HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buffalo

$65+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
mai 18 — mai 251
lun. 5/18
lun. 5/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
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 avril 18, 2026.

This Orbitz deal was found by Cheapflights users on 4/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/186:00 am
MDW
-
BUF
1 stop6h 54m
Frontier
mar. 5/1911:36 am
BUF
-
MDW
1 stop11h 26m
Frontier
Deal found 4/16$140
This Expedia deal was found by Cheapflights users on 4/16. 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.
dim. 5/108:39 am
ORD
-
BUF
1 stop10h 25m
Frontier
mar. 5/1211:36 am
BUF
-
ORD
1 stop9h 15m
Frontier
Deal found 4/16$140
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
mar. 5/261:50 pm
ORD
-
BUF
1 stop23h 04m
Frontier
mar. 6/211:36 am
BUF
-
ORD
1 stop9h 15m
Frontier
Deal found 4/14$145
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
lun. 5/186:55 am
ORD
-
BUF
1 stop5h 59m
Frontier
mar. 5/1911:36 am
BUF
-
ORD
1 stop9h 15m
Frontier
Deal found 4/16$153
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ven. 5/291:50 pm
ORD
-
BUF
1 stop20h 38m
Multiple Airlines
lun. 6/17:52 pm
BUF
-
ORD
1 stop27h 22m
Multiple Airlines
Deal found 4/14$157
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
sam. 5/2311:59 am
MDW
-
BUF
1 stop21h 42m
Frontier
mar. 5/2611:36 am
BUF
-
MDW
1 stop24h 33m
Frontier
Deal found 4/16$159
This Frontier deal was found by Cheapflights users on 4/13. 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.
mar. 4/286:10 am
MDW
-
BUF
1 stop5h 32m
Frontier
jeu. 5/711:36 am
BUF
-
MDW
1 stop11h 26m
Frontier
Deal found 4/13$160
This Priceline deal was found by Cheapflights users on 4/14. 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.
sam. 5/25:50 am
ORD
-
BUF
1 stop5h 23m
Frontier
mar. 5/511:36 am
BUF
-
ORD
1 stop9h 15m
Frontier
Deal found 4/14$160
This Frontier deal was found by Cheapflights users on 4/15. 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.
mer. 5/206:00 am
MDW
-
BUF
1 stop6h 54m
Frontier
dim. 5/2411:36 am
BUF
-
MDW
1 stop11h 26m
Frontier
Deal found 4/15$165
This Expedia deal was found by Cheapflights users on 4/16. 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.
dim. 5/178:39 am
ORD
-
BUF
1 stop10h 25m
Frontier
lun. 5/257:52 pm
BUF
-
ORD
1 stop28h 21m
Frontier
Deal found 4/16$165
This Delta deal was found by Cheapflights users on 4/15. 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.
ven. 5/86:36 pm
MDW
-
BUF
1 stop4h 23m
Delta
dim. 5/106:25 am
BUF
-
MDW
1 stop3h 18m
Delta
Deal found 4/15$167
This Delta deal was found by Cheapflights users on 4/16. 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.
jeu. 5/77:07 am
ORD
-
BUF
1 stop7h 39m
Delta
lun. 5/114:55 pm
BUF
-
ORD
1 stop8h 04m
Delta
Deal found 4/16$167

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 avril 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$136
(Kiwi.com)

One-way from

$65
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$323

Good round-trip deal

$307 or less

Good one-way deal

$189 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. 24% potential increase in price ($114 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 April 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 avril 18, 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

mer. 9/2

7:00 am-1:46 pm

1 stop5h 46m

Buffalo

lun. 9/7

7:40 pm-11:57 pm

1 stop5h 17m

$167

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mer. 5/6

6:04 am-2:52 pm

1 stop7h 48m

Buffalo

jeu. 5/7

4:55 pm-9:53 pm

1 stop5h 58m

$167

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

jeu. 5/7

7:07 am-3:46 pm

1 stop7h 39m

Buffalo

sam. 5/9

5:11 pm-9:53 pm

1 stop5h 42m

$167

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

ven. 5/29

6:36 pm-11:59 pm

1 stop4h 23m

Buffalo

lun. 6/1

9:00 am-12:42 pm

1 stop4h 42m

$187

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

sam. 5/30

5:10 pm-11:59 pm

1 stop5h 49m

Buffalo

mar. 6/2

4:55 pm-9:09 pm

1 stop5h 14m

$187

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

mer. 7/1

7:01 am-11:24 am

1 stop3h 23m

Buffalo

dim. 7/5

6:00 am-10:13 am

1 stop5h 13m

$206

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

ven. 6/5

5:08 pm-11:59 pm

1 stop5h 51m

Buffalo

dim. 6/14

8:58 am-12:36 pm

1 stop4h 38m

$207

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

sam. 5/30

3:35 pm-6:00 pm

Nonstop1h 25m

Buffalo

mar. 6/2

11:00 am-4:15 pm

1 stop6h 15m

$261

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

mer. 5/6

7:50 am-10:20 am

Nonstop1h 30m

Buffalo

lun. 5/11

5:20 pm-10:20 pm

1 stop6h 00m

$261

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

jeu. 5/7

7:45 am-10:15 am

Nonstop1h 30m

Buffalo

lun. 5/11

6:15 am-11:55 am

1 stop6h 40m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 42 resultsSorted by cheapest first
1
2
3
...
5

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 April.
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 April 10, 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, May is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $77). Flying from Chicago to Buffalo in March is currently the most expensive (average of $257). 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 avril 18, 2026.

Unlike at noon, 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 April 18, 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 avril 18, 2026.

The most flights from CHI to BUF are scheduled on a Wednesday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 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 avril 18, 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
4,330 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

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
4,330 reviews
Southwest
8.0
Very good
4,330 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

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
9,603 reviews
Southwest
8.0
Very good
4,330 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

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
11,610 reviews
Southwest
8.0
Very good
4,330 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

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
2,986 reviews
Southwest
8.0
Very good
4,330 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

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 28 daily inbound flights from Chicago from 5 different airlines.

  • How long is the flight from Chicago to Buffalo?

    Delta and Southwest can get you from Chicago to Buffalo in just under 1h 30m. Your travel time can differ by up to 4h 16m. 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 JetBlue is currently your cheapest option to Buffalo, with prices starting at $98. Additional round-trip tickets that might be worth considering are offered by Frontier and American Airlines, with the lowest prices starting at $132 and $177, respectively. JetBlue is currently priced 71% below the average price you’ll pay for this route.

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

    $95 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $110 and $118, 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: Avianca (100%), Japan Airlines (74%), American Airlines (69%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $359 for a flight from Chicago to Buffalo. The cheapest flight overall is $138 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $167.

  • 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, May is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $77). Flying from Chicago to Buffalo in March is currently the most expensive (average of $257). 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 avril 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$98Average$254FlexibilityNo cancel feeOn-time62%
FrontierCheapest$132Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$311FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$349FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$425FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.