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$387+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — STL
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Otopeni Intl to St. Louis

Best flights from Otopeni Intl to St. Louis
Discover carefully curated flight deals from Otopeni Intl to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This British Airways deal was found by Cheapflights users on 12/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/228:00 amOTP - STL
2 stops21h 15mBritish Airways
Mon 1/261:35 pmSTL - OTP
2 stops17h 55mBritish Airways
Deal found 12/25$927
This United Airlines deal was found by Cheapflights users on 12/26. 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 1/155:50 amOTP - STL
2 stops21h 37mUnited Airlines
Sun 1/183:50 pmSTL - OTP
1 stop14h 15mUnited Airlines
Deal found 12/26$963
This Gotogate deal was found by Cheapflights users on 12/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/102:50 pmOTP - STL
2 stops33h 13mLufthansa
Wed 1/146:40 pmSTL - OTP
2 stops22h 25mLufthansa
Deal found 12/26$1,045
This Air Canada deal was found by Cheapflights users on 12/26. 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 1/106:55 amOTP - STL
3 stops20h 32mAir Canada
Wed 1/149:57 amSTL - OTP
3 stops18h 33mAir Canada
Deal found 12/26$2,039
This Mytrip deal was found by Cheapflights users on 12/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/104:40 pmOTP - STL
3 stops29h 15mMultiple Airlines
Wed 1/143:50 pmSTL - OTP
2 stops15h 15mMultiple Airlines
Deal found 12/26$2,083
This United Airlines deal was found by Cheapflights users on 12/26. 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.
Sat 1/102:50 pmOTP - STL
1 stop31h 05mUnited Airlines
Wed 1/143:50 pmSTL - OTP
1 stop14h 10mUnited Airlines
Deal found 12/26$1,297

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 December 28, 2025.

Round-trip from

$927
(British Airways)

One-way from

$387
(Kiwi.com)

Popular in

May

Cheapest in

March
From Bucharest Otopeni Intl to Lambert-St Louis
Search Deals
One-way flight from Bucharest Otopeni Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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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 December 28, 2025.
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

Thu 1/22

8:00 am-9:15 pm

2 stops21h 15m

Lambert-St Louis

Mon 1/26

1:35 pm-3:30 pm

2 stops17h 55m

$927

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 1/15

5:50 am-7:27 pm

2 stops21h 37m

Lambert-St Louis

Sun 1/18

3:50 pm-2:05 pm

1 stop14h 15m

$963

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 1/10

2:50 pm-4:03 pm

2 stops33h 13m

Lambert-St Louis

Wed 1/14

6:40 pm-1:05 am

2 stops22h 25m

$1,045

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 1/10

2:50 pm-1:55 pm

1 stop31h 05m

Lambert-St Louis

Wed 1/14

3:50 pm-2:00 pm

1 stop14h 10m

$1,297

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 1/10

6:55 am-7:27 pm

3 stops20h 32m

Lambert-St Louis

Wed 1/14

9:57 am-12:30 pm

3 stops18h 33m

$2,039

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 1/10

4:40 pm-1:55 pm

3 stops29h 15m

Lambert-St Louis

Wed 1/14

3:50 pm-3:05 pm

2 stops15h 15m

$2,083

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 2/4

3:35 pm-11:33 pm

3 stops39h 58m

$391

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 2/5

5:40 pm-11:33 pm

3 stops37h 53m

$400

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 2/1

5:50 am-11:33 pm

3 stops49h 43m

$408

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 2/6

9:35 am-11:33 pm

3 stops45h 58m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 17 results
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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 British Airways, United Airlines, and Lufthansa fly from Bucharest Otopeni Intl Airport to St. Louis in about 21h 15m. The time it takes to get you to your destination can typically vary by up to 11h 58m. 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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Chesterfield
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Farmington
Festus

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