BUF - ORD

C$ 147 Find Cheap Flights from Buffalo to Chicago – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 347
Typical prices: C$ 385-C$ 597
Frontier
Sat 13/10Sat 20/10
BUF - ORD • 1 stop
Cheapest direct flights
C$ 349
Typical prices: C$ 404-C$ 614
American Airlines
Sat 13/10Sat 20/10
BUF - ORD • Direct
Direct flights
Every day
You can fly direct with United Airlines and American Airlines. Average duration is 2h 07m
Direct flights
+1
Direct flights
+1
When to book
20 weeks
in advance
Our data shows that travellers who book at least 20 weeks in advance save around 73% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 16% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Raleigh-Durham (RDU)
Cheapest • Avg C$ 200 (round-trip)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 3h 50m (one-way)
Insights
Insights
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We hope you enjoy your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Buffalo to O'Hare Intl (BUF-ORD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to O'Hare Intl

Tue, 13 Oct - Tue, 20 Oct
Frontier Logo
6:51 p.m. - 7:51 a.m.BUF  Buffalo-ORD Chicago O'Hare Intl
14h 00m1 stop Orlando
Frontier Logo
7:44 p.m. - 12:59 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
16h 15m1 stop Atlanta Hartsfield-Jackson
C$ 347Frontier
Tue, 13 Oct - Tue, 20 Oct
American Airlines Logo
5:50 p.m. - 7:00 p.m.BUF  Buffalo-ORD Chicago O'Hare Intl
2h 10mdirect
American Airlines Logo
9:16 p.m. - 11:59 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 43mdirect
C$ 349American Airlines
Wed, 21 Oct - Wed, 21 Oct
United Airlines Logo
10:46 a.m. - 11:45 a.m.BUF  Buffalo-ORD Chicago O'Hare Intl
1h 59mdirect
United Airlines Logo
6:00 p.m. - 8:47 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 47mdirect
C$ 349United Airlines
Tue, 13 Oct - Tue, 20 Oct
Frontier Logo
6:51 p.m. - 11:32 a.m.BUF  Buffalo-ORD Chicago O'Hare Intl
17h 41m2 stops Orlando Atlanta Hartsfield-Jackson
Frontier Logo
7:44 p.m. - 12:59 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
16h 15m1 stop Atlanta Hartsfield-Jackson
C$ 350Frontier
Mon, 19 Oct - Wed, 21 Oct
Frontier Logo
1:44 p.m. - 7:51 a.m.BUF  Buffalo-ORD Chicago O'Hare Intl
19h 07m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
6:00 a.m. - 12:59 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
5h 59m1 stop Atlanta Hartsfield-Jackson
C$ 361Frontier
Tue, 13 Oct - Tue, 20 Oct
American Airlines Logo
1:11 p.m. - 7:20 p.m.BUF  Buffalo-ORD Chicago O'Hare Intl
7h 09m1 stop Philadelphia
American Airlines Logo
9:16 p.m. - 11:59 p.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 43mdirect
C$ 363American Airlines
Mon, 19 Oct - Wed, 21 Oct
American Airlines Logo
5:50 p.m. - 7:00 p.m.BUF  Buffalo-ORD Chicago O'Hare Intl
2h 10mdirect
American Airlines Logo
8:03 a.m. - 10:53 a.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 50mdirect
C$ 372American Airlines
Thu, 22 Oct - Tue, 27 Oct
American Airlines Logo
8:00 a.m. - 9:05 a.m.BUF  Buffalo-ORD Chicago O'Hare Intl
2h 05mdirect
American Airlines Logo
8:07 a.m. - 10:49 a.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 42mdirect
C$ 372American Airlines
Sat, 12 Dec - Mon, 14 Dec
American Airlines Logo
6:46 p.m. - 8:00 p.m.BUF  Buffalo-ORD Chicago O'Hare Intl
2h 14mdirect
American Airlines Logo
8:00 a.m. - 10:48 a.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 48mdirect
C$ 372American Airlines
Sat, 12 Dec - Mon, 14 Dec
United Airlines Logo
5:40 p.m. - 6:54 p.m.BUF  Buffalo-ORD Chicago O'Hare Intl
2h 14mdirect
United Airlines Logo
6:55 a.m. - 9:44 a.m.ORD  Chicago O'Hare Intl-BUF Buffalo
1h 49mdirect
C$ 374United Airlines
Booking Insights

Price, demand, and travel trends for Buffalo to Chicago O'Hare Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Buffalo to Chicago O'Hare Intl Airport with more confidence.

