$109 Find Cheap Flights from Buffalo to Illinois - Compare and Save

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Cheap Flights from Buffalo to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Chicago
Chicago1 stop$227
Moline
Moline1 stop$379
Chicago
Chicago1 stop$227
Moline
Moline1 stop$379
Booking Insights

Price, demand and travel trends for Buffalo to Illinois flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Buffalo to Illinois recently?

The cheapest fares from Buffalo to Illinois on KAYAK in the last week were to Chicago O'Hare Intl (ORD) from $227 round-trip and to Chicago Midway (MDW) from $339 round-trip.

How do fares into airports in Illinois compare?

According to KAYAK data from the last 12 months, the cheapest airports to fly into Illinois from Buffalo are:

• Chicago O'Hare Intl (ORD) (avg. price $349)
• Greater Peoria (PIA) (avg. price $369)
• Chicago Midway (MDW) (avg. price $382)

Are flights from Buffalo to Illinois cheaper or more expensive than last year?

Fares from Buffalo to Illinois are about 6% higher than they were in November last year, averaging $369 round-trip.

What's the cheapest month to fly from Buffalo to Illinois?

January is typically the cheapest month to fly from Buffalo to Illinois, with round-trip fares averaging $286. March and November are usually the most expensive, averaging $473 and $412, respectively.

How do fares from Buffalo to Illinois vary by day of the week?

On average, Saturday is the cheapest day to fly from Buffalo to Illinois and Sunday is the most expensive. Looking at the past 12 months of KAYAK data, it's 47% more expensive to fly on a Sunday compared to Saturday.

What's the best time of day to fly from Buffalo to Illinois?

It's cheapest to fly to Illinois in the afternoon with average prices of $358. The night is the most expensive time to fly, with average prices of $460.

What's the best time to book a flight from Buffalo to Illinois?

Book your flights 20 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 67% compared to booking at the last minute (within 2 weeks of departure).

Key details for Buffalo to Illinois flights

Low season

January

Cheapest flight

$109
Beat the crowds with an average 41% drop in travelers.
The most popular month to fly with an average 47% increase in travelers.
One-way flight from Buffalo to Chicago O'Hare Intl Airport

Your Buffalo to Illinois flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Buffalo to Illinois?

    Yes. Fares from Buffalo to Illinois are low right now. As a rule of thumb, a round-trip under $297 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Buffalo to Illinois?

    Over the past 12 months, round-trip fares from Buffalo to Illinois have typically cost between $297 and $466.

  • What are the main airports serving Illinois?

    There are 17 airports in Illinois. 72% of KAYAK users choose Chicago O'Hare Intl (ORD) as their arrival airport, while 25% choose Chicago Midway (MDW).

  • Which airlines fly nonstop from Buffalo to Illinois?

    Based on the flight schedule for the next 3 months, 3 airlines offer nonstop flights on this route:

    • United Airlines
    • Southwest
    • American Airlines

  • Which destinations in Illinois can I fly nonstop from Buffalo?

    Based on the flight schedule for the next 3 months, you can fly nonstop from Buffalo to just one destination in Illinois: Chicago.

  • Is it cheaper to fly with a layover from Buffalo to Illinois?

    Yes, nonstop flights from Buffalo to Illinois average $366 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • New York John F Kennedy Intl (JFK) (avg. price $205)
    • Boston Logan Intl (BOS) (avg. price $250)
    • Atlanta Hartsfield-Jackson (ATL) (avg. price $251)

  • How long is a flight from Buffalo to Illinois?

    Nonstop flights from Buffalo to Illinois take 2h 09m on average. The fastest scheduled flight takes 1h 45m, flying into Chicago Midway (MDW).

  • Which cabin classes are available from Buffalo to Illinois?

    On flights from Buffalo to Illinois you can book Economy Class or First Class.

  • What are some popular landmarks around Illinois?

    Illinois is home to many popular sights. KAYAK travelers' favorites include:

    • Magnificent Mile
    • Grant Park
    • Soldier Field
    • River North

  • What are the earliest and latest flights from Buffalo to Illinois?

    The earliest nonstop flight from Buffalo to Illinois departs at 5:56 am and the latest leaves at 9:45 pm. Nonstop flights take about 2h 09m.

Your guide to booking Buffalo to Illinois flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 20 weeks before your trip. KAYAK data shows fares in this window are around 67% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • Flexible with your dates? Fly in January to save some money. It's typically the cheapest month on this route, while flights in March will cost you the most.
  • Fly out on a Saturday to get the cheapest fares. Avoid Sunday flights, which are about 47% more expensive.
  • If you're watching your budget, fly into Chicago O'Hare Intl (ORD) which has the lowest average airfare in the region. Just remember to budget for any onward travel by bus, car or domestic flight.
  • Start your trip in Chicago, the most popular destination in Illinois. From there, it's easy to continue on to other popular spots such as Rosemont, Schaumburg and Champaign.
  • Time or money? If speed matters most, fly from Buffalo to Chicago Midway (MDW). If you're after the lowest fares, Chicago O'Hare Intl (ORD) is usually your best bet.

Reviews of the 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
SouthwestOverall score based on 4220 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
Airline reviews

Delayed over 3 hours, extremely rough landing on all four flights. Would not recommend

2.0 MediocreKevin, Oct 2026
Read more Southwest reviews

Delayed over 3 hours, extremely rough landing on all four flights. Would not recommend

The entire crew were wonderful but 1 flight attendant stood out with his sense of humor on the microphone. I told him as much as I exited the plane.

