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$53+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Buffalo are usually found in August or April, booked 70 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap 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 July 3, 2025.

Round-trip from

$203
(Southwest)

One-way from

$53
(Priceline)

Popular in

January

Cheapest in

August

Average price

$340

Good round-trip deal

$243 or less

Good one-way deal

$108 or less
From Chicago (CHI) to Buffalo
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One-way flight from Chicago (CHI) to Buffalo
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Highest demand for flights based on searches. 14% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Buffalo.
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Price to beat on a one-way flight from Chicago (CHI) to Buffalo.
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Find 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 July 3, 2025.

This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/304:00 pmMDW - BUF
Nonstop1h 25mSouthwest
Wed 8/66:50 amBUF - MDW
Nonstop1h 35mSouthwest
Deal found 7/2$203
This American Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/47:25 pmORD - BUF
Nonstop1h 43mAmerican Airlines
Tue 8/57:30 pmBUF - ORD
1 stop5h 27mAmerican Airlines
Deal found 7/3$203
This JetBlue deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1612:20 pmORD - BUF
1 stop5h 25mJetBlue
Thu 8/215:35 amBUF - ORD
1 stop6h 12mJetBlue
Deal found 7/2$210
This Frontier deal was found by Cheapflights users on 7/3. 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 8/711:15 amORD - BUF
1 stop8h 01mFrontier
Mon 8/118:50 amBUF - ORD
1 stop26h 24mFrontier
Deal found 7/3$212
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:50 pmORD - BUF
1 stop7h 20mSouthwest
Thu 8/287:15 amBUF - ORD
1 stop11h 40mSouthwest
Deal found 7/1$218
This Delta deal was found by Cheapflights users on 7/3. 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.
Sat 11/15:59 pmMDW - BUF
1 stop3h 29mDelta
Sat 11/85:15 pmBUF - MDW
1 stop5h 29mDelta
Deal found 7/3$219
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/162:10 pmORD - BUF
Nonstop1h 45mUnited Airlines
Wed 8/207:05 amBUF - ORD
Nonstop1h 58mUnited Airlines
Deal found 7/3$228
This FlightHub deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:15 amMDW - BUF
1 stop10h 59mFrontier
Sun 8/246:47 pmBUF - MDW
1 stop21h 42mFrontier
Deal found 7/2$232
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/107:01 pmORD - BUF
1 stop3h 43mDelta
Tue 8/126:20 amBUF - ORD
1 stop5h 00mDelta
Deal found 7/1$236
This Sun Country Air deal was found by Cheapflights users on 7/2. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/78:52 pmORD - BUF
1 stop12h 46mSun Country Air
Mon 8/1111:40 amBUF - ORD
1 stop6h 47mSun Country Air
Deal found 7/2$245

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 July 3, 2025.
Use the filters below to find and compare flights from Chicago to Buffalo that are best for you.

Fly from

Chicago

Fly to

Buffalo

Route

Depart

Return

Price

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Wed 7/30

4:00 pm-6:25 pm

Nonstop1h 25m

Buffalo

Wed 8/6

6:50 am-7:25 am

Nonstop1h 35m

$203

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 8/4

7:25 pm-10:08 pm

Nonstop1h 43m

Buffalo

Tue 8/5

7:30 pm-11:57 pm

1 stop5h 27m

$203

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 8/16

12:20 pm-6:45 pm

1 stop5h 25m

Buffalo

Thu 8/21

5:35 am-10:47 am

1 stop6h 12m

$210

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 8/7

11:15 am-8:16 pm

1 stop8h 01m

Buffalo

Mon 8/11

8:50 am-10:14 am

1 stop26h 24m

$212

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 8/27

1:50 pm-10:10 pm

1 stop7h 20m

Buffalo

Thu 8/28

7:15 am-5:55 pm

1 stop11h 40m

$218

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 11/1

5:59 pm-10:28 pm

1 stop3h 29m

Buffalo

Sat 11/8

5:15 pm-9:44 pm

1 stop5h 29m

$219

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 8/16

2:10 pm-4:55 pm

Nonstop1h 45m

Buffalo

Wed 8/20

7:05 am-8:03 am

Nonstop1h 58m

$228

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Thu 8/21

6:15 am-6:14 pm

1 stop10h 59m

Buffalo

Sun 8/24

6:47 pm-3:29 pm

1 stop21h 42m

$232

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sun 8/10

7:01 pm-11:44 pm

1 stop3h 43m

Buffalo

Tue 8/12

6:20 am-10:20 am

1 stop5h 00m

$236

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Thu 8/7

8:52 pm-10:38 am

1 stop12h 46m

Buffalo

Mon 8/11

11:40 am-5:27 pm

1 stop6h 47m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 20 results
1
2

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 June 27, 2025.

The best time to book flights from Chicago to Buffalo is 70 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 $256). Flying from Chicago 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 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 July 3, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 7% on flights from Chicago to Buffalo by exploring options for tickets at noon.

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 June 29, 2025.

Travelers seeking maximum savings on their Chicago to Buffalo flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday 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 July 3, 2025.

The most flights from CHI to BUF are scheduled on a Wednesday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 July 3, 2025.
Read through reviews of airlines operating flights from Chicago to Buffalo, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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
2,916 reviews
Southwest
8.0
Very good
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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
4,266 reviews

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Food

7.0

Overall

8.0

Crew

8.6

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

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 19 daily inbound flights from Chicago from 4 different airlines.

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

    Flying on Southwest is currently your cheapest option to Buffalo, with prices starting at $203. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $203 and $206, respectively. Southwest is currently priced 40% below the average price you’ll pay for this route.

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

    $53 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 United Airlines, with prices starting from $69 and $69, 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: Envoy Air (87%), Japan Airlines (85%), Republic Airways (84%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $278 for a flight from Chicago to Buffalo. The cheapest flight overall is $99 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $137.

  • 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 $256). Flying from Chicago to Buffalo in December is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

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

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Alternative routes for Chicago to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$121Average$190FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$160Average$325FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$211Average$384FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$260Average$366FlexibilityNo cancel feeOn-time63%

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