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$307+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUH
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
1 adult, Economy
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Cheap 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 June 16, 2026.

This Air Serbia deal was found by Cheapflights users on 6/15. 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 8/111:20 pm
ORD
-
OTP
1 stop19h 45m
Air Serbia
Sat 9/124:05 pm
OTP
-
ORD
1 stop13h 10m
Air Serbia
Deal found 6/15$784
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:15 pm
ORD
-
OTP
2 stops20h 30m
Scandinavian Airlines
Wed 9/24:50 pm
OTP
-
ORD
2 stops31h 20m
Scandinavian Airlines
Deal found 6/16$786
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 8/121:59 pm
ORD
-
OTP
2 stops15h 41m
Delta
Wed 8/267:05 am
OTP
-
ORD
1 stop15h 25m
Delta
Deal found 6/16$787
This British Airways deal was found by Cheapflights users on 6/13. 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 11/79:45 pm
ORD
-
OTP
1 stop18h 00m
British Airways
Sun 11/224:10 pm
OTP
-
ORD
1 stop29h 40m
British Airways
Deal found 6/13$788
This KLM deal was found by Cheapflights users on 6/15. 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.
Sun 8/27:17 pm
ORD
-
OTP
2 stops14h 23m
KLM
Tue 8/184:50 pm
OTP
-
ORD
1 stop29h 40m
KLM
Deal found 6/15$789
This KLM deal was found by Cheapflights users on 6/15. 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 7/277:17 pm
ORD
-
OTP
2 stops14h 23m
KLM
Wed 8/194:50 pm
OTP
-
ORD
1 stop29h 25m
KLM
Deal found 6/15$791
This Delta deal was found by Cheapflights users on 6/13. 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.
Sun 11/85:20 pm
ORD
-
OTP
1 stop12h 50m
Delta
Thu 11/266:00 am
OTP
-
ORD
2 stops18h 37m
Delta
Deal found 6/13$792
This Delta deal was found by Cheapflights users on 6/13. 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 11/135:20 pm
ORD
-
OTP
1 stop12h 50m
Delta
Thu 11/266:00 am
OTP
-
ORD
2 stops18h 37m
Delta
Deal found 6/13$793
This American Airlines deal was found by Cheapflights users on 6/16. 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 11/176:50 pm
ORD
-
OTP
1 stop20h 05m
American Airlines
Tue 12/18:00 am
OTP
-
ORD
2 stops21h 25m
American Airlines
Deal found 6/16$794
This Booking.com deal was found by Cheapflights users on 6/16. 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.
Mon 9/2111:25 am
ORD
-
OTP
2 stops24h 20m
Turkish Airlines
Wed 9/307:35 am
OTP
-
ORD
1 stop18h 40m
Turkish Airlines
Deal found 6/16$795
This Delta deal was found by Cheapflights users on 6/13. 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.
Wed 11/111:05 pm
MDW
-
OTP
2 stops17h 05m
Delta
Wed 11/186:00 am
OTP
-
MDW
2 stops18h 50m
Delta
Deal found 6/13$796
This Delta deal was found by Cheapflights users on 6/12. 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 8/612:46 pm
MDW
-
OTP
2 stops16h 54m
Delta
Tue 8/257:05 am
OTP
-
MDW
2 stops19h 28m
Delta
Deal found 6/12$797

Find flight deals from Illinois to Bucharest

Keep the following information in mind while searching for Illinois to Bucharest flight deals. Data was last updated June 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$784
(Air Serbia)

One-way from

$307
(Mytrip)

Popular in

May

Cheapest in

January

Average price

$880

Good round-trip deal

$896 or less

Good one-way deal

$435 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. 14% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Bucharest (BUH).
Search Deals
Price to beat on a one-way 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 June 16, 2026.
Use the filters below to find and compare flights from Illinois to Bucharest that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 8/12

