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$312+ Cheap flights from Illinois to Bucharest (BUH)

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUH
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Illinois to Bucharest

Keep the following information in mind while searching for Illinois to Bucharest flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$627
(SWISS)

One-way from

$312
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$996
Provider with most accurate pricing for Chicago (CHI)-Bucharest (BUH) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Bucharest (BUH) flights.
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From Illinois to Bucharest (BUH)
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One-way flight from Illinois to Bucharest (BUH)
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Highest demand for flights based on searches. 27% potential increase in price ($280 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Illinois to Bucharest

Cheapest flights from Illinois to Bucharest
Explore the most affordable flight options available from Illinois to Bucharest. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 11/255:59 pmMDW - OTP
2 stops19h 21mDelta
Sat 12/66:05 amOTP - MDW
2 stops20h 02mDelta
Deal found 4/30$612
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:50 pmORD - OTP
2 stops42h 20mScandinavian Airlines
Sat 10/119:25 pmOTP - ORD
1 stop26h 45mScandinavian Airlines
Deal found 4/30$617
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/202:20 pmORD - OTP
1 stop17h 00mSWISS
Mon 8/184:10 pmOTP - ORD
1 stop28h 00mSWISS
Deal found 4/29$627
This Lufthansa deal was found by Cheapflights users on 4/30. 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 5/96:35 pmORD - OTP
1 stop12h 45mMultiple Airlines
Fri 11/712:55 pmOTP - ORD
1 stop13h 30mMultiple Airlines
Deal found 4/30$631
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Fri 5/97:10 amORD - OTP
2 stops24h 10mAir Canada
Fri 11/75:55 amOTP - ORD
2 stops35h 02mAir Canada
Deal found 4/30$633
This Booking.com deal was found by Cheapflights users on 4/30. 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.
Sun 8/101:30 pmSTL - OTP
2 stops41h 50mAir Canada
Sat 8/236:00 amOTP - STL
2 stops22h 00mAir Canada
Deal found 4/30$651
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/103:30 pmSTL - OTP
1 stop17h 20mMultiple Airlines
Sat 8/236:00 amOTP - STL
2 stops22h 00mMultiple Airlines
Deal found 4/30$656
This oojo deal was found by Cheapflights users on 4/30. 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 9/811:25 amORD - OTP
1 stop19h 10mTurkish Airlines
Sat 9/279:55 pmOTP - ORD
1 stop19h 45mTurkish Airlines
Deal found 4/30$656
This Air Serbia deal was found by Cheapflights users on 4/30. 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 Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1011:20 pmORD - OTP
1 stop19h 45mAir Serbia
Sat 5/174:05 pmOTP - ORD
1 stop12h 55mAir Serbia
Deal found 4/30$674
This Travelocity deal was found by Cheapflights users on 4/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:15 pmORD - OTP
1 stop21h 10mBritish Airways
Wed 8/134:15 pmOTP - ORD
1 stop29h 40mBritish Airways
Deal found 4/30$677
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/209:40 pmORD - OTP
1 stop12h 55mLufthansa
Mon 8/187:20 pmOTP - ORD
2 stops25h 35mLufthansa
Deal found 4/29$678
This oojo deal was found by Cheapflights users on 4/30. 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.
Sun 8/175:10 pmORD - OTP
2 stops16h 35mLOT
Sun 9/142:35 pmOTP - ORD
1 stop13h 05mLOT
Deal found 4/30$698

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Bucharest 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 May 1, 2025.
Use the filters below to find and compare flights from Illinois to Bucharest that are best for you.

