What is the cheapest airline that flies from Lambert-St Louis to Romania?

Lufthansa is the most popular carrier operating from Lambert-St Louis to Romania

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?

As of July 2026, there are 2 operators available to choose from 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.

$457 Cheap Flights from St. Louis to Romania in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Romania

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:59 pm - 12:00 pm

STL

OTP

15h 01m

2 stops

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$863Lufthansa

Sun, Sep 13 - Fri, Oct 2

12:59 pm - 12:00 pm

STL

OTP

15h 01m

2 stops

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$864Lufthansa

Sun, Sep 13 - Fri, Oct 2

3:30 pm - 1:05 pm

STL

OTP

13h 35m

1 stop

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$865Lufthansa

Sun, Sep 13 - Fri, Oct 2

3:30 pm - 1:05 pm

STL

OTP

13h 35m

1 stop

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$866Lufthansa

Sun, Sep 13 - Fri, Oct 2

3:30 pm - 1:05 pm

STL

OTP

13h 35m

1 stop

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$867Lufthansa

Sun, Sep 13 - Fri, Oct 2

12:59 pm - 12:00 pm

STL

OTP

15h 01m

2 stops

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$868Lufthansa

Sun, Sep 13 - Fri, Oct 2

12:59 pm - 12:00 pm

STL

OTP

15h 01m

2 stops

6:05 am - 9:09 pm

OTP

STL

23h 04m

2 stops

$872Lufthansa

Sun, Sep 13 - Fri, Oct 2

12:59 pm - 12:00 pm

STL

OTP

15h 01m

2 stops

6:05 am - 9:09 pm

OTP

STL

23h 04m

2 stops

$877Lufthansa

Sun, Sep 13 - Fri, Oct 2

12:10 pm - 1:30 pm

STL

TSR

17h 20m

2 stops

2:10 pm - 2:04 pm

TSR

STL

31h 54m

2 stops

$1,149Multiple Airlines

Fri, Aug 7 - Fri, Aug 14

12:59 pm - 1:30 pm

STL

TSR

16h 31m

2 stops

5:55 am - 1:25 pm

TSR

STL

15h 30m

2 stops

$1,234Multiple Airlines

Wed, Sep 16 - Fri, Oct 9

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Lufthansa flights from St. Louis to Romania

Our best Lufthansa deals on St. Louis to Romania flight tickets

Lufthansa

Sep 13

STL12:59 pmLambert-St Louis

15h 01m

2 stops

OTP12:00 pmBucharest Otopeni Intl

Oct 2

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$863

Lufthansa

Sep 13

STL12:59 pmLambert-St Louis

15h 01m

2 stops

OTP12:00 pmBucharest Otopeni Intl

Oct 2

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$864

Lufthansa

Sep 13

STL3:30 pmLambert-St Louis

13h 35m

1 stop

OTP1:05 pmBucharest Otopeni Intl

Oct 2

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$865

United Airlines flights from St. Louis to Romania

Our best United Airlines deals on St. Louis to Romania flight tickets

United Airlines

Sep 2

STL7:00 amLambert-St Louis

27h 35m

2 stops

OTP6:35 pmBucharest Otopeni Intl

Sep 20

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$946

United Airlines

Sep 2

STL7:00 amLambert-St Louis

27h 35m

3 stops

OTP6:35 pmBucharest Otopeni Intl

Sep 20

OTP6:05 amBucharest Otopeni Intl

25h 33m

2 stops

STL11:38 pmLambert-St Louis

$956

United Airlines

Sep 6

STL3:30 pmLambert-St Louis

13h 35m

1 stop

OTP1:05 pmBucharest Otopeni Intl

Sep 20

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$1,002

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

12:59 pm-12:00 pm

2 stops15h 01m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$863

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

12:59 pm-12:00 pm

2 stops15h 01m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$864

Quickest round-trip

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$865

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$866

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$867

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

12:59 pm-12:00 pm

2 stops15h 01m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-1:25 pm

1 stop15h 20m

$868

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

12:59 pm-12:00 pm

2 stops15h 01m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-9:09 pm

2 stops23h 04m

$872

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/13

12:59 pm-12:00 pm

2 stops15h 01m

Bucharest Otopeni Intl

Fri 10/2

6:05 am-9:09 pm

2 stops23h 04m

$877

St. LouisTimisoara

STL - TSR

STLTSR

Lambert-St Louis

Fri 8/7

12:10 pm-1:30 pm

2 stops17h 20m

Timisoara

Fri 8/14

2:10 pm-2:04 pm

2 stops31h 54m

$1,149

St. LouisTimisoara

STL - TSR

STLTSR

Lambert-St Louis

Wed 9/16

12:59 pm-1:30 pm

2 stops16h 31m

Timisoara

Fri 10/9

5:55 am-1:25 pm

2 stops15h 30m

$1,234

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Romania?

The cheapest month to fly to Romania from St. Louis is in February. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you are unable to visit Romania during the month of February, then departing from St. Louis during the month January is also very affordable. Most momondo users find prices during this month for around $0.

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

You could potentially save up to 48% 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	14h 47m
Direct flights	None

The fastest flight from St. Louis to Romania takes 14h 47m

There are no direct flights from St. Louis to Romania. There are no popular flight routes from St. Louis to Romania.

Search flight deals

Frequently asked questions about flying from St. Louis to Romania

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?
As of July 2026, there are 2 operators available to choose from 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 Airlines	PriceFrom $574	Free Cancellation	Rating 7.4 9,926 reviews		Search United Airlines flights
Lufthansa	PriceFrom $800	Free Cancellation	Rating 6.8 8,108 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.