Cheap Flights from Buffalo (BUF) to Chicago (ORD)

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Flight deals from Buffalo Niagara to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara to Chicago O'Hare International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Buffalo Niagara to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to Chicago O'Hare International flights are currently cheapest in August.

Direct flights from Buffalo Niagara to Chicago O'Hare International

Buffalo Niagara to Chicago O'Hare International: Alternative routes

Compare routes from Buffalo Niagara to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

Buffalo to Chicago: Flight information

The things to know before you go.
Cheapest flight found$209
Cheapest month to flySeptember
Average flight time1 hr, 58 mins
Most popular airlineAlaska Airlines
Average flights per week332

Finding cheap flights from Buffalo Niagara to Chicago O'Hare International: Frequently asked questions

The best price we found for a return flight from Buffalo Niagara to Chicago O'Hare International is $209. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 58 minutes is the average flight time from Buffalo Niagara to Chicago O'Hare International.
Alaska Airlines, American Airlines and Envoy Air fly direct from Buffalo Niagara to Chicago O'Hare International.
As of July 2025, there are 332 flights per week flying from Buffalo Niagara to Chicago O'Hare International.
The cheapest month to fly from Buffalo Niagara to Chicago O'Hare International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Chicago O'Hare International Airport on Monday, 1 September 2025.
Yes – the average flight time is 1 hour and 58 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago O'Hare International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Chicago O'Hare International.

Flying from Buffalo Niagara International Airport (BUF) to O'Hare International Airport (ORD): what you need to know

  • Around 1 hour 55 minutes is how long you'll be travelling on a direct flight from Buffalo Niagara International Airport to O'Hare International Airport.

  • Chicago is one hour behind Buffalo and observes the UTC-5 timezone.

  • You can choose from 197 weekly Buffalo Niagara International Airport to O'Hare International Airport flights. The 06:46 departure with American Airlines is the earliest flight available. American Airlines operates the last service of the day at 18:30.

  • Give yourself enough time to catch your BUF to ORD flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as August, it's best to get to the airport earlier than normal. Plan to arrive two hours before domestic departures and four hours ahead for an international flight when you travel during a peak period in general.

  • American Airlines is your ticket to exploring Chicago (and perhaps some other great parts of United States!). Browse the direct flights from Buffalo Niagara International Airport to O'Hare International Airport offered by this carrier.

  • American Airlines is the top choice for travellers on this route.

  • American Airlines is the most punctual carrier operating BUF to ORD flights, with 74.05% of its services landing on time.

  • If you want to add a stop to your trip, just deselect 'Direct flights only' when searching for your ticket from Buffalo Niagara International Airport to O'Hare International Airport. Here are the top stopovers between BUF and ORD:

    • Detroit Metropolitan Wayne County Airport

    • Baltimore/Wash International Thurgood Marshall Airport

    • Ronald Reagan National Airport

How to find the cheapest flights from Buffalo Niagara International Airport (BUF) to O'Hare International Airport (ORD)

  • $104 is the best price for a one-way Buffalo Niagara International Airport to O'Hare International Airport flight. A return flight starts at $209. These fares may change based on availability.

  • Book six months before you travel. After crunching the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from BUF to ORD.

  • The cheapest month for flights from Buffalo Niagara International Airport to O'Hare International Airport is May. Use the 'Whole month' tool to see the lowest airfares if you have a flexible schedule.

  • You don't need to check back in every day to see if fares have gone down when you create a Price Alert. We'll notify you the moment a special offer becomes available on cheap flights from BUF to ORD.

  • Tailor your flights using filters. Select your preferred arrival and departure times, airlines and total journey duration. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from Buffalo Niagara International Airport to O'Hare International Airport.

Handy information about Buffalo Niagara International Airport (BUF)

  • BUF is located at Genesee Street.

  • 75.46% of flights that leave from Buffalo Niagara International Airport make it to their destination on schedule.

  • Central Buffalo to Buffalo Niagara International Airport is approximately 18 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, ride-sharing or catching a cab.

  • The journey when using public transport typically takes 1 hour 15 minutes.

  • Have an early flight from Buffalo Niagara International Airport to O'Hare International Airport? Avoid the last-minute rush to the airport (and get some extra shut-eye) by picking one of these stays close to BUF:

Arriving at O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • You'll find ORD at 10000 West O'Hare.

  • O'Hare International Airport to the centre of Chicago has a drive time of around 35 minutes. It's approximately 40 kilometres away.

  • Getting to the centre by public transport will take you around 55 minutes.

When to fly to O'Hare International Airport (ORD)

  • It's time to pick your trip dates for your flight from Buffalo Niagara International Airport to O'Hare International Airport. August is the busiest month to head to Chicago. If you want a more low-key vibe, go in January.

  • The warmest month in Chicago is July, with the temperature ranging between 15ºC (59ºF) and 29ºC (84ºF). Book your flights from Buffalo Niagara International Airport to O'Hare International Airport in this month if this is the kind of weather you like.

  • Look for cheap tickets from BUF to ORD in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 3ºC (37ºF) on average.

Explore more of United States

  • You've done Chicago, now it's time to discover more of United States. Journey around 451 kilometres south-east to Columbus to tick off its must-visit sights. From Franklin Park Conservatory and Botanical Gardens to Ohio Statehouse and German Village, you'll have a full itinerary ahead.

  • Around 257 kilometres south-east of Chicago, Indianapolis is another essential stop in United States. Experience major highlights starting with The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.