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$89+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Buffalo are usually found in August or June, booked 73 days in advance, depart on a Tuesday or Wednesday 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 31, 2025.

Round-trip from

$185
(FlightHub)

One-way from

$89
(Southwest)

Popular in

January

Cheapest in

August

Average price

$338

Good round-trip deal

$188 or less

Good one-way deal

$152 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. 15% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% 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 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/30. 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.
Sat 8/237:46 pmORD - BUF
1 stop13h 31mFrontier
Sat 9/67:11 pmBUF - ORD
1 stop25h 33mFrontier
Deal found 7/30$185
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 9/178:33 amORD - BUF
Nonstop1h 33mAmerican Airlines
Thu 9/187:30 amBUF - ORD
Nonstop1h 55mAmerican Airlines
Deal found 7/30$186
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:15 pmMDW - BUF
Nonstop1h 30mSouthwest
Wed 8/277:40 amBUF - MDW
1 stop5h 05mSouthwest
Deal found 7/29$187
This Delta deal was found by Cheapflights users on 7/31. 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 8/236:17 pmMDW - BUF
1 stop3h 42mDelta
Tue 8/266:20 amBUF - MDW
1 stop3h 15mDelta
Deal found 7/31$197
This Delta deal was found by Cheapflights users on 7/30. 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.
Wed 8/276:00 amORD - BUF
1 stop6h 39mDelta
Wed 9/312:45 pmBUF - ORD
1 stop4h 28mDelta
Deal found 7/30$197
This Frontier deal was found by Cheapflights users on 7/30. 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 8/2310:51 amMDW - BUF
1 stop22h 26mFrontier
Mon 8/254:55 pmBUF - MDW
1 stop8h 29mFrontier
Deal found 7/30$207
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/138:00 amORD - BUF
1 stop9h 14mMultiple Airlines
Sat 9/2010:55 amBUF - ORD
Nonstop1h 56mMultiple Airlines
Deal found 7/29$214
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Tue 9/166:45 amORD - BUF
1 stop7h 12mJetBlue
Fri 9/193:55 pmBUF - ORD
1 stop5h 53mJetBlue
Deal found 7/31$220
This United Airlines deal was found by Cheapflights users on 7/30. 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 10/47:20 amORD - BUF
Nonstop1h 43mUnited Airlines
Tue 10/1410:55 amBUF - ORD
Nonstop1h 56mUnited Airlines
Deal found 7/30$237
This Southwest deal was found by Cheapflights users on 7/31. 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.
Mon 9/222:55 pmORD - BUF
2 stops7h 10mSouthwest
Tue 9/237:40 amBUF - ORD
1 stop5h 10mSouthwest
Deal found 7/31$251

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 31, 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

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 8/23

7:46 pm-10:17 am

1 stop13h 31m

Buffalo

Sat 9/6

7:11 pm-7:44 pm

1 stop25h 33m

$185

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 9/17

8:33 am-11:06 am

Nonstop1h 33m

Buffalo

Thu 9/18

7:30 am-8:25 am

Nonstop1h 55m

$186

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Tue 8/26

1:15 pm-3:45 pm

Nonstop1h 30m

Buffalo

Wed 8/27

7:40 am-11:45 am

1 stop5h 05m

$187

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 8/23

6:17 pm-10:59 pm

1 stop3h 42m

Buffalo

Tue 8/26

6:20 am-8:35 am

1 stop3h 15m

$197

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 8/27

6:00 am-1:39 pm

1 stop6h 39m

Buffalo

Wed 9/3

12:45 pm-4:13 pm

1 stop4h 28m

$197

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 8/23

10:51 am-10:17 am

1 stop22h 26m

Buffalo

Mon 8/25

4:55 pm-12:24 am

1 stop8h 29m

$207

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 9/13

8:00 am-6:14 pm

1 stop9h 14m

Buffalo

Sat 9/20

10:55 am-11:51 am

Nonstop1h 56m

$214

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 9/16

6:45 am-2:57 pm

1 stop7h 12m

Buffalo

Fri 9/19

3:55 pm-8:48 pm

1 stop5h 53m

$220

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Sat 10/4

7:20 am-10:03 am

Nonstop1h 43m

Buffalo

Tue 10/14

10:55 am-11:51 am

Nonstop1h 56m

$237

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Mon 9/22

2:55 pm-11:05 pm

2 stops7h 10m

Buffalo

Tue 9/23

7:40 am-11:50 am

1 stop5h 10m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 July 25, 2025.

The best time to book flights from Chicago to Buffalo is 73 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 31, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 4% 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 July 27, 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. Wednesday 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 31, 2025.

The most flights from CHI to BUF are scheduled on a Thursday (38 on average). You will have fewer flight options on Saturday, 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 July 31, 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
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,914 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 21 daily inbound flights from Chicago from 4 different airlines.

  • 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 $185. Additional round-trip tickets that might be worth considering are offered by JetBlue and Southwest, with the lowest prices starting at $186 and $187, respectively. Frontier is currently priced 45% below the average price you’ll pay for this route.

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

    $89 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Frontier and Delta, with prices starting from $89 and $99, 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 (87%), Envoy Air (85%), Republic Airways (82%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $264 for a flight from Chicago to Buffalo. The cheapest flight overall is $98 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $177.

  • 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 Buffalo?

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

Browse thousands of different options on Cheapflights for your next trip

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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.
O'Hare Intl to LaGuardia flights
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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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$159Average$312FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$378FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$260Average$367FlexibilityNo cancel feeOn-time63%

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