$392 Find Cheap Flights from Bucharest to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bucharest to Illinois departing on 10/29. 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.
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1 adult, Economy, 0 bags

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Book Cheap Bucharest to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bucharest to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bucharest to Illinois

Wed, Aug 19 - Thu, Sep 10
Delta Logo
7:05 am - 6:01 pm
OTP
-
MDW
18h 56m
2 stops
Delta Logo
5:45 pm - 5:20 pm
MDW
-
OTP
15h 35m
2 stops
$805Delta
Tue, Aug 18 - Wed, Sep 9
Delta Logo
2:00 pm - 11:57 pm
OTP
-
ORD
17h 57m
2 stops
Delta Logo
4:50 pm - 1:00 pm
ORD
-
OTP
12h 10m
1 stop
$805Delta
Mon, Aug 17 - Mon, Aug 31
Multiple Airlines Logo
6:05 am - 11:00 am
OTP
-
ORD
12h 55m
1 stop
Multiple Airlines Logo
7:05 pm - 3:20 pm
ORD
-
OTP
12h 15m
1 stop
$806Multiple Airlines
Wed, Aug 19 - Thu, Sep 10
Delta Logo
7:05 am - 6:01 pm
OTP
-
MDW
18h 56m
2 stops
Delta Logo
5:45 pm - 5:20 pm
MDW
-
OTP
15h 35m
2 stops
$806Delta
Sun, Sep 13 - Sat, Mar 13
Multiple Airlines Logo
12:20 pm - 2:25 pm
OTP
-
ORD
34h 05m
1 stop
Multiple Airlines Logo
1:31 pm - 3:05 pm
ORD
-
OTP
17h 34m
2 stops
$807Multiple Airlines
Wed, Aug 19 - Thu, Sep 10
Delta Logo
7:05 am - 6:01 pm
OTP
-
MDW
18h 56m
2 stops
Delta Logo
5:45 pm - 5:20 pm
MDW
-
OTP
15h 35m
2 stops
$808Delta
Mon, Aug 17 - Sun, Aug 30
United Airlines Logo
6:05 am - 11:00 am
OTP
-
ORD
12h 55m
1 stop
United Airlines Logo
6:30 pm - 11:40 pm
ORD
-
OTP
21h 10m
1 stop
$810United Airlines
Wed, Aug 19 - Sat, Sep 12
United Airlines Logo
6:05 am - 11:00 am
OTP
-
ORD
12h 55m
1 stop
United Airlines Logo
6:00 pm - 6:35 pm
ORD
-
OTP
16h 35m
1 stop
$811United Airlines
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
8:15 am - 8:44 pm
OTP
-
STL
20h 29m
2 stops
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
$1,084British Airways
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
8:15 am - 8:44 pm
OTP
-
STL
20h 29m
2 stops
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
$1,085British Airways
Booking Insights

KAYAK's insights & trends for Bucharest to Illinois flights

Get data-powered insights and trends into flights from Bucharest to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Bucharest Otopeni Intl Airport to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Bucharest Otopeni Intl Airport to Illinois departing in August.

What is the cheapest Bucharest Otopeni Intl Airport to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Bucharest Otopeni Intl Airport found in the last 5 days was to Chicago, at $868 round-trip. The most popular route is from Bucharest Otopeni Intl Airport (OTP) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $868.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Bucharest Otopeni Intl Airport to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $770 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $770.

Can I save money by flying with a layover from Bucharest Otopeni Intl Airport to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $736, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Bucharest Otopeni Intl Airport to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bucharest Otopeni Intl Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bucharest Otopeni Intl Airport to Illinois is June, when tickets cost $118 (return) on average. On the other hand, the most expensive months are November and January, when the average cost of round-trip tickets is $616 and $608 respectively.

What’s the cheapest day of the week to fly from Bucharest to Illinois?

The average price of all round-trip flights from Bucharest Otopeni Intl Airport to Illinois clicked on KAYAK for each day over the last 12 months.

For Bucharest to Illinois, Saturday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Illinois back to Bucharest, the best deals are generally found on Tuesday, with Friday being the most expensive.

How far in advance should I book a flight from Bucharest Otopeni Intl Airport to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Bucharest Otopeni Intl Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Bucharest Otopeni Intl Airport to Illinois, you should book around 2 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$392
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Bucharest to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Bucharest 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 Bucharest to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bucharest to Illinois 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 Bucharest 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 from Bucharest to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bucharest 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 from Bucharest to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Bucharest to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Bucharest to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bucharest 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.
7.8
KLMOverall score based on 1534 reviews
7.2Entertainment
8.4Crew
7.3Food
7.7Comfort
7.8Boarding
Airline reviews

As always, it’s a pleasure to travel with KLM. It is one of my favorite airlines.

10.0 ExcellentGeorge, May 2026
OTP - AMS
Read more KLM reviews

As always, it’s a pleasure to travel with KLM. It is one of my favorite airlines.

