HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$318+ Cheap flights from Otopeni Intl (OTP) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Otopeni Intl to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Otopeni Intl to Illinois

Keep the following information in mind while searching for Otopeni Intl to Illinois flight deals. Data was last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$601
(Scandinavian Airlines)

One-way from

$318
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$608
Provider with most accurate pricing for Bucharest (BUH)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest (BUH)-Chicago (CHI) flights.
Search Deals
From Bucharest Otopeni Intl to Illinois
Search Deals
One-way flight from Bucharest Otopeni Intl to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Otopeni Intl to Illinois

Cheapest flights from Otopeni Intl to Illinois
Explore the most affordable flight options available from Otopeni Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/159:25 pmOTP - ORD
1 stop26h 45mScandinavian Airlines
Thu 9/187:15 pmORD - OTP
1 stop17h 55mScandinavian Airlines
Deal found 4/16$601
This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/166:30 pmOTP - ORD
1 stop33h 10mLOT
Tue 9/165:10 pmORD - OTP
2 stops16h 35mLOT
Deal found 4/17$603
This KLM deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/64:50 pmOTP - ORD
1 stop29h 20mMultiple Airlines
Wed 7/95:10 pmORD - OTP
1 stop19h 00mMultiple Airlines
Deal found 4/17$618
This Booking.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/229:15 pmOTP - ORD
1 stop26h 40mBritish Airways
Fri 6/69:15 pmORD - OTP
1 stop18h 35mBritish Airways
Deal found 4/17$620
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/67:00 amOTP - ORD
1 stop15h 10mDelta
Tue 7/810:10 amORD - OTP
2 stops18h 00mDelta
Deal found 4/17$621
This KLM deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:05 pmOTP - ORD
1 stop28h 05mKLM
Mon 9/154:50 pmORD - OTP
1 stop22h 55mKLM
Deal found 4/17$623
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/137:00 amOTP - MDW
2 stops19h 41mDelta
Wed 7/910:35 amMDW - OTP
2 stops17h 35mDelta
Deal found 4/16$624
This flugladen.de deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/287:00 amOTP - MDW
2 stops18h 19mKLM
Thu 5/81:08 pmMDW - OTP
2 stops18h 17mKLM
Deal found 4/16$654
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:00 amOTP - ORD
2 stops17h 04mUnited Airlines
Thu 9/1812:50 pmORD - OTP
2 stops16h 10mUnited Airlines
Deal found 4/17$698
This Air France deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:40 amOTP - ORD
1 stop14h 20mAir France
Fri 10/245:10 pmORD - OTP
1 stop14h 40mAir France
Deal found 4/17$699
This Air Canada deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/46:00 amOTP - ORD
2 stops35h 52mAir Canada
Thu 7/103:35 pmORD - OTP
2 stops19h 00mAir Canada
Deal found 4/17$760
This SWISS deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/154:10 pmOTP - ORD
2 stops27h 50mSWISS
Wed 5/287:05 pmORD - OTP
1 stop22h 15mSWISS
Deal found 4/17$763

Cheapflights Fare Finder

Customize your flight search to find flights from Otopeni Intl to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Illinois that are best for you.

Fly from

Otopeni Intl

Fly to

Illinois

Route

Depart

Return

Price

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 6/15

9:25 pm-4:10 pm

1 stop26h 45m

Chicago O'Hare Intl

Thu 9/18

7:15 pm-9:10 pm

1 stop17h 55m

$601

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Mon 6/16

6:30 pm-7:40 pm

1 stop33h 10m

Chicago O'Hare Intl

Tue 9/16

5:10 pm-5:45 pm

2 stops16h 35m

$603

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 6/6

4:50 pm-2:10 pm

1 stop29h 20m

Chicago O'Hare Intl

Wed 7/9

5:10 pm-8:10 pm

1 stop19h 00m

$618

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 5/22

9:15 pm-3:55 pm

1 stop26h 40m

Chicago O'Hare Intl

Fri 6/6

9:15 pm-11:50 pm

1 stop18h 35m

$620

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 6/6

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Tue 7/8

10:10 am-12:10 pm

2 stops18h 00m

$621

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 6/17

6:05 pm-2:10 pm

1 stop28h 05m

Chicago O'Hare Intl

Tue 9/16

4:20 pm-3:25 pm

1 stop15h 05m

$623

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

Fri 6/13

7:00 am-6:41 pm

2 stops19h 41m

Chicago Midway

Wed 7/9

10:35 am-12:10 pm

2 stops17h 35m

$624

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

Mon 4/28

7:00 am-5:19 pm

2 stops18h 19m

Chicago Midway

Thu 5/8

1:08 pm-3:25 pm

2 stops18h 17m

$654

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 6/18

6:00 am-3:04 pm

2 stops17h 04m

Chicago O'Hare Intl

Fri 9/19

5:55 pm-5:55 pm

2 stops16h 00m

$698

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 8/15

8:40 am-3:00 pm

1 stop14h 20m

Chicago O'Hare Intl

Fri 10/24

5:10 pm-3:50 pm

1 stop14h 40m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from Otopeni Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Otopeni Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Bucharest Otopeni Intl Airport to Illinois

What is the cheapest month to book a flight from Bucharest Otopeni Intl Airport to Illinois?

