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Cheap flights from St. Louis to Bucharest from $467

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Bucharest departing on 9/27. 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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Cheap round-trip flights

Lufthansa Logo
6:43 pm - 2:05 pmSTL-OTP
35h 22m2 stops
Lufthansa Logo
2:50 pm - 1:55 pmOTP-STL
31h 05m1 stop
$912Lufthansa
Find Deal
Sat, Nov 22 - Sat, Nov 29
Logo
4:05 pm - 2:05 pmSTL-OTP
38h 00m2 stops
Logo
7:20 pm - 3:29 pmOTP-STL
52h 09m2 stops
$922
Find Deal
Sat, Nov 22 - Sat, Nov 29
Lufthansa Logo
12:25 pm - 11:40 pmSTL-OTP
27h 15m2 stops
Lufthansa Logo
6:05 am - 3:44 pmOTP-STL
17h 39m2 stops
$1,082Lufthansa
Find Deal
Fri, Sep 26 - Sun, Oct 5
British Airways Logo
5:00 pm - 11:50 pmSTL-OTP
22h 50m2 stops
British Airways Logo
8:20 am - 8:25 pmOTP-STL
20h 05m2 stops
$1,092British Airways
Find Deal
Fri, Sep 26 - Sun, Oct 5
Lufthansa Logo
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
Lufthansa Logo
6:05 am - 3:44 pmOTP-STL
17h 39m2 stops
$1,120Lufthansa
Find Deal
Fri, Sep 26 - Sun, Oct 5
Lufthansa Logo
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
Lufthansa Logo
7:20 pm - 3:44 pmOTP-STL
52h 24m2 stops
$1,137Lufthansa
Find Deal
Fri, Sep 26 - Sun, Oct 5
British Airways Logo
2:17 pm - 3:30 pmSTL-OTP
17h 13m2 stops
British Airways Logo
8:05 am - 11:56 pmOTP-STL
23h 51m2 stops
$1,194British Airways
Find Deal
Mon, Nov 24 - Sat, Nov 29
Logo
4:48 pm - 11:00 pmSTL-OTP
22h 12m2 stops
Logo
2:50 pm - 1:55 pmOTP-STL
31h 05m1 stop
$1,294
Find Deal
Mon, Nov 24 - Sat, Nov 29
Air Canada Logo
4:05 pm - 3:50 pmSTL-OTP
15h 45m2 stops
Air Canada Logo
5:55 am - 7:39 pmOTP-STL
21h 44m3 stops
$1,501Air Canada
Find Deal
Mon, Nov 24 - Sat, Nov 29
Air Canada Logo
11:05 am - 2:05 pmSTL-OTP
19h 00m3 stops
Air Canada Logo
5:55 am - 7:39 pmOTP-STL
21h 44m3 stops
$1,512Air Canada
Find Deal
Mon, Nov 24 - Sat, Nov 29

Lufthansa flights from St. Louis to Bucharest Otopeni Intl Airport

Our best Lufthansa deals on St. Louis to Bucharest Otopeni Intl Airport flight tickets
Lufthansa
Nov 22
STL6:43 pmLambert-St Louis
35h 22m
2 stops
OTP2:05 pmBucharest Otopeni Intl
Nov 29
OTP2:50 pmBucharest Otopeni Intl
31h 05m
1 stop
STL1:55 pmLambert-St Louis
$912
Find similar
Lufthansa
Aug 22
STL11:27 amLambert-St Louis
23h 08m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Aug 24
OTP7:20 pmBucharest Otopeni Intl
55h 39m
2 stops
STL6:59 pmLambert-St Louis
$1,023
Find similar
Lufthansa
Sep 26
STL12:25 pmLambert-St Louis
27h 15m
2 stops
OTP11:40 pmBucharest Otopeni Intl
Oct 5
OTP6:05 amBucharest Otopeni Intl
17h 39m
2 stops
STL3:44 pmLambert-St Louis
$1,082
Find similar

