest

dom. 6/88:35 pmBUF - MDW

Nonstop1h 40mSouthwest

Deal found 5/28

$551

vie. 6/69:12 pmMDW - BUF

1 stop13h 07mFrontier

dom. 6/81:14 pmBUF - MDW

1 stop11h 04mFrontier

Deal found 5/28

$220

vie. 6/65:40 pmSTL - BUF

1 stop5h 15mDelta

sáb. 6/76:30 amBUF - STL

1 stop4h 05mDelta

Deal found 5/27

$527

vie. 6/65:00 amSTL - BUF

1 stop8h 20mSouthwest

sáb. 6/76:00 amBUF - STL

2 stops8h 25mSouthwest

Deal found 5/27

$532

sáb. 6/75:15 pmMLI - BUF

1 stop5h 41mDelta

mar. 6/105:10 pmBUF - MLI

1 stop6h 39mDelta

Deal found 5/27

$284

sáb. 6/75:45 amMLI - BUF

2 stops9h 31mAmerican Airlines

mar. 6/101:38 pmBUF - MLI

2 stops9h 31mAmerican Airlines

Deal found 5/27

$388

One-way flights from Illinois to Buffalo
Search for one-way flight options from Illinois to Buffalo. Find affordable one-way fares based on user searches. Data last updated mayo 28, 2025.

jue. 7/174:37 pmORD - BUF

1 stop14h 10mFrontier

Deal found 5/28

$56

vie. 8/225:30 amMDW - BUF

1 stop7h 57mFrontier

Deal found 5/28

$98

mar. 9/166:45 amORD - BUF

1 stop7h 15mJetBlue

Deal found 5/28

$102

mié. 6/115:35 pmSTL - BUF

1 stop14h 21mFrontier

Deal found 5/27

$107

dom. 6/299:15 amMDW - BUF

Nonstop1h 30mSouthwest

Deal found 5/28

$109

sáb. 6/288:39 pmORD - BUF

Nonstop1h 50mAmerican Airlines

Deal found 5/27

$109

lun. 7/145:00 pmORD - BUF

1 stop5h 44mDelta

Deal found 5/28

$119

mar. 7/14:26 pmMDW - BUF

1 stop6h 25mDelta

Deal found 5/28

$135

mar. 7/152:10 pmORD - BUF

Nonstop1h 45mUnited Airlines

Deal found 5/28

$143

jue. 8/72:55 pmORD - BUF

2 stops7h 10mSouthwest

Deal found 5/28

$167

sáb. 7/267:30 amSTL - BUF

1 stop6h 10mAmerican Airlines

Deal found 5/27

$174

sáb. 7/266:33 amSTL - BUF

2 stops6h 39mUnited Airlines

Deal found 5/27

$179

Cheapflights Fare Finder

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

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

sáb. 9/27

7:52 pm-12:43 pm

1 stop15h 51m

Buffalo

dom. 9/28

9:45 pm-1:17 pm

1 stop16h 32m

$214

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

jue. 7/3

10:00 pm-12:25 am

Nonstop1h 25m

Buffalo

lun. 7/7

8:30 pm-9:10 pm

Nonstop1h 40m

$217

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

lun. 6/30

7:15 am-9:54 am

Nonstop1h 39m

Buffalo

vie. 7/4

10:50 am-11:45 am

Nonstop1h 55m

$217

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mar. 7/8

7:25 pm-10:08 pm

Nonstop1h 43m

Buffalo

sáb. 7/26

8:02 am-8:56 am

Nonstop1h 54m

$218

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

jue. 6/12

9:12 pm-7:50 am

1 stop9h 38m

Buffalo

sáb. 6/14

1:14 pm-10:28 pm

1 stop10h 14m

$220

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

jue. 6/12

5:01 am-12:12 pm

1 stop6h 11m

Buffalo

dom. 6/15

9:51 am-4:58 pm

1 stop8h 07m

$220

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

lun. 9/29

6:00 am-2:30 pm

1 stop7h 30m

Buffalo

mar. 9/30

6:30 am-8:45 am

1 stop3h 15m

$237

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

sáb. 7/5

5:05 pm-10:23 pm

1 stop4h 18m

Buffalo

vie. 7/11

7:45 pm-12:09 am

1 stop5h 24m

$237

PeoriaBuffalo

PIA - BUF

PIABUF

Greater Peoria

mié. 6/18

10:05 am-4:10 pm

1 stop5h 05m

Buffalo

dom. 6/22

5:10 am-9:35 am

1 stop5h 25m

$249

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mar. 6/17

8:40 am-4:52 pm

1 stop7h 12m

Buffalo

mar. 6/24

8:10 am-3:53 pm

1 stop8h 43m

$263

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 45 results

...

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?

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

The most flights from USIL to BUF are scheduled on a Monday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

Rainfall in Buffalo 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

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

To help decide which airline to fly from Illinois to Buffalo, see what other customers have to say about Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,287 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,957 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,756 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

JetBlue

7.3

Good

2,927 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

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 $56 on Frontier. Other airlines that offer cheap prices include JetBlue from $102 and Southwest from $109 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%), United Airlines (93%), Copa Airlines( 92%).
What are the cheapest flights from Illinois to Buffalo?
While on average a flight from Illinois to Buffalo is generally $343, our data shows the cheapest flight currently is $68. When looking at the most popular route, (Chicago O'Hare Intl - Buffalo), you can expect to pay $192 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

Williamsville

Amherst

Orchard Park

Batavia

Eden

Cheektowaga

West Seneca

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Top 4 airlines flying from Illinois to Buffalo

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$101	Average$190	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$166	Average$325	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$198	Average$359	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$225	Average$355	FlexibilityNo cancel fee	On-time63%

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$56+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Buffalo with Cheapflights

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3. Compare prices and book

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 mayo 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Buffalo

Cheapest flights from Illinois to BuffaloExplore 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 mayo 28, 2025.

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 mayo 28, 2025.

Cheapflights Fare Finder

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

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.

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?

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 mayo 28, 2025.

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 mayo 28, 2025.

Rainfall in Buffalo by month

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

Temperature in Buffalo by month

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

Reviews of airlines servicing Buffalo

To help decide which airline to fly from Illinois to Buffalo, see what other customers have to say about Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the most popular routes from Illinois to Buffalo?

What are the most reliable airlines from Illinois to Buffalo?

What are the cheapest flights from Illinois to Buffalo?

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

How can I find direct flights from Illinois to Buffalo?

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

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

Traveling to a place near Illinois?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Buffalo

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Top 4 airlines flying from Illinois to Buffalo

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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 mayo 28, 2025.