$90+ Cheap flights from Buffalo (BUF) to O'Hare Intl (ORD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to O'Hare Intl 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 Buffalo to Chicago O'Hare Intl are usually found in January or April, booked 43 days in advance, depart on a Saturday or Wednesday and return on a Saturday
Cheap flight deals from Buffalo to O'Hare Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Buffalo to O'Hare IntlExplore the most affordable flight options available from Buffalo to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
Explore the most affordable flight options available from Buffalo to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
This Trip.com deal was found by Cheapflights users on 9/4. 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 9/191:40 pm -
1 stop5h 43m
Sat 9/266:20 am -
1 stop5h 30m
Deal found 9/4![Frontier logo]()
$229
This Frontier deal was found by Cheapflights users on 9/4. 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 9/191:40 pm -
1 stop5h 43m
Wed 9/236:20 am -
1 stop5h 35m
Deal found 9/4![Frontier logo]()
$230
This Priceline deal was found by Cheapflights users on 9/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:44 pm -
1 stop5h 47m
Thu 10/158:26 am -
1 stop8h 26m
Deal found 9/2![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 9/4. 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 10/112:49 pm -
1 stop11h 10m
Wed 10/76:20 am -
1 stop5h 35m
Deal found 9/4![Frontier logo]()
$234
This Super.com deal was found by Cheapflights users on 9/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:53 pm -
1 stop19h 38m
Tue 10/208:46 am -
1 stop8h 10m
Deal found 9/2![Frontier logo]()
$239
This Expedia deal was found by Cheapflights users on 9/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:40 pm -
1 stop5h 43m
Wed 10/76:20 am -
1 stop5h 35m
Deal found 9/3![Frontier logo]()
$243
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:54 pm -
1 stop21h 24m
Sat 11/217:40 pm -
1 stop21h 47m
Deal found 9/2![Frontier logo]()
$244
This Expedia deal was found by Cheapflights users on 9/4. 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.
Sat 9/191:40 pm -
1 stop5h 43m
Mon 9/213:50 pm -
1 stop24h 59m
Deal found 9/4![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 9/5. 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.
Fri 10/21:40 pm -
1 stop5h 43m
Sat 10/36:20 am -
1 stop5h 30m
Deal found 9/5![Frontier logo]()
$255
Best flights from Buffalo to O'Hare IntlDiscover carefully curated flight deals from Buffalo to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Buffalo to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 10/1510:46 am -
Nonstop1h 59m
Tue 10/206:50 am -
Nonstop1h 39m
Deal found 9/3![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 9/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:00 am -
1 stop8h 08m
Tue 11/106:00 am -
1 stop6h 26m
Deal found 9/2![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 9/247:00 am -
Nonstop2h 00m
Thu 9/246:00 pm -
Nonstop1h 47m
Deal found 9/3![United Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 10/1210:46 am -
Nonstop1h 59m
Wed 10/142:00 pm -
Nonstop1h 43m
Deal found 9/3![United Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:58 pm -
Nonstop2h 04m
Fri 11/275:51 pm -
Nonstop1h 45m
Deal found 9/1![United Airlines logo]()
$326
This Delta deal was found by Cheapflights users on 9/5. 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.
Thu 10/156:00 am -
1 stop8h 08m
Tue 10/2010:05 am -
1 stop6h 23m
Deal found 9/5![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 9/5. 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.
