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$253+ Cheap flights from Illinois to Romania

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OTP
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Illinois to Romania

Cheapest flights from Illinois to Romania
Explore the most affordable flight options available from Illinois to Romania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This CrystalTravel deal was found by Cheapflights users on 12/19. 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.
Thu 12/254:10 pmORD - OTP
1 stop24h 15mMultiple Airlines
Tue 2/245:55 amOTP - ORD
1 stop15h 30mMultiple Airlines
Deal found 12/19$537
This CrystalTravel deal was found by Cheapflights users on 12/21. 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.
Wed 12/249:05 pmORD - OTP
2 stops19h 20mMultiple Airlines
Fri 3/206:05 amOTP - ORD
1 stop20h 20mMultiple Airlines
Deal found 12/21$550
This KAYAK deal was found by Cheapflights users on 12/19. 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.
Thu 12/254:10 pmORD - OTP
1 stop24h 15mSWISS
Tue 2/246:30 amOTP - ORD
1 stop17h 50mSWISS
Deal found 12/19$568
This FlightHub deal was found by Cheapflights users on 12/19. 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.
Sat 12/276:25 pmORD - OTP
1 stop21h 25mLufthansa
Sat 2/285:55 amOTP - ORD
1 stop13h 15mLufthansa
Deal found 12/19$573
This KAYAK deal was found by Cheapflights users on 12/19. 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.
Sat 12/275:50 pmORD - OTP
2 stops46h 40mSWISS
Sat 2/284:40 pmOTP - ORD
1 stop28h 05mSWISS
Deal found 12/19$576
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Thu 12/258:50 amORD - OTP
2 stops31h 00mUnited Airlines
Sat 2/215:55 amOTP - ORD
1 stop17h 25mUnited Airlines
Deal found 12/19$581
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Thu 12/252:30 pmORD - OTP
2 stops25h 20mUnited Airlines
Wed 2/186:05 amOTP - ORD
2 stops16h 50mUnited Airlines
Deal found 12/19$585
This KAYAK deal was found by Cheapflights users on 12/19. 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.
Wed 12/246:10 pmORD - OTP
2 stops22h 15mSWISS
Mon 2/166:30 amOTP - ORD
1 stop14h 15mSWISS
Deal found 12/19$589
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Thu 12/251:24 pmORD - OTP
2 stops26h 26mUnited Airlines
Sun 2/155:55 amOTP - ORD
2 stops20h 47mUnited Airlines
Deal found 12/19$591
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/241:55 pmORD - CLJ
2 stops39h 45mUnited Airlines
Thu 3/56:00 amCLJ - ORD
1 stop20h 25mUnited Airlines
Deal found 12/19$627
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/2412:45 pmORD - CLJ
2 stops40h 55mUnited Airlines
Wed 3/46:00 amCLJ - ORD
2 stops25h 59mUnited Airlines
Deal found 12/19$637
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Tue 12/238:08 pmORD - CLJ
2 stops57h 32mUnited Airlines
Wed 3/46:00 amCLJ - ORD
1 stop16h 10mUnited Airlines
Deal found 12/19$638

Find flight deals from Illinois to Romania

Keep the following information in mind while searching for Illinois to Romania flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$486
(Kiwi.com)

One-way from

$253
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$1,017

Good round-trip deal

$811 or less

Good one-way deal

$218 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 Romania
Search Deals
One-way flight from Illinois to Romania
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($270 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Romania.
Search Deals
Price to beat on a one-way flight from Illinois to Romania.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Romania 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 December 21, 2025.
Use the filters below to find and compare flights from Illinois to Romania that are best for you.

Fly from

Illinois

Fly to

Romania

Route

Depart

Return

Price

ChicagoCluj Napoca

ORD - CLJ

ORDCLJ

Chicago O'Hare Intl

Sun 3/1

9:50 pm-12:55 am

1 stop19h 05m

Cluj Napoca

Sun 3/8

6:00 am-6:25 pm

1 stop20h 25m

$510

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Thu 4/23

11:25 am-8:15 pm

1 stop24h 50m

Bucharest Otopeni Intl

Thu 5/7

12:55 pm-9:40 am

1 stop28h 45m

$526

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 2/9

4:05 pm-2:05 pm

1 stop14h 00m

Bucharest Otopeni Intl

Mon 2/23

5:55 am-11:10 am

1 stop13h 15m

$527

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 2/28

8:20 pm-8:50 am

1 stop28h 30m

Bucharest Otopeni Intl

Wed 3/18

10:10 am-11:05 am

1 stop31h 55m

$531

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 3/24

10:50 pm-6:35 pm

1 stop12h 45m

Bucharest Otopeni Intl

Tue 4/7

6:05 am-12:55 pm

1 stop14h 50m

$534

ChicagoOradea

ORD - OMR

ORDOMR

Chicago O'Hare Intl

Mon 3/2

6:00 pm-1:30 pm

1 stop11h 30m

Oradea

Tue 3/31

2:15 pm-10:08 am

2 stops27h 53m

$540

ChicagoOradea

ORD - OMR

ORDOMR

Chicago O'Hare Intl

Mon 2/16

6:00 pm-1:30 pm

1 stop11h 30m

Oradea

Tue 3/17

2:10 pm-7:25 pm

1 stop12h 15m

$540

ChicagoCluj Napoca

ORD - CLJ

ORDCLJ

Chicago O'Hare Intl

Sat 1/17

1:13 pm-1:40 pm

2 stops16h 27m

Cluj Napoca

Wed 2/4

2:25 pm-2:55 pm

2 stops32h 30m

$542

ChicagoCluj Napoca

ORD - CLJ

ORDCLJ

Chicago O'Hare Intl

Sat 1/17

6:00 pm-1:40 pm

1 stop11h 40m

Cluj Napoca

Wed 2/4

2:25 pm-8:52 am

2 stops26h 27m

$542

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Tue 2/3

4:05 pm-10:05 am

2 stops34h 00m

Cluj Napoca

Tue 2/10

2:25 pm-11:59 pm

2 stops17h 34m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 46 results
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Best time to book a flight from Illinois to Romania

Have a flexible travel schedule? Discover the best time to fly to Romania 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 Romania

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

Currently, April is the cheapest month in which you can book a flight from Illinois to Romania (average of $334). Flying from Illinois to Romania in June is currently the most expensive (average of $759). 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 RO?

Find hourly flight availability from Illinois to Romania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

It’s typically best to fly out from Illinois to Romania in the evening. Doing so could potentially save you 11% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

Travelers seeking maximum savings on their Illinois to Romania flight should consider departing on Friday at noon when fares are most often at their lowest. Thursday 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 Romania. 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 Romania?

    For as low as $542, Lufthansa can have you in Romania from Illinois in 16h 27m. Airlines will cover a distance of 5008 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Turkish Airlines. According to our data, you can fly for as low as $236. Users have also found prices from $376 and $394 on SWISS and Lufthansa, respectively.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Illinois to Romania (average of $334). Flying from Illinois to Romania in June is currently the most expensive (average of $759). 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 Illinois to Romania

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 Romania

Discover the top 10 airlines that operate flights from Illinois to Romania. 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$385Average$695FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$504Average$673FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$517Average$776FlexibilityNo cancel feeOn-time78%
LOTCheapest$562Average$947FlexibilityNo cancel feeOn-time81%
KLMCheapest$568Average$894FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$569Average$749FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$569Average$944FlexibilityNo cancel feeOn-time76%
DeltaCheapest$575Average$992FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$575Average$795FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$595Average$875FlexibilityNo cancel feeOn-time69%

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