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$434+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
nov 29 — dez 61
sáb 11/29
sáb 12/6
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 outubro 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$661
(Gotogate)

One-way from

$434
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$793
Provider with most accurate pricing for Bucharest (BUH)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Bucharest (BUH)-Chicago (CHI) flights.
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From Bucharest Otopeni Intl to Illinois
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One-way flight from Bucharest Otopeni Intl to Illinois
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Highest demand for flights based on searches. 10% potential increase in price ($80 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 October 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 outubro 30, 2025.

This Gotogate deal was found by Cheapflights users on 10/29. 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.
qui 11/132:45 pmOTP - ORD
1 stop13h 20mLufthansa
qui 11/2710:35 pmORD - OTP
1 stop12h 05mLufthansa
Deal found 10/29$661
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/124:30 amOTP - ORD
3 stops20h 50mMultiple Airlines
sex 11/286:30 pmORD - OTP
3 stops22h 00mMultiple Airlines
Deal found 10/28$666
This United Airlines deal was found by Cheapflights users on 10/28. 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.
qui 11/135:50 amOTP - ORD
1 stop15h 20mUnited Airlines
sex 11/289:50 pmORD - OTP
1 stop12h 45mUnited Airlines
Deal found 10/28$670
This Air Canada deal was found by Cheapflights users on 10/28. 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.
sex 11/215:55 amOTP - ORD
2 stops17h 00mAir Canada
qua 1/2810:35 amORD - OTP
2 stops21h 15mAir Canada
Deal found 10/28$671
This United Airlines deal was found by Cheapflights users on 10/28. 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.
seg 11/175:55 amOTP - ORD
1 stop15h 15mUnited Airlines
qua 12/36:15 pmORD - OTP
2 stops21h 40mUnited Airlines
Deal found 10/28$672
This United Airlines deal was found by Cheapflights users on 10/28. 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.
sex 11/215:55 amOTP - ORD
1 stop13h 15mUnited Airlines
qui 1/291:00 pmORD - OTP
2 stops17h 05mUnited Airlines
Deal found 10/28$673
This United Airlines deal was found by Cheapflights users on 10/28. 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.
sex 11/215:55 amOTP - ORD
1 stop22h 10mUnited Airlines
sáb 11/294:20 pmORD - OTP
1 stop12h 10mUnited Airlines
Deal found 10/28$675
This United Airlines deal was found by Cheapflights users on 10/28. 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.
ter 11/255:55 amOTP - ORD
2 stops17h 00mUnited Airlines
ter 12/23:20 pmORD - OTP
1 stop14h 35mUnited Airlines
Deal found 10/28$676
This United Airlines deal was found by Cheapflights users on 10/28. 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.
qui 11/205:50 amOTP - ORD
1 stop13h 20mUnited Airlines
qui 12/46:15 pmORD - OTP
2 stops21h 35mUnited Airlines
Deal found 10/28$677
This United Airlines deal was found by Cheapflights users on 10/28. 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.
sex 11/215:55 amOTP - ORD
2 stops18h 55mUnited Airlines
seg 1/268:52 amORD - OTP
2 stops21h 13mUnited Airlines
Deal found 10/28$679
This United Airlines deal was found by Cheapflights users on 10/28. 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.
qui 11/205:50 amOTP - ORD
2 stops37h 28mUnited Airlines
sáb 1/109:13 amORD - OTP
2 stops20h 52mUnited Airlines
Deal found 10/28$681
This United Airlines deal was found by Cheapflights users on 10/28. 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.
sex 11/215:55 amOTP - ORD
2 stops20h 35mUnited Airlines
qua 1/282:27 pmORD - OTP
2 stops15h 33mUnited Airlines
Deal found 10/28$683

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 outubro 30, 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

sáb 1/17

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

sáb 2/21

9:55 pm-11:15 pm

1 stop17h 20m

$671

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

sex 11/21

2:50 pm-8:05 pm

1 stop13h 15m

Chicago O'Hare Intl

qua 1/28

12:50 pm-2:00 pm

2 stops17h 10m

$672

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

seg 11/17

5:55 am-8:00 pm

2 stops22h 05m

Chicago O'Hare Intl

qua 12/3

12:50 pm-2:00 pm

2 stops17h 10m

$672

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

seg 11/17

5:55 am-8:00 pm

2 stops22h 05m

Chicago O'Hare Intl

qua 12/3

2:24 pm-2:00 pm

2 stops15h 36m

$672

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

qui 11/13

5:50 am-3:20 pm

1 stop17h 30m

Chicago O'Hare Intl

sex 11/28

3:07 pm-2:10 pm

2 stops15h 03m

$672

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

ter 3/24

5:55 am-4:20 pm

1 stop17h 25m

Chicago O'Hare Intl

ter 5/5

6:15 pm-11:40 pm

1 stop21h 25m

$673

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

sex 11/21

5:55 am-11:10 am

1 stop13h 15m

Chicago O'Hare Intl

sáb 11/29

3:20 pm-2:05 pm

1 stop14h 45m

$673

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

qui 11/13

2:45 pm-8:05 pm

1 stop13h 20m

Chicago O'Hare Intl

qui 11/27

1:36 pm-6:40 pm

2 stops21h 04m

$673

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

sáb 1/17

5:55 am-3:20 pm

1 stop17h 25m

Chicago O'Hare Intl

sáb 2/21

1:00 pm-2:05 pm

2 stops17h 05m

$674

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

qui 11/13

6:00 am-6:18 pm

2 stops20h 18m

Chicago Midway

sex 11/28

9:41 am-1:50 pm

2 stops20h 09m

$745

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 34 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, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Illinois (average of $353). Flying from Bucharest Otopeni Intl Airport to Illinois in January is currently the most expensive (average of $611). 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 outubro 30, 2025.

It’s optimal to fly from Bucharest Otopeni Intl Airport to Illinois in the afternoon. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the evening.

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 outubro 30, 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
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
LOT
7.6
Good
1,135 reviews
KLM
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Turkish Airlines
7.3
Good
4,031 reviews
KLM
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,541 reviews
KLM
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,487 reviews
KLM
7.7
Good
1,406 reviews

Entertainment

7.1

Comfort

7.7

Overall

7.7

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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, United Airlines, and Air Canada can get you from Bucharest Otopeni Intl Airport to Illinois in just under 13h 15m. Your travel time can differ by up to 8h 50m. 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, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Illinois (average of $353). Flying from Bucharest Otopeni Intl Airport to Illinois in January is currently the most expensive (average of $611). 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 outubro 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$493Average$768FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$565Average$821FlexibilityNo cancel feeOn-time76%
KLMCheapest$570Average$740FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$571Average$815FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$581Average$695FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$583Average$656FlexibilityNo cancel feeOn-time81%
DeltaCheapest$623Average$634FlexibilityNo cancel feeOn-timeN/A

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