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Cheap flights from St. Louis to Romania from $318

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 Romania departing on 3/4. 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 St. Louis to Romania

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
7:05 am - 2:05 pm
STL
-
OTP
23h 00m
2 stops
British Airways Logo
8:15 am - 11:48 pm
OTP
-
STL
23h 33m
2 stops
$539British Airways
Sun, Apr 19 - Tue, Apr 28
Lufthansa Logo
6:55 pm - 1:05 am
STL
-
OTP
22h 10m
2 stops
Lufthansa Logo
6:05 am - 10:59 pm
OTP
-
STL
23h 54m
2 stops
$542Lufthansa
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
3:30 pm - 4:30 pm
STL
-
OTP
17h 00m
1 stop
Multiple Airlines Logo
1:50 pm - 3:24 pm
OTP
-
STL
33h 34m
2 stops
$545Multiple Airlines
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 12:50 pm
STL
-
OTP
13h 20m
1 stop
Lufthansa Logo
6:05 am - 1:25 pm
OTP
-
STL
15h 20m
1 stop
$550Lufthansa
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
2:40 pm - 6:35 pm
STL
-
OTP
19h 55m
2 stops
United Airlines Logo
6:05 am - 8:54 pm
OTP
-
STL
22h 49m
2 stops
$552United Airlines
Wed, Apr 8 - Wed, Apr 15
Lufthansa Logo
3:30 pm - 4:20 pm
STL
-
OTP
16h 50m
1 stop
Lufthansa Logo
6:05 am - 9:08 pm
OTP
-
STL
23h 03m
2 stops
$553Lufthansa
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
3:30 pm - 4:30 pm
STL
-
OTP
17h 00m
1 stop
United Airlines Logo
6:05 am - 9:08 pm
OTP
-
STL
23h 03m
2 stops
$555United Airlines
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 4:30 pm
STL
-
OTP
17h 00m
1 stop
Lufthansa Logo
5:15 pm - 1:25 pm
OTP
-
STL
28h 10m
1 stop
$559Lufthansa
Sun, Mar 29 - Tue, Apr 14
United Airlines Logo
3:30 pm - 4:30 pm
STL
-
OTP
17h 00m
1 stop
United Airlines Logo
1:50 pm - 3:24 pm
OTP
-
STL
33h 34m
2 stops
$560United Airlines
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
4:05 pm - 6:15 pm
STL
-
SBZ
19h 10m
3 stops
Multiple Airlines Logo
6:00 am - 10:52 pm
SBZ
-
STL
23h 52m
3 stops
$2,190Multiple Airlines
Fri, Mar 20 - Fri, Mar 27

United Airlines flights from St. Louis to Romania

Our best United Airlines deals on St. Louis to Romania flight tickets
United Airlines
Apr 8
STL2:40 pmLambert-St Louis
19h 55m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Apr 15
OTP6:05 amBucharest Otopeni Intl
22h 49m
2 stops
STL8:54 pmLambert-St Louis
$552
United Airlines
Mar 18
STL8:30 amLambert-St Louis
20h 50m
2 stops
OTP12:20 pmBucharest Otopeni Intl
Mar 25
OTP6:05 amBucharest Otopeni Intl
22h 37m
2 stops
STL9:42 pmLambert-St Louis
$553
United Airlines
Mar 29
STL3:30 pmLambert-St Louis
17h 00m
1 stop
OTP4:30 pmBucharest Otopeni Intl
Apr 14
OTP6:05 amBucharest Otopeni Intl
23h 03m
2 stops
STL9:08 pmLambert-St Louis
$555

Lufthansa flights from St. Louis to Romania

Our best Lufthansa deals on St. Louis to Romania flight tickets
Lufthansa
Mar 2
STL6:55 pmLambert-St Louis
22h 10m
2 stops
OTP1:05 amBucharest Otopeni Intl
Mar 9
OTP6:05 amBucharest Otopeni Intl
23h 54m
2 stops
STL10:59 pmLambert-St Louis
$542
Lufthansa
Apr 8
STL3:30 pmLambert-St Louis
16h 50m
1 stop
OTP4:20 pmBucharest Otopeni Intl
Apr 15
OTP6:05 amBucharest Otopeni Intl
15h 20m
1 stop
STL1:25 pmLambert-St Louis
$548
Lufthansa
Apr 8
STL3:30 pmLambert-St Louis
13h 20m
1 stop
OTP12:50 pmBucharest Otopeni Intl
Apr 15
OTP6:05 amBucharest Otopeni Intl
15h 20m
1 stop
STL1:25 pmLambert-St Louis
$550

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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, momondo users made 832,500 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from St. Louis to Romania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/19

7:05 am-2:05 pm

2 stops23h 00m

Bucharest Otopeni Intl

Tue 4/28

8:15 am-11:48 pm

2 stops23h 33m

$539

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 3/2

6:55 pm-1:05 am

2 stops22h 10m

Bucharest Otopeni Intl

Mon 3/9

6:05 am-10:59 pm

2 stops23h 54m

$542

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 3/29

3:30 pm-4:30 pm

1 stop17h 00m

Bucharest Otopeni Intl

Tue 4/14

1:50 pm-3:24 pm

2 stops33h 34m

$545

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 4/8

3:30 pm-12:50 pm

1 stop13h 20m

Bucharest Otopeni Intl

Wed 4/15

6:05 am-1:25 pm

1 stop15h 20m

$550

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 4/8

2:40 pm-6:35 pm

2 stops19h 55m

Bucharest Otopeni Intl

Wed 4/15

6:05 am-8:54 pm

2 stops22h 49m

$552

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 4/8

3:30 pm-4:20 pm

1 stop16h 50m

Bucharest Otopeni Intl

Wed 4/15

6:05 am-9:08 pm

2 stops23h 03m

$553

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 3/29

3:30 pm-4:30 pm

1 stop17h 00m

Bucharest Otopeni Intl

Tue 4/14

6:05 am-9:08 pm

2 stops23h 03m

$555

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 3/29

3:30 pm-4:30 pm

1 stop17h 00m

Bucharest Otopeni Intl

Tue 4/14

5:15 pm-1:25 pm

1 stop28h 10m

$559

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/19

3:30 pm-4:30 pm

1 stop17h 00m

Bucharest Otopeni Intl

Tue 4/28

1:50 pm-3:24 pm

2 stops33h 34m

$560

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Fri 3/20

4:05 pm-6:15 pm

3 stops19h 10m

Sibiu

Fri 3/27

6:00 am-10:52 pm

3 stops23h 52m

$2,190

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 Romania from

How to get the cheapest flight ticket from St. Louis to Romania

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 Romania flights?

You could potentially save up to 15% on your flight if you consider stops on a St. Louis to Romania flight.

Cheap St. Louis to Romania flight deals and tips

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

Fastest flight time

15h 40m

Direct flights

None
The fastest flight from St. Louis to Romania takes 15h 40m
There are no direct flights from St. Louis to Romania. There are no popular flight routes from St. Louis to Romania.
Search flight deals

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

    Prices for flights from Lambert-St Louis Airport to Romania were last updated today.

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

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

    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 Lambert-St Louis Airport to Romania.

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

    The necessary travel and health documents for your Romania trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Romania

Compare and see reviews for airlines that fly from St. Louis to Romania with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $707Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
LufthansaPriceFrom $780Free CancellationRating
6.8
7,759 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Romania?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Romania from St. Louis.

Can I find flights from St. Louis to Romania with flexible booking policies on momondo?

momondo does allow users to show only those flights to Romania from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

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 Romania from St. Louis.

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

Yes momondo offers price alerts on flights to Romania from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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