Qatar Airways allows only one carry-on item in economy, so plan your packing carefully.
Qatar Airways offers extra legroom seats for a fee, typically in emergency exit rows and bulkhead seats.
$107+ Cheap flights from Buffalo (BUF) to O'Hare Intl (ORD)
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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
juin 17 — juin 241
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
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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 September or August, booked 71 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap 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 juin 12, 2025.
Round-trip from | $187 (United Airlines) |
|---|---|
One-way from | $107 (JetBlue) |
Popular in | February |
Cheapest in | September |
Average price | $349 |
Good round-trip deal | $318 or less |
Good one-way deal | $162 or less |
Find flight deals from Buffalo to O'Hare Intl
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 juin 12, 2025.
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 juin 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
lun. 8/187:00 amBUF - ORD
Nonstop1h 56mUnited Airlines
jeu. 8/212:08 pmORD - BUF
Nonstop1h 44mUnited Airlines
Deal found 6/10![United Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 6/11. 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.
mar. 9/167:40 amBUF - ORD
1 stop5h 10mSouthwest
jeu. 9/181:50 pmORD - BUF
1 stop8h 15mSouthwest
Deal found 6/11![Southwest logo]()
$188
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mar. 9/166:01 amBUF - ORD
1 stop4h 46mAmerican Airlines
jeu. 9/189:15 pmORD - BUF
Nonstop1h 38mAmerican Airlines
Deal found 6/11![American Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 6/10. 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.
jeu. 8/2812:45 pmBUF - ORD
1 stop4h 28mDelta
sam. 8/307:15 amORD - BUF
1 stop3h 12mDelta
Deal found 6/10![Delta logo]()
$198
This JetBlue deal was found by Cheapflights users on 6/10. 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.
mar. 9/96:00 amBUF - ORD
1 stop7h 10mJetBlue
ven. 9/121:36 pmORD - BUF
1 stop7h 24mJetBlue
Deal found 6/10![JetBlue logo]()
$205
This Sun Country Air deal was found by Cheapflights users on 6/10. 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.
jeu. 7/311:23 amBUF - ORD
1 stop26h 28mSun Country Air
sam. 7/56:09 pmORD - BUF
1 stop15h 35mSun Country Air
Deal found 6/10![Sun Country Air logo]()
$245
This Expedia deal was found by Cheapflights users on 6/10. 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.
sam. 8/301:56 pmBUF - ORD
1 stop10h 37mFrontier
lun. 9/19:32 amORD - BUF
1 stop9h 38mFrontier
Deal found 6/10![Frontier logo]()
$261
This Mytrip deal was found by Cheapflights users on 6/10. 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.
jeu. 7/1011:17 amBUF - ORD
2 stops35h 13mMultiple Airlines
jeu. 7/176:15 pmORD - BUF
1 stop15h 29mMultiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$312
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 2,558,603 searches. Data last updated juin 12, 2025.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.
Fly from
Buffalo
Fly to
O'Hare Intl
Route
Depart
Return
Price
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
lun. 8/18
7:00 am-7:56 am
Nonstop1h 56m
Chicago O'Hare Intl
jeu. 8/21
2:08 pm-4:52 pm
Nonstop1h 44m
$187
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
mar. 9/16
7:40 am-11:50 am
1 stop5h 10m
Chicago O'Hare Intl
jeu. 9/18
1:50 pm-11:05 pm
1 stop8h 15m
$188
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
mar. 9/16
6:01 am-9:47 am
1 stop4h 46m
Chicago O'Hare Intl
jeu. 9/18
9:15 pm-11:53 pm
Nonstop1h 38m
$197
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
jeu. 8/28
12:45 pm-4:13 pm
1 stop4h 28m
Chicago O'Hare Intl
sam. 8/30
7:15 am-11:27 am
1 stop3h 12m
$198
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
mar. 9/9
6:00 am-12:10 pm
1 stop7h 10m
Chicago O'Hare Intl
ven. 9/12
1:36 pm-10:00 pm
1 stop7h 24m
$205
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
jeu. 7/3
11:23 am-12:51 pm
1 stop26h 28m
Chicago O'Hare Intl
sam. 7/5
6:09 pm-10:44 am
1 stop15h 35m
$245
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
sam. 8/30
1:56 pm-11:33 pm
1 stop10h 37m
Chicago O'Hare Intl
lun. 9/1
9:32 am-8:10 pm
1 stop9h 38m
$261
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
jeu. 7/10
11:17 am-9:30 pm
2 stops35h 13m
Chicago O'Hare Intl
jeu. 7/17
6:15 pm-10:44 am
1 stop15h 29m
$312
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
dim. 8/31
6:00 am-10:47 am
1 stop5h 47m
$107
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
sam. 7/19
5:54 pm-6:50 pm
Nonstop1h 56m
$109
Showing 1-10 of 16 results
The best insider tips for Buffalo to Chicago O'Hare Intl Airport flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Buffalo to Chicago O'Hare Intl Airport trip
Airlines
![Qatar Airways]()
Qatar Airways
![United Airlines]()
United Airlines
United's Economy Plus offers extra legroom and is available for no extra fee for MileagePlus Premier members.
United's Basic Economy allows only a personal item, no carry-on bags, unless exceptions apply.
Our travel experts
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.
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?
Use this chart to determine the optimal time to book a round-trip flight from Buffalo to O'Hare Intl. Price data was last updated on June 9, 2025.
Booking 71 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, August is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of $245). Flying from Buffalo to Chicago O'Hare Intl Airport 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 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 juin 12, 2025.
It’s optimal to fly from Buffalo to Chicago O'Hare Intl Airport in the morning. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Buffalo to Chicago O'Hare Intl Airport
Explore weekly flight availability from Buffalo to O'Hare Intl. 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 juin 12, 2025.
The most flights from BUF to ORD are scheduled on a Monday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).
Rainfall in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.
Temperature in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
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 juin 12, 2025.
To help decide which airline to fly from Buffalo to Chicago, see what other customers have to say about Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Food
7.1
Boarding
8.2
Comfort
8.0
Overall
8.0
Entertainment
7.6
Crew
8.6
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
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 Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsSchaumburg
Hoffman Estates
Rosemont
Beloit
Elgin
Racine
Skokie
Arlington Heights
Rockford
Naperville
Orland Park
Elk Grove Village
Tinley Park
Northbrook
Joliet
Merrillville
Bridgeview
Glenview
Des Plaines
Lake Geneva
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Alternative routes for Buffalo to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Buffalo to O'Hare Intl
Discover the top 3 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 2,558,603 searches. Data last updated juin 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$366 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$331 | FlexibilityNo cancel fee | On-time71% |