Maybe different snack selection. To much sodium in them. I know refrigerators are not available but there has to be healthier items.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

It went well. Plane wasn't full. Will be great when assigned seating is in place

My bag was damaged and is now missing a wheel. I tried to buy a claim in on the website but it would not accept my confirmation # for submission. Other than that, everything else was good!

As always it was a pleasure to fly on southwest.

Excellent! There was a delay due to the weather and they did all they could do to keep us comfortable & updated. Thank you!

Couldn't connect to the internet and movies. Needed help.

We left nearly 3 hours late...so that was not a good experience. We boarded and then ended up about 1 hour stuck at the gate. Not a good experience.

I appreciate how quickly and kindly the people at the gate at DCA accommodated several of us who wanted to switch from the 6pm flight to the 5pm flight at the last minute. The flight crew was helpful to us too (dealing with luggage).

Waited on tarmac to take off for approximately 15-25 minutes. When landing, the taxi to our gate took a similar amount of time. This happened on both of my United flights.

Fine except from Chicago to moline three different gate changes and flight times

When booking, the connection times seem fine. But in reality, my two connections were cut short by the first leg being delayed due to issues at the destination (too much traffic going into SFO, ORD) and it became extremely stressful.

There was not even a single time where united airlines from lga has made to the gate straight , 1 hr if delay today

The seats on this flight weren’t as comfortable as we had expected. Even leaned back these seats left us feeling crappy in our backs. Also we had to use our own tablets for movies, but nothing in the seats in front of us to hold the tablets up.

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

The staff was very friendly. The seats seemed quite small. Overall the flight was pleasant.

Their app did not recognize my Aeroplan frequent flyer number and would not allow me access to my boarding card. Ground staff was readily available at the airport to print it out to me.

Both ways the people in the rear section of the plane were forced to check their carry on bags. I would understand this if the size and number of bags were not limited, but I do not understand why there is not room for one small overhead bag per person, even if the flight is full. I could watch the baggage handlers loading the extra luggage from my window and I’m pretty sure mine wouldn’t have survived undamaged, even though it is new and sturdy.

Great flight. Best in years. Very clean craft. Easy boarding. Communicative pilot. Friendly flight attendants. Absolutely smooth take off, in flight and landing. Very comfortable seats. Smoothest flight I've experienced in years. THANK YOU JET BLUE!

Mostly good, flight take off in time and land earlier I can’t ask for more..

The plane was FREEZING COLD. Like I was wishing I'd brought gloves. Is this how JetBlue sells more blankets? Other than that, all fine. Crew just as nice as usual. A flight attendant asked (who? The pilot?) to have the air turned down for a great number of passengers who were as cold as I was. They (again -- who is "they") did not.

Flight was fine, but I was annoyed to have to pay for luggage again. We had paid for our luggage on our first two connecting flights with SATA Azores Airlines, but had to pay for luggage again with JetBlue at JFK airport. For one trip we paid over $500 for two suitcases to travel from Azores to San Francisco.

Uncomfortable seat. No help for my disability. Staff refused to help me put my carry-on in the overhead bin. So I had to check the bag.

Jet Blue cancelled my flight after I had boarded. They attempted to rebook me for a new flight two days later. I was able to rebook with a different airline, but not until the next morning. As such, I was forced to get an expensive hotel and missed important work meetings Monday morning. I am very disappointed with the customer service and will be pursuing full reimbursement for my hotel cost.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

I volunteered to let them put my carry on suitcase in the baggage storage area. But when we landed I was told it was being unloaded IN A DIFFERENT TERMINAL! I had to walk (painful for me) a long way to retrieve my bag and my ride had to move from the waiting area they were in to a totally different one. Not happy.

In-flight staff was very helpful and excellent. However, the flight was delayed by 90 minutes. Also the boarding process should be expedited in case of delayed flights. This will help the passengers trying to make international connections.

It was OK, but it was delayed about an hour, and my luggage didn't arrive till about an hour and a half after the flight

Another American Airlines flight, another significant delay. At least this one wasn't canceled like many others have been. This time we sat on the runway at LaGuardia for 2.5 hours. By my count that is 7 American flights the last three months that have been delayed 2 hours or more or canceled entirely.

Our flight from Chicago to Des Moines was the problem flight due to a dismissive flight attendant. His conduct was unnecessary and unprofessional.. I will avoid using Americam Airlines again because of the situation. Very disappointing.

On time departure & early arrival. Made a long day much better.

The flight de-boarded after being informed of a 3 hour delay. The gate agent said we could go to lounge. The flight ended up boarding 20 minutes later and I missed it.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

It was good experience this time. The flight was on time.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

Maximizing profits is one way to a healthy bottom line, the other is repeat business and referrals from satisfied customers. Frontier has clearly chosen the former. One of many examples: Family emergency required me to cut trip short. Headed to the airport to fly standby for the return trip I had already paid for (yes I understand prices vary with demand etc). Was told there is no standby and that I would need to pay for, despite what it's called by the company, what amounts to a new ticket. And surprise surprise, there turned out to be dozens of empty seats on that flight. To say nothing of the sleazy third and fourth party resellers, the flight/ticket insurance I elected and thought I had paid for that mysteriously wasn't there when I needed it before I left, and on and on with third world sleazy management decisions. The inflight coffee (that I had to pay for) was very good though.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

We were delayed three times ,and that destroyed my plans, and reservations

Be prepared for crowds and chaos upon arrival at the Orlando airport

More options for your flight from Buffalo to Illinois

Complete your trip to Illinois with a hotel stay or car rental