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St. Louis

$507+ Cheap flights from Otopeni Intl (OTP) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — STL
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
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Cheap flight deals from Otopeni Intl to St. Louis

Cheapest flights from Otopeni Intl to St. Louis
Explore the most affordable flight options available from Otopeni Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.

This KLM deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:35 am
OTP
-
STL
2 stops19h 21m
KLM
Wed 3/411:23 am
STL
-
OTP
2 stops20h 02m
KLM
Deal found 2/13$782
This Delta deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:00 am
OTP
-
STL
2 stops22h 43m
Delta
Wed 2/187:10 am
STL
-
OTP
2 stops20h 55m
Delta
Deal found 2/13$924
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/126:00 am
OTP
-
STL
2 stops18h 45m
Delta
Mon 2/1611:55 am
STL
-
OTP
2 stops16h 10m
Delta
Deal found 2/10$925
This Lufthansa deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/285:55 am
OTP
-
STL
2 stops19h 49m
Lufthansa
Wed 3/43:50 pm
STL
-
OTP
1 stop14h 10m
Lufthansa
Deal found 2/13$1,001
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:50 am
OTP
-
STL
2 stops25h 09m
United Airlines
Mon 2/239:55 am
STL
-
OTP
2 stops20h 10m
United Airlines
Deal found 2/10$1,006
This Air Canada deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:55 am
OTP
-
STL
3 stops22h 10m
Air Canada
Wed 3/49:55 am
STL
-
OTP
3 stops20h 05m
Air Canada
Deal found 2/13$1,114

Find flight deals from Otopeni Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 14, 2026.

Round-trip from

$782
(KLM)

One-way from

$507
(Kiwi.com)
From Bucharest Otopeni Intl to Lambert-St Louis
Search Deals
One-way flight from Bucharest Otopeni Intl to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl 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, Cheapflights users made 2,558,603 searches. Data last updated February 14, 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

Otopeni Intl

Fly to

St. Louis

Route

Depart

Return

Price

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

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

5:55 am-3:29 pm

2 stops41h 34m

Lambert-St Louis

Wed 3/4

9:55 am-2:00 pm

3 stops20h 05m

$1,012

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

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 4/4

8:35 pm-11:27 am

3 stops46h 52m

$507

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 4/4

1:55 pm-1:25 pm

1 stop31h 30m

$910

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Best time to book a flight from Otopeni Intl to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Otopeni Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Bucharest Otopeni Intl?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Bucharest Otopeni Intl to St. Louis. 0 airlines have flights to Lambert-St Louis from Bucharest Otopeni Intl on a regular basis. Booking flights from Bucharest Otopeni Intl to Lambert-St Louis should not be difficult; the airport handles an average of 0 inbound flights from Bucharest Otopeni Intl per day.

  • How long is the flight from Bucharest Otopeni Intl Airport to St. Louis?

    Airlines like KLM, Lufthansa, and Air Canada fly from Bucharest Otopeni Intl Airport to St. Louis in about 19h 21m. The time it takes to get you to your destination can typically vary by up to 2h 49m. The distance between Bucharest Otopeni Intl Airport and St. Louis is about 5451 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Otopeni Intl to St. Louis that include hotel bookings?

    Yes. In addition to deals on Otopeni Intl to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Otopeni Intl to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Otopeni Intl to St. Louis.

  • Can I find deals for business class flights from Otopeni Intl to St. Louis?

    Yes. Cheapflights offers flight deals from Otopeni Intl to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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Farmington
Festus

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