Cheap flights from Chicago (CHI) to Otopeni Intl (OTP) from $223

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 4/24. 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.
CHI — OTP
Mar 24 — Mar 311

The best prices from Chicago to Bucharest Otopeni Intl are usually found in February or January, booked 66 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Chicago to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Otopeni Intl (OTP). 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 March 19, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$546

One-way from

$506
High demand for flights, 37% potential price rise
Best time to find cheap flights, 38% potential price drop
From Chicago (CHI) to Bucharest Otopeni Intl
One-way flight from Chicago (CHI) to Bucharest Otopeni Intl

What is the cheapest day to fly round-trip from Chicago to Bucharest Otopeni Intl Airport?

Saturday flights are generally found to be more expensive for flights from Chicago to Bucharest Otopeni Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Bucharest Otopeni Intl Airport.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 29 days in advance, which can save you up to 55% on flights from Chicago to Bucharest Otopeni Intl Airport compared to booking the week you need them. Waiting 29 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $544. For sooner than that we have options available in the next 3 days from $921.

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

January is one of the best times of the year to fly to Bucharest Otopeni Intl Airport from Chicago. Prices for January average $888 per person but you can even find prices for as low as $424. The most expensive prices can be found in the month of June. Opting for a January flight can save you 75% on your journey compared to booking in June

When is the cheapest time to fly from Chicago to Bucharest Otopeni Intl Airport (CHI - OTP)?

It’s typically best to fly out from Chicago to Bucharest Otopeni Intl Airport in the morning. Doing so could potentially save you 24% on the flight price compared to flying at noon, which is usually more expensive.

Cheap Turkish Airlines flights from Chicago to Otopeni Intl

Explore cheap flight options specifically provided by Turkish Airlines for the route between Chicago and Otopeni Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Consider these cheap Turkish Airlines flights we've found departing from Chicago to Bucharest. Make sure to check back often as deals are often changing.
Wed 8/288:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Wed 9/189:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$535
Sun 3/3111:35 amORD - OTP
1 stop19h 00mTurkish Airlines
Mon 4/89:30 amOTP - ORD
1 stop16h 15mTurkish Airlines
Deal found 3/18$536
Mon 4/88:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Mon 4/229:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$560
Thu 9/511:25 amORD - OTP
1 stop24h 55mTurkish Airlines
Thu 10/39:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$561
Sun 4/218:30 pmORD - OTP
1 stop27h 40mTurkish Airlines
Mon 5/209:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/18$627
Sat 8/318:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Sun 9/159:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$702
Sun 4/288:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Wed 6/129:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$803
Fri 4/2611:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Wed 6/123:55 pmOTP - ORD
1 stop25h 45mTurkish Airlines
Deal found 3/18$841

Cheap LOT flights from Chicago to Otopeni Intl

Explore cheap flight options specifically provided by LOT for the route between Chicago and Otopeni Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a gander at the lowest prices we've found on LOT flights from Chicago to Bucharest. Make sure to examine the flight information before completing your reservation.
Tue 4/99:40 pmORD - OTP
1 stop20h 10mLOT
Tue 4/166:15 pmOTP - ORD
1 stop33h 25mLOT
Deal found 3/18$589
Tue 5/79:40 pmORD - OTP
1 stop17h 30mLOT
Wed 5/158:20 amOTP - ORD
1 stop14h 50mLOT
Deal found 3/18$796
Sun 5/59:45 pmORD - OTP
2 stops20h 05mLOT
Sat 5/182:35 pmOTP - ORD
2 stops32h 35mLOT
Deal found 3/18$877

