What airlines fly to Illinois?

LOT, Lufthansa and Turkish Airlines are the top three most popular airlines that fly to Illinois from Bucharest Otopeni Intl Airport according to our data. LOT is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Bucharest Otopeni Intl to Illinois?

Air Serbia, Delta, and Air France are the most popular carriers operating from Bucharest Otopeni Intl to Illinois

How many operators does momondo search for flights from Bucharest Otopeni Intl Airport to Illinois?

There are 6 operators available for flights from Bucharest Otopeni Intl Airport to Illinois as of September 2026.

How old do you have to be to fly from Bucharest Otopeni Intl Airport to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bucharest Otopeni Intl Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$430 Cheap Flights from Bucharest Otopeni Intl Airport to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Bucharest Otopeni Intl Airport to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:05 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Amsterdam Schiphol

1:55 pm - 2:10 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 15m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

$757Delta

Tue, Oct 20 - Mon, Nov 2

7:05 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Amsterdam Schiphol

9:59 am - 2:10 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

20h 11m2 stops Minneapolis St Paul Paris Charles de Gaulle

$757Delta

Thu, Oct 22 - Wed, Nov 4

6:00 am - 2:10 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Frankfurt am Main

9:50 pm - 1:00 amORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

19h 10m1 stop Munich Franz Josef Strauss

$757Lufthansa

Sat, Oct 31 - Fri, Nov 13

2:35 pm - 7:55 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

37h 20m2 stops Warsaw Frederic Chopin Krakow J. Paul II Balice

9:50 pm - 5:45 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

11h 55m1 stop Warsaw Frederic Chopin

$762LOT

Sun, Dec 13 - Thu, Dec 24

6:30 pm - 7:55 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

33h 25m2 stops Warsaw Frederic Chopin Krakow J. Paul II Balice

9:50 pm - 1:45 amORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

19h 55m1 stop Warsaw Frederic Chopin

$762LOT

Sun, Dec 13 - Sat, Dec 26

8:35 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

13h 40m1 stop Amsterdam Schiphol

4:50 pm - 5:20 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 30m1 stop Amsterdam Schiphol

$765KLM

Tue, Sep 29 - Wed, Oct 21

8:35 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

13h 40m1 stop Amsterdam Schiphol

4:15 pm - 5:40 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

17h 25m1 stop Amsterdam Schiphol

$765KLM

Tue, Sep 29 - Tue, Oct 20

6:05 am - 11:00 amOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

12h 55m1 stop Frankfurt am Main

3:35 pm - 12:00 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

12h 25m1 stop Munich Franz Josef Strauss

$767Lufthansa

Mon, Oct 5 - Sun, Oct 18

8:25 am - 8:30 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

20h 05m2 stops London Heathrow Philadelphia

2:31 pm - 3:10 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 39m2 stops New York John F Kennedy Intl London Heathrow

$823British Airways

Fri, Nov 20 - Fri, Dec 11

8:25 am - 8:30 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

20h 05m2 stops London Heathrow Philadelphia

2:31 pm - 3:10 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 39m2 stops New York John F Kennedy Intl London Heathrow

$824British Airways

Fri, Nov 20 - Fri, Dec 11

Cheap last minute flights

Enter your travel dates to find the best prices.

7:05 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Amsterdam Schiphol

10:30 am - 2:10 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

19h 40m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$842Delta

Tue, Sep 22 - Fri, Nov 27

7:05 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Amsterdam Schiphol

6:25 pm - 11:15 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

20h 50m1 stop Paris Charles de Gaulle

$842Delta

Tue, Sep 22 - Fri, Nov 27

7:05 am - 4:14 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

17h 09m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

1:55 pm - 1:00 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

15h 05m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

$864KLM

Sat, Sep 19 - Mon, Sep 21

7:05 am - 2:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 10m1 stop Amsterdam Schiphol

4:50 pm - 5:20 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 30m1 stop Amsterdam Schiphol

