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$444+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$592
(KLM)

One-way from

$444
(Air Serbia)

Popular in

July

Cheapest in

February

Average price

$645
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. 8% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This KLM deal was found by Cheapflights users on 3/27. 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.
Mon 4/217:00 amOTP - ORD
1 stop15h 10mMultiple Airlines
Tue 5/65:10 pmORD - OTP
1 stop14h 40mMultiple Airlines
Deal found 3/27$592
This American Airlines deal was found by Cheapflights users on 3/27. 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 9/238:25 amOTP - ORD
1 stop17h 50mAmerican Airlines
Wed 10/82:55 pmORD - OTP
2 stops15h 35mAmerican Airlines
Deal found 3/27$598
This Scandinavian Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 6/188:50 pmOTP - ORD
1 stop27h 20mScandinavian Airlines
Thu 9/187:15 pmORD - OTP
1 stop17h 55mScandinavian Airlines
Deal found 3/27$600
This Air France deal was found by Cheapflights users on 3/27. 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.
Thu 4/246:30 amOTP - ORD
2 stops15h 40mAir France
Mon 5/55:10 pmORD - OTP
1 stop22h 45mAir France
Deal found 3/27$612
This oojo deal was found by Cheapflights users on 3/27. 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 6/162:35 pmOTP - ORD
1 stop13h 05mLOT
Tue 9/169:40 pmORD - OTP
1 stop12h 05mLOT
Deal found 3/27$624
This British Airways deal was found by Cheapflights users on 3/27. 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.
Sat 6/148:05 pmOTP - ORD
1 stop23h 50mBritish Airways
Sun 9/144:45 pmORD - OTP
2 stops24h 00mBritish Airways
Deal found 3/27$628
This Delta deal was found by Cheapflights users on 3/27. 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.
Mon 4/217:00 amOTP - ORD
1 stop15h 10mDelta
Tue 5/612:15 pmORD - OTP
2 stops15h 55mDelta
Deal found 3/27$630
This Delta deal was found by Cheapflights users on 3/27. 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.
Mon 4/217:00 amOTP - MDW
2 stops19h 20mDelta
Tue 5/610:20 amMDW - OTP
2 stops17h 50mDelta
Deal found 3/27$636
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/111:55 pmOTP - ORD
2 stops26h 08mUnited Airlines
Fri 5/308:40 amORD - OTP
2 stops20h 15mUnited Airlines
Deal found 3/26$667
This KLM deal was found by Cheapflights users on 3/26. 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 6/106:05 pmOTP - ORD
1 stop28h 05mKLM
Thu 9/44:20 pmORD - OTP
1 stop15h 05mKLM
Deal found 3/26$674
This Air Canada deal was found by Cheapflights users on 3/27. 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 6/186:00 amOTP - ORD
2 stops35h 46mAir Canada
Fri 9/198:25 pmORD - OTP
2 stops31h 30mAir Canada
Deal found 3/27$729
This Lufthansa deal was found by Cheapflights users on 3/26. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/256:00 amOTP - ORD
1 stop14h 55mLufthansa
Sun 5/49:40 pmORD - OTP
1 stop19h 20mLufthansa
Deal found 3/26$768

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 March 28, 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

Mon 4/21

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Tue 5/6

5:10 pm-3:50 pm

1 stop14h 40m

$592

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 9/23

8:25 am-6:15 pm

1 stop17h 50m

Chicago O'Hare Intl

Wed 10/8

2:55 pm-2:30 pm

2 stops15h 35m

$598

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 6/18

8:50 pm-4:10 pm

1 stop27h 20m

Chicago O'Hare Intl

Thu 9/18

7:15 pm-9:10 pm

1 stop17h 55m

$600

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 4/24

6:30 am-2:10 pm

2 stops15h 40m

Chicago O'Hare Intl

Mon 5/5

5:10 pm-11:55 pm

1 stop22h 45m

$612

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Mon 6/16

2:35 pm-7:40 pm

1 stop13h 05m

Chicago O'Hare Intl

Tue 9/16

9:40 pm-5:45 pm

1 stop12h 05m

$624

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 6/14

8:05 pm-11:55 am

1 stop23h 50m

Chicago O'Hare Intl

Sun 9/14

4:45 pm-12:45 am

2 stops24h 00m

$628

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Mon 4/21

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Tue 5/6

12:15 pm-12:10 pm

2 stops15h 55m

$630

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

Mon 4/21

7:00 am-6:20 pm

2 stops19h 20m

Chicago Midway

Tue 5/6

10:20 am-12:10 pm

2 stops17h 50m

$636

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 6/11

4:50 pm-2:10 pm

1 stop29h 20m

Chicago O'Hare Intl

Wed 9/3

4:50 pm-3:25 pm

1 stop14h 35m

$683

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 6/12

6:00 am-8:20 pm

2 stops22h 20m

Chicago O'Hare Intl

Thu 8/14

1:05 pm-1:00 pm

2 stops15h 55m

$686

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 29 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 $323). 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 March 28, 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 March 28, 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
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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
3,190 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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
7,896 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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
1,321 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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
1,063 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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
7.5
Good
769 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.8

Crew

8.3

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 $444. Users have also found prices from $499 and $639 on Scandinavian Airlines and Delta, 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 $323). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$336Average$671FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$642FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$697FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$580Average$707FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$582Average$684FlexibilityNo cancel feeOn-time81%
DeltaCheapest$585Average$634FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$593Average$809FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$594Average$821FlexibilityNo cancel feeOn-time69%
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