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$89+ Cheap flights from Buffalo (BUF) to Chicago (CHI)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in August or September, booked 84 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Buffalo to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Chicago (CHI). 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 septiembre 17, 2025.

Round-trip from

$167
(FlightHub)

One-way from

$89
(Trip.com)

Popular in

February

Cheapest in

August

Average price

$284

Good round-trip deal

$304 or less

Good one-way deal

$173 or less
From Buffalo to Chicago (CHI)
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One-way flight from Buffalo to Chicago (CHI)
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Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Buffalo to Chicago (CHI).
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Price to beat on a one-way flight from Buffalo to Chicago (CHI).
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Find flight deals from Buffalo to Chicago

Cheapest flights from Buffalo to Chicago
Explore the most affordable flight options available from Buffalo to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/266:59 pmBUF - ORD
1 stop21h 18mFrontier
dom. 9/288:49 pmORD - BUF
1 stop20h 25mFrontier
Deal found 9/15$167
This Frontier deal was found by Cheapflights users on 9/15. 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.
vie. 10/105:24 pmBUF - ORD
1 stop8h 35mFrontier
sáb. 10/118:30 amORD - BUF
1 stop8h 27mFrontier
Deal found 9/15$168
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/27:41 pmBUF - MDW
1 stop14h 12mFrontier
lun. 10/68:19 amMDW - BUF
1 stop8h 55mFrontier
Deal found 9/16$169
This Priceline deal was found by Cheapflights users on 9/14. 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.
vie. 10/105:24 pmBUF - MDW
1 stop8h 00mFrontier
sáb. 10/118:35 amMDW - BUF
1 stop8h 22mFrontier
Deal found 9/14$170
This Frontier deal was found by Cheapflights users on 9/17. 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.
dom. 9/287:41 pmBUF - MDW
1 stop12h 42mFrontier
dom. 10/510:13 amMDW - BUF
1 stop6h 14mFrontier
Deal found 9/17$177
This Frontier deal was found by Cheapflights users on 9/15. 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.
sáb. 10/181:02 pmBUF - ORD
1 stop11h 27mFrontier
lun. 10/205:05 amORD - BUF
1 stop5h 14mFrontier
Deal found 9/15$177
This FlightHub deal was found by Cheapflights users on 9/17. 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.
sáb. 9/277:11 pmBUF - ORD
1 stop25h 33mFrontier
jue. 10/211:36 amORD - BUF
1 stop6h 10mFrontier
Deal found 9/17$184
This FlightHub deal was found by Cheapflights users on 9/17. 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.
dom. 9/284:57 pmBUF - ORD
1 stop17h 40mFrontier
vie. 10/38:49 pmORD - BUF
1 stop20h 25mFrontier
Deal found 9/17$186
This Frontier deal was found by Cheapflights users on 9/15. 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.
vie. 9/194:57 pmBUF - ORD
1 stop8h 02mFrontier
sáb. 9/278:00 amORD - BUF
1 stop9h 14mFrontier
Deal found 9/15$187
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:38 pmBUF - ORD
2 stops14h 52mFrontier
vie. 11/75:11 amORD - BUF
1 stop7h 36mFrontier
Deal found 9/16$188
This Frontier deal was found by Cheapflights users on 9/15. 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.
lun. 11/102:42 pmBUF - ORD
2 stops11h 17mFrontier
jue. 11/135:11 amORD - BUF
1 stop7h 26mFrontier
Deal found 9/15$189
This Frontier deal was found by Cheapflights users on 9/15. 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.
dom. 9/217:41 pmBUF - MDW
1 stop12h 42mFrontier
lun. 9/298:19 amMDW - BUF
1 stop8h 55mFrontier
Deal found 9/15$190

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Chicago 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 septiembre 17, 2025.
Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.