Fly from

Illinois

Fly to

Bucharest

Route

Depart

Return

Price

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 9/27

6:50 pm-9:10 pm

2 stops42h 20m

Bucharest Otopeni Intl

Sat 10/11

9:25 pm-4:10 pm

1 stop26h 45m

$617

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 7/20

2:20 pm-3:20 pm

1 stop17h 00m

Bucharest Otopeni Intl

Mon 8/18

4:10 pm-12:10 pm

1 stop28h 00m

$627

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 8/10

1:30 pm-3:20 pm

2 stops41h 50m

Bucharest Otopeni Intl

Sat 8/23

6:00 am-8:00 pm

2 stops22h 00m

$651

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 8/10

3:30 pm-4:50 pm

1 stop17h 20m

Bucharest Otopeni Intl

Sat 8/23

6:00 am-8:00 pm

2 stops22h 00m

$656

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 9/8

11:25 am-2:35 pm

1 stop19h 10m

Bucharest Otopeni Intl

Sat 9/27

9:55 pm-9:40 am

1 stop19h 45m

$656

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 8/6

7:15 pm-12:25 am

1 stop21h 10m

Bucharest Otopeni Intl

Wed 8/13

4:15 pm-1:55 pm

1 stop29h 40m

$677

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 7/20

9:40 pm-6:35 pm

1 stop12h 55m

Bucharest Otopeni Intl

Mon 8/18

7:20 pm-12:55 pm

2 stops25h 35m

$678

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 7/16

7:15 am-6:35 pm

2 stops27h 20m

Bucharest Otopeni Intl

Mon 8/18

4:10 pm-3:55 pm

1 stop31h 45m

$681

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 8/17

5:10 pm-5:45 pm

2 stops16h 35m

Bucharest Otopeni Intl

Sun 9/14

2:35 pm-7:40 pm

1 stop13h 05m

$698

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 8/13

7:15 am-6:35 pm

2 stops27h 20m

Bucharest Otopeni Intl

Thu 9/18

6:00 am-2:50 pm

2 stops16h 50m

$718

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 26 results
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Best time to book a flight from Illinois to Bucharest

Have a flexible travel schedule? Discover the best time to fly to Bucharest from Illinois 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 Illinois to Bucharest

What is the cheapest month to book a flight from Illinois to Bucharest?

Currently, November is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $604). Flying from Illinois to Bucharest in June is currently the most expensive (average of $1,169). 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 IL to BUH?

Find hourly flight availability from Illinois to Bucharest. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Bucharest as you normally would.

Rainfall in Bucharest by month

Plan your trip to Bucharest by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bucharest ranges from 0.8 - 3.1 inches per month. June is typically the wettest month, when rainfall can reach 3.1 in. October is typically the driest time to visit Bucharest when rainfall is around 0.8 in.

Temperature in Bucharest by month

Plan your trip to Bucharest by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bucharest, 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Bucharest

Get insights into the airlines that provide service to Bucharest. 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 Bucharest. Reviews last updated May 1, 2025.
Get a feel of what it's like to fly with Delta, LOT and SWISS from Illinois to Bucharest by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
LOT
7.6
Good
1,069 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Bucharest. 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 Illinois to Bucharest one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $437. Delta flights start at $477 while deals on Air Canada start at $735 one-way.

  • What are the most popular routes from Illinois to Bucharest?

    While some choose either Chicago Midway - Bucharest Otopeni Intl or Lambert-St Louis - Bucharest Otopeni Intl, Chicago O'Hare Intl - Bucharest Otopeni Intl is the most popular route from Illinois to Bucharest.

  • Can I find deals for flights from Illinois to Bucharest that include hotel bookings?

    Yes. In addition to deals on Illinois to Bucharest flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Bucharest?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Bucharest.

  • Can I find deals for business class flights from Illinois to Bucharest?

    Yes. Cheapflights offers flight deals from Illinois to Bucharest 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 Illinois to Bucharest?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $604). Flying from Illinois to Bucharest in June is currently the most expensive (average of $1,169). 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Otopeni

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Alternative routes for Illinois to Bucharest

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Bucharest

Discover the top 10 airlines that operate flights from Illinois to Bucharest. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$326Average$818FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$510Average$599FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$517Average$794FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$529Average$732FlexibilityNo cancel feeOn-time70%
LOTCheapest$532Average$977FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$549Average$983FlexibilityNo cancel feeOn-time76%
SWISSCheapest$569Average$795FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$580Average$861FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$585Average$944FlexibilityNo cancel feeOn-time69%
Air SerbiaCheapest$655Average$1,017FlexibilityNo cancel feeOn-timeN/A

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