Cheap Chicago to Otopeni Intl flights in March & April 2024

Find cheap flight options from Chicago to Otopeni Intl specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
The lowest fares we've come across on flights traveling from Chicago to Bucharest in March and April 2024. For more flight deals, be sure to check back very soon.
Sun 3/3111:35 amORD - OTP
1 stop19h 00mTurkish Airlines
Mon 4/89:30 amOTP - ORD
1 stop16h 15mTurkish Airlines
Deal found 3/18$536
Tue 4/911:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Thu 6/139:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$558
Mon 4/88:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Mon 4/229:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$560
Sun 4/711:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Mon 6/109:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$582
Tue 4/99:40 pmORD - OTP
1 stop20h 10mLOT
Tue 4/166:15 pmOTP - ORD
1 stop33h 25mLOT
Deal found 3/18$589
Wed 4/1710:35 pmORD - OTP
1 stop17h 45mBritish Airways
Wed 4/249:00 amOTP - ORD
1 stop14h 50mBritish Airways
Deal found 3/18$601
Wed 4/37:20 pmORD - OTP
1 stop21h 00mBritish Airways
Wed 4/249:00 amOTP - ORD
1 stop13h 55mBritish Airways
Deal found 3/18$602
Tue 4/93:20 pmORD - OTP
2 stops16h 05mBritish Airways
Tue 4/166:10 pmOTP - ORD
1 stop27h 35mBritish Airways
Deal found 3/18$605
Wed 4/108:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Thu 6/139:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$608

Chicago to Otopeni Intl 2024 flight deals

Discover exclusive flight deals for travel between Chicago and Otopeni Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
The lowest fares we've come across on flights traveling from Chicago to Bucharest in March and April 2024. For more flight deals, be sure to check back very soon.
Wed 8/288:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Wed 9/189:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$535
Sun 3/3111:35 amORD - OTP
1 stop19h 00mTurkish Airlines
Mon 4/89:30 amOTP - ORD
1 stop16h 15mTurkish Airlines
Deal found 3/18$536
Tue 4/911:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Thu 6/139:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$558
Mon 4/88:30 pmORD - OTP
1 stop15h 50mTurkish Airlines
Mon 4/229:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$560
Thu 9/511:25 amORD - OTP
1 stop24h 55mTurkish Airlines
Thu 10/39:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 3/18$561
Sun 9/1511:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Sun 9/229:40 pmOTP - ORD
1 stop20h 00mTurkish Airlines
Deal found 3/17$570
Tue 11/512:35 pmORD - OTP
1 stop12h 15mTurkish Airlines
Tue 11/1910:10 amOTP - ORD
1 stop16h 00mTurkish Airlines
Deal found 3/17$582
Tue 4/99:40 pmORD - OTP
1 stop20h 10mLOT
Tue 4/166:15 pmOTP - ORD
1 stop33h 25mLOT
Deal found 3/18$589
Sat 11/99:30 pmORD - OTP
1 stop27h 20mTurkish Airlines
Fri 11/159:20 pmOTP - ORD
1 stop29h 50mTurkish Airlines
Deal found 3/17$596

Chicago to Otopeni Intl flights leaving soon

Find last-minute flight options from Chicago to Otopeni Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Have a look at some of the last-minute flights available departing from Chicago to Bucharest. Tip: verify your flight details before completing your reservation.
Fri 3/291:10 pmORD - OTP
2 stops27h 15mBritish Airways
Wed 4/34:15 pmOTP - ORD
1 stop33h 10mBritish Airways
Deal found 3/18$636
Fri 3/2910:25 pmORD - OTP
1 stop12h 55mLufthansa
Wed 4/312:45 pmOTP - ORD
1 stop13h 25mLufthansa
Deal found 3/18$716
Fri 3/295:10 pmORD - OTP
2 stops18h 10mLufthansa
Wed 4/36:00 amOTP - ORD
2 stops14h 55mLufthansa
Deal found 3/18$770
Tue 3/268:05 pmORD - OTP
1 stop12h 40mSWISS
Mon 8/266:30 amOTP - ORD
1 stop13h 40mSWISS
Deal found 3/19$777
Tue 3/268:05 pmORD - OTP
1 stop12h 40mUnited Airlines
Mon 8/266:00 amOTP - ORD
2 stops33h 38mUnited Airlines
Deal found 3/19$794
Tue 3/262:32 pmORD - OTP
2 stops18h 13mUnited Airlines
Mon 8/266:00 amOTP - ORD
2 stops33h 38mUnited Airlines
Deal found 3/19$799
Tue 3/262:30 pmORD - OTP
2 stops18h 15mMultiple Airlines
Mon 8/264:40 amOTP - ORD
3 stops24h 35mMultiple Airlines
Deal found 3/19$1,201
Fri 3/298:45 pmORD - OTP
1 stop24h 00mEmirates
Tue 4/22:15 amOTP - ORD
1 stop21h 30mEmirates
Deal found 3/18$1,823
Fri 3/296:17 pmORD - OTP
2 stops49h 23mEmirates
Tue 4/22:15 amOTP - ORD
1 stop21h 30mEmirates
Deal found 3/18$2,224

