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$278+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUH
Dec 1 — Dec 81
Mon 12/1
Mon 12/8
1 adult, Economy
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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 November 1, 2025.

This Gotogate deal was found by Cheapflights users on 11/1. 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.
Sun 11/911:50 amORD - OTP
1 stop24h 40mTurkish Airlines
Sat 11/223:30 pmOTP - ORD
1 stop26h 35mTurkish Airlines
Deal found 11/1$522
This KAYAK deal was found by Cheapflights users on 10/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:10 pmORD - OTP
1 stop13h 35mBritish Airways
Wed 12/173:50 pmOTP - ORD
1 stop30h 00mBritish Airways
Deal found 10/30$523
This Gotogate deal was found by Cheapflights users on 10/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:50 pmORD - OTP
1 stop19h 15mLufthansa
Wed 12/102:40 pmOTP - ORD
1 stop13h 25mLufthansa
Deal found 10/30$524
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:50 pmORD - OTP
1 stop12h 55mSWISS
Mon 1/124:40 pmOTP - ORD
1 stop31h 40mSWISS
Deal found 10/31$526
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:50 pmORD - OTP
1 stop21h 40mMultiple Airlines
Fri 11/75:55 amOTP - ORD
1 stop22h 10mMultiple Airlines
Deal found 10/30$527
This CrystalTravel 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/259:50 pmORD - OTP
1 stop19h 15mLufthansa
Tue 12/95:55 amOTP - ORD
1 stop15h 15mLufthansa
Deal found 10/29$529
This FlightHub deal was found by Cheapflights users on 10/30. 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.
Thu 12/49:55 pmORD - OTP
1 stop17h 20mLOT
Mon 12/156:25 pmOTP - ORD
1 stop33h 35mLOT
Deal found 10/30$530
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:35 pmORD - OTP
1 stop12h 05mLufthansa
Wed 11/56:05 amOTP - ORD
1 stop20h 20mLufthansa
Deal found 10/30$531
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:50 pmORD - OTP
1 stop21h 40mMultiple Airlines
Tue 11/115:55 amOTP - ORD
1 stop15h 15mMultiple Airlines
Deal found 10/30$532
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:50 pmORD - OTP
1 stop12h 45mUnited Airlines
Sat 12/65:55 amOTP - ORD
2 stops17h 00mUnited Airlines
Deal found 10/30$533
This Delta deal was found by Cheapflights users on 10/30. 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.
Sat 12/65:20 pmORD - OTP
1 stop21h 30mDelta
Sun 12/146:00 amOTP - ORD
1 stop16h 20mDelta
Deal found 10/30$534
This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 11/2710:47 amMDW - OTP
2 stops17h 18mDelta
Wed 12/101:55 pmOTP - MDW
2 stops17h 52mDelta
Deal found 10/30$549

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 November 1, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$520
(FlightHub)

One-way from

$278
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$616

Good round-trip deal

$829 or less
Provider with most accurate pricing for Chicago (CHI)-Bucharest (BUH) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Bucharest (BUH) flights.
Search Deals
From Illinois to Bucharest (BUH)
Search Deals
One-way flight from Illinois to Bucharest (BUH)
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($301 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Bucharest (BUH).
Search Deals

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 November 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

Wed 12/3

5:20 pm-12:05 pm

1 stop34h 45m

Bucharest Otopeni Intl

Fri 12/12

6:00 am-2:20 pm

1 stop16h 20m

$536

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 12/3

5:20 pm-12:05 pm

1 stop34h 45m

Bucharest Otopeni Intl

Thu 12/11

1:55 pm-2:20 pm

1 stop32h 25m

$536

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 12/2

6:10 pm-10:50 pm

2 stops20h 40m

Bucharest Otopeni Intl

Thu 12/11

1:55 pm-2:20 pm

1 stop32h 25m

$539

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 12/3

5:20 pm-12:05 pm

1 stop34h 45m

Bucharest Otopeni Intl

Tue 12/16

6:05 am-3:10 pm

1 stop17h 05m

$542

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Thu 1/8

5:20 pm-3:50 pm

1 stop14h 30m

Bucharest Otopeni Intl

Sun 1/18

1:55 pm-11:57 pm

2 stops18h 02m

$544

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Fri 1/9

5:20 pm-1:50 pm

1 stop12h 30m

Bucharest Otopeni Intl

Mon 1/19

6:00 am-8:47 pm

2 stops22h 47m

$544

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Fri 1/9

5:20 pm-1:50 pm

1 stop12h 30m

Bucharest Otopeni Intl

Sun 1/18

6:00 am-5:45 pm

2 stops19h 45m

$544

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 1/12

5:20 pm-10:50 pm

1 stop21h 30m

Bucharest Otopeni Intl

Wed 1/21

1:55 pm-10:29 pm

2 stops16h 34m

$544

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 12/7

8:50 am-1:00 pm

2 stops20h 10m

Bucharest Otopeni Intl

Sun 12/14

1:55 pm-2:20 pm

1 stop32h 25m

$545

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 1/7

1:55 pm-5:10 pm

2 stops19h 15m

Bucharest Otopeni Intl

Fri 1/16

6:00 am-2:20 pm

1 stop16h 20m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 41 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, April is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $334). Flying from Illinois to Bucharest in June is currently the most expensive (average of $826). 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 November 1, 2025.

When flying from Illinois to Bucharest, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 38% versus a flight in the morning.

What is the cheapest day to fly from Illinois to Bucharest?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Bucharest. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Bucharest flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Illinois to Bucharest?

    Delta, Lufthansa, and KLM can get you from Illinois to Bucharest in just under 14h 20m. Your travel time can differ by up to 20h 25m. There are 5451 mi between Illinois and Bucharest. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

  • What are the cheapest flights from Illinois to Bucharest?

    The cheapest flight price from Illinois to Bucharest is $827. On average you can expect to pay $833. The most popular route, (Chicago O'Hare Intl - Bucharest Otopeni Intl), can usually be booked for $485.

  • 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, April is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $334). Flying from Illinois to Bucharest in June is currently the most expensive (average of $826). 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 Bucharest?

Book flights to Bucharest 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 November 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$385Average$728FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$504Average$598FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$517Average$732FlexibilityNo cancel feeOn-time78%
LOTCheapest$538Average$906FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$575Average$748FlexibilityNo cancel feeOn-time70%
SWISSCheapest$587Average$760FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$588Average$887FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$595Average$909FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$618Average$749FlexibilityNo cancel feeOn-time77%
Air SerbiaCheapest$655Average$714FlexibilityNo cancel feeOn-timeN/A

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