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Cheap flights from Bucharest Otopeni Intl Airport to St. Louis from $568

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Bucharest Otopeni Intl Airport 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 Bucharest Otopeni Intl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:05 am - 11:53 pm
OTP
-
STL
24h 48m
2 stops
Delta Logo
7:08 am - 1:00 pm
STL
-
OTP
21h 52m
2 stops
$1,029Delta
Wed, Jul 15 - Sun, Jul 19
British Airways Logo
3:40 pm - 9:43 pm
OTP
-
STL
38h 03m
2 stops
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
$1,080British Airways
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
3:40 pm - 8:44 pm
OTP
-
STL
37h 04m
2 stops
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
$1,081British Airways
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
8:15 am - 8:44 pm
OTP
-
STL
20h 29m
2 stops
British Airways Logo
9:40 pm - 12:50 am
STL
-
OTP
19h 10m
1 stop
$1,083British Airways
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
3:40 pm - 9:43 pm
OTP
-
STL
38h 03m
2 stops
British Airways Logo
1:49 pm - 12:50 am
STL
-
OTP
27h 01m
2 stops
$1,084British Airways
Thu, Sep 10 - Sun, Sep 13
United Airlines Logo
6:05 am - 1:25 pm
OTP
-
STL
15h 20m
1 stop
United Airlines Logo
3:22 pm - 4:30 pm
STL
-
OTP
17h 08m
2 stops
$1,085United Airlines
Wed, Jul 15 - Sun, Jul 19
British Airways Logo
8:15 am - 9:43 pm
OTP
-
STL
21h 28m
2 stops
British Airways Logo
5:18 pm - 12:50 am
STL
-
OTP
23h 32m
2 stops
$1,086British Airways
Thu, Sep 10 - Sun, Sep 13
Air Canada Logo
6:05 am - 6:41 pm
OTP
-
STL
20h 36m
2 stops
Air Canada Logo
12:10 pm - 6:35 pm
STL
-
OTP
22h 25m
2 stops
$1,087Air Canada
Thu, Sep 10 - Sun, Sep 13
British Airways Logo
8:15 am - 9:43 pm
OTP
-
STL
21h 28m
2 stops
British Airways Logo
5:18 pm - 12:50 am
STL
-
OTP
23h 32m
2 stops
$1,088British Airways
Thu, Sep 10 - Sun, Sep 13
Multiple Airlines Logo
9:55 am - 8:22 pm
OTP
-
STL
18h 27m
2 stops
Multiple Airlines Logo
12:10 pm - 12:35 am
STL
-
OTP
28h 25m
3 stops
$1,421Multiple Airlines
Wed, Jul 15 - Sun, Jul 19

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British Airways flights from Bucharest Otopeni Intl Airport to St. Louis

Our best British Airways deals on Bucharest Otopeni Intl Airport to St. Louis flight tickets
British Airways
Sep 10
OTP3:40 pmBucharest Otopeni Intl
38h 03m
2 stops
STL9:43 pmLambert-St Louis
Sep 13
STL9:40 pmLambert-St Louis
19h 10m
1 stop
OTP12:50 amBucharest Otopeni Intl
$1,080
British Airways
Sep 10
OTP3:40 pmBucharest Otopeni Intl
37h 04m
2 stops
STL8:44 pmLambert-St Louis
Sep 13
STL9:40 pmLambert-St Louis
19h 10m
1 stop
OTP12:50 amBucharest Otopeni Intl
$1,081
British Airways
Sep 10
OTP8:15 amBucharest Otopeni Intl
20h 29m
2 stops
STL8:44 pmLambert-St Louis
Sep 13
STL9:40 pmLambert-St Louis
19h 10m
1 stop
OTP12:50 amBucharest Otopeni Intl
$1,083

momondo Fare Finder

 
Customize your flight search to find flights from Bucharest Otopeni Intl Airport 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 July 2, 2026.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport 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

Wed 7/15

7:05 am-11:53 pm

2 stops24h 48m

Lambert-St Louis

Sun 7/19

7:08 am-1:00 pm

2 stops21h 52m

$1,029

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

3:40 pm-9:43 pm

2 stops38h 03m

Lambert-St Louis

Sun 9/13

9:40 pm-12:50 am

1 stop19h 10m

$1,080

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

3:40 pm-8:44 pm

2 stops37h 04m

Lambert-St Louis

Sun 9/13

9:40 pm-12:50 am

1 stop19h 10m

$1,081

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

8:15 am-8:44 pm

2 stops20h 29m

Lambert-St Louis

Sun 9/13

9:40 pm-12:50 am

1 stop19h 10m

$1,083

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

3:40 pm-9:43 pm

2 stops38h 03m

Lambert-St Louis

Sun 9/13

1:49 pm-12:50 am

2 stops27h 01m

$1,084
Quickest round-trip

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 7/15

6:05 am-1:25 pm

1 stop15h 20m

Lambert-St Louis

Sun 7/19

3:22 pm-4:30 pm

2 stops17h 08m

$1,085

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

8:15 am-9:43 pm

2 stops21h 28m

Lambert-St Louis

Sun 9/13

5:18 pm-12:50 am

2 stops23h 32m

$1,086

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

6:05 am-6:41 pm

2 stops20h 36m

Lambert-St Louis

Sun 9/13

12:10 pm-6:35 pm

2 stops22h 25m

$1,087

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/10

8:15 am-9:43 pm

2 stops21h 28m

Lambert-St Louis

Sun 9/13

5:18 pm-12:50 am

2 stops23h 32m

$1,088

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 7/15

9:55 am-8:22 pm

2 stops18h 27m

Lambert-St Louis

Sun 7/19

12:10 pm-12:35 am

3 stops28h 25m

$1,421

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Bucharest Otopeni Intl Airport 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 Bucharest Otopeni Intl to Lambert-St Louis?

British Airways and Lufthansa are the most popular carriers operating from Bucharest Otopeni Intl to Lambert-St Louis

When to book flights from Bucharest Otopeni Intl Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Bucharest Otopeni Intl Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Bucharest Otopeni Intl Airport to St. Louis (OTP to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Bucharest Otopeni Intl Airport to St. Louis

Fastest flight time

20h 29m

Direct flights

None
The fastest flight from Bucharest Otopeni Intl Airport to St. Louis takes 20h 29m
There are no direct flights from Bucharest Otopeni Intl Airport to St. Louis. There are no popular flight routes from Bucharest Otopeni Intl Airport to St. Louis.
Search flight deals

Frequently asked questions about flying from Bucharest Otopeni Intl Airport to St. Louis

  • How far is Bucharest Otopeni Intl to Lambert-St Louis by plane?

    Lambert-St Louis is 5451.7 mi away from Bucharest Otopeni Intl. A reasonable flight in good conditions will take 20h 29m.

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

    Prices for flights from Bucharest Otopeni Intl Airport to Lambert-St Louis Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Bucharest Otopeni Intl Airport to Lambert-St Louis Airport.

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

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek 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
Fenton
Farmington
Wentzville
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Bucharest to St. Louis. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Bucharest with this policy.

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

momondo helps you find the best flight between Bucharest and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Bucharest and alert you when they change.

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