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Cheap flights from St. Louis to Bucharest from $349

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 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
6:55 pm - 6:35 pm
STL
-
OTP
15h 40m
2 stops
Lufthansa Logo
6:05 am - 1:25 pm
OTP
-
STL
15h 20m
1 stop
$844Lufthansa
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
6:55 pm - 6:35 pm
STL
-
OTP
15h 40m
2 stops
Multiple Airlines Logo
6:20 am - 8:25 pm
OTP
-
STL
22h 05m
2 stops
$857Multiple Airlines
Sun, Apr 26 - Sun, May 3
Turkish Airlines Logo
7:45 am - 8:15 pm
STL
-
OTP
28h 30m
2 stops
Turkish Airlines Logo
9:35 pm - 9:13 pm
OTP
-
STL
31h 38m
2 stops
$870Turkish Airlines
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
3:30 pm - 1:05 pm
STL
-
OTP
13h 35m
1 stop
Multiple Airlines Logo
9:30 am - 5:30 pm
OTP
-
STL
40h 00m
2 stops
$890Multiple Airlines
Mon, Jul 27 - Mon, Aug 3
Turkish Airlines Logo
5:33 pm - 8:15 pm
STL
-
OTP
42h 42m
2 stops
Turkish Airlines Logo
9:35 pm - 9:16 pm
OTP
-
STL
31h 41m
2 stops
$936Turkish Airlines
Mon, Jul 27 - Mon, Aug 3
Turkish Airlines Logo
5:33 pm - 8:10 am
STL
-
OTP
30h 37m
2 stops
Turkish Airlines Logo
3:55 pm - 9:16 pm
OTP
-
STL
37h 21m
2 stops
$945Turkish Airlines
Mon, Jul 27 - Mon, Aug 3
Lufthansa Logo
6:55 pm - 6:35 pm
STL
-
OTP
15h 40m
2 stops
Lufthansa Logo
6:05 am - 1:25 pm
OTP
-
STL
15h 20m
1 stop
$991Lufthansa
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
3:30 pm - 1:05 pm
STL
-
OTP
13h 35m
1 stop
Multiple Airlines Logo
9:30 am - 5:30 pm
OTP
-
STL
40h 00m
2 stops
$994Multiple Airlines
Mon, Jul 27 - Sat, Aug 1
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
British Airways Logo
8:10 am - 7:30 pm
OTP
-
STL
19h 20m
1 stop
$1,015British Airways
Sun, Apr 26 - Sun, May 3
Lufthansa Logo
1:13 pm - 1:10 am
STL
-
OTP
27h 57m
2 stops
Lufthansa Logo
5:15 pm - 1:25 pm
OTP
-
STL
28h 10m
1 stop
$1,027Lufthansa
Mon, Jul 27 - Mon, Aug 3

Turkish Airlines flights from St. Louis to Bucharest

Our best Turkish Airlines deals on St. Louis to Bucharest flight tickets
Turkish Airlines
Apr 26
STL7:45 amLambert-St Louis
28h 30m
2 stops
OTP8:15 pmBucharest Otopeni Intl
May 3
OTP9:35 pmBucharest Otopeni Intl
31h 38m
2 stops
STL9:13 pmLambert-St Louis
$870
Turkish Airlines
Apr 8
STL7:45 amLambert-St Louis
28h 25m
2 stops
OTP8:10 pmBucharest Otopeni Intl
Apr 15
OTP3:55 pmBucharest Otopeni Intl
37h 18m
2 stops
STL9:13 pmLambert-St Louis
$891
Turkish Airlines
Jul 27
STL5:33 pmLambert-St Louis
42h 42m
2 stops
OTP8:15 pmBucharest Otopeni Intl
Aug 3
OTP9:35 pmBucharest Otopeni Intl
31h 41m
2 stops
STL9:16 pmLambert-St Louis
$936

