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Cheap flights from Bucharest Otopeni Intl Airport to St. Louis from $385

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 4/28. 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

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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
2:00 pm - 11:36 pm
OTP
-
STL
17h 36m
2 stops
Delta Logo
6:20 am - 1:00 pm
STL
-
OTP
22h 40m
2 stops
$841Delta
Wed, Apr 15 - Sun, Apr 19
Air Canada Logo
6:20 am - 8:25 pm
OTP
-
STL
22h 05m
2 stops
Air Canada Logo
7:05 am - 1:00 pm
STL
-
OTP
21h 55m
2 stops
$1,002Air Canada
Thu, May 14 - Thu, May 21
Lufthansa Logo
1:45 pm - 11:11 pm
OTP
-
STL
17h 26m
2 stops
Lufthansa Logo
3:30 pm - 11:40 pm
STL
-
OTP
24h 10m
1 stop
$1,183Lufthansa
Wed, Apr 15 - Sun, Apr 19
Lufthansa Logo
6:05 am - 1:25 pm
OTP
-
STL
15h 20m
1 stop
Lufthansa Logo
3:30 pm - 11:40 pm
STL
-
OTP
24h 10m
1 stop
$1,304Lufthansa
Wed, Apr 15 - Sun, Apr 19
British Airways Logo
3:40 pm - 7:30 pm
OTP
-
STL
35h 50m
1 stop
British Airways Logo
7:51 pm - 7:05 pm
STL
-
OTP
39h 14m
2 stops
$1,305British Airways
Thu, May 14 - Thu, May 21
Multiple Airlines Logo
6:05 am - 3:25 pm
OTP
-
STL
17h 20m
2 stops
Multiple Airlines Logo
3:30 pm - 10:10 pm
STL
-
OTP
22h 40m
3 stops
$1,437Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
Multiple Airlines Logo
12:45 pm - 8:25 pm
OTP
-
STL
39h 40m
2 stops
Multiple Airlines Logo
7:05 am - 7:05 pm
STL
-
OTP
28h 00m
3 stops
$1,646Multiple Airlines
Thu, May 14 - Thu, May 21
Air Canada Logo
6:05 am - 6:11 pm
OTP
-
STL
20h 06m
3 stops
Air Canada Logo
11:15 am - 12:00 pm
STL
-
OTP
16h 45m
3 stops
$4,536Air Canada
Wed, Apr 15 - Sun, Apr 19

Air Canada flights from Bucharest Otopeni Intl Airport to St. Louis

Our best Air Canada deals on Bucharest Otopeni Intl Airport to St. Louis flight tickets
Air Canada
May 14
OTP6:20 amBucharest Otopeni Intl
22h 05m
2 stops
STL8:25 pmLambert-St Louis
May 21
STL7:05 amLambert-St Louis
21h 55m
2 stops
OTP1:00 pmBucharest Otopeni Intl
$1,002
Air Canada
Apr 15
OTP6:05 amBucharest Otopeni Intl
20h 06m
3 stops
STL6:11 pmLambert-St Louis
Apr 19
STL11:15 amLambert-St Louis
16h 45m
3 stops
OTP12:00 pmBucharest Otopeni Intl
$4,536

Lufthansa flights from Bucharest Otopeni Intl Airport to St. Louis

Our best Lufthansa deals on Bucharest Otopeni Intl Airport to St. Louis flight tickets
Lufthansa
Apr 15
OTP1:45 pmBucharest Otopeni Intl
17h 26m
2 stops
STL11:11 pmLambert-St Louis
Apr 19
STL3:30 pmLambert-St Louis
24h 10m
1 stop
OTP11:40 pmBucharest Otopeni Intl
$1,183
Lufthansa
Apr 15
OTP6:05 amBucharest Otopeni Intl
15h 20m
1 stop
STL1:25 pmLambert-St Louis
Apr 19
STL3:30 pmLambert-St Louis
24h 10m
1 stop
OTP11:40 pmBucharest Otopeni Intl
$1,304

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 April 1, 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 4/15

2:00 pm-11:36 pm

2 stops17h 36m

Lambert-St Louis

Sun 4/19

6:20 am-1:00 pm

2 stops22h 40m

$841

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 5/14

6:20 am-8:25 pm

2 stops22h 05m

Lambert-St Louis

Thu 5/21

7:05 am-1:00 pm

2 stops21h 55m

$1,002

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 4/15

1:45 pm-11:11 pm

2 stops17h 26m

Lambert-St Louis

Sun 4/19

3:30 pm-11:40 pm

1 stop24h 10m

$1,183

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 4/15

6:05 am-1:25 pm

1 stop15h 20m

Lambert-St Louis

Sun 4/19

3:30 pm-11:40 pm

1 stop24h 10m

$1,304

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 5/14

3:40 pm-7:30 pm

1 stop35h 50m

Lambert-St Louis

Thu 5/21

7:51 pm-7:05 pm

2 stops39h 14m

$1,305

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 4/15

6:05 am-3:25 pm

2 stops17h 20m

Lambert-St Louis

Sun 4/19

3:30 pm-10:10 pm

3 stops22h 40m

$1,437

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 5/14

12:45 pm-8:25 pm

2 stops39h 40m

Lambert-St Louis

Thu 5/21

7:05 am-7:05 pm

3 stops28h 00m

$1,646
Quickest round-trip

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 4/15

6:05 am-6:11 pm

3 stops20h 06m

Lambert-St Louis

Sun 4/19

11:15 am-12:00 pm

3 stops16h 45m

$4,536
Cheapest one-way

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Tue 4/28

10:35 pm-11:19 pm

2 stops32h 44m

$385

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Tue 4/28

10:35 pm-10:26 am

3 stops43h 51m

$391

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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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

17h 36m

Direct flights

None
The fastest flight from Bucharest Otopeni Intl Airport to St. Louis takes 17h 36m
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 17h 36m.

  • 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.

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

  • How do I get Price Alerts for flights from Bucharest Otopeni Intl Airport to St. Louis?

    Confirm your travel details to search for the latest offers for flights from Bucharest Otopeni Intl Airport to St. Louis. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Bucharest Otopeni Intl Airport to St. Louis with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Edwardsville
Litchfield
Shrewsbury
Grafton

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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