Currently, August is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Illinois (average of $245). Flying from Bucharest Otopeni Intl Airport to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from OTP to IL?

Find hourly flight availability from Otopeni Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

When flying from Bucharest Otopeni Intl Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 17, 2025.
Read reviews from past customers who have flown Emirates, Delta and KLM from Bucharest to Illinois. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Emirates
8.0
Very good
3,200 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Delta
8.0
Very good
7,916 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
KLM
7.8
Good
1,327 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
LOT
7.6
Good
1,065 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Austrian Airlines
7.6
Good
775 reviews
Emirates
8.0
Very good
3,200 reviews

Boarding

8.1

Entertainment

8.2

Food

7.8

Crew

8.3

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Bucharest Otopeni Intl Airport to Illinois one-way?

    For one-way options, check prices for Air Serbia. According to our data, you can fly for as low as $428. Users have also found prices from $541 and $649 on ITA Airways and Lufthansa, respectively.

  • What are the most popular routes from Bucharest Otopeni Intl Airport to Illinois?

    The most popular route from Bucharest Otopeni Intl Airport to Illinois is Bucharest Otopeni Intl - Chicago O'Hare Intl. You may also consider Bucharest Otopeni Intl - Chicago Midway or Bucharest Otopeni Intl - Lambert-St Louis.

  • Can I find deals for flights from Otopeni Intl to Illinois that include hotel bookings?

    Yes. In addition to deals on Otopeni Intl to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Otopeni Intl to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Otopeni Intl to Illinois.

  • Can I find deals for business class flights from Otopeni Intl to Illinois?

    Yes. Cheapflights offers flight deals from Otopeni Intl to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Bucharest Otopeni Intl Airport to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Illinois (average of $245). Flying from Bucharest Otopeni Intl Airport to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Otopeni Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Otopeni Intl to John F Kennedy Intl flights
Otopeni Intl to Newark flights
Otopeni Intl to LaGuardia flights
Otopeni Intl to Los Angeles flights
Otopeni Intl to Dallas/Fort Worth flights
Otopeni Intl to O'Hare Intl flights
Otopeni Intl to Miami flights
Otopeni Intl to Seattle flights
Otopeni Intl to Detroit flights
Otopeni Intl to Boston flights
Otopeni Intl to Dulles Intl flights
Otopeni Intl to Baltimore flights
Otopeni Intl to Fort Lauderdale flights
Otopeni Intl to Reagan-National flights
Otopeni Intl to West Palm Beach flights
Otopeni Intl to San Francisco flights
Otopeni Intl to Hobby flights
Otopeni Intl to Las Vegas flights
Otopeni Intl to Atlanta flights
Otopeni Intl to Honolulu flights
Otopeni Intl to Orlando flights
Otopeni Intl to Salt Lake City flights
Otopeni Intl to San Diego flights
Otopeni Intl to George Bush Intcntl flights
Otopeni Intl to Sky Harbor Intl flights
Otopeni Intl to Philadelphia flights
Otopeni Intl to Portland flights
Otopeni Intl to Santa Ana flights
Otopeni Intl to Denver flights
Otopeni Intl to Tampa flights
Otopeni Intl to Cleveland flights
Otopeni Intl to Boise flights
Otopeni Intl to Cincinnati flights
Otopeni Intl to Austin flights
Otopeni Intl to Charlotte flights
Otopeni Intl to Kansas City flights
Otopeni Intl to Kailua-Kona flights
Otopeni Intl to Raleigh flights
Otopeni Intl to San Jose flights
Otopeni Intl to Nashville flights
Otopeni Intl to Albany flights
Otopeni Intl to Des Moines flights
Otopeni Intl to Pittsburgh flights

Top 9 airlines flying from Otopeni Intl to Illinois

Discover the top 9 airlines that operate flights from Otopeni Intl to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$336Average$684FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$691FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$580Average$700FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$582Average$686FlexibilityNo cancel feeOn-time81%
DeltaCheapest$585Average$634FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$593Average$847FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$594Average$815FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.