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O'Hare Intl

$604+ Cheap flights from Otopeni Intl (OTP) to O'Hare Intl (ORD)

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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Bucharest Otopeni Intl to Chicago O'Hare Intl are usually found in September or February, booked 90 days in advance, depart on a Saturday or Thursday and return on a Monday

Cheap flight deals from Otopeni Intl to O'Hare Intl

Cheapest flights from Otopeni Intl to O'Hare Intl
Explore the most affordable flight options available from Otopeni Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Booking.com deal was found by Cheapflights users on 12/11. 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.
Fri 12/265:55 amOTP - ORD
1 stop15h 15mMultiple Airlines
Thu 1/84:10 pmORD - OTP
1 stop15h 40mMultiple Airlines
Deal found 12/11$720
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/265:55 amOTP - ORD
1 stop15h 15mUnited Airlines
Thu 1/810:54 amORD - OTP
2 stops19h 11mUnited Airlines
Deal found 12/11$725
This Booking.com deal was found by Cheapflights users on 12/11. 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.
Fri 12/265:55 amOTP - ORD
1 stop15h 15mLufthansa
Thu 1/89:50 pmORD - OTP
1 stop19h 15mLufthansa
Deal found 12/11$748
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/265:55 amOTP - ORD
1 stop15h 15mUnited Airlines
Fri 1/910:35 pmORD - OTP
1 stop17h 15mUnited Airlines
Deal found 12/10$792
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 12/276:00 amOTP - ORD
2 stops22h 36mDelta
Fri 1/95:20 pmORD - OTP
1 stop12h 30mDelta
Deal found 12/10$814
This British Airways deal was found by Cheapflights users on 12/10. 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.
Fri 12/268:20 pmOTP - ORD
1 stop25h 30mBritish Airways
Sat 1/109:45 pmORD - OTP
1 stop18h 00mBritish Airways
Deal found 12/10$839
This British Airways deal was found by Cheapflights users on 12/10. 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.
Fri 12/268:20 pmOTP - ORD
1 stop25h 30mBritish Airways
Tue 12/301:54 pmORD - OTP
2 stops16h 51mBritish Airways
Deal found 12/10$859

Find flight deals from Otopeni Intl to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$641
(LOT)

One-way from

$604
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$718

Good round-trip deal

$469 or less

Good one-way deal

$249 or less
Provider with most accurate pricing for Bucharest Otopeni Intl-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Bucharest Otopeni Intl-Chicago O'Hare Intl flights.
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From Bucharest Otopeni Intl to Chicago O'Hare Intl
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One-way flight from Bucharest Otopeni Intl to Chicago O'Hare Intl
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Bucharest Otopeni Intl to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Bucharest Otopeni Intl to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl to O'Hare Intl 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 December 12, 2025.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Otopeni Intl

Fly to

O'Hare Intl

Route

Depart

Return

Price

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 2/1

8:20 am-8:00 pm

1 stop19h 40m

Chicago O'Hare Intl

Tue 3/31

9:50 pm-1:50 am

1 stop20h 00m

$641

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 2/6

9:50 pm-10:05 am

1 stop20h 15m

Chicago O'Hare Intl

Sun 2/8

11:50 am-8:30 pm

1 stop24h 40m

$643

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 1/24

6:25 pm-7:55 pm

2 stops57h 30m

Chicago O'Hare Intl

Fri 2/6

9:55 pm-11:15 pm

1 stop17h 20m

$663

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 1/23

4:30 am-5:20 pm

3 stops20h 50m

Chicago O'Hare Intl

Sat 1/31

6:30 pm-2:25 pm

3 stops35h 55m

$666

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 1/24

6:00 am-2:20 pm

1 stop16h 20m

Chicago O'Hare Intl

Sat 1/31

10:24 am-12:05 pm

2 stops17h 41m

$687

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 1/25

5:35 am-8:00 pm

1 stop22h 25m

Chicago O'Hare Intl

Sun 2/1

9:55 pm-1:45 am

2 stops19h 50m

$691

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 12/17

8:15 pm-12:57 pm

2 stops48h 42m

$604

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 1/6

11:05 pm-9:12 am

3 stops42h 07m

$726

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 12/17

6:25 pm-4:20 pm

1 stop29h 55m

$730

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 12/17

9:50 pm-10:05 am

1 stop20h 15m

$790

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 15 results
1
2

Compare providers for flights from Otopeni Intl to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Otopeni Intl to O'Hare Intl in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bucharest Otopeni Intl Airport-Chicago O'Hare Intl Airport flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Bucharest Otopeni Intl Airport-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Bucharest Otopeni Intl Airport-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest Otopeni Intl Airport-Chicago O'Hare Intl Airport flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bucharest Otopeni Intl Airport-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Otopeni Intl to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 Chicago O'Hare Intl Airport

How far ahead should I book a flight from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Otopeni Intl to O'Hare Intl. Price data was last updated on December 5, 2025.

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport (average of $353). Flying from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $642). 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 ORD?

Find hourly flight availability from Otopeni Intl to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 49% on flights from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport by exploring options for tickets in the morning.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport, such as KLM, LOT, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,432 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
LOT
7.6
Good
1,146 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Turkish Airlines
7.3
Good
4,089 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,626 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,571 reviews
KLM
7.7
Good
1,432 reviews

Comfort

7.6

Boarding

7.8

Food

7.2

Crew

8.3

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to O'Hare Intl. 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 Chicago O'Hare Intl Airport?

    Departing from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport will take you 19h 40m. Airlines will cover a distance of 5198 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport round-trip?

    Turkish Airlines, at $336, was found to be the cheapest airline from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include American Airlines and KLM. You may be able to fly from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport for 53% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport one-way?

    To fly one-way, consider booking your trip with Air Serbia, which is currently one of the cheapest options available, starting at $387. Turkish Airlines flights start at $575 while deals on Lufthansa start at $615 one-way.

  • What are the cheapest flights from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport?

    Looking at all options, your cheapest flight can be booked for $249. While the most popular route (Bucharest Otopeni Intl - Chicago O'Hare Intl) can be booked for $514 on average, our data indicates $446 when flying from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport.

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

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

  • How can I find direct flights from Otopeni Intl to O'Hare Intl?

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

  • Can I find deals for business class flights from Otopeni Intl to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Otopeni Intl to O'Hare Intl 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 Chicago O'Hare Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport (average of $353). Flying from Bucharest Otopeni Intl Airport to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $642). 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

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Top 9 airlines flying from Otopeni Intl to O'Hare Intl

Discover the top 9 airlines that operate flights from Otopeni Intl to O'Hare Intl. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$493Average$768FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$822FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$571Average$815FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$581Average$695FlexibilityNo cancel feeOn-time70%
LOTCheapest$584Average$670FlexibilityNo cancel feeOn-time81%
Air FranceCheapest$621Average$660FlexibilityNo cancel feeOn-time77%
DeltaCheapest$623Average$634FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$647Average$819FlexibilityNo cancel feeOn-time76%

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