It was really nice journey i personally recommend klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

Good experience, just i couldn’t connect me to the wifi

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Issue with boarding, group of passengers on a religious trip coming back to NYC kept trying to change seats, even standing when the plane was pushing back. Crew/Pilot kept very good composure, some passengers got aggravated and started venting out loud but this group created a serious security risk. Crew/Pilot should've been more stringent and called in security or remove them from the flight.

Every time I fly LOT, I swear I will never do it again. And changing planes in Warsaw is a horror. Not even remotely organized. I can only feel sorry for the staff who have to put up with it.

The seat was paid for but given for some different person .

Krakow airport is very disorganized. nice seats. friendly crew. long legs had screens. short leg did not

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

No WiFi and ok comfort in business class. Home safe I guess that’s all that really matters.

I would like to be able to choose the seat before the flight without paying extra money. Family members should not to be separated from each other.

Flight was delayed by a hour could have been better addressed. Flight was fine with great service by the flight attendants

first and above all I liked the crew; everyone was one of a kind, friendly, professional, and eager to help.

All good. Didn’t get the seats I booked online. Luckily, copassanger cooperated! Mistake- I failed to verify connecting flight seats details at Mumbai. Staff at Mumbai airport to be blamed equally!

Horrible service at the baggage claim. Stuck on plane for an hour due to taxing and no gate.

I really would like it if they provided at least some limited free wi-fi.

Excellent food and service on my international flight. Most notable is the food provided by Turkish even for coach passengers is very good.

it was a terrible experience. after 4 hours at the gate the flight was cancelled. the airline offered to rebook the flight for 26 hours later. Our team was travelling for an international competition. They missed the competition because the airline delayed them for over 30 hours. We already left the airport but the next morning we received an email stating that we were rebooked for a flight which was another 24 hours later after the already rebooked flight. We bought a ticket on Kayak. The reservation was delivered with a logo Airfareassist. I used Kayak services for over 20 years and assumed that I was dealing with a legitimate organization. Once the flight was postponed for over 40 hours, I learned that Airfareassist is a 3rd party agency whom kayak routes business to without notifying me, the customer. While I was entitled for a full refund, which was confirmed by the airline, Airfareassist only offered a partial refund and kept the difference. Kayak has failed to do a due diligence on the 3rd parties they do business with. As a result I will never do business with kayak again and am filing a complaint with the BBB and the Secretary of Transportation. This is a pure fraud and its unacceptable.

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Took forever to board. They made announcements without the loudspeaker and since the waiting room was full of screaming kids, no one could hear what they were saying. The business class sleeper seats were designed for tall skinny people. When partially reclined there was nowhere to rest my feet because they did not reach the footrest. and when fully reclined there wasn't room at my sides for my arms. Definitely one of the worst sleeper seats I have ever had.

About an hour delay but we made it to Chicago. I feel that the smaller connecting flights are the ones that cause the delays on the bigger planes that fly international.

Istanbul to Miami is a very long flight, somewhat uncomfortable, especially because the seating offers very limited space outside of business class.

Professional staff we left on time. Meals were good. Added nice amenities.

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Overall, the service was excellent, the crew verry professional, and departures and arrivals were perfect.

very small seats the scree did not work. I could not watch anything for 9 hours.

I like entertainment on the plane once I got it to work. The touch screen really had a hard time responding to touch. Boarding was excruciatingly slow. Getting through passport control was bad enough but security had a line of us not moving at all while this team of security people took their time going through every item of one single passenger, not letting anybody else advance (only one lane open while the equipment was there for 2). I would have missed my connecting flight had it not been an hour late itself. I know the airport is not the responsibility of Lufthansa or Kayak but I mention it as the reason my experience was not great.

The flight was canceled and the airline didn't even bother to notify passengers. It was Kayak that did a great job.

Working outlets at the seat would have made it better.

Transit in Munich airport was terrible, staff is rude! Sitting on row 53 was bad the food was not enough.

Flight was overbooked. Food was awful. Seats in economy class are a torture: narrow, not enough leg room. The airplanes classes are like casts: rich, average and poor…That system is a shame. Pilots were Excellent !!! Thank you!!!!

Air Canada is by far the worst Airline on the face of this planet. Only delays and overbooked flight with very poor customer support. Avoid them at all cost!

Impossible charge phone inside airplane. Entertainment system does not support charging at all. Everything else is perfect

This airline cancelled 3 of my tickets and did not even notify me of the cancellation therefoe my advice is to stay awaway!!

The flights that i booked with them were totally unreliable as they cancelled and/or switched itinereis left and right so I definitely could not recommend them. It was as also imppossible to contact them for anything-hence my poor rating

It was an hour late, but these days, that's not a big deal All went well, can't complain

Just fine. Flight was full, so that's not easy, but in general, it was a fine experience, no problems

No real business class on this plane, I had to ask for the food 1.5hrs after take off, super warm beer, very very poor service

Everything you need to know for your flight from Bucharest to Illinois

Information on your arrival and departure airports