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Find cheap flights from Buffalo to Illinois from $57

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Illinois departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 5/31
Fri 6/7

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$123
Moline
Moline1 stop$363
St. Louis
St. Louis1 stop$148

Good to know

Low season

January

High season

October

Cheapest flight

$57
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Buffalo to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Buffalo to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Buffalo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Illinois with an airline and back to Buffalo with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Illinois from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Buffalo to the following destinations at these prices or less: Chicago $217 one-way - $385 round-trip
  • Morning departure is around 53% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Buffalo to Illinois

 
Need help choosing which airline to fly with from Buffalo to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10874 reviews
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
7.4Food
Airline reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

6.0 GoodDan, Apr 2024LGA - DEN
Read more about Delta reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Seat back monitors and outlets were dead and not working.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

The flight was delayed but we got to our final destination.

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

We just spent $6000 on our first trip since pre COVID and we were stranded on the runway of our departing airport for 2 hours and 15 minutes while our layover was only an hour and a half. We were told by the pilot we were next for de-icing and then got bumped by 3 other planes. Pilot went on to say they only had one guy working the de-icing where they usually have at least 2. In Rochester. In the heart of winter. Someone missed a step and should be fired. I'm not done.

Everything went well with the flight. But one of the flight attendants had on inappropriate pants. She had on an old worn out pair of sweat pants. The back seam was unrivaled and should not have been worn for work. If I had not seen her in the airport with the standard type of luggage, I certainly would not have thought she was working for Delta. Not a good look at all for representation.

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Another horrible Jet Blue experience. This airline has suffered the biggest decline of all from best to worst. TVs didn’t work (again). internet was temperamental. Boarded late and couldn’t get organized to serve snacks.

I hate their constant delays! It’s as if I cannot confidently make plans for timing when I'm traveling with them. I slept through it, so all I can say is it was good.

There was no wheelchair or wheelchair escort at the gate..unacceptable

No WiFi No TV Bag of chips I guess it could be worse.

From bag drop to boarding, it was great. In-flight is a little different. The seats were a little uncomfortable for that long of a flight. The rest of the cabin crew except for Eva was wonderful. Eva was not friendly at all. I've had to personally encounter her twice in-flight. First time was when I had to go to the lavatory in the back of the plane, and since it was the first for me to board such tiny plane, I didn't know we were using the crew toilet. She was giving me an attitude while telling me where and how to open it since it's not the regular push to open type of door. The second one was when I had to throw trash then use the lavatory again. I asked where to throw them, and unfortunately she was the only crew in the back doodling on her phone, she had to point it out to me with an attitude then told me to wait on the carpet, which I understand because I didn't realize that, but she could have been nicer. After all, I'm a paying customer, and assisting a passenger who isn't knowledgeable about the aircraft is one of the things she's there for. The rest of the experience and crew from bag drop to in-flight were excellent except for her.

It took an hour to get my bag after landing. Not exaggerating

Boarding process on JetBlue is an absolute disgrace. I can’t believe they can’t figure out a better way to board everyone. They called people with disabilities, mosaic and group A all at once and it was a disaster

We flew halfway to our destination (NYC to Burlington) and turned around due to a mechanical issue (landing gear wouldn’t retract automatically). We turned back to JFK for JetBlue’s benefit as we landed safely at JFK and could've just as easily landed safely in Burlington on our Christmas Day flight. Instead the company directed the crew to return the plane to more easily service the aircraft. The passengers landed 3 1/2 hours later and JetBlue gave each passenger $50 for the trouble. Hardly fair compensation to be separated from family on Christmas Day.

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

The Palm Springs to Chicago O’Hare was on Time and Palm Springs airport is easier navigate. As our connection was only an approximately 50 minutes, we asked staff for insights for the Chicago airport in terms of transferring into the other terminal from which our flight left, and they were unhelpful. However, the United App was very helpful in terms of notifications and even providing directions. The Chicago to Detroit flight was significantly delayed which we all know does happen. However, there were very few updates or notifications as to why this was happening when we would actually arrive. It took nearly 30 minutes for bags to make it to baggage claim. We arrived nearly 1 hour late on a 40 minute flight.