Tue 10/139:06 am -
1 stop4h 53m
Sat 10/172:00 pm -
1 stop5h 48m
Deal found 9/5![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Wed 9/305:45 pm -
Nonstop2h 02m
Sat 10/36:00 pm -
Nonstop1h 47m
Deal found 9/4![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/35:45 pm -
Nonstop2h 02m
Fri 10/96:50 am -
Nonstop1h 39m
Deal found 9/4![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/107:00 am -
Nonstop2h 00m
Sun 10/116:50 am -
Nonstop1h 39m
Deal found 9/6![United Airlines logo]()
$469
Last-minute flights from Buffalo to O'Hare IntlDiscover last-minute flight deals from Buffalo to O'Hare Intl. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to O'Hare Intl. Data last updated September 6, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:40 pm -
1 stop5h 43m
Sat 9/126:20 am -
1 stop5h 30m
Deal found 9/4![Frontier logo]()
$335
This Frontier deal was found by Cheapflights users on 9/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:45 pm -
1 stop5h 38m
Wed 9/166:20 am -
1 stop5h 35m
Deal found 9/1![Frontier logo]()
$256
This Orbitz deal was found by Cheapflights users on 9/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:45 pm -
1 stop5h 38m
Mon 9/143:50 pm -
1 stop24h 59m
Deal found 9/3![Frontier logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Sun 9/1312:49 pm -
1 stop11h 10m
Thu 10/297:50 pm -
1 stop16h 13m
Deal found 9/5![Frontier logo]()
$319
This Expedia deal was found by Cheapflights users on 9/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:40 pm -
1 stop5h 43m
Wed 9/163:50 pm -
1 stop24h 55m
Deal found 9/2![Frontier logo]()
$295
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:40 pm -
1 stop5h 43m
Sat 9/196:20 am -
1 stop5h 35m
Deal found 9/1![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:40 pm -
1 stop5h 43m
Mon 9/218:55 pm -
2 stops39h 00m
Deal found 9/3![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Wed 9/161:40 pm -
1 stop5h 43m
Thu 10/297:50 pm -
1 stop16h 13m
Deal found 9/5![Frontier logo]()
$313
One-way flights from Buffalo to O'Hare IntlSearch for one-way flight options from Buffalo to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
Search for one-way flight options from Buffalo to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This Frontier deal was found by Cheapflights users on 9/2. 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 Frontier is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Wed 9/301:40 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 9/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:51 pm -
1 stop29h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:45 pm -
1 stop5h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$104
This Mytrip deal was found by Cheapflights users on 9/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:40 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$106
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:40 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$110
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:49 pm -
1 stop11h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$115
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:51 pm -
1 stop29h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$116
This Frontier deal was found by Cheapflights users on 9/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:48 pm -
1 stop5h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$119
This Priceline deal was found by Cheapflights users on 9/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:40 pm -
1 stop8h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 9/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:49 pm -
1 stop11h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$124
Find flight deals from Buffalo to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to O'Hare Intl (ORD). 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 September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $229 (Trip.com) |
One-way from | $90 (Frontier) |
Popular in | August |
Cheapest in | January |
Average price | $339 |
Good round-trip deal | $350 or less |
Good one-way deal | $209 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Buffalo to O'Hare Intl 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 7,457,451 searches. Data last updated September 6, 2026.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Thu 10/15
7:00 am-8:00 am
Nonstop2h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$157
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Sat 10/31
11:20 am-5:20 pm
1 stop7h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$169
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Tue 9/29
5:45 pm-6:47 pm
Nonstop2h 02m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$180
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Fri 10/30
6:30 am-7:33 am
Nonstop2h 03m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$192
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Sat 10/3
5:45 pm-6:47 pm
Nonstop2h 02m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$194
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Sat 12/5
5:39 pm-6:50 pm
Nonstop2h 11m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$194
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Tue 11/3
5:58 pm-7:02 pm
Nonstop2h 04m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$194
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Mon 3/1
2:10 pm-7:15 pm
1 stop6h 05m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$200
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Sat 11/7
2:10 pm-7:20 pm
1 stop6h 10m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$200
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Tue 11/3
6:15 am-10:11 am
1 stop4h 56m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$200
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Buffalo to O'Hare Intl
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 Buffalo to O'Hare Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Buffalo-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Buffalo-Chicago O'Hare Intl Airport 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 Buffalo-Chicago O'Hare Intl Airport 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 Buffalo to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Buffalo with our price prediction graph.
BUF-ORD
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 O'Hare Intl Airport
How far ahead should I book a flight from Buffalo to Chicago O'Hare Intl Airport?
Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Buffalo to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of $241). Flying from Buffalo to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $454). 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 ORD?
Find hourly flight availability from Buffalo to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 6, 2026.
It’s optimal to fly from Buffalo to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.
The best insider tips for Buffalo to Chicago O'Hare Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Buffalo to Chicago O'Hare Intl Airport trip
Our travel experts
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated September 6, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Buffalo to Chicago O'Hare Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.6
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.6
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Buffalo to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago O'Hare Intl Airport?
Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locationsBenton Harbor
Rosemont
Naperville
Glenview
Lake Geneva
Schaumburg
Oakbrook Terrace
Delavan
Oak Brook
Libertyville
Des Plaines
Orland Park
Hoffman Estates
Aurora
Beloit
Rockford
South Holland
Elgin
Racine
Skokie
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Other flights to O'Hare Intl
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Buffalo and O'Hare Intl flights
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Top 2 airlines flying from Buffalo to O'Hare Intl
Discover the top 2 airlines that operate flights from Buffalo to O'Hare Intl. 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 7,457,451 searches. Data last updated September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$349 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$362 | FlexibilityNo cancel fee | On-time69% |