$873KLM

Sat, Sep 19 - Wed, Sep 23

6:30 pm - 3:10 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

28h 40m1 stop Warsaw Frederic Chopin

9:50 pm - 11:25 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

17h 35m1 stop Warsaw Frederic Chopin

$874LOT

Mon, Sep 21 - Thu, Nov 26

8:20 am - 3:10 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

14h 50m1 stop Warsaw Frederic Chopin

9:50 pm - 5:45 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

11h 55m1 stop Warsaw Frederic Chopin

$896LOT

Tue, Sep 22 - Wed, Nov 25

6:15 am - 12:55 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

14h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

9:50 pm - 1:00 amORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

19h 10m1 stop Munich Franz Josef Strauss

$1,004Lufthansa

Mon, Sep 21 - Thu, Nov 26

6:15 am - 2:05 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

15h 50m1 stop Munich Franz Josef Strauss

6:10 pm - 11:55 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

21h 45m1 stop Frankfurt am Main

$1,022Lufthansa

Sat, Sep 19 - Sat, Dec 5

12:20 pm - 9:40 amOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

29h 20m1 stop Istanbul

11:45 am - 12:25 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

16h 40m1 stop Istanbul

$1,925Turkish Airlines

Sat, Sep 19 - Sun, Dec 20

3:55 pm - 6:15 pmOTP Bucharest Otopeni Intl-ORD Chicago O'Hare Intl

34h 20m1 stop Istanbul

11:45 am - 8:50 pmORD Chicago O'Hare Intl-OTP Bucharest Otopeni Intl

25h 05m1 stop Istanbul

$2,070Turkish Airlines

Sun, Sep 20 - Sun, Dec 20

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KLM flights from Bucharest Otopeni Intl Airport to Illinois

Our best KLM deals on Bucharest Otopeni Intl Airport to Illinois flight tickets

KLM

Sep 29

OTP8:35 amBucharest Otopeni Intl

13h 40m

1 stop

ORD2:15 pmChicago O'Hare Intl

Oct 20

ORD4:15 pmChicago O'Hare Intl

17h 25m

1 stop

OTP5:40 pmBucharest Otopeni Intl

$765

KLM

Sep 29

OTP8:35 amBucharest Otopeni Intl

13h 40m

1 stop

ORD2:15 pmChicago O'Hare Intl

Oct 28

ORD5:25 pmChicago O'Hare Intl

15h 00m

1 stop

OTP3:25 pmBucharest Otopeni Intl

$766

KLM

Sep 29

OTP8:35 amBucharest Otopeni Intl

17h 44m

2 stops

MDW6:19 pmChicago Midway

Oct 21

MDW1:27 pmChicago Midway

15h 33m

2 stops

OTP1:00 pmBucharest Otopeni Intl

$767

Delta flights from Bucharest Otopeni Intl Airport to Illinois

Our best Delta deals on Bucharest Otopeni Intl Airport to Illinois flight tickets

