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Cheap flights from Bucharest to St. Louis from $480

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 to St. Louis departing on 2/23. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 11:36 pm
OTP
-
STL
25h 36m
2 stops
Delta Logo
11:55 am - 12:05 pm
STL
-
OTP
16h 10m
2 stops
$774Delta
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
5:50 am - 3:29 pm
OTP
-
STL
41h 39m
2 stops
United Airlines Logo
6:25 am - 2:05 pm
STL
-
OTP
23h 40m
2 stops
$1,004United Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
5:50 am - 10:14 pm
OTP
-
STL
24h 24m
3 stops
United Airlines Logo
8:17 am - 2:05 pm
STL
-
OTP
21h 48m
2 stops
$1,006United Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
5:55 am - 3:29 pm
OTP
-
STL
41h 34m
2 stops
Multiple Airlines Logo
9:55 am - 1:55 pm
STL
-
OTP
20h 00m
3 stops
$1,008Multiple Airlines
Fri, Feb 20 - Tue, Feb 24
Air Canada Logo
5:55 am - 5:45 pm
OTP
-
STL
19h 50m
3 stops
Air Canada Logo
9:55 am - 1:55 pm
STL
-
OTP
20h 00m
3 stops
$1,338Air Canada
Fri, Feb 20 - Tue, Feb 24

United Airlines flights from Bucharest to St. Louis

Our best United Airlines deals on Bucharest to St. Louis flight tickets
United Airlines
Feb 19
OTP5:50 amBucharest Otopeni Intl
41h 39m
2 stops
STL3:29 pmLambert-St Louis
Feb 23
STL6:25 amLambert-St Louis
23h 40m
2 stops
OTP2:05 pmBucharest Otopeni Intl
$1,004
United Airlines
Feb 19
OTP5:50 amBucharest Otopeni Intl
23h 50m
2 stops
STL9:40 pmLambert-St Louis
Feb 23
STL9:55 amLambert-St Louis
20h 10m
2 stops
OTP2:05 pmBucharest Otopeni Intl
$1,006

momondo Fare Finder

 
Customize your flight search to find flights from Bucharest 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 7, 2026.
Use the filters below to find and compare flights from Bucharest to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 2/20

6:00 am-11:36 pm

2 stops25h 36m

Lambert-St Louis

Tue 2/24

11:55 am-12:05 pm

2 stops16h 10m

$774

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 2/19

5:50 am-3:29 pm

2 stops41h 39m

Lambert-St Louis

Mon 2/23

6:25 am-2:05 pm

2 stops23h 40m

$1,004

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 2/19

5:50 am-10:14 pm

3 stops24h 24m

Lambert-St Louis

Mon 2/23

8:17 am-2:05 pm

2 stops21h 48m

$1,006

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 2/20

5:55 am-3:29 pm

2 stops41h 34m

Lambert-St Louis

Tue 2/24

9:55 am-1:55 pm

3 stops20h 00m

$1,008

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 2/20

5:55 am-5:45 pm

3 stops19h 50m

Lambert-St Louis

Tue 2/24

9:55 am-1:55 pm

3 stops20h 00m

$1,338

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 2/23

5:55 am-6:51 am

3 stops56h 56m

$480

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 2/23

5:55 am-11:59 pm

2 stops26h 04m

$556

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 2/22

12:35 pm-11:59 pm

3 stops43h 24m

$585

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 2/22

11:45 am-11:59 pm

2 stops44h 14m

$628

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Bucharest to St. Louis

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

Cheap Bucharest to St. Louis (BUH to STL) flight deals and tips

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

Fastest flight time

41h 39m

Direct flights

None
The fastest flight from Bucharest to St. Louis takes 41h 39m
There are no direct flights from Bucharest to St. Louis. There are no popular flight routes from Bucharest to St. Louis.
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  • How far is Bucharest to Lambert-St Louis by plane?

    Lambert-St Louis is 5458.3 mi away from Bucharest. Typically, this will take 41h 39m by plane in normal conditions.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bucharest to Lambert-St Louis Airport.

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

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

    Search flight deals from Bucharest to St. Louis. While viewing offers you’ll have the option to create a Price Alert.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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 Bucharest to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Bucharest to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Bucharest to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Bucharest to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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