Cheap flights from Buffalo to Chicago from C$ 145

In general, January is the cheapest month to fly from Buffalo to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 334. The month of April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Buffalo averaging around C$ 442.

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Saturday when prices can be found for as low as C$ 697. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Buffalo to Chicago O'Hare Intl Airport for around C$ 1,351.

In the morning is the cheapest time of day to fly from Buffalo to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 758. Flying to Chicago O'Hare Intl Airport in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,558 on average. Flights to Chicago O'Hare Intl Airport from Buffalo at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Buffalo to Chicago O'Hare Intl for the best Buffalo - Chicago O'Hare Intl flight prices

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around C$ 484 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Buffalo for as low as C$ 309 on momondo.

There are 4 cabin classes available to choose from on Buffalo to Chicago O'Hare Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 61% on your flight if you consider stops on a Buffalo to Chicago O'Hare Intl Airport flight.

As of September 2026, prices for Buffalo to Chicago O'Hare Intl Airport flights are approximately 93% more expensive when compared to flights at the same time last year.

The number of flights available between Buffalo and Chicago O'Hare Intl Airport is 23 per day as of September 2026. The most frequent departure time is 10:00a.m., with 45% of daily flights leaving at noon.

As of September 2026, 162 flights take off from Buffalo and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Fri, with 22% of weekly flights taking off on this day.