British Airways flights from St. Louis to Bucharest Otopeni Intl Airport

Our best British Airways deals on St. Louis to Bucharest Otopeni Intl Airport flight tickets
British Airways
Sep 26
STL5:00 pmLambert-St Louis
22h 50m
2 stops
OTP11:50 pmBucharest Otopeni Intl
Oct 5
OTP8:20 amBucharest Otopeni Intl
20h 05m
2 stops
STL8:25 pmLambert-St Louis
$1,092
Find similar
British Airways
Nov 24
STL2:17 pmLambert-St Louis
17h 13m
2 stops
OTP3:30 pmBucharest Otopeni Intl
Nov 29
OTP8:05 amBucharest Otopeni Intl
23h 51m
2 stops
STL11:56 pmLambert-St Louis
$1,194
Find similar
British Airways
Sep 3
STL7:23 amLambert-St Louis
23h 07m
2 stops
OTP2:30 pmBucharest Otopeni Intl
Sep 11
OTP8:25 amBucharest Otopeni Intl
18h 55m
2 stops
STL7:20 pmLambert-St Louis
$2,989
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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 August 20, 2025.
Use the filters below to find and compare flights from St. Louis to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sat 11/22

6:43 pm-2:05 pm

2 stops35h 22m

Bucharest Otopeni Intl

Sat 11/29

2:50 pm-1:55 pm

1 stop31h 05m

$912

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sat 11/22

4:05 pm-2:05 pm

2 stops38h 00m

Bucharest Otopeni Intl

Sat 11/29

7:20 pm-3:29 pm

2 stops52h 09m

$922

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 9/26

12:25 pm-11:40 pm

2 stops27h 15m

Bucharest Otopeni Intl

Sun 10/5

6:05 am-3:44 pm

2 stops17h 39m

$1,082

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 9/26

5:00 pm-11:50 pm

2 stops22h 50m

Bucharest Otopeni Intl

Sun 10/5

8:20 am-8:25 pm

2 stops20h 05m

$1,092

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 9/26

3:30 pm-5:55 pm

1 stop18h 25m

Bucharest Otopeni Intl

Sun 10/5

6:05 am-3:44 pm

2 stops17h 39m

$1,120

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 9/26

3:30 pm-5:55 pm

1 stop18h 25m

Bucharest Otopeni Intl

Sun 10/5

7:20 pm-3:44 pm

2 stops52h 24m

$1,137

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 11/24

2:17 pm-3:30 pm

2 stops17h 13m

Bucharest Otopeni Intl

Sat 11/29

8:05 am-11:56 pm

2 stops23h 51m

$1,194

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 11/24

4:48 pm-11:00 pm

2 stops22h 12m

Bucharest Otopeni Intl

Sat 11/29

2:50 pm-1:55 pm

1 stop31h 05m

$1,294

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 11/24

4:05 pm-3:50 pm

2 stops15h 45m

Bucharest Otopeni Intl

Sat 11/29

5:55 am-7:39 pm

3 stops21h 44m

$1,501

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 11/24

11:05 am-2:05 pm

3 stops19h 00m

Bucharest Otopeni Intl

Sat 11/29

5:55 am-7:39 pm

3 stops21h 44m

$1,512

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Bucharest from

How to get the cheapest flight ticket from St. Louis 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 typical price of a round-trip flight between St. Louis and Bucharest Otopeni Intl Airport?

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

Our data shows that Thursday is the least expensive day to fly to Bucharest Otopeni Intl Airport. Tickets to fly out on this day can be as low as $1,002. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Bucharest Otopeni Intl Airport for around $1,526.

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 at noon. Flights from St. Louis to Bucharest Otopeni Intl Airport during this time can be as low as $1,002. In the afternoon is when there is more demand to fly to Bucharest Otopeni Intl Airport, so prices are often more expensive at around $1,184 per ticket.

When to book flights from St. Louis to Bucharest Otopeni Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Bucharest Otopeni Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Bucharest Otopeni Intl Airport (STL to OTP) flight deals and tips

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

Direct flights

None
There are no direct flights from St. Louis to Bucharest Otopeni Intl Airport. There are no popular flight routes from St. Louis to Bucharest Otopeni Intl Airport.
Search flight deals

  • How far is Lambert-St Louis to Bucharest Otopeni Intl by plane?

    The straight-line distance from Lambert-St Louis to Bucharest Otopeni Intl is 5451.7 mi. In terms of flight time, this usually takes a little over 13h 45m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Bucharest Otopeni Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Bucharest Otopeni Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Bucharest Otopeni Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Bucharest Otopeni Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Bucharest Otopeni Intl Airport.

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

    The travel and health documents you'll need for your trip to Bucharest Otopeni Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bucharest Otopeni Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Bucharest Otopeni Intl Airport?

Best airlines flying from St. Louis to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from St. Louis to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $780Free CancellationRating
6.8
7,337 reviews
Search Lufthansa flights
United AirlinesPriceFrom $784Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near Bucharest?

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

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Yes. momondo enables you to select and highlight flights to Bucharest from St. Louis with this policy.

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