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$80+ Cheap flights from Chicago (CHI) 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
Apr 1 — Apr 81
Wed 4/1
Wed 4/8
1 adult, Economy
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Find cheap flights from Chicago to Buffalo 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”

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Cheapflights Tip: The best prices from Chicago to Buffalo are usually found in September or August, booked 72 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Chicago to Buffalo

Cheapest flights from Chicago to Buffalo
Explore the most affordable flight options available from Chicago to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:08 pm
ORD
-
BUF
1 stop17h 44m
Frontier
Tue 4/211:56 pm
BUF
-
ORD
1 stop21h 06m
Frontier
Deal found 2/28$153
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:15 pm
MDW
-
BUF
1 stop21h 37m
Frontier
Tue 4/211:56 pm
BUF
-
MDW
1 stop6h 35m
Frontier
Deal found 2/28$155
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:28 pm
ORD
-
BUF
1 stop17h 41m
Frontier
Mon 4/2012:32 pm
BUF
-
ORD
1 stop22h 08m
Frontier
Deal found 3/1$156
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:28 pm
ORD
-
BUF
1 stop17h 45m
Frontier
Tue 4/281:56 pm
BUF
-
ORD
1 stop21h 06m
Frontier
Deal found 2/26$158
This Priceline deal was found by Cheapflights users on 3/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:10 am
MDW
-
BUF
1 stop5h 32m
Frontier
Thu 4/301:08 pm
BUF
-
MDW
1 stop7h 23m
Frontier
Deal found 3/1$160
This Frontier deal was found by Cheapflights users on 2/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:01 am
ORD
-
BUF
1 stop6h 12m
Frontier
Sat 5/91:08 pm
BUF
-
ORD
1 stop10h 31m
Frontier
Deal found 2/26$160
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:15 pm
MDW
-
BUF
1 stop19h 58m
Frontier
Tue 4/281:56 pm
BUF
-
MDW
1 stop9h 18m
Frontier
Deal found 2/27$166
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/302:15 pm
MDW
-
BUF
1 stop20h 08m
Frontier
Sun 5/312:32 pm
BUF
-
MDW
1 stop10h 47m
Frontier
Deal found 2/26$171
This Booking.com deal was found by Cheapflights users on 3/1. 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.
Tue 3/314:18 pm
ORD
-
BUF
1 stop17h 31m
Frontier
Tue 4/71:02 pm
BUF
-
ORD
1 stop10h 37m
Frontier
Deal found 3/1$172
This Frontier deal was found by Cheapflights users on 2/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:01 am
ORD
-
BUF
1 stop6h 12m
Frontier
Sun 5/101:08 pm
BUF
-
ORD
1 stop10h 31m
Frontier
Deal found 2/26$181
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:31 pm
ORD
-
BUF
2 stops16h 21m
Multiple Airlines
Tue 4/211:56 pm
BUF
-
ORD
1 stop21h 06m
Multiple Airlines
Deal found 2/28$188
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:15 pm
MDW
-
BUF
1 stop21h 37m
Frontier
Fri 4/2412:18 pm
BUF
-
MDW
1 stop11h 08m
Frontier
Deal found 2/27$195

Find flight deals from Chicago to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 March 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$153
(Kiwi.com)

One-way from

$80
(Priceline)

Popular in

February

Cheapest in

September

Average price

$379

Good round-trip deal

$312 or less

Good one-way deal

$184 or less
Provider with most accurate pricing for Chicago (CHI)-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Buffalo flights.
Search Deals
From Chicago (CHI) to Buffalo
Search Deals
One-way flight from Chicago (CHI) to Buffalo
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Buffalo.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Buffalo.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 2, 2026.
Use the filters below to find and compare flights from Chicago to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 4/16