1:59 pm-1:40 pm

2 stops15h 41m

Bucharest Otopeni Intl

Wed 8/26

7:05 am-2:30 pm

1 stop15h 25m

$787

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 8/10

10:00 am-12:00 pm

2 stops18h 00m

Bucharest Otopeni Intl

Mon 8/24

1:50 pm-7:55 pm

1 stop14h 05m

$789

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 9/9

11:25 am-8:10 am

1 stop12h 45m

Bucharest Otopeni Intl

Wed 9/23

3:55 pm-6:15 pm

1 stop34h 20m

$789

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Fri 8/7

11:07 am-1:10 am

2 stops30h 03m

Bucharest Otopeni Intl

Fri 8/21

1:45 pm-7:55 pm

1 stop14h 10m

$789

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 8/26

8:10 pm-2:35 pm

1 stop34h 25m

Bucharest Otopeni Intl

Wed 9/9

9:35 pm-9:40 am

1 stop20h 05m

$789

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 8/2

7:17 pm-5:40 pm

2 stops14h 23m

Bucharest Otopeni Intl

Tue 8/18

2:00 pm-2:30 pm

1 stop32h 30m

$790

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Thu 7/30

9:40 pm-6:35 pm

1 stop12h 55m

Bucharest Otopeni Intl

Wed 8/19

6:05 am-11:40 pm

2 stops25h 35m

$795

ChicagoBucharest

MDW - OTP

MDWOTP

Chicago Midway

Wed 11/11

1:05 pm-2:10 pm

2 stops17h 05m

Bucharest Otopeni Intl

Wed 11/18

6:00 am-4:50 pm

2 stops18h 50m

$796

ChicagoBucharest

MDW - OTP

MDWOTP

Chicago Midway

Wed 10/28

12:30 pm-2:10 pm

2 stops18h 40m

Bucharest Otopeni Intl

Mon 11/9

6:00 am-4:50 pm

2 stops18h 50m

$797

ChicagoBucharest

MDW - OTP

MDWOTP

Chicago Midway

Sun 8/16

1:27 pm-1:40 pm

2 stops16h 13m

Bucharest Otopeni Intl

Wed 8/26

7:05 am-6:01 pm

2 stops18h 56m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 49 resultsSorted by cheapest first
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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, July is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $278). Flying from Illinois to Bucharest in August is currently the most expensive (average of $495). 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.

How much does it cost to fly round-trip from Illinois to Bucharest?

How far ahead should I book a flight from Illinois to Bucharest?

To ensure you get the cheapest price possible for a flight from Illinois to Bucharest, you should look to book at least 12 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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, Turkish Airlines, and United Airlines can get you from Illinois to Bucharest in just under 12h 45m. Your travel time can differ by up to 2h 56m. There are 5198 mi between Illinois and Bucharest. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Bucharest one-way?

    To fly one-way, consider booking your trip with Austrian Airlines, which is currently one of the cheapest options available, starting at $251. KLM flights start at $270 while deals on Lufthansa start at $280 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.

  • What are the cheapest flights from Illinois to Bucharest?

    The cheapest flight price from Illinois to Bucharest is $423. On average you can expect to pay $706. The most popular route, (Chicago O'Hare Intl - Bucharest Otopeni Intl), can usually be booked for $736.

  • 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, July is the cheapest month in which you can book a flight from Illinois to Bucharest (average of $278). Flying from Illinois to Bucharest in August is currently the most expensive (average of $495). 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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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 June 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$300Average$729FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$418Average$760FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$503Average$587FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$510Average$950FlexibilityNo cancel feeOn-time77%
Air SerbiaCheapest$537Average$746FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$539Average$790FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$553Average$779FlexibilityNo cancel feeOn-time76%
SWISSCheapest$569Average$937FlexibilityNo cancel feeOn-time79%
DeltaCheapest$575Average$1,013FlexibilityNo cancel feeOn-timeN/A
LOTCheapest$586Average$908FlexibilityNo cancel feeOn-time81%

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