Cheap flights from Buffalo to Illinois from $100
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Illinois departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Buffalo to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Illinois?
The cheapest month to fly to Illinois from Buffalo is in August. Flight prices, which tend to average around $289, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $289.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Buffalo to Illinois is on a Friday when prices can be found for as low as $427. Flights from Buffalo to Illinois on a Monday will generally be more expensive and average around $564. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Buffalo to Illinois during this time can be as low as $425. Flights at noon are often more expensive with an average ticket price of $685.
What is the cheapest Buffalo to Illinois flight route?
Fly from Buffalo to Chicago Midway for the best Buffalo - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $344 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Buffalo for as low as $231 on momondo.
What cabin class options are available on Buffalo to Illinois flights?
There are 4 cabin classes available to choose from on Buffalo to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Buffalo to Illinois?
Frontier, JetBlue, and American Airlines are the most popular carriers operating from Buffalo to Illinois
What airlines fly to Illinois?
American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Buffalo according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Buffalo to Illinois on average per day?
31 flights are operational daily from Buffalo to Illinois as of June 2025. The most popular departure time for this route is 1:00PM, with 50% of flights per day taking off in the afternoon.
How many flights depart from Buffalo to Illinois on average per week?
As of June 2025, 222 flights take off from Buffalo and land in Illinois each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.
Cheap Buffalo to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Buffalo to Illinois
When did momondo last update prices for flights from Buffalo Airport to Illinois?
Prices for flights from Buffalo Airport to Illinois are updated daily.
How many operators does momondo search for flights from Buffalo Airport to Illinois?
As of June 2025, there are 5 operators available to choose from for flights from Buffalo Airport to Illinois.
How old do you have to be to fly from Buffalo Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Buffalo to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Buffalo to Illinois is Boeing 737-800 Passenger/BBJ2 (winglets) (11.12% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (10.50%), Boeing 737 MAX 8 (9.64%), and Boeing 737-700 (9.60%).
Best airlines flying from Buffalo to Illinois
Compare and see reviews for airlines that fly from Buffalo to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $58 | Free Cancellation | Rating 5.9 3,301 reviews | |||
| PriceFrom $128 | Free Cancellation | Rating 7.4 8,810 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $259 | Free Cancellation | Rating 8.0 4,280 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Buffalo to Illinois?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Buffalo to Illinois. momondo saves you time and could save you money on your trip.
Can I find flights from Buffalo to Illinois with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Buffalo to Illinois flights to just show those with flexible booking policies.
How can momondo help me find flights from Buffalo to Illinois?
Once all potential Buffalo to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Buffalo to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Buffalo to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.