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Cheap flights from Romania to St. Louis from $507

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Romania to St. Louis departing on 4/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Romania to St. Louis

Recent round-trip flight deals from Romania to St. Louis

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 1:19 pm
CLJ
-
STL
39h 19m
2 stops
United Airlines Logo
1:30 pm - 5:25 pm
STL
-
CLJ
19h 55m
2 stops
$759United Airlines
Fri, Mar 6 - Tue, Sep 22
Multiple Airlines Logo
6:00 am - 10:59 pm
CLJ
-
STL
23h 59m
3 stops
Multiple Airlines Logo
12:10 pm - 12:30 am
STL
-
CLJ
28h 20m
2 stops
$771Multiple Airlines
Mon, Mar 9 - Mon, Sep 21
Multiple Airlines Logo
6:00 am - 10:59 pm
CLJ
-
STL
23h 59m
3 stops
Multiple Airlines Logo
2:40 pm - 2:50 pm
STL
-
CLJ
40h 10m
2 stops
$772Multiple Airlines
Tue, Mar 10 - Sat, Oct 3
KLM Logo
8:35 am - 7:56 pm
OTP
-
STL
19h 21m
2 stops
KLM Logo
11:23 am - 3:25 pm
STL
-
OTP
20h 02m
2 stops
$782KLM
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
6:00 am - 9:56 pm
CLJ
-
STL
23h 56m
2 stops
United Airlines Logo
9:23 am - 5:25 pm
STL
-
CLJ
24h 02m
2 stops
$788United Airlines
Sat, Mar 7 - Sat, Oct 3
United Airlines Logo
2:25 pm - 11:51 pm
CLJ
-
STL
17h 26m
2 stops
United Airlines Logo
1:30 pm - 5:25 pm
STL
-
CLJ
19h 55m
2 stops
$789United Airlines
Fri, Mar 6 - Wed, Sep 23
Lufthansa Logo
5:55 am - 5:44 pm
OTP
-
STL
19h 49m
2 stops
Lufthansa Logo
3:50 pm - 2:00 pm
STL
-
OTP
14h 10m
1 stop
$1,001Lufthansa
Sat, Feb 28 - Wed, Mar 4
Lufthansa Logo
2:50 pm - 1:55 pm
OTP
-
STL
31h 05m
1 stop
Lufthansa Logo
3:50 pm - 2:00 pm
STL
-
OTP
14h 10m
1 stop
$1,016Lufthansa
Sat, Feb 28 - Wed, Mar 4
Air Canada Logo
6:00 am - 9:07 pm
CLJ
-
STL
22h 07m
3 stops
Air Canada Logo
10:23 am - 1:10 pm
STL
-
CLJ
18h 47m
3 stops
$1,086Air Canada
Tue, Mar 10 - Sat, Oct 3
Air Canada Logo
6:55 am - 9:05 pm
OTP
-
STL
22h 10m
3 stops
Air Canada Logo
9:55 am - 2:00 pm
STL
-
OTP
20h 05m
3 stops
$1,114Air Canada
Sat, Feb 28 - Wed, Mar 4

Air Canada flights from Romania to St. Louis

Our best Air Canada deals on Romania to St. Louis flight tickets
Air Canada
Mar 10
CLJ6:00 amCluj Napoca
22h 07m
3 stops
STL9:07 pmLambert-St Louis
Oct 3
STL10:23 amLambert-St Louis
18h 47m
3 stops
CLJ1:10 pmCluj Napoca
$1,086
Air Canada
Feb 28
OTP6:55 amBucharest Otopeni Intl
22h 10m
3 stops
STL9:05 pmLambert-St Louis
Mar 4
STL9:55 amLambert-St Louis
20h 05m
3 stops
OTP2:00 pmBucharest Otopeni Intl
$1,114
Air Canada
Mar 9
CLJ6:00 amCluj Napoca
23h 59m
3 stops
STL10:59 pmLambert-St Louis
Sep 21
STL10:23 amLambert-St Louis
18h 47m
3 stops
CLJ1:10 pmCluj Napoca
$1,347

United Airlines flights from Romania to St. Louis

Our best United Airlines deals on Romania to St. Louis flight tickets
United Airlines
Mar 6
CLJ6:00 amCluj Napoca
39h 19m
2 stops
STL1:19 pmLambert-St Louis
Sep 20
STL8:15 pmLambert-St Louis
37h 10m
2 stops
CLJ5:25 pmCluj Napoca
$759
United Airlines
Mar 7
CLJ6:00 amCluj Napoca
23h 56m
2 stops
STL9:56 pmLambert-St Louis
Oct 3
STL9:23 amLambert-St Louis
24h 02m
2 stops
CLJ5:25 pmCluj Napoca
$788
United Airlines
Mar 6
CLJ2:25 pmCluj Napoca
17h 26m
2 stops
STL11:51 pmLambert-St Louis
Sep 23
STL1:30 pmLambert-St Louis
19h 55m
2 stops
CLJ5:25 pmCluj Napoca
$789

momondo Fare Finder

 
Customize your flight search to find flights from Romania to St. Louis 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 14, 2026.
Use the filters below to find and compare flights from Romania to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Fri 3/6

6:00 am-1:19 pm

2 stops39h 19m

Lambert-St Louis

Tue 9/22

1:30 pm-5:25 pm

2 stops19h 55m

$759

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Mon 3/9

6:00 am-10:59 pm

3 stops23h 59m

Lambert-St Louis

Mon 9/21

12:10 pm-12:30 am

2 stops28h 20m

$771

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Tue 3/10

6:00 am-10:59 pm

3 stops23h 59m

Lambert-St Louis

Sat 10/3

2:40 pm-2:50 pm

2 stops40h 10m

$772

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 2/28

8:35 am-7:56 pm

2 stops19h 21m

Lambert-St Louis

Wed 3/4

11:23 am-3:25 pm

2 stops20h 02m

$782

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Sat 3/7

6:00 am-9:56 pm

2 stops23h 56m

Lambert-St Louis

Sat 10/3

9:23 am-5:25 pm

2 stops24h 02m

$788

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Fri 3/6

2:25 pm-11:51 pm

2 stops17h 26m

Lambert-St Louis

Wed 9/23

1:30 pm-5:25 pm

2 stops19h 55m

$789

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 2/28

5:55 am-5:44 pm

2 stops19h 49m

Lambert-St Louis

Wed 3/4

3:50 pm-2:00 pm

1 stop14h 10m

$1,001

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 2/28

2:50 pm-1:55 pm

1 stop31h 05m

Lambert-St Louis

Wed 3/4

3:50 pm-2:00 pm

1 stop14h 10m

$1,016

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Tue 3/10

6:00 am-9:07 pm

3 stops22h 07m

Lambert-St Louis

Sat 10/3

10:23 am-1:10 pm

3 stops18h 47m

$1,086

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 2/28

6:55 am-9:05 pm

3 stops22h 10m

Lambert-St Louis

Wed 3/4

9:55 am-2:00 pm

3 stops20h 05m

$1,114

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

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

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

Cheap Romania to St. Louis flight deals and tips

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

Fastest flight time

19h 21m

Direct flights

None
The fastest flight from Romania to St. Louis takes 19h 21m
There are no direct flights from Romania to St. Louis. There are no popular flight routes from Romania to St. Louis.
Search flight deals

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

    Prices for flights from Romania to Lambert-St Louis Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Romania to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport 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.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

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

It is quick and easy to find Romania to St. Louis 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 St. Louis that suits you.

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

Yes. All flights to St. Louis from Romania on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Romania. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Romania to St. Louis 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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