Flight cancelled due to fog. No other flights available for 36 hours. Directed by United to book passage on another carrier, and submit receipts for reimbursement. Did that. United now states they will not reimburse. Currently out 2 grand.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Turn on the heat. Flight was way too cold from Arizona to Chicago.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Book cheap flights from Buffalo to Illinois

Recent round-trip flight deals

5/22Wed
1 stopFrontier
4h 59mBUF-ORD
5/29Wed
1 stopFrontier
4h 46mORD-BUF
$123
5/22Wed
1 stopFrontier
14h 07mBUF-MDW
5/25Sat
1 stopFrontier
23h 22mMDW-BUF
$132
5/25Sat
1 stopDelta
3h 31mBUF-MDW
5/26Sun
1 stopDelta
4h 12mMDW-BUF
$207
5/25Sat
1 stopDelta
3h 39mBUF-ORD
5/26Sun
1 stopDelta
4h 36mORD-BUF
$207
6/20Thu
1 stopSun Country Air
8h 29mBUF-ORD
6/23Sun
1 stopSun Country Air
5h 44mORD-BUF
$235
6/28Fri
1 stopSun Country Air
4h 50mBUF-ORD
6/30Sun
1 stopSun Country Air
11h 40mORD-BUF
$236
5/22Wed
nonstopUnited Airlines
1h 54mBUF-ORD
5/25Sat
nonstopUnited Airlines
1h 39mORD-BUF
$239
5/29Wed
1 stopAmerican Airlines
5h 26mBUF-ORD
6/5Wed
nonstopAmerican Airlines
1h 36mORD-BUF
$247
5/22Wed
1 stopUnited Airlines
4h 31mBUF-ORD
5/25Sat
nonstopUnited Airlines
1h 50mORD-BUF
$248
7/17Wed
1 stopAmerican Airlines
4h 33mBUF-STL
7/24Wed
1 stopAmerican Airlines
4h 51mSTL-BUF
$256

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Recent one-way flight deals

5/22Wed
1 stopFrontier
4h 59mBUF-ORD
$57
5/22Wed
1 stopFrontier
14h 07mBUF-MDW
$68
7/4Thu
1 stopDelta
7h 45mBUF-ORD
$83
8/3Sat
nonstopAmerican Airlines
1h 52mBUF-ORD
$120
5/28Tue
nonstopAmerican Airlines
1h 52mBUF-ORD
$125
5/28Tue
1 stopJetBlue
8h 35mBUF-ORD
$131
5/28Tue
1 stopDelta
3h 46mBUF-MDW
$134
7/10Wed
1 stopJetBlue
6h 00mBUF-ORD
$165
6/3Mon
nonstopUnited Airlines
1h 48mBUF-ORD
$168
6/2Sun
nonstopUnited Airlines
1h 52mBUF-ORD
$195

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Last minute flights from Buffalo to Illinois

Last minute flight, train and bus deals

5/6Mon
multi-stopFrontier
14h 51mBUF-MDW
5/11Sat
multi-stopFrontier
10h 29mMDW-BUF
$226
5/4Sat
multi-stopFrontier
11h 35mBUF-STL
5/8Wed
multi-stopFrontier
8h 53mSTL-BUF
$234
5/4Sat
multi-stopAmerican Airlines
7h 26mBUF-STL
5/8Wed
multi-stopAmerican Airlines
4h 50mSTL-BUF
$473
5/5Sun
multi-stopDelta
6h 10mBUF-STL
5/7Tue
multi-stopDelta
4h 29mSTL-BUF
$498
5/6Mon
nonstopAmerican Airlines
1h 52mBUF-ORD
5/11Sat
nonstopAmerican Airlines
1h 36mORD-BUF
$501
5/4Sat
multi-stopJetBlue
7h 01mBUF-ORD
5/8Wed
multi-stopJetBlue
5h 40mORD-BUF
$526
5/4Sat
multi-stopJetBlue
7h 01mBUF-ORD
5/8Wed
multi-stopJetBlue
5h 40mORD-BUF
$528
5/4Sat
multi-stopDelta
12h 19mBUF-STL
5/8Wed
multi-stopDelta
3h 57mSTL-BUF
$549
5/3Fri
multi-stopUnited Airlines
5h 59mBUF-STL
5/7Tue
multi-stopUnited Airlines
11h 13mSTL-BUF
$559
5/4Sat
multi-stopUnited Airlines
4h 22mBUF-ORD
5/8Wed
nonstopUnited Airlines
1h 41mORD-BUF
$565

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Buffalo - Illinois Flights

Departure:

Buffalo (BUF)United States

Return flight deals:

Illinois - Buffalo

Cabin classes:

$1,096
$551
$569
$235