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

British Airways and Lufthansa 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 August 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.

$392 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.

7:04 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

22h 01m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 9:13 pmCLJ Cluj Napoca-STL Lambert-St Louis

23h 03m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$762Lufthansa

Sun, Jan 10 - Thu, Jan 14

7:04 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

22h 01m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

10:45 am - 3:26 pmCLJ Cluj Napoca-STL Lambert-St Louis

36h 41m2 stops Zurich Toronto Pearson Intl

$769Multiple Airlines

Mon, Jan 11 - Thu, Jan 14

7:04 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

22h 01m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

10:45 am - 3:26 pmCLJ Cluj Napoca-STL Lambert-St Louis

36h 41m2 stops Zurich Toronto Pearson Intl

$769Multiple Airlines

Sun, Jan 10 - Thu, Jan 14

1:08 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

27h 57m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 3:26 pmCLJ Cluj Napoca-STL Lambert-St Louis

41h 16m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$771Multiple Airlines

Sun, Jan 10 - Fri, Jan 15

6:00 am - 1:50 pmSTL Lambert-St Louis-CLJ Cluj Napoca

23h 50m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 3:26 pmCLJ Cluj Napoca-STL Lambert-St Louis

41h 16m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$778United Airlines

Sun, Jan 10 - Tue, Jan 12

9:13 am - 1:50 pmSTL Lambert-St Louis-CLJ Cluj Napoca

20h 37m2 stops Denver Intl Munich Franz Josef Strauss

6:10 am - 4:40 pmCLJ Cluj Napoca-STL Lambert-St Louis

18h 30m2 stops Munich Franz Josef Strauss Newark

$780United Airlines

Mon, Feb 1 - Thu, Feb 4

1:08 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

27h 57m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 9:13 pmCLJ Cluj Napoca-STL Lambert-St Louis

23h 03m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$785Lufthansa

Sun, Jan 10 - Wed, Jan 13

1:08 pm - 1:05 amSTL Lambert-St Louis-CLJ Cluj Napoca

27h 57m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 11:09 pmCLJ Cluj Napoca-STL Lambert-St Louis

24h 59m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$785Lufthansa

Tue, Jan 12 - Fri, Jan 15

6:00 am - 1:50 pmSTL Lambert-St Louis-CLJ Cluj Napoca

23h 50m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:10 am - 6:38 pmCLJ Cluj Napoca-STL Lambert-St Louis

20h 28m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

$785United Airlines

Mon, Feb 1 - Thu, Feb 4

1:29 pm - 12:00 pmSTL Lambert-St Louis-OTP Bucharest Otopeni Intl

14h 31m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:00 am - 1:45 pmOTP Bucharest Otopeni Intl-STL Lambert-St Louis

15h 45m1 stop Frankfurt am Main

$813Lufthansa

Wed, Oct 7 - Wed, Nov 4

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Air Canada flights from St. Louis to Romania

Our best Air Canada deals on St. Louis to Romania flight tickets

Air Canada

Feb 1

STL4:05 pmLambert-St Louis

15h 45m

2 stops

OTP3:50 pmBucharest Otopeni Intl

Feb 4

OTP6:30 amBucharest Otopeni Intl

40h 56m

2 stops

STL3:26 pmLambert-St Louis

$789

Air Canada

Feb 1

STL4:05 pmLambert-St Louis

15h 45m

2 stops

OTP3:50 pmBucharest Otopeni Intl

Feb 4

OTP6:30 amBucharest Otopeni Intl

40h 56m

2 stops

STL3:26 pmLambert-St Louis

$794

Air Canada

Jan 10

STL11:25 amLambert-St Louis

18h 25m

3 stops

CLJ1:50 pmCluj Napoca

Jan 14

CLJ6:10 amCluj Napoca

24h 59m

3 stops

STL11:09 pmLambert-St Louis

$796

Delta flights from St. Louis to Romania

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

Delta

Oct 7

STL10:00 amLambert-St Louis

18h 45m

2 stops

OTP12:45 pmBucharest Otopeni Intl

Nov 6

OTP6:00 amBucharest Otopeni Intl

25h 21m

2 stops

STL11:21 pmLambert-St Louis

$816

Delta

Oct 4

STL5:59 pmLambert-St Louis

21h 26m

2 stops

OTP11:25 pmBucharest Otopeni Intl

Nov 3

OTP6:00 amBucharest Otopeni Intl

22h 14m

2 stops

STL8:14 pmLambert-St Louis

$894

Delta

Oct 1

STL10:29 amLambert-St Louis

18h 31m

2 stops

OTP1:00 pmBucharest Otopeni Intl

Nov 4

OTP6:00 amBucharest Otopeni Intl

17h 37m

2 stops

STL3:37 pmLambert-St Louis

$959

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Sun 1/10

7:04 pm-1:05 am

2 stops22h 01m

Cluj Napoca

Thu 1/14

6:10 am-9:13 pm

2 stops23h 03m

$762

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Mon 1/11

7:04 pm-1:05 am

2 stops22h 01m

Cluj Napoca

Thu 1/14

10:45 am-3:26 pm

2 stops36h 41m

$769

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Sun 1/10

7:04 pm-1:05 am

2 stops22h 01m

Cluj Napoca

Thu 1/14

10:45 am-3:26 pm

2 stops36h 41m

$769

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Sun 1/10

1:08 pm-1:05 am

2 stops27h 57m

Cluj Napoca

Fri 1/15

6:10 am-3:26 pm

2 stops41h 16m

$771

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Sun 1/10

6:00 am-1:50 pm

2 stops23h 50m

Cluj Napoca

Tue 1/12

6:10 am-3:26 pm

2 stops41h 16m

$778

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Mon 2/1

9:13 am-1:50 pm

2 stops20h 37m

Cluj Napoca

Thu 2/4

6:10 am-4:40 pm

2 stops18h 30m

$780

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Sun 1/10

1:08 pm-1:05 am

2 stops27h 57m

Cluj Napoca

Wed 1/13

6:10 am-9:13 pm

2 stops23h 03m

$785

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Tue 1/12

1:08 pm-1:05 am

2 stops27h 57m

Cluj Napoca

Fri 1/15

6:10 am-11:09 pm

2 stops24h 59m

$785

St. LouisCluj Napoca

STL Lambert-St Louis - CLJ Cluj Napoca

STLCLJ

Lambert-St Louis

Mon 2/1

6:00 am-1:50 pm

2 stops23h 50m

Cluj Napoca

Thu 2/4

6:10 am-6:38 pm

2 stops20h 28m

$785

Quickest round-trip

St. LouisBucharest

STL Lambert-St Louis - OTP Bucharest Otopeni Intl

STLOTP

Lambert-St Louis

Wed 10/7

1:29 pm-12:00 pm

2 stops14h 31m

Bucharest Otopeni Intl

Wed 11/4

6:00 am-1:45 pm

1 stop15h 45m

$813

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 55% 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

Best Price Found	$392
Fastest flight time	14h 31m
Direct flights	None

The best one-way flight to Romania from St. Louis in the past 72 hours is $392. The best round-trip flight deal from St. Louis to Romania found on momondo in the last 72 hours is $762.

The fastest flight from St. Louis to Romania takes 14h 31m

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 August 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 10,104 reviews		Search United Airlines flights
Lufthansa	PriceFrom $907	Free Cancellation	Rating 6.8 8,202 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.