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$317+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ORD
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$601
(Gotogate)

One-way from

$317
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$621
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 ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This Gotogate deal was found by Cheapflights users on 4/29. 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.
Sat 5/105:35 amOTP - ORD
1 stop17h 35mLOT
Fri 5/234:55 pmORD - OTP
1 stop16h 50mLOT
Deal found 4/29$601
This Scandinavian Airlines deal was found by Cheapflights users on 4/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/159:25 pmOTP - ORD
1 stop26h 45mScandinavian Airlines
Sun 9/147:15 pmORD - OTP
1 stop17h 55mScandinavian Airlines
Deal found 4/28$603
This KLM deal was found by Cheapflights users on 4/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/68:35 amOTP - ORD
1 stop13h 35mMultiple Airlines
Thu 7/105:10 pmORD - OTP
1 stop14h 40mMultiple Airlines
Deal found 4/28$620
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/67:00 amOTP - ORD
1 stop15h 10mDelta
Tue 7/811:00 amORD - OTP
2 stops17h 10mDelta
Deal found 4/28$621
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/137:00 amOTP - MDW
2 stops18h 40mDelta
Wed 7/99:25 amMDW - OTP
2 stops18h 45mDelta
Deal found 4/28$626
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:05 pmOTP - ORD
1 stop28h 05mKLM
Mon 9/154:50 pmORD - OTP
1 stop12h 10mKLM
Deal found 4/29$626
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/49:15 pmOTP - ORD
1 stop26h 40mBritish Airways
Wed 9/241:19 pmORD - OTP
2 stops27h 06mBritish Airways
Deal found 4/28$657
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/128:25 amOTP - ORD
2 stops20h 59mAmerican Airlines
Thu 6/195:45 pmORD - OTP
1 stop23h 40mAmerican Airlines
Deal found 4/28$670
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:00 amOTP - ORD
2 stops17h 50mUnited Airlines
Wed 9/1712:50 pmORD - OTP
2 stops16h 25mUnited Airlines
Deal found 4/29$698
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:00 amOTP - ORD
2 stops24h 05mAir Canada
Mon 6/2310:00 amORD - OTP
2 stops17h 55mAir Canada
Deal found 4/28$707
This Austrian Airlines deal was found by Cheapflights users on 4/28. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/141:15 pmOTP - ORD
1 stop32h 05mAustrian Airlines
Thu 9/1812:50 pmORD - OTP
2 stops15h 35mAustrian Airlines
Deal found 4/28$746
This SWISS deal was found by Cheapflights users on 4/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:30 amOTP - ORD
1 stop17h 25mSWISS
Sun 9/149:25 pmORD - OTP
2 stops32h 20mSWISS
Deal found 4/28$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 April 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

Sat 5/10

5:35 am-3:10 pm

1 stop17h 35m

Chicago O'Hare Intl

Fri 5/23

4:55 pm-5:45 pm

1 stop16h 50m

$601

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 6/15

9:25 pm-4:10 pm

1 stop26h 45m

Chicago O'Hare Intl

Sun 9/14

7:15 pm-9:10 pm

1 stop17h 55m

$603

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 6/6

8:35 am-2:10 pm

1 stop13h 35m

Chicago O'Hare Intl

Thu 7/10

5:10 pm-3:50 pm

1 stop14h 40m

$620

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 6/6

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Tue 7/8

11:00 am-12:10 pm

2 stops17h 10m

$621

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 6/17

6:05 pm-2:10 pm

1 stop28h 05m

Chicago O'Hare Intl

Mon 9/15

4:50 pm-1:00 pm

1 stop12h 10m

$626

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

Fri 6/13

7:00 am-5:40 pm

2 stops18h 40m

Chicago Midway

Wed 7/9

9:25 am-12:10 pm

2 stops18h 45m

$626

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 9/4

3:40 pm-1:50 pm

1 stop30h 10m

Chicago O'Hare Intl

Sat 9/27

5:06 pm-12:30 am

2 stops23h 24m

$657

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 6/12

8:25 am-9:24 pm

2 stops20h 59m

Chicago O'Hare Intl

Thu 6/19

5:45 pm-1:25 am

1 stop23h 40m

$670

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 6/18

6:00 am-3:50 pm

2 stops17h 50m

Chicago O'Hare Intl

Wed 9/17

12:50 pm-1:15 pm

2 stops16h 25m

$698

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 6/17

6:00 am-10:05 pm

2 stops24h 05m

Chicago O'Hare Intl

Mon 6/23

10:00 am-11:55 am

2 stops17h 55m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 30 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 April 30, 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 April 30, 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
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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
3,215 reviews
Emirates
8.0
Very good
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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
7,936 reviews
Emirates
8.0
Very good
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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
1,333 reviews
Emirates
8.0
Very good
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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
1,069 reviews
Emirates
8.0
Very good
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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
7.6
Good
780 reviews
Emirates
8.0
Very good
3,215 reviews

Entertainment

8.2

Boarding

8.1

Overall

8.0

Crew

8.3

Food

7.8

Comfort

8.0

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 $355. Users have also found prices from $664 and $670 on Austrian Airlines and British Airways, 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 $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.

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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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$336Average$684FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$698FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$580Average$696FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$582Average$686FlexibilityNo cancel feeOn-time81%
DeltaCheapest$585Average$634FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$593Average$847FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$594Average$815FlexibilityNo cancel feeOn-time69%

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