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$310+ Cheap flights from Bucharest (BUH) to Chicago (CHI)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUH — CHI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Bucharest to Chicago are usually found in February or April, booked 22 days in advance, depart on a Saturday or Tuesday and return on a Monday

Cheap flight deals from Bucharest to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Bucharest (BUH) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$516
(oojo)

One-way from

$343
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$666
From Bucharest (BUH) to Chicago (CHI)
Search Deals
One-way flight from Bucharest (BUH) to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Bucharest to Chicago

Cheapest flights from Bucharest to Chicago
Explore the most affordable flight options available from Bucharest to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/218:20 amOTP - ORD
1 stop19h 40mLOT
Sat 11/299:55 pmORD - OTP
1 stop31h 55mLOT
Deal found 9/15$516
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:20 amOTP - ORD
1 stop19h 40mLOT
Wed 11/269:55 pmORD - OTP
1 stop31h 55mLOT
Deal found 9/16$517
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:20 amOTP - ORD
1 stop14h 50mLOT
Tue 11/49:55 pmORD - OTP
1 stop11h 45mLOT
Deal found 9/16$583
This LOT deal was found by Cheapflights users on 9/15. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 amOTP - ORD
1 stop16h 00mLOT
Wed 1/79:55 pmORD - OTP
1 stop17h 20mLOT
Deal found 9/15$598
This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:20 amOTP - ORD
1 stop19h 40mLOT
Fri 12/59:55 pmORD - OTP
1 stop17h 20mLOT
Deal found 9/15$630
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:25 pmOTP - ORD
1 stop33h 35mLOT
Wed 1/79:55 pmORD - OTP
1 stop17h 20mLOT
Deal found 9/16$631
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:20 amOTP - ORD
1 stop19h 40mLOT
Wed 1/79:55 pmORD - OTP
1 stop17h 20mLOT
Deal found 9/16$633
This LOT deal was found by Cheapflights users on 9/15. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 amOTP - ORD
1 stop16h 00mLOT
Sun 1/119:55 pmORD - OTP
2 stops19h 50mLOT
Deal found 9/15$634
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:20 amOTP - ORD
1 stop35h 30mAmerican Airlines
Tue 11/411:45 amORD - OTP
2 stops19h 00mAmerican Airlines
Deal found 9/15$637
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:00 amOTP - MDW
2 stops19h 25mDelta
Thu 10/2312:48 pmMDW - OTP
2 stops15h 22mDelta
Deal found 9/15$656
This Delta deal was found by Cheapflights users on 9/17. 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 10/237:00 amOTP - MDW
2 stops19h 25mDelta
Wed 11/510:40 amMDW - OTP
2 stops17h 25mDelta
Deal found 9/17$660
This Delta deal was found by Cheapflights users on 9/16. 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 11/126:00 amOTP - MDW
2 stops18h 39mDelta
Wed 11/2610:47 amMDW - OTP
2 stops18h 13mDelta
Deal found 9/16$663

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bucharest to Chicago 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 September 17, 2025.
Use the filters below to find and compare flights from Bucharest to Chicago that are best for you.