2:33 pm-5:16 pm

Nonstop1h 43m

Buffalo

Tue 4/28

5:57 pm-7:00 pm

Nonstop2h 03m

$247

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 4/18

3:35 pm-6:00 pm

Nonstop1h 25m

Buffalo

Mon 4/20

6:00 am-6:40 am

Nonstop1h 40m

$260

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 4/18

6:08 pm-8:49 pm

Nonstop1h 41m

Buffalo

Mon 4/20

7:00 am-7:58 am

Nonstop1h 58m

$260

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Mon 4/20

6:38 pm-10:39 pm

1 stop3h 01m

Buffalo

Thu 4/23

3:53 pm-5:58 pm

1 stop3h 05m

$275

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Thu 4/16

9:15 pm-7:50 am

1 stop9h 35m

Buffalo

Tue 4/28

9:25 am-2:55 pm

2 stops6h 30m

$278

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Tue 4/14

7:50 am-10:20 am

Nonstop1h 30m

Buffalo

Tue 4/21

9:25 am-1:30 pm

1 stop5h 05m

$279

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 3/23

5:40 pm-10:55 pm

1 stop4h 15m

Buffalo

Wed 3/25

6:15 am-9:10 am

1 stop3h 55m

$296

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 3/28

7:00 pm-9:25 pm

Nonstop1h 25m

Buffalo

Mon 3/30

7:30 pm-12:35 am

1 stop6h 05m

$309

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Thu 4/30

7:45 am-10:15 am

Nonstop1h 30m

Buffalo

Sun 5/3

12:25 pm-1:05 pm

Nonstop1h 40m

$312

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 4/18

1:55 pm-11:25 pm

2 stops8h 30m

Buffalo

Mon 4/20

5:45 am-12:50 pm

2 stops8h 05m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 39 resultsSorted by cheapest first
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Compare providers for flights from Chicago to Buffalo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Buffalo in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Buffalo flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Buffalo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Buffalo

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

How far ahead should I book a flight from Chicago to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Buffalo. Price data was last updated on February 27, 2026.

The best time to book flights from Chicago to Buffalo is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $98). Flying from Chicago to Buffalo in March is currently the most expensive (average of $247). 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 CHI to BUF?

Find hourly flight availability from Chicago 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 2, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 10% on flights from Chicago to Buffalo by exploring options for tickets in the evening.

What is the cheapest day to fly from Chicago to Buffalo?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Buffalo. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Chicago to Buffalo flight should consider departing on Saturday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Buffalo

Explore weekly flight availability from Chicago 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 March 2, 2026.

The most flights from CHI to BUF are scheduled on a Monday (27 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost to fly round-trip from Chicago to Buffalo?

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 2, 2026.
Read through reviews of airlines operating flights from Chicago to Buffalo, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,306 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.
Southwest
8.0
Very good
4,306 reviews
Southwest
8.0
Very good
4,306 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.
United Airlines
7.4
Good
9,376 reviews
Southwest
8.0
Very good
4,306 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.
American Airlines
7.1
Good
11,369 reviews
Southwest
8.0
Very good
4,306 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.
Frontier
5.7
Fair
3,040 reviews
Southwest
8.0
Very good
4,306 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2026

DEN - BDL

Weird they cancelled a direct and rerouted me on a connecting flight to get in 10 hours later. What was the point? Crew and flight were great, but not sure what's going on with Southwest.

Related info for your journey

Find useful and relevant information for your journey from Chicago 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 Chicago?

    Located just 8.3 mi from the city center, Buffalo is the airport most travelers will use when flying to Buffalo from Chicago. Booking flights from Chicago to Buffalo (BUF) should be relatively easy as there are 20 daily inbound flights from Chicago from 4 different airlines.

  • How long is the flight from Chicago to Buffalo?

    United Airlines, Southwest, and Delta can get you from Chicago to Buffalo in just under 1h 25m. Your travel time can differ by up to 1h 36m. There are 466 mi between Chicago and Buffalo. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Chicago to Buffalo round-trip?

    Flying on Frontier is currently your cheapest option to Buffalo, with prices starting at $132. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $177 and $197, respectively. Frontier is currently priced 62% below the average price you’ll pay for this route.

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

    $110 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $118 and $120, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Buffalo on time: Republic Airways (81%), Iberia (81%), British Airways (78%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $326 for a flight from Chicago to Buffalo. The cheapest flight overall is $164 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $171.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $98). Flying from Chicago to Buffalo in March is currently the most expensive (average of $247). 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 Buffalo?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Chicago to Buffalo

Discover the top 4 airlines that operate flights from Chicago 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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$299FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$347FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$405FlexibilityNo cancel feeOn-time63%

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