Delta

Oct 15

OTP7:05 amBucharest Otopeni Intl

15h 10m

1 stop

ORD2:15 pmChicago O'Hare Intl

Oct 29

ORD12:30 pmChicago O'Hare Intl

18h 40m

2 stops

OTP2:10 pmBucharest Otopeni Intl

$757

Delta

Sep 29

OTP7:05 amBucharest Otopeni Intl

15h 10m

1 stop

ORD2:15 pmChicago O'Hare Intl

Oct 28

ORD1:23 pmChicago O'Hare Intl

17h 47m

2 stops

OTP2:10 pmBucharest Otopeni Intl

$760

Delta

Sep 29

OTP7:05 amBucharest Otopeni Intl

17h 08m

2 stops

ORD4:13 pmChicago O'Hare Intl

Oct 20

ORD10:24 amChicago O'Hare Intl

18h 21m

2 stops

OTP12:45 pmBucharest Otopeni Intl

$762

momondo Fare Finder

Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Tue 10/20

7:05 am-2:15 pm

1 stop15h 10m

Chicago O'Hare Intl

Mon 11/2

1:55 pm-2:10 pm

2 stops16h 15m

$757

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Thu 10/22

7:05 am-2:15 pm

1 stop15h 10m

Chicago O'Hare Intl

Wed 11/4

9:59 am-2:10 pm

2 stops20h 11m

$757

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Sat 10/31

6:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Fri 11/13

9:50 pm-1:00 am

1 stop19h 10m

$757

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Sun 12/13

2:35 pm-7:55 pm

2 stops37h 20m

Chicago O'Hare Intl

Thu 12/24

9:50 pm-5:45 pm

1 stop11h 55m

$762

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Sun 12/13

6:30 pm-7:55 pm

2 stops33h 25m

Chicago O'Hare Intl

Sat 12/26

9:50 pm-1:45 am

1 stop19h 55m

$762

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Tue 9/29

8:35 am-2:15 pm

1 stop13h 40m

Chicago O'Hare Intl

Wed 10/21

4:50 pm-5:20 pm

1 stop16h 30m

$765

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Tue 9/29

8:35 am-2:15 pm

1 stop13h 40m

Chicago O'Hare Intl

Tue 10/20

4:15 pm-5:40 pm

1 stop17h 25m

$765

Quickest round-trip

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Mon 10/5

6:05 am-11:00 am

1 stop12h 55m

Chicago O'Hare Intl

Sun 10/18

3:35 pm-12:00 pm

1 stop12h 25m

$767

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Fri 11/20

8:25 am-8:30 pm

2 stops20h 05m

Chicago O'Hare Intl

Fri 12/11

2:31 pm-3:10 pm

2 stops16h 39m

$823

BucharestChicago

OTP Bucharest Otopeni Intl - ORD Chicago O'Hare Intl

OTPORD

Bucharest Otopeni Intl

Fri 11/20

8:25 am-8:30 pm

2 stops20h 05m

Chicago O'Hare Intl

Fri 12/11

2:31 pm-3:10 pm

2 stops16h 39m

$824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Bucharest Otopeni Intl Airport 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

Prices

Airlines

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Bucharest Otopeni Intl Airport is in February. Flight prices, which tend to average around $659, 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 February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $702.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Bucharest Otopeni Intl Airport to Illinois is on a Saturday when prices can be found for as low as $469. Flights from Bucharest Otopeni Intl Airport to Illinois on a Thursday will generally be more expensive and average around $770. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Fly from Bucharest Otopeni Intl to Chicago O'Hare Intl for the best Bucharest Otopeni Intl - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from Bucharest Otopeni Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $865 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Bucharest Otopeni Intl Airport for as low as $589 on momondo.

What cabin class options are available on Bucharest Otopeni Intl Airport to Illinois flights?

There is only 1 cabin class available to choose from on Bucharest Otopeni Intl Airport to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Bucharest Otopeni Intl Airport to Illinois flights?

No. A direct flight is the cheapest option for a flight between Bucharest Otopeni Intl Airport to Illinois.

Cheap Bucharest Otopeni Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Bucharest Otopeni Intl Airport to Illinois

Best Price Found	$430
Fastest flight time	14h 30m
Direct flights	None

The best one-way flight to Illinois from Bucharest Otopeni Intl Airport in the past 72 hours is $430. The best round-trip flight deal from Bucharest Otopeni Intl Airport to Illinois found on momondo in the last 72 hours is $757.

The fastest flight from Bucharest Otopeni Intl Airport to Illinois takes 14h 30m

There are no direct flights from Bucharest Otopeni Intl Airport to Illinois. There are no popular flight routes from Bucharest Otopeni Intl Airport to Illinois.

Search flight deals

Frequently asked questions about flying from Bucharest Otopeni Intl Airport to Illinois

When did momondo last update prices for flights from Bucharest Otopeni Intl Airport to Illinois?
Prices for flights from Bucharest Otopeni Intl Airport to Illinois were last updated today.
How many operators does momondo search for flights from Bucharest Otopeni Intl Airport to Illinois?
There are 6 operators available for flights from Bucharest Otopeni Intl Airport to Illinois as of September 2026.
How old do you have to be to fly from Bucharest Otopeni Intl Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bucharest Otopeni Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Bucharest Otopeni Intl Airport to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Bucharest Otopeni Intl Airport to Illinois is Airbus A330, representing 85.71% of all bookings. The subsequent popular model is Airbus A330-200 at 14.29%.

Best airlines flying from Bucharest Otopeni Intl Airport to Illinois

Compare and see reviews for airlines that fly from Bucharest Otopeni Intl Airport to Illinois with momondo

Airline	Rating	Free Cancellation	Price
HiSky	PriceFrom $426	Free Cancellation	Rating 0.0	Search HiSky flights
Lufthansa	PriceFrom $603	Free Cancellation	Rating 6.8 8,227 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $608	Free Cancellation	Rating 7.4 4,466 reviews	Search Turkish Airlines flights
KLM	PriceFrom $657	Free Cancellation	Rating 7.8 1,578 reviews	Search KLM flights
British Airways	PriceFrom $660	Free Cancellation	Rating 6.7 8,229 reviews	Search British Airways flights
LOT	PriceFrom $672	Free Cancellation	Rating 7.6 1,197 reviews	Search LOT flights

Why use momondo?

Why should I use momondo to find a flight deal from Bucharest to Illinois?

It is quick and easy to find Bucharest to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Bucharest to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Bucharest which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Bucharest to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Bucharest.

I’m not ready to book a flight from Bucharest to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Bucharest to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.