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$343+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$516
(oojo)

One-way from

$343
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$666
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. 9% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This oojo deal was found by Cheapflights users on 9/15. 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.
Fri 11/218:20 amOTP - ORD
1 stop19h 40mLOT
Sat 11/299:55 pmORD - OTP
1 stop31h 55mLOT
Deal found 9/15$516
This Booking.com deal was found by Cheapflights users on 9/13. 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.
Sun 10/198:20 amOTP - ORD
1 stop19h 20mLOT
Tue 11/49:55 pmORD - OTP
1 stop17h 20mLOT
Deal found 9/13$578
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:35 amOTP - ORD
1 stop22h 25mLOT
Fri 11/149:55 pmORD - OTP
1 stop31h 55mLOT
Deal found 9/13$586
This LOT deal was found by Cheapflights users on 9/15. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 amOTP - ORD
1 stop16h 00mLOT
Fri 1/99:55 pmORD - OTP
1 stop19h 50mLOT
Deal found 9/15$598
This Billigflug deal was found by Cheapflights users on 9/13. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:20 amOTP - ORD
1 stop35h 30mMultiple Airlines
Tue 11/42:50 pmORD - OTP
2 stops15h 55mMultiple Airlines
Deal found 9/13$619
This oojo deal was found by Cheapflights users on 9/14. 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.
Fri 10/318:20 amOTP - ORD
1 stop19h 40mLOT
Fri 12/59:55 pmORD - OTP
1 stop19h 50mLOT
Deal found 9/14$630
This LOT deal was found by Cheapflights users on 9/15. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 amOTP - ORD
1 stop16h 00mLOT
Sun 1/119:55 pmORD - OTP
2 stops19h 50mLOT
Deal found 9/15$634
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:20 amOTP - ORD
1 stop35h 30mAmerican Airlines
Tue 11/49:18 amORD - OTP
2 stops21h 27mAmerican Airlines
Deal found 9/13$637
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:00 amOTP - ORD
1 stop15h 25mAmerican Airlines
Sun 1/1112:05 pmORD - OTP
2 stops23h 30mAmerican Airlines
Deal found 9/15$638
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:05 amOTP - STL
2 stops19h 24mAmerican Airlines
Sun 11/233:43 pmSTL - OTP
2 stops24h 02mAmerican Airlines
Deal found 9/13$643
This British Airways deal was found by Cheapflights users on 9/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:00 amOTP - STL
2 stops19h 27mBritish Airways
Fri 11/217:20 pmSTL - OTP
2 stops35h 45mBritish Airways
Deal found 9/13$645
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/167:00 amOTP - MDW
2 stops19h 25mDelta
Thu 10/2312:48 pmMDW - OTP
2 stops15h 22mDelta
Deal found 9/15$656

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 September 15, 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 10/19

8:20 am-7:40 pm

1 stop19h 20m

Chicago O'Hare Intl

Tue 11/4

9:55 pm-11:15 pm

1 stop17h 20m

$578

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 11/1

5:35 am-9:00 pm

1 stop22h 25m

Chicago O'Hare Intl

Fri 11/14

9:55 pm-1:50 pm

1 stop31h 55m

$586

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 2/18

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Sun 2/22

9:45 pm-7:35 pm

1 stop13h 50m

$636

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 11/8

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Thu 12/11

5:10 pm-3:45 pm

1 stop14h 35m

$639

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 11/12

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Wed 11/26

4:06 pm-3:45 pm

2 stops15h 39m

$639

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 11/30

4:10 pm-6:45 pm

1 stop34h 35m

Chicago O'Hare Intl

Mon 12/15

9:45 pm-11:00 pm

1 stop17h 15m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Mon 12/1

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-7:35 pm

1 stop13h 50m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 12/5

8:00 am-6:45 pm

1 stop18h 45m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-7:35 pm

1 stop13h 50m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 12/5

8:20 pm-5:00 pm

1 stop28h 40m

Chicago O'Hare Intl

Mon 12/15

9:45 pm-11:00 pm

1 stop17h 15m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 12/2

8:00 am-5:00 pm

1 stop17h 00m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-11:45 pm

1 stop18h 00m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 41 results
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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 September 15, 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.

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 September 15, 2025.
Read reviews from past customers who have flown KLM, LOT, and Turkish Airlines from Bucharest Otopeni Intl Airport to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
LOT
7.6
Good
1,114 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Turkish Airlines
7.3
Good
3,968 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Lufthansa
6.8
Okay
7,407 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
British Airways
6.7
Okay
7,361 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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.

  • How long is the flight from Bucharest Otopeni Intl Airport to Illinois?

    LOT, American Airlines, and British Airways can get you from Bucharest Otopeni Intl Airport to Illinois in just under 18h 40m. Your travel time can differ by up to 40m. Airlines will cover a distance of 5198 mi. This flight may include one or multiple stops.

  • 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

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Alternative routes for Otopeni Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$336Average$733FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$698FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$583Average$619FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$592Average$750FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$594Average$788FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$597Average$692FlexibilityNo cancel feeOn-time70%
DeltaCheapest$623Average$634FlexibilityNo cancel feeOn-timeN/A

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