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Cheap flights from Illinois to Bucharest from $277

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Bucharest departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Illinois to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
9:50 pm - 6:35 pm
ORD
-
OTP
12h 45m1 stop
Lufthansa Logo
5:55 am - 11:10 am
OTP
-
ORD
13h 15m1 stop
$520Lufthansa
Sat, Jan 24 - Sat, Jan 31
Turkish Airlines Logo
7:50 pm - 8:25 pm
ORD
-
OTP
16h 35m1 stop
Turkish Airlines Logo
9:30 am - 6:15 pm
OTP
-
ORD
16h 45m1 stop
$522Turkish Airlines
Wed, Apr 1 - Wed, May 6
SWISS Logo
5:50 pm - 12:25 am
ORD
-
OTP
22h 35m2 stops
SWISS Logo
6:30 am - 4:20 pm
OTP
-
ORD
17h 50m1 stop
$527SWISS
Sat, Jan 24 - Sat, Jan 31
SWISS Logo
9:05 pm - 12:25 am
ORD
-
OTP
19h 20m2 stops
SWISS Logo
4:40 pm - 12:45 pm
OTP
-
ORD
28h 05m1 stop
$528SWISS
Wed, Jan 14 - Thu, Jan 22
Turkish Airlines Logo
11:50 am - 2:10 pm
ORD
-
OTP
18h 20m1 stop
Turkish Airlines Logo
10:10 am - 7:25 pm
OTP
-
ORD
16h 15m1 stop
$529Turkish Airlines
Sat, Feb 28 - Wed, Mar 18
Multiple Airlines Logo
6:30 pm - 1:05 am
ORD
-
OTP
22h 35m2 stops
Multiple Airlines Logo
1:55 pm - 5:20 pm
OTP
-
ORD
35h 25m3 stops
$535Multiple Airlines
Mon, Jan 19 - Tue, Feb 3
British Airways Logo
5:20 pm - 7:35 pm
STL
-
OTP
18h 15m2 stops
British Airways Logo
7:35 am - 10:59 pm
OTP
-
STL
23h 24m2 stops
$552British Airways
Sun, Jan 11 - Sun, Jan 25
United Airlines Logo
6:00 am - 11:50 pm
STL
-
OTP
33h 50m2 stops
United Airlines Logo
5:55 am - 10:58 pm
OTP
-
STL
25h 03m2 stops
$562United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
4:35 pm - 2:10 pm
STL
-
OTP
37h 35m2 stops
United Airlines Logo
5:55 am - 7:27 pm
OTP
-
STL
21h 32m2 stops
$567United Airlines
Thu, Jan 29 - Mon, Feb 2
Multiple Airlines Logo
4:05 pm - 12:25 am
STL
-
OTP
24h 20m2 stops
Multiple Airlines Logo
6:55 am - 9:13 pm
OTP
-
STL
22h 18m3 stops
$576Multiple Airlines
Thu, Jan 22 - Tue, Jan 27

United Airlines flights from Illinois to Bucharest Otopeni Intl Airport

Our best United Airlines deals on Illinois to Bucharest Otopeni Intl Airport flight tickets
United Airlines
Jan 29
STL6:00 amLambert-St Louis
33h 50m
2 stops
OTP11:50 pmBucharest Otopeni Intl
Feb 2
OTP5:55 amBucharest Otopeni Intl
25h 03m
2 stops
STL10:58 pmLambert-St Louis
$562
Find similar
United Airlines
Jan 29
STL4:35 pmLambert-St Louis
37h 35m
2 stops
OTP2:10 pmBucharest Otopeni Intl
Feb 2
OTP5:55 amBucharest Otopeni Intl
21h 32m
2 stops
STL7:27 pmLambert-St Louis
$567
Find similar
United Airlines
Feb 11
ORD1:00 pmChicago O'Hare Intl
17h 00m
2 stops
OTP2:00 pmBucharest Otopeni Intl
Feb 15
OTP5:55 amBucharest Otopeni Intl
13h 15m
1 stop
ORD11:10 amChicago O'Hare Intl
$581
Find similar

Delta flights from Illinois to Bucharest Otopeni Intl Airport

Our best Delta deals on Illinois to Bucharest Otopeni Intl Airport flight tickets
Delta
Jan 13
ORD9:35 amChicago O'Hare Intl
18h 30m
2 stops
OTP12:05 pmBucharest Otopeni Intl
Jan 23
OTP6:00 amBucharest Otopeni Intl
16h 20m
1 stop
ORD2:20 pmChicago O'Hare Intl
$568
Find similar
Delta
Jan 19
MDW1:26 pmChicago Midway
15h 34m
2 stops
OTP1:00 pmBucharest Otopeni Intl
Feb 3
OTP6:00 amBucharest Otopeni Intl
19h 29m
2 stops
MDW5:29 pmChicago Midway
$575
Find similar
Delta
Jan 24
MDW10:46 amChicago Midway
17h 19m
2 stops
OTP12:05 pmBucharest Otopeni Intl
Feb 7
OTP6:00 amBucharest Otopeni Intl
18h 16m
2 stops
MDW4:16 pmChicago Midway
$578
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Bucharest Otopeni Intl Airport 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Illinois to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 1/24