Lufthansa flights from St. Louis to Bucharest

Our best Lufthansa deals on St. Louis to Bucharest flight tickets
Lufthansa
Apr 26
STL6:55 pmLambert-St Louis
15h 40m
2 stops
OTP6:35 pmBucharest Otopeni Intl
May 3
OTP6:05 amBucharest Otopeni Intl
15h 20m
1 stop
STL1:25 pmLambert-St Louis
$844
Lufthansa
Apr 26
STL6:55 pmLambert-St Louis
15h 40m
2 stops
OTP6:35 pmBucharest Otopeni Intl
May 3
OTP6:05 amBucharest Otopeni Intl
15h 20m
1 stop
STL1:25 pmLambert-St Louis
$991
Lufthansa
Jul 27
STL1:13 pmLambert-St Louis
27h 57m
2 stops
OTP1:10 amBucharest Otopeni Intl
Aug 3
OTP5:15 pmBucharest Otopeni Intl
28h 10m
1 stop
STL1:25 pmLambert-St Louis
$1,027

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from St. Louis to Bucharest that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/26

6:55 pm-6:35 pm

2 stops15h 40m

Bucharest Otopeni Intl

Sun 5/3

6:05 am-1:25 pm

1 stop15h 20m

$844

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/26

6:55 pm-6:35 pm

2 stops15h 40m

Bucharest Otopeni Intl

Sun 5/3

6:20 am-8:25 pm

2 stops22h 05m

$857

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/26

7:45 am-8:15 pm

2 stops28h 30m

Bucharest Otopeni Intl

Sun 5/3

9:35 pm-9:13 pm

2 stops31h 38m

$870

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 7/27

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Mon 8/3

9:30 am-5:30 pm

2 stops40h 00m

$890

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 7/27

5:33 pm-8:15 pm

2 stops42h 42m

Bucharest Otopeni Intl

Mon 8/3

9:35 pm-9:16 pm

2 stops31h 41m

$936

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 7/27

5:33 pm-8:10 am

2 stops30h 37m

Bucharest Otopeni Intl

Mon 8/3

3:55 pm-9:16 pm

2 stops37h 21m

$945

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/26

6:55 pm-6:35 pm

2 stops15h 40m

Bucharest Otopeni Intl

Sun 5/3

6:05 am-1:25 pm

1 stop15h 20m

$991

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 7/27

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Sat 8/1

9:30 am-5:30 pm

2 stops40h 00m

$994

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/26

9:40 pm-12:50 am

1 stop19h 10m

Bucharest Otopeni Intl

Sun 5/3

8:10 am-7:30 pm

1 stop19h 20m

$1,015

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 7/27

1:13 pm-1:10 am

2 stops27h 57m

Bucharest Otopeni Intl

Mon 8/3

5:15 pm-1:25 pm

1 stop28h 10m

$1,027

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Bucharest

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

Can stopping save me money on St. Louis to Bucharest flights?

You could potentially save up to 46% on your flight if you consider stops on a St. Louis to Bucharest flight.

When to book flights from St. Louis to Bucharest

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

Cheap St. Louis to Bucharest (STL to BUH) flight deals and tips

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

Fastest flight time

13h 35m

Direct flights

None
The fastest flight from St. Louis to Bucharest takes 13h 35m
There are no direct flights from St. Louis to Bucharest. There are no popular flight routes from St. Louis to Bucharest.
Search flight deals

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

    Lambert-St Louis and Bucharest are 5458.3 mi apart from one another. Flights usually cover this in 13h 35m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Bucharest.

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

    The travel and health documents required for your trip to Bucharest 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Bucharest

Compare and see reviews for airlines that fly from St. Louis to Bucharest with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $574Free CancellationRating
7.4
9,529 reviews
Search United Airlines flights
LufthansaPriceFrom $800Free CancellationRating
6.8
7,880 reviews
Search Lufthansa 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 St. Louis to Bucharest?

It is quick and easy to find St. Louis 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 St. Louis to Bucharest with flexible booking policies on momondo?

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

How can momondo help me find flights from St. Louis to Bucharest?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Bucharest.

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Yes. momondo can track prices for St. Louis to Bucharest flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Romania

Fly into one of these airports located in Bucharest

Airports listed have a maximum distance of 9.6 mi from Bucharest
Bucharest Otopeni Intl Airport