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$686+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — STL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$692
(Delta)

One-way from

$686
(Delta)
From Bucharest Otopeni Intl to Lambert-St Louis
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One-way flight 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 August 14, 2025.

This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 8/291:45 pmOTP - STL
2 stops34h 51mDelta
Tue 9/21:26 pmSTL - OTP
2 stops19h 54mDelta
Deal found 8/13$692
This Gotogate deal was found by Cheapflights users on 8/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:00 amOTP - STL
1 stop15h 30mLufthansa
Tue 9/27:04 pmSTL - OTP
2 stops38h 51mLufthansa
Deal found 8/13$709
This Mytrip deal was found by Cheapflights users on 8/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:30 amOTP - STL
2 stops21h 30mMultiple Airlines
Tue 9/29:15 amSTL - OTP
3 stops23h 00mMultiple Airlines
Deal found 8/13$1,283

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 August 14, 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 8/29

1:45 pm-4:36 pm

2 stops34h 51m

Lambert-St Louis

Tue 9/2

1:26 pm-5:20 pm

2 stops19h 54m

$692

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 8/29

6:00 am-1:30 pm

1 stop15h 30m

Lambert-St Louis

Tue 9/2

7:04 pm-5:55 pm

2 stops38h 51m

$709

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 8/29

6:30 am-8:00 pm

2 stops21h 30m

Lambert-St Louis

Tue 9/2

9:15 am-4:15 pm

3 stops23h 00m

$1,283

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 10/5

7:00 am-11:24 pm

2 stops24h 24m

$686

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 10/5

6:00 am-1:30 pm

1 stop15h 30m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with Lufthansa from Bucharest Otopeni Intl Airport to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,317 reviews

Overall

6.8

Entertainment

6.4

Comfort

6.8

Boarding

7.0

Crew

7.6

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,317 reviews
Lufthansa
6.8
Okay
7,317 reviews

Overall

6.8

Entertainment

6.4

Comfort

6.8

Boarding

7.0

Crew

7.6

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

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. 1 airline 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.

  • What is the cheapest airline to fly from Bucharest Otopeni Intl Airport to St. Louis round-trip?

    According to our current data, Lufthansa ($720), offers the cheapest pricing from Bucharest Otopeni Intl Airport to St. Louis.

  • 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.

  • What is the cheapest month to book a flight from Bucharest Otopeni Intl Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to St. Louis (average of $311). Flying from Bucharest Otopeni Intl Airport to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

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Top airline flying from Otopeni Intl to St. Louis

Discover the top airline that operate flights from Otopeni Intl to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$720Average$888FlexibilityNo cancel feeOn-time76%

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