9:50 pm-6:35 pm

1 stop12h 45m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-11:10 am

1 stop13h 15m

$520

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 4/1

7:50 pm-8:25 pm

1 stop16h 35m

Bucharest Otopeni Intl

Wed 5/6

9:30 am-6:15 pm

1 stop16h 45m

$522

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 1/24

5:50 pm-12:25 am

2 stops22h 35m

Bucharest Otopeni Intl

Sat 1/31

6:30 am-4:20 pm

1 stop17h 50m

$527

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Wed 1/14

9:05 pm-12:25 am

2 stops19h 20m

Bucharest Otopeni Intl

Thu 1/22

4:40 pm-12:45 pm

1 stop28h 05m

$528

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 2/28

11:50 am-2:10 pm

1 stop18h 20m

Bucharest Otopeni Intl

Wed 3/18

10:10 am-7:25 pm

1 stop16h 15m

$529

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 1/19

6:30 pm-1:05 am

2 stops22h 35m

Bucharest Otopeni Intl

Tue 2/3

1:55 pm-5:20 pm

3 stops35h 25m

$535

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 1/11

5:20 pm-7:35 pm

2 stops18h 15m

Bucharest Otopeni Intl

Sun 1/25

7:35 am-10:59 pm

2 stops23h 24m

$552

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/29

6:00 am-11:50 pm

2 stops33h 50m

Bucharest Otopeni Intl

Mon 2/2

5:55 am-10:58 pm

2 stops25h 03m

$562

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/29

4:35 pm-2:10 pm

2 stops37h 35m

Bucharest Otopeni Intl

Mon 2/2

5:55 am-7:27 pm

2 stops21h 32m

$567

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/22

4:05 pm-12:25 am

2 stops24h 20m

Bucharest Otopeni Intl

Tue 1/27

6:55 am-9:13 pm

3 stops22h 18m

$576

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bucharest from

How to get the cheapest flight ticket from Illinois to Bucharest Otopeni Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bucharest Otopeni Intl Airport?

If you aren’t able to travel during the month of January, then book flights to Bucharest Otopeni Intl Airport from Illinois during November instead. Flights to Bucharest Otopeni Intl Airport in November, while not as cheap as those in January, still average around $560.

What is the cheapest time of day to depart on your flight to Bucharest Otopeni Intl Airport?

Our most recent data shows that the best time of day to fly to Bucharest Otopeni Intl Airport is in the morning. Flights from Illinois to Bucharest Otopeni Intl Airport during this time can be as low as $607. In the afternoon is when there is more demand to fly to Bucharest Otopeni Intl Airport, so prices are often more expensive at around $872 per ticket.

What is the cheapest Illinois to Bucharest Otopeni Intl flight route?

Fly from Chicago O'Hare Intl to Bucharest Otopeni Intl for the best Illinois - Bucharest Otopeni Intl flight prices

How far in advance should I book a flight to Bucharest Otopeni Intl Airport?

You are more likely to see cheaper flights to Bucharest Otopeni Intl Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Bucharest Otopeni Intl Airport for around $725 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bucharest Otopeni Intl Airport from Illinois for as low as $634 on momondo.

What cabin class options are available on Illinois to Bucharest Otopeni Intl flights?

There is only 1 cabin class available to choose from on Illinois to Bucharest Otopeni Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Bucharest Otopeni Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Bucharest Otopeni Intl Airport.

Cheap Illinois to Bucharest Otopeni Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Bucharest Otopeni Intl Airport

Best Price Found

$827

Fastest flight time

9h 50m

Direct flights

Mon and Fri
The best flight deal from Illinois to Bucharest Otopeni Intl Airport found on momondo in the last 72 hours is $827
The fastest flight from Illinois to Bucharest Otopeni Intl Airport takes 9h 50m
Direct flights go from Illinois to Bucharest Otopeni Intl Airport on Monday and Friday. There are no airlines offering direct flights.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Bucharest Otopeni Intl Airport?

    Prices for flights from Illinois to Bucharest Otopeni Intl Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to Bucharest Otopeni Intl Airport?

  • How old do you have to be to fly from Illinois to Bucharest Otopeni Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Bucharest Otopeni Intl Airport.

  • What documentation or ID do you need to fly to Bucharest Otopeni Intl Airport?

    The travel and health documents required for your trip to Bucharest Otopeni Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bucharest Otopeni Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Illinois to Bucharest Otopeni Intl Airport?

Best airlines flying from Illinois to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from Illinois to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $385Free CancellationRating
7.4
1,605 reviews
Search Scandinavian Airlines flights
Turkish AirlinesPriceFrom $503Free CancellationRating
7.3
4,090 reviews
Search Turkish Airlines flights
Austrian AirlinesPriceFrom $517Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
LOTPriceFrom $538Free CancellationRating
7.6
1,146 reviews
Search LOT flights
KLMPriceFrom $568Free CancellationRating
7.7
1,432 reviews
Search KLM flights
LufthansaPriceFrom $570Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
British AirwaysPriceFrom $575Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
United AirlinesPriceFrom $595Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
SWISSPriceFrom $597Free CancellationRating
7.5
1,810 reviews
Search SWISS flights
Air FrancePriceFrom $618Free CancellationRating
7.4
1,504 reviews
Search Air France flights

Traveling to a place near Bucharest?

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

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Bucharest?

It is quick and easy to find Illinois to Bucharest flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bucharest that suits you.

Can I find flights from Illinois to Bucharest with flexible booking policies on momondo?

All flight searches from Illinois to Bucharest on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Bucharest?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bucharest from Illinois.

I’m not ready to book a flight from Illinois to Bucharest right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bucharest, momondo offers a useful price alert feature which will track prices for flights to Bucharest from Illinois and alert you when they change.

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