One-way flights to Otopeni Intl from Chicago

Search for one-way flight options from Chicago to Otopeni Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Users in need of a one-way flight from Chicago to Bucharest can choose from these deals. Users needing a return flight from Chicago to Bucharest should utilize the search form above.
Wed 4/248:25 amORD - OTP
3 stops48h 00mMultiple Airlines
Deal found 3/18$223
Tue 4/235:00 amORD - OTP
3 stops31h 20mMultiple Airlines
Deal found 3/18$260
Tue 4/237:00 amMDW - OTP
3 stops29h 20mMultiple Airlines
Deal found 3/18$262
Sat 4/278:25 amORD - OTP
3 stops48h 00mMultiple Airlines
Deal found 3/18$262
Mon 4/224:30 pmORD - OTP
2 stops43h 50mMultiple Airlines
Deal found 3/18$269
Mon 4/2210:00 pmORD - OTP
3 stops38h 20mMultiple Airlines
Deal found 3/18$277
Wed 4/248:25 amORD - OTP
2 stops34h 40mMultiple Airlines
Deal found 3/18$285
Mon 4/2212:28 pmMDW - OTP
3 stops39h 52mMultiple Airlines
Deal found 3/18$316
Sat 4/275:45 amMDW - OTP
3 stops35h 00mMultiple Airlines
Deal found 3/18$328

Find flights from Chicago to Otopeni Intl within your budget

Customize your flight search to find flights from Chicago to Otopeni 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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$535 - $716

Route

Depart

Return

Price

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 8/28

1 stop15h 50m

Bucharest Otopeni Intl

Wed 9/18

1 stop32h 10m

$535

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 4/9

1 stop20h 10m

Bucharest Otopeni Intl

Tue 4/16

1 stop33h 25m

$589

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/17

1 stop17h 45m

Bucharest Otopeni Intl

Wed 4/24

1 stop14h 50m

$601

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/17

1 stop17h 45m

Bucharest Otopeni Intl

Wed 4/24

2 stops21h 24m

$611

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 4/9

2 stops15h 50m

Bucharest Otopeni Intl

Tue 4/23

2 stops21h 51m

$640

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/3

2 stops18h 20m

Bucharest Otopeni Intl

Wed 4/24

2 stops20h 59m

$653

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/3

2 stops27h 20m

Bucharest Otopeni Intl

Wed 4/24

2 stops34h 01m

$655

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/3

2 stops18h 28m

Bucharest Otopeni Intl

Tue 5/21

1 stop16h 05m

$677

Chicago O'Hare IntlBucharest Otopeni Intl

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Fri 3/29

1 stop12h 55m

Bucharest Otopeni Intl

Wed 4/3

1 stop13h 25m

$716

Flights are sorted by cheapest first

Deals found on 3/18

When is the best time to book a flight from Chicago to Bucharest Otopeni Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Otopeni Intl. Price data was last updated on January 28, 2024.
The price you pay for your flight from Chicago to Bucharest Otopeni Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from Chicago to Bucharest Otopeni Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Otopeni Intl. Price data was last updated on March 10, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Chicago to Bucharest Otopeni Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Otopeni Intl by month

Plan your trip from Chicago to Otopeni Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Chicago to Otopeni Intl is currently $276 while a round-trip flight costs $631. Price data was last updated on March 10, 2024.