Fly from

Bucharest

Fly to

Chicago

Route

Depart

Return

Price

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sat 11/8

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Thu 12/11

9:45 pm-7:30 pm

1 stop13h 45m

$639

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Sun 11/30

4:10 pm-6:45 pm

1 stop34h 35m

Chicago O'Hare Intl

Mon 12/15

5:10 pm-3:30 pm

1 stop14h 20m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 12/3

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Mon 12/15

9:45 pm-11:00 pm

1 stop17h 15m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Mon 12/1

8:05 am-6:45 pm

1 stop18h 40m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-7:35 pm

1 stop13h 50m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 12/5

8:00 am-6:45 pm

1 stop18h 45m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-7:35 pm

1 stop13h 50m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Fri 12/5

8:00 am-6:45 pm

1 stop18h 45m

Chicago O'Hare Intl

Mon 12/15

9:45 pm-11:00 pm

1 stop17h 15m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Tue 12/2

8:00 am-6:45 pm

1 stop18h 45m

Chicago O'Hare Intl

Sun 12/14

9:45 pm-7:35 pm

1 stop13h 50m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Wed 11/12

8:05 am-5:00 pm

1 stop16h 55m

Chicago O'Hare Intl

Wed 11/26

4:06 pm-3:45 pm

2 stops15h 39m

$640

BucharestChicago

OTP - ORD

OTPORD

Bucharest Otopeni Intl

Thu 12/4

8:00 am-6:45 pm

1 stop18h 45m

Chicago O'Hare Intl

Mon 12/15

9:45 pm-11:00 pm

1 stop17h 15m

$640

BucharestChicago

OTP - MDW

OTPMDW

Bucharest Otopeni Intl

Thu 10/16

7:00 am-6:25 pm

2 stops19h 25m

Chicago Midway

Thu 10/23

12:48 pm-12:10 pm

2 stops15h 22m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 34 results
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Best time to book a flight from Bucharest to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from Bucharest to Chicago. Price data was last updated on September 12, 2025.

Booking 22 days in advance of your planned departure date is, on average, the best time to get cheap flights from Bucharest to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Bucharest to Chicago (average of $245). Flying from Bucharest to Chicago 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 BUH to CHI?

Find hourly flight availability from Bucharest to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Bucharest to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.

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

What’s the top layover airport for flights from Bucharest to Chicago?

Share of 1-stop round-trip flights from Bucharest to Chicago chosen by Cheapflights users in the past 12 months, using the same layover each way.

Warsaw (WAW) – chosen by Cheapflights users on 50% of 1-stop itineraries from Bucharest to Chicago on Cheapflights.

What’s the cheapest layover airport for flights from Bucharest to Chicago?

Average round-trip fare for 1-stop flights from Bucharest to Chicago, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $489.

What’s the fastest layover option from Bucharest to Chicago?

Shortest average travel time for 1-stop one-way flights from Bucharest to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for 1-stop routes: 13h 20m.

Which airport typically offers the quickest layover for flights from Bucharest to Chicago?

Average layover duration for 1-stop one-way flights from Bucharest to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Warsaw (WAW) offer the fastest connection on this route, with an average layover time of 1h 18m.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with KLM, LOT, and SWISS from Bucharest to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,386 reviews
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
LOT
7.6
Good
1,117 reviews
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
SWISS
7.6
Good
1,737 reviews
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Lufthansa
6.8
Okay
7,409 reviews
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
British Airways
6.7
Okay
7,367 reviews
KLM
7.8
Good
1,386 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

Find useful and relevant information for your journey from Bucharest to Chicago. 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 Bucharest to Chicago?

    There are many flights that can get you from Bucharest to Chicago in 18h 40m. Fly via British Airways or Delta to get the fastest option. Bucharest and Chicago are separated by a distance of 5198 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Bucharest to Chicago round-trip?

    Turkish Airlines, at $336, was found to be the cheapest airline from Bucharest to Chicago.Alternate airlines to your destination round-trip include American Airlines and KLM. These flights start at 53% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Bucharest to Chicago (average of $245). Flying from Bucharest to Chicago 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.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Chesterton

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Alternative routes for Bucharest to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Otopeni Intl to O'Hare Intl flights
Cluj Napoca to O'Hare Intl flights
Iaşi to O'Hare Intl flights
Sibiu to O'Hare Intl flights
Otopeni Intl to St. Louis flights
Cluj Napoca to St. Louis flights

Top 9 airlines flying from Bucharest to Chicago

Discover the top 9 airlines that operate flights from Bucharest to Chicago. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$336Average$733FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$548Average$595FlexibilityNo cancel feeOn-time71%
KLMCheapest$570Average$698FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$581Average$654FlexibilityNo cancel feeOn-time77%
LOTCheapest$583Average$619FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$592Average$750FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$594Average$788FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$597Average$692FlexibilityNo cancel feeOn-time70%
DeltaCheapest$623Average$634FlexibilityNo cancel feeOn-timeN/A

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