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Otopeni Intl

$527+ Cheap flights from St. Louis (STL) to Otopeni Intl (OTP)

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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OTP
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from St. Louis to Otopeni Intl

Cheapest flights from St. Louis to Otopeni Intl
Explore the most affordable flight options available from St. Louis to Otopeni Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:05 pmSTL - OTP
3 stops20h 40mMultiple Airlines
Tue 12/210:50 amOTP - STL
2 stops35h 05mMultiple Airlines
Deal found 11/11$745
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:36 pmSTL - OTP
2 stops16h 49mKLM
Tue 12/28:35 amOTP - STL
2 stops20h 12mKLM
Deal found 11/11$754
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:50 pmSTL - OTP
1 stop18h 50mLufthansa
Tue 12/22:50 pmOTP - STL
1 stop31h 05mLufthansa
Deal found 11/11$756

Cheap flight deals from St. Louis to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Otopeni Intl (OTP). 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.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$530
(Cheapflightsfares)

One-way from

$527
(Cheapflightsfares)

Popular in

March

Cheapest in

November

Average price

$475
Provider with most accurate pricing for Lambert-St Louis-Bucharest Otopeni Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Bucharest Otopeni Intl flights.
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From Lambert-St Louis to Bucharest Otopeni Intl
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One-way flight from Lambert-St Louis to Bucharest Otopeni Intl
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Highest demand for flights based on searches. 50% potential increase in price ($1,354 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 32% potential price decrease ($323 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Otopeni Intl 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 St. Louis to Bucharest Otopeni Intl Airport that are best for you.

Fly from

St. Louis

Fly to

Otopeni Intl

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:40 pm-1:05 am

2 stops22h 25m

Bucharest Otopeni Intl

Wed 1/21

6:05 am-1:55 pm

1 stop15h 50m

$530

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Wed 1/21

6:00 am-4:39 pm

2 stops18h 39m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/8

9:45 am-12:05 pm

2 stops18h 20m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:06 pm

2 stops22h 06m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:25 am-12:05 pm

2 stops21h 40m

Bucharest Otopeni Intl

Sat 1/24

6:00 am-7:27 pm

2 stops21h 27m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Thu 1/22

6:00 am-8:39 pm

2 stops22h 39m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

9:45 am-12:05 pm

2 stops18h 20m

Bucharest Otopeni Intl

Sun 1/18

6:00 am-9:38 pm

2 stops23h 38m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:25 am-12:05 pm

2 stops21h 40m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:45 pm

2 stops22h 45m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/8

6:00 am-12:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

Fri 1/23

6:00 am-11:25 pm

2 stops25h 25m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Sat 1/24

6:00 am-5:31 pm

2 stops19h 31m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:45 pm

2 stops22h 45m

$548

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 12 results
1
2

Compare providers for flights from St. Louis to Otopeni Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Otopeni Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Bucharest Otopeni Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Bucharest Otopeni Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Bucharest Otopeni Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Bucharest Otopeni Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Otopeni Intl from St. Louis 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Bucharest Otopeni Intl Airport

What is the cheapest time of day to fly from STL to OTP?

Find hourly flight availability from St. Louis to Otopeni Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 15% on flights from St. Louis to Bucharest Otopeni Intl Airport by exploring options for tickets at noon.

Reviews of airlines servicing Otopeni Intl

Get insights into the airlines that provide service to Otopeni Intl. 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 Otopeni Intl. Reviews last updated November 13, 2025.
Read reviews from past customers who have flown United Airlines and Lufthansa from St. Louis to Bucharest Otopeni Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,017 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,572 reviews
United Airlines
7.4
Good
9,017 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Otopeni Intl. 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 from for flights from St. Louis to Bucharest Otopeni Intl?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Bucharest Otopeni Intl from St. Louis. Booking flights from Lambert-St Louis (STL) to Bucharest Otopeni Intl should be relatively easy as there are 0 daily outbound flights to Bucharest Otopeni Intl from 2 different airlines.

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

    For as low as $530, Lufthansa can have you in Bucharest Otopeni Intl Airport from St. Louis in 22h 25m. The distance between St. Louis and Bucharest Otopeni Intl Airport is about 5451 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Otopeni Intl 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 Bucharest Otopeni Intl Airport?

Book flights to Bucharest Otopeni Intl Airport if you plan to visit one of these locations
Otopeni

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Alternative routes for St. Louis to Otopeni Intl

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Otopeni Intl flights
Springfield to Otopeni Intl flights
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Top 2 airlines flying from St. Louis to Otopeni Intl

Discover the top 2 airlines that operate flights from St. Louis to Otopeni Intl. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$780Average$1,055FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$784Average$960FlexibilityNo cancel feeOn-time69%

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