How much is a round-trip flight from Buffalo to Chicago O'Hare Intl Airport?

Round-trip flights from Buffalo to Chicago O'Hare Intl Airport start at C$ 347. Prices are below average for this route right now, with typical round-trip fares ranging from C$ 385 to C$ 597. The lowest price found in the past 5 days was C$ 347 on Frontier.

What's the cheapest day of the week to fly from Buffalo to Chicago O'Hare Intl Airport?

Saturday is the cheapest day of the week to fly from Buffalo to Chicago O'Hare Intl Airport and is 10% cheaper than the average day. Sunday is the most expensive day with flight prices 3% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Buffalo to Chicago O'Hare Intl Airport?

  • January is the cheapest month to fly from Buffalo to Chicago O'Hare Intl Airport at C$ 392 round-trip.
  • March (C$ 582) and February (C$ 527) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 48% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Buffalo to Chicago O'Hare Intl Airport the cheapest?

Flights from Buffalo to Chicago O'Hare Intl Airport are cheapest 20 weeks before departure. Booking in this window typically costs about 73% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Buffalo to O'Hare Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Jennifer Bain

Jennifer Bain

Expert on BUF

Jennifer Bain is a Canadian travel writer who takes at least 50 flights a year and has proudly visited all 13 of Canada's provinces and territories. She is a former newspaper travel editor who has written three travel books. Jennifer is the Canada editor for U.S.-based National Parks Traveler and freelances for numerous other outlets.

Read more

Key details for Buffalo to Chicago O'Hare Intl Airport flights

Low season

January

Cheapest flight

C$ 150
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flights from Buffalo to Chicago O'Hare Intl Airport

When to book flights from Buffalo to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Buffalo to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Buffalo to Chicago O'Hare Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airlines offer extra legroom and free seat selection on Buffalo to Chicago O'Hare Intl Airport flights?

    Among airlines operating Buffalo to Chicago O'Hare Intl Airport flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines are available on the route from Buffalo to Chicago O'Hare Intl Airport?

    2 airlines operate flights between Buffalo and Chicago O'Hare Intl Airport. The airlines offering direct flights on this route include:

    • United Airlines
    • American Airlines

  • Which airports can I use when flying from Buffalo to Chicago O'Hare Intl Airport?

    Flights from Buffalo to Chicago O'Hare Intl Airport usually depart from Buffalo (BUF) and arrive at Chicago O'Hare Intl (ORD).

  • Which airlines include bags at no extra cost on Buffalo to Chicago O'Hare Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a carry-on bag and a checked bag in Economy Class
    • American Airlines: a carry-on bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

  • Which cabin classes can I book on flights from Buffalo to Chicago O'Hare Intl Airport?

    Two cabin classes are available on flights from Buffalo to Chicago O'Hare Intl Airport:

    • Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Buffalo to Chicago O'Hare Intl Airport?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 200 round-trip via Raleigh-Durham (RDU), compared to C$ 480 for direct.

  • What is the standard checked bag allowance on flights from Buffalo to Chicago O'Hare Intl Airport?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 139 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Buffalo to Chicago O'Hare Intl Airport?

    The Airbus A319 family is used most often on this route, operated mainly by American Airlines and United Airlines. Other aircraft seen on the route include Boeing 737-800 variants.

  • Which airports do connecting flights from Buffalo to Chicago O'Hare Intl Airport pass through?

