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Cheap flights from Romania to St. Louis from $615

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 8/26. 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
1 adult, Economy, 0 bags

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.
KLM Logo
2:00 pm - 11:56 pm
OTP
-
STL
17h 56m
2 stops
KLM Logo
2:10 pm - 1:00 pm
STL
-
OTP
14h 50m
2 stops
$900KLM
Mon, Jun 22 - Fri, Aug 28
United Airlines Logo
6:15 am - 11:58 pm
OTP
-
STL
25h 43m
2 stops
United Airlines Logo
7:00 am - 12:00 pm
STL
-
OTP
21h 00m
2 stops
$901United Airlines
Wed, Jun 24 - Thu, Aug 27
United Airlines Logo
6:15 am - 5:28 pm
OTP
-
STL
19h 13m
2 stops
United Airlines Logo
3:30 pm - 1:00 pm
STL
-
OTP
13h 30m
1 stop
$902United Airlines
Wed, Jun 24 - Tue, Sep 1
Air Canada Logo
6:20 am - 12:21 pm
OTP
-
STL
38h 01m
2 stops
Air Canada Logo
12:10 pm - 4:20 pm
STL
-
OTP
20h 10m
2 stops
$904Air Canada
Tue, Jun 23 - Tue, Sep 1
Delta Logo
2:00 pm - 11:56 pm
OTP
-
STL
17h 56m
2 stops
Delta Logo
10:33 am - 1:40 pm
STL
-
OTP
19h 07m
2 stops
$908Delta
Mon, Jun 22 - Sat, Aug 29
Air Canada Logo
6:20 am - 12:21 pm
OTP
-
STL
38h 01m
2 stops
Air Canada Logo
8:55 am - 1:00 pm
STL
-
OTP
20h 05m
2 stops
$909Air Canada
Tue, Jun 23 - Thu, Aug 27
Delta Logo
2:00 pm - 8:16 am
OTP
-
STL
26h 16m
2 stops
Delta Logo
2:10 pm - 1:00 pm
STL
-
OTP
14h 50m
2 stops
$913Delta
Mon, Jun 22 - Fri, Aug 28
Multiple Airlines Logo
6:00 am - 8:07 pm
CLJ
-
STL
22h 07m
3 stops
Multiple Airlines Logo
1:20 pm - 5:25 pm
STL
-
CLJ
20h 05m
2 stops
$1,124Multiple Airlines
Thu, Jun 25 - Mon, Jun 29
Lufthansa Logo
6:00 am - 1:25 pm
CLJ
-
STL
15h 25m
2 stops
Lufthansa Logo
8:43 am - 12:30 am
STL
-
CLJ
31h 47m
2 stops
$1,288Lufthansa
Fri, Jun 26 - Tue, Jun 30
Multiple Airlines Logo
6:00 am - 8:07 pm
CLJ
-
STL
22h 07m
3 stops
Multiple Airlines Logo
1:20 pm - 10:00 am
STL
-
CLJ
36h 40m
2 stops
$1,450Multiple Airlines
Fri, Jun 26 - Tue, Jun 30

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Air Canada flights from Romania to St. Louis

Our best Air Canada deals on Romania to St. Louis flight tickets
Air Canada
Jun 23
OTP6:20 amBucharest Otopeni Intl
38h 01m
2 stops
STL12:21 pmLambert-St Louis
Sep 1
STL12:10 pmLambert-St Louis
20h 10m
2 stops
OTP4:20 pmBucharest Otopeni Intl
$904
Air Canada
Jun 23
OTP6:20 amBucharest Otopeni Intl
38h 01m
2 stops
STL12:21 pmLambert-St Louis
Aug 27
STL8:55 amLambert-St Louis
20h 05m
2 stops
OTP1:00 pmBucharest Otopeni Intl
$909
Air Canada
Jun 22
OTP6:05 amBucharest Otopeni Intl
22h 20m
2 stops
STL8:25 pmLambert-St Louis
Aug 26
STL12:10 pmLambert-St Louis
16h 40m
2 stops
OTP12:50 pmBucharest Otopeni Intl
$929

KLM flights from Romania to St. Louis

Our best KLM deals on Romania to St. Louis flight tickets
KLM
Jun 22
OTP2:00 pmBucharest Otopeni Intl
17h 56m
2 stops
STL11:56 pmLambert-St Louis
Aug 28
STL2:10 pmLambert-St Louis
14h 50m
2 stops
OTP1:00 pmBucharest Otopeni Intl
$900
KLM
Jun 16
OTP7:05 amBucharest Otopeni Intl
18h 18m
2 stops
STL5:23 pmLambert-St Louis
Aug 28
STL2:10 pmLambert-St Louis
17h 15m
2 stops
OTP3:25 pmBucharest Otopeni Intl
$966
KLM
Jun 17
OTP2:00 pmBucharest Otopeni Intl
18h 43m
2 stops
STL12:43 amLambert-St Louis
Aug 29
STL1:04 pmLambert-St Louis
18h 21m
2 stops
OTP3:25 pmBucharest Otopeni Intl
$967

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 June 13, 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

Cheapest round-trip

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 6/22

2:00 pm-11:56 pm

2 stops17h 56m

Lambert-St Louis

Fri 8/28

2:10 pm-1:00 pm

2 stops14h 50m

$900

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 6/24

6:15 am-11:58 pm

2 stops25h 43m

Lambert-St Louis

Thu 8/27

7:00 am-12:00 pm

2 stops21h 00m

$901
Quickest round-trip

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 6/24

6:15 am-5:28 pm

2 stops19h 13m

Lambert-St Louis

Tue 9/1

3:30 pm-1:00 pm

1 stop13h 30m

$902

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Tue 6/23

6:20 am-12:21 pm

2 stops38h 01m

Lambert-St Louis

Tue 9/1

12:10 pm-4:20 pm

2 stops20h 10m

$904

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 6/22

2:00 pm-11:56 pm

2 stops17h 56m

Lambert-St Louis

Sat 8/29

10:33 am-1:40 pm

2 stops19h 07m

$908

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Tue 6/23

6:20 am-12:21 pm

2 stops38h 01m

Lambert-St Louis

Thu 8/27

8:55 am-1:00 pm

2 stops20h 05m

$909

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 6/22

2:00 pm-8:16 am

2 stops26h 16m

Lambert-St Louis

Fri 8/28

2:10 pm-1:00 pm

2 stops14h 50m

$913

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Thu 6/25

6:00 am-8:07 pm

3 stops22h 07m

Lambert-St Louis

Mon 6/29

1:20 pm-5:25 pm

2 stops20h 05m

$1,124

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Fri 6/26

6:00 am-1:25 pm

2 stops15h 25m

Lambert-St Louis

Tue 6/30

8:43 am-12:30 am

2 stops31h 47m

$1,288

Cluj NapocaSt. Louis

CLJ - STL

CLJSTL

Cluj Napoca

Fri 6/26

6:00 am-8:07 pm

3 stops22h 07m

Lambert-St Louis

Tue 6/30

1:20 pm-10:00 am

2 stops36h 40m

$1,450

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 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?

British Airways 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

21h 34m

Direct flights

None
The fastest flight from Romania to St. Louis takes 21h 34m
There are no direct flights from Romania to St. Louis. There are no popular flight routes from Romania to St. Louis.
Search flight deals

Frequently asked questions about flying from Romania to St. Louis

  • 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
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Fenton
Clayton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
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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