Currently, January is the cheapest month in which you can book a flight from Chicago to Bucharest Otopeni Intl Airport (average of $601). Flying from Chicago to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,468). 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.

January

$601

February

$674

March

$759

April

$788

May

$812

June

$1,468

July

$1,261

August

$900

September

$769

October

$683

November

$625

December

$733

Temperature and rainfall in Otopeni Intl by month

Plan your trip to Otopeni Intl by taking into account the average temperature and rainfall totals by month.

BUH

Temperature

30.2 - 71.6 °F

Reviews of airlines servicing Otopeni Intl

Get insights into the airlines that provide service to Otopeni 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 Otopeni Intl. Reviews last updated March 19, 2024.
To help decide which airline to fly from Chicago to Bucharest, see what other customers have to say about Turkish Airlines, LOT and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very good
11,551 reviews
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
2,183 reviews
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
1,144 reviews
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

7.6
Good
1,910 reviews
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

7.5
Good
3,799 reviews
8.1
Very good
11,551 reviews

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.1

Comfort

7.9

Food

7.5

Reviews

1 / 10

It was a good experience other than a short delay.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Otopeni Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Chicago to Bucharest Otopeni Intl Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from Chicago to Bucharest Otopeni Intl Airport for under $600. The cheapest flight booked recently is on Turkish Airlines for just $535, but on average you can expect to pay $605.

  • Are there last-minute flights available from Chicago to Bucharest Otopeni Intl Airport for under $700?

    There are currently 9+ open flights from Chicago to Bucharest Otopeni Intl Airport within the next 7 days for less than $700.

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

    Flying on Turkish Airlines is currently your cheapest option to Bucharest Otopeni Intl Airport, with prices starting at $535. Additional round-trip tickets that might be worth considering are offered by LOT and British Airways, with the lowest prices starting at $589 and $601, respectively. You may be able to fly from Chicago to Bucharest Otopeni Intl Airport for 36% less than the average price by searching for these airlines.

  • What are the most popular airlines that fly from Chicago to Bucharest Otopeni Intl Airport?

  • What does ORD to OTP mean?

    Chicago O'Hare Intl Airport is ORD and Bucharest Otopeni Intl Airport is OTP. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD).

  • Where are the most common layover locations when flying from Chicago to Bucharest Otopeni Intl Airport?

  • What are some popular things to do or see while on a layover in Istanbul?

    Most Istanbul visitors opt to spend their time experiencing Taksim Square, Laleli Camii, and Sultan Ahmet Camii. Taksim Square, Laleli Camii and Sultan Ahmet Camii are located about 20.8 mi, 21.5 mi, and 22.3 mi, respectively from Istanbul if you are interested in checking them out. Travelers can book a car rental at Istanbul for about $29 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Chicago to Bucharest Otopeni Intl Airport flights?

See more FAQs

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Alternative routes for Chicago to Otopeni Intl
See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Chicago to Otopeni Intl

Discover the top 10 airlines that operate flights from Chicago to Otopeni 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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$505Average$672FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air FranceCheapest$511Average$718FlexibilityNo cancel feeOn-time77%
Search Air France flights
LOTCheapest$545Average$1,193FlexibilityNo cancel feeOn-time81%
Search LOT flights
SWISSCheapest$550Average$1,202FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Turkish AirlinesCheapest$550Average$837FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Austrian AirlinesCheapest$570Average$1,071FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
British AirwaysCheapest$571Average$712FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest$601Average$1,108FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest$623Average$1,089FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$624Average$878FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Search flights from Chicago to Otopeni Intl by cabin class

Find flights from Chicago to Otopeni Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

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How does Cheapflights help users find flights from Chicago to Otopeni Intl?

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