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$674+ Cheap flights from Otopeni Intl (OTP) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — STL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheap 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 November 13, 2025.

Round-trip from

$724
(Delta)
From Bucharest Otopeni Intl to Lambert-St Louis
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Find 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 November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/11. 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.
Wed 11/196:05 amOTP - STL
2 stops38h 23mUnited Airlines
Wed 11/266:43 pmSTL - OTP
2 stops15h 57mUnited Airlines
Deal found 11/11$674
This Delta deal was found by Cheapflights users on 11/11. 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.
Tue 11/186:00 amOTP - STL
2 stops22h 19mDelta
Tue 11/2511:39 amSTL - OTP
2 stops16h 26mDelta
Deal found 11/11$723
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 11/286:00 amOTP - STL
2 stops25h 23mDelta
Tue 12/27:05 amSTL - OTP
2 stops31h 45mDelta
Deal found 11/12$724
This Delta deal was found by Cheapflights users on 11/11. 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.
Tue 11/186:00 amOTP - STL
2 stops22h 46mDelta
Thu 11/2711:04 amSTL - OTP
2 stops17h 56mDelta
Deal found 11/11$729
This Delta deal was found by Cheapflights users on 11/11. 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 11/156:05 amOTP - STL
2 stops25h 17mDelta
Sun 11/234:30 pmSTL - OTP
2 stops22h 20mDelta
Deal found 11/11$772
This Delta deal was found by Cheapflights users on 11/11. 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.
Mon 11/176:00 amOTP - STL
2 stops25h 44mDelta
Tue 11/2511:39 amSTL - OTP
2 stops17h 21mDelta
Deal found 11/11$773
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Fri 11/145:55 amOTP - STL
2 stops36h 56mUnited Airlines
Wed 11/266:43 pmSTL - OTP
2 stops15h 57mUnited Airlines
Deal found 11/11$793
This Delta deal was found by Cheapflights users on 11/11. 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 11/156:00 amOTP - STL
2 stops25h 22mDelta
Tue 11/2511:39 amSTL - OTP
2 stops16h 26mDelta
Deal found 11/11$795
This Delta deal was found by Cheapflights users on 11/11. 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.
Sun 11/166:00 amOTP - STL
2 stops25h 44mDelta
Thu 11/273:15 pmSTL - OTP
2 stops17h 55mDelta
Deal found 11/11$796
This Delta deal was found by Cheapflights users on 11/11. 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.
Fri 11/146:00 amOTP - STL
2 stops18h 33mDelta
Thu 11/2712:49 pmSTL - OTP
2 stops16h 11mDelta
Deal found 11/11$801
This Delta deal was found by Cheapflights users on 11/11. 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.
Sun 11/166:00 amOTP - STL
2 stops25h 44mDelta
Sun 11/2311:39 amSTL - OTP
2 stops17h 21mDelta
Deal found 11/11$877
This Lufthansa deal was found by Cheapflights users on 11/11. 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.
Fri 11/285:55 amOTP - STL
1 stop16h 00mLufthansa
Tue 12/26:42 pmSTL - OTP
2 stops15h 53mLufthansa
Deal found 11/11$910

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 November 13, 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

Fri 11/28

6:00 am-11:23 pm

2 stops25h 23m

Lambert-St Louis

Tue 12/2

7:05 am-10:50 pm

2 stops31h 45m

$724

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 3/26

1:55 pm-8:39 pm

2 stops37h 44m

Lambert-St Louis

Mon 3/30

11:51 am-12:10 pm

2 stops16h 19m

$732

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 11/28

5:55 am-1:55 pm

1 stop16h 00m

Lambert-St Louis

Tue 12/2

6:42 pm-6:35 pm

2 stops15h 53m

$910

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 11/28

5:55 am-1:55 pm

1 stop16h 00m

Lambert-St Louis

Tue 12/2

1:00 pm-1:55 pm

2 stops16h 55m

$912

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 11/28

6:55 am-9:40 pm

3 stops22h 45m

Lambert-St Louis

Tue 12/2

4:05 pm-12:30 am

2 stops24h 25m

$1,022

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 11/28

6:55 am-7:39 pm

3 stops20h 44m

Lambert-St Louis

Tue 12/2

6:42 pm-12:30 pm

3 stops33h 48m

$1,114

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

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 Delta and Lufthansa fly from Bucharest Otopeni Intl Airport to St. Louis in about 16h. The time it takes to get you to your destination can typically vary by up to 9h 23m. 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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Alton
Farmington
Festus

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