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$70+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
Apr 28 — May 51
Tue 4/28
Tue 5/5
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”

2. Select your favorite providers

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3. Compare prices and book

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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 29, 2026.

This Frontier deal was found by Cheapflights users on 3/25. 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.
Sat 4/255:50 am
ORD
-
BUF
1 stop5h 23m
Frontier
Mon 5/412:32 pm
BUF
-
ORD
1 stop11h 07m
Frontier
Deal found 3/25$140
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:50 am
ORD
-
BUF
1 stop5h 23m
Frontier
Sun 4/268:18 pm
BUF
-
ORD
1 stop27h 43m
Frontier
Deal found 3/27$141
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/236:00 am
MDW
-
BUF
1 stop28h 23m
Frontier
Thu 4/301:08 pm
BUF
-
MDW
1 stop10h 11m
Frontier
Deal found 3/24$147
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/234:28 pm
ORD
-
BUF
1 stop17h 55m
Frontier
Thu 4/301:08 pm
BUF
-
ORD
1 stop10h 31m
Frontier
Deal found 3/24$147
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 5/14:28 pm
ORD
-
BUF
1 stop18h 45m
Frontier
Mon 5/412:32 pm
BUF
-
ORD
1 stop11h 07m
Frontier
Deal found 3/25$160
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:28 pm
ORD
-
BUF
1 stop18h 45m
Frontier
Mon 4/2712:32 pm
BUF
-
ORD
1 stop22h 30m
Frontier
Deal found 3/26$163
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:50 am
ORD
-
BUF
1 stop5h 23m
Frontier
Mon 4/2012:32 pm
BUF
-
ORD
1 stop11h 07m
Frontier
Deal found 3/28$166
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 5/166:55 am
ORD
-
BUF
1 stop26h 46m
Frontier
Mon 5/257:52 pm
BUF
-
ORD
1 stop28h 21m
Frontier
Deal found 3/25$169
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:28 am
ORD
-
BUF
2 stops21h 39m
Multiple Airlines
Sat 5/21:11 pm
BUF
-
ORD
1 stop9h 01m
Multiple Airlines
Deal found 3/27$172
This Priceline deal was found by Cheapflights users on 3/29. 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 4/156:30 am
MDW
-
BUF
1 stop5h 22m
Frontier
Fri 4/1712:08 pm
BUF
-
MDW
1 stop8h 23m
Frontier
Deal found 3/29$180
This Expedia deal was found by Cheapflights users on 3/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:15 am
ORD
-
BUF
1 stop6h 02m
Frontier
Mon 4/1312:42 pm
BUF
-
ORD
1 stop10h 57m
Frontier
Deal found 3/25$180
This Frontier deal was found by Cheapflights users on 3/24. 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 4/308:21 am
MDW
-
BUF
1 stop9h 52m
Frontier
Sat 5/21:11 pm
BUF
-
MDW
1 stop10h 03m
Frontier
Deal found 3/24$181

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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(Frontier)

One-way from

$70
(Frontier)

Popular in

February

Cheapest in

September

Average price

$451

Good round-trip deal

$317 or less

Good one-way deal

$179 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. 23% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 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 29, 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

Cheapest round-trip

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 4/21

6:02 pm-8:43 pm

Nonstop1h 41m

Buffalo

Tue 4/28

1:52 pm-2:55 pm

Nonstop2h 03m

$221

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Fri 5/1

6:00 am-12:13 pm

1 stop29h 13m

Buffalo

Sun 5/3

12:32 pm-10:19 pm

1 stop10h 47m

$241

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 4/21

10:45 am-4:50 pm

1 stop5h 05m

Buffalo

Tue 4/28

3:53 pm-8:40 pm

1 stop5h 47m

$241

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Thu 4/23

7:45 am-10:15 am

Nonstop1h 30m

Buffalo

Mon 4/27

11:25 am-12:05 pm

Nonstop1h 40m

$265
Quickest round-trip

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

$265

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 4/14

11:08 am-7:19 pm

1 stop7h 11m

Buffalo

Thu 4/16

4:59 pm-11:59 pm

1 stop8h 00m

$265

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sun 5/10

6:59 am-9:41 am

Nonstop1h 42m

Buffalo

Tue 5/19

11:02 am-12:00 pm

Nonstop1h 58m

$305

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sun 5/10

12:55 pm-3:25 pm

Nonstop1h 30m

Buffalo

Tue 5/19

6:55 pm-7:35 pm

Nonstop1h 40m

$305

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Fri 5/29

6:17 pm-9:03 pm

Nonstop1h 46m

Buffalo

Mon 6/1

7:00 am-7:59 am

Nonstop1h 59m

$307

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 6/10

2:00 pm-4:46 pm

Nonstop1h 46m

Buffalo

Sat 6/13

5:52 pm-6:57 pm

Nonstop2h 05m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 40 resultsSorted by cheapest first
1
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3
4

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 March 13, 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 $276). 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 29, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 9% 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 March 23, 2026.

Travelers seeking maximum savings on their Chicago to Buffalo flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons 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 29, 2026.

The most flights from CHI to BUF are scheduled on a Saturday (20 on average). You will have fewer flight options on Sunday, 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 29, 2026.
Read through reviews of airlines operating flights from Chicago to Buffalo, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,331 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,508 reviews
Southwest
8.0
Very good
4,331 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,521 reviews
Southwest
8.0
Very good
4,331 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,009 reviews
Southwest
8.0
Very good
4,331 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 10 daily inbound flights from Chicago from 4 different airlines.

  • How long is the flight from Chicago to Buffalo?

    United Airlines, Delta, and Frontier can get you from Chicago to Buffalo in just under 1h 41m. Your travel time can differ by up to 18h 03m. There are 472 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: GoJet (73%), Envoy Air (70%), Alaska Airlines (70%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $333 for a flight from Chicago to Buffalo. The cheapest flight overall is $134 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $166.

  • 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 $276). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Chicago to Buffalo

Discover the top 5 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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$98Average$254FlexibilityNo cancel feeOn-time62%
FrontierCheapest$132Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$300FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$347FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$451FlexibilityNo cancel feeOn-time63%

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