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

Lufthansa and SWISS are the most popular carriers 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 May 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.

$779 Cheap Flights from St. Louis to Romania in 2026

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Find the cheapest flights from St. Louis to Romania

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:55 am - 12:00 pm

STL

OTP

19h 05m

2 stops

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$828Multiple Airlines

Mon, Sep 7 - Wed, Sep 16

6:00 am - 12:00 pm

STL

OTP

22h 00m

2 stops

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$843United Airlines

Mon, Sep 7 - Wed, Sep 16

3:42 pm - 3:50 pm

STL

OTP

16h 08m

2 stops

7:05 am - 4:55 pm

OTP

STL

17h 50m

2 stops

$850Multiple Airlines

Mon, Sep 7 - Wed, Sep 16

3:30 pm - 4:20 pm

STL

OTP

16h 50m

1 stop

6:05 am - 1:25 pm

OTP

STL

15h 20m

1 stop

$851Lufthansa

Mon, Sep 7 - Wed, Sep 16

12:10 pm - 5:25 pm

STL

CLJ

21h 15m

2 stops

6:00 am - 1:25 pm

CLJ

STL

15h 25m

2 stops

$880Multiple Airlines

Tue, Jul 28 - Wed, Sep 30

7:05 pm - 5:25 pm

STL

CLJ

14h 20m

2 stops

6:00 am - 3:38 pm

CLJ

STL

17h 38m

2 stops

$881Lufthansa

Mon, Jul 27 - Wed, Sep 30

7:05 pm - 5:25 pm

STL

CLJ

14h 20m

2 stops

6:00 am - 8:00 pm

CLJ

STL

22h 00m

2 stops

$885Multiple Airlines

Mon, Jul 27 - Tue, Sep 29

10:20 am - 5:25 pm

STL

CLJ

23h 05m

2 stops

6:00 am - 3:38 pm

CLJ

STL

17h 38m

2 stops

$893United Airlines

Tue, Jul 28 - Thu, Oct 1

1:13 pm - 12:30 am

STL

CLJ

27h 17m

2 stops

3:35 pm - 1:25 pm

CLJ

STL

29h 50m

2 stops

$912Lufthansa

Mon, Jul 27 - Mon, Sep 28

7:05 pm - 5:25 pm

STL

CLJ

14h 20m

2 stops

3:35 pm - 1:25 pm

CLJ

STL

29h 50m

2 stops

$913Lufthansa

Mon, Jul 27 - Mon, Sep 28

United Airlines flights from St. Louis to Romania

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

United Airlines

Sep 7

STL6:00 amLambert-St Louis

22h 00m

2 stops

OTP12:00 pmBucharest Otopeni Intl

Sep 16

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$843

United Airlines

Jul 28

STL5:33 pmLambert-St Louis

15h 52m

2 stops

CLJ5:25 pmCluj Napoca

Sep 30

CLJ1:50 pmCluj Napoca

33h 48m

3 stops

STL3:38 pmLambert-St Louis

$893

United Airlines

Jul 26

STL7:05 pmLambert-St Louis

34h 05m

2 stops

CLJ1:10 pmCluj Napoca

Oct 1

CLJ6:00 amCluj Napoca

18h 26m

2 stops

STL4:26 pmLambert-St Louis

$898

Lufthansa flights from St. Louis to Romania

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

Lufthansa

Sep 7

STL3:30 pmLambert-St Louis

16h 50m

1 stop

OTP4:20 pmBucharest Otopeni Intl

Sep 16

OTP6:05 amBucharest Otopeni Intl

15h 20m

1 stop

STL1:25 pmLambert-St Louis

$851

Lufthansa

Jul 27

STL7:05 pmLambert-St Louis

14h 20m

2 stops

CLJ5:25 pmCluj Napoca

Sep 30

CLJ6:00 amCluj Napoca

17h 38m

2 stops

STL3:38 pmLambert-St Louis

$881

Lufthansa

Jul 27

STL1:13 pmLambert-St Louis

27h 17m

2 stops

CLJ12:30 amCluj Napoca

Sep 28

CLJ3:35 pmCluj Napoca

29h 50m

2 stops

STL1:25 pmLambert-St Louis

$912

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/7

8:55 am-12:00 pm

2 stops19h 05m

Bucharest Otopeni Intl

Wed 9/16

6:05 am-1:25 pm

1 stop15h 20m

$828

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/7

6:00 am-12:00 pm

2 stops22h 00m

Bucharest Otopeni Intl

Wed 9/16

6:05 am-1:25 pm

1 stop15h 20m

$843

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/7

3:42 pm-3:50 pm

2 stops16h 08m

Bucharest Otopeni Intl

Wed 9/16

7:05 am-4:55 pm

2 stops17h 50m

$850

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/7

3:30 pm-4:20 pm

1 stop16h 50m

Bucharest Otopeni Intl

Wed 9/16

6:05 am-1:25 pm

1 stop15h 20m

$851

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Tue 7/28

12:10 pm-5:25 pm

2 stops21h 15m

Cluj Napoca

Wed 9/30

6:00 am-1:25 pm

2 stops15h 25m

$880

Quickest round-trip

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Mon 7/27

7:05 pm-5:25 pm

2 stops14h 20m

Cluj Napoca

Wed 9/30

6:00 am-3:38 pm

2 stops17h 38m

$881

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Mon 7/27

7:05 pm-5:25 pm

2 stops14h 20m

Cluj Napoca

Tue 9/29

6:00 am-8:00 pm

2 stops22h 00m

$885

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Tue 7/28

10:20 am-5:25 pm

2 stops23h 05m

Cluj Napoca

Thu 10/1

6:00 am-3:38 pm

2 stops17h 38m

$893

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Mon 7/27

1:13 pm-12:30 am

2 stops27h 17m

Cluj Napoca

Mon 9/28

3:35 pm-1:25 pm

2 stops29h 50m

$912

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Mon 7/27

7:05 pm-5:25 pm

2 stops14h 20m

Cluj Napoca

Mon 9/28

3:35 pm-1:25 pm

2 stops29h 50m

$913

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	15h 30m
Direct flights	None

The fastest flight from St. Louis to Romania takes 15h 30m

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 May 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 9,694 reviews		Search United Airlines flights
Lufthansa	PriceFrom $800	Free Cancellation	Rating 6.8 7,985 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.