Fly from

Buffalo

Fly to

Chicago

Route

Depart

Return

Price

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

vie. 10/24

9:13 pm-10:21 am

1 stop14h 08m

Chicago Midway

dom. 10/26

6:24 pm-4:29 pm

1 stop21h 05m

$169

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

dom. 9/28

7:41 pm-7:23 am

1 stop12h 42m

Chicago Midway

dom. 10/5

10:13 am-5:27 pm

1 stop6h 14m

$177

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

vie. 9/26

4:57 pm-11:59 pm

1 stop8h 02m

Chicago O'Hare Intl

lun. 9/29

6:00 am-4:03 pm

1 stop9h 03m

$199

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

vie. 9/26

6:59 pm-9:51 am

1 stop15h 52m

Chicago Midway

mié. 10/1

9:00 am-12:38 pm

2 stops26h 38m

$259

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mar. 9/30

6:00 am-12:10 pm

1 stop7h 10m

Chicago O'Hare Intl

mié. 10/1

9:51 am-5:03 pm

1 stop6h 12m

$269

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

mar. 11/11

6:25 pm-7:10 pm

Nonstop1h 45m

Chicago Midway

jue. 11/13

7:25 pm-9:50 pm

Nonstop1h 25m

$281

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mar. 11/11

5:40 pm-6:46 pm

Nonstop2h 06m

Chicago O'Hare Intl

jue. 11/13

7:25 am-10:03 am

Nonstop1h 38m

$281

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

dom. 9/28

12:17 pm-11:20 pm

1 stop12h 03m

Chicago Midway

lun. 9/29

8:19 am-6:14 pm

1 stop8h 55m

$283

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

sáb. 11/1

10:30 am-12:31 pm

1 stop3h 01m

Chicago Midway

sáb. 11/8

11:10 am-4:25 pm

1 stop4h 15m

$289

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

sáb. 11/15

6:00 am-10:20 am

1 stop5h 20m

Chicago O'Hare Intl

sáb. 11/15

5:08 pm-10:57 pm

1 stop4h 49m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 39 results
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Best time to book a flight from Buffalo to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Chicago. Price data was last updated on September 12, 2025.

The best time to book flights from Buffalo to Chicago is 84 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 Buffalo to Chicago?

Currently, August is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $245). Flying from Buffalo to Chicago in March is currently the most expensive (average of $321). 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 BUF to CHI?

Find hourly flight availability from Buffalo to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

It’s optimal to fly from Buffalo to Chicago in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Chicago. Price data was last updated on September 14, 2025.

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

Weekly flight availability from Buffalo to Chicago

Explore weekly flight availability from Buffalo to Chicago. 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 septiembre 17, 2025.

The most flights from BUF to CHI are scheduled on a Monday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

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

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated septiembre 17, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Buffalo to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Chicago. 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 from for flights from Buffalo to Chicago?

    Located just 8.3 mi from the city center, Buffalo is the airport most travelers will use when flying to Chicago from Buffalo. Booking flights from Buffalo (BUF) to Chicago should be relatively easy as there are 29 daily outbound flights to Chicago from 4 different airlines.

  • How long is the flight from Buffalo to Chicago?

    There are many flights that can get you from Buffalo to Chicago in 1h 45m. Fly via Frontier, JetBlue, or Southwest to get the fastest option. Airlines will cover a distance of 466 mi. This flight may include one or multiple stops.

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

    Flying on Frontier is currently your cheapest option to Chicago, with prices starting at $58. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $157 and $161, respectively. Frontier is priced at 81% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $102. Users have also found prices from $124 and $135 on Frontier and Southwest, respectively.

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

    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 Buffalo to Chicago on time: Avianca (92%), Copa Airlines (88%), ANA (85%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $658 for a flight from Buffalo to Chicago. The cheapest flight overall is $104 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $179.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $245). Flying from Buffalo to Chicago in March is currently the most expensive (average of $321). 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
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Chesterton

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Alternative routes for Buffalo to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Buffalo to Chicago

Discover the top 4 airlines that operate flights from Buffalo to Chicago. 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$200FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$371FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$161Average$327FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$259Average$347FlexibilityNo cancel feeOn-time63%

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