    One-stop flights from Buffalo to Chicago O'Hare Intl Airport most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) – 55% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 21% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) – 13% of one-stop connections
    • Boston Logan Intl (BOS) – 5% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Buffalo to Chicago O'Hare Intl Airport?

    On the Buffalo to Chicago O'Hare Intl Airport route, being flexible with your departure day can save you up to 13%. Saturday is the cheapest day at C$ 426 round-trip on average, while Sunday is the most expensive at C$ 486 – a C$ 60 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How are flight departures from Buffalo to Chicago O'Hare Intl Airport spread across the day?

    Morning is the busiest departure period on Buffalo to Chicago O'Hare Intl Airport flights, with 58% leaving in that window. Evening departures account for 28%, Afternoon flights for 14%, and Night flights for 0%.

  • Which popular places can I visit in Chicago O'Hare Intl Airport?

    Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, River North, and Grant Park. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

  • What are the earliest and latest flights from Buffalo to Chicago O'Hare Intl Airport?

    These are the earliest and latest flight times available from Buffalo to Chicago O'Hare Intl Airport:

    • Earliest: departs at 6:00 am and lands at 8:07 am
    • Latest: departs at 9:45 pm and lands at 11:52 pm.

    The flight takes about 2h 07m.

  • How expensive are last-minute Buffalo to Chicago O'Hare Intl Airport flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 58% above the route average of C$ 469. Book 20 weeks before departure for the lowest fares.

  • How long does a flight from Buffalo to Chicago O'Hare Intl Airport take?

    A direct flight from Buffalo to Chicago O'Hare Intl Airport takes 2h 07m, covering 1,222 km.

  • Do I need a passport to fly from Buffalo to Chicago O'Hare Intl Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Buffalo to Chicago O'Hare Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 347 to C$ 1,359. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Buffalo to Chicago O'Hare Intl Airport looking right now?

    One-way fares from Buffalo to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about C$ 193, which is 35% below the typical average for this route.

  • How much time can I save by choosing a different layover airport when travelling from Buffalo to Chicago O'Hare Intl Airport?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 3h 50m, compared with 5h 49m via Boston Logan Intl (BOS) and 7h 06m via New York John F Kennedy Intl (JFK).

  • What is the time difference between Buffalo and Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport is 1 hour behind Buffalo (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Chicago O'Hare Intl Airport (ORD)?

    Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates starting from around C$ 24 for economy cars. Top options include:
    • Routes Car & Truck Rentals
    • Europcar
    • Hertz
    • Dollar
    • Ace

  • How much should I expect to pay for a Buffalo to Chicago O'Hare Intl Airport flight?

    Round-trip flights from Buffalo to Chicago O'Hare Intl Airport range from C$ 385 to C$ 597, with an average of C$ 469 over the past 12 months. Anything below C$ 385 counts as a good deal.

  • Which airlines offer Wi-Fi on Buffalo to Chicago O'Hare Intl Airport flights?

    Two airlines offer in-flight Wi-Fi on Buffalo to Chicago O'Hare Intl Airport flights:

    • • American Airlines
    • • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

Your guide to booking Buffalo to Chicago O'Hare Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure instead of Sunday. On this route, Saturday flights average C$ 426 – about C$ 60 less than Sunday (12% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 73% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Buffalo to Chicago O'Hare Intl Airport trip for January. Fares historically average C$ 392 round-trip in that month – typically C$ 190 less than the most expensive month, which is March (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Raleigh-Durham Airport (RDU) can be cheaper than flying direct. The cheapest layover option averages C$ 200 round-trip on this route – about C$ 280 less than direct flights (based on the last 12 months).

Prefer to fly direct from Buffalo to Chicago?

 
Find which airlines fly direct from Buffalo Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Buffalo to Chicago O'Hare Intl

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Buffalo

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more nonstop flights

More options for your flight from Buffalo to O'Hare Intl

Complete your trip to Chicago with a hotel stay or car rental

Car rentals in Chicago
Hotels in Chicago
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