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Otopeni Intl

$1,209+ Cheap flights from St. Louis (STL) to Otopeni Intl (OTP)

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OTP
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,209
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$1,454
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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Highest demand for flights based on searches. 7% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/27. 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.
Tue 7/15:31 pmSTL - OTP
2 stops17h 04mUnited Airlines
Fri 8/16:05 amOTP - STL
2 stops24h 40mUnited Airlines
Deal found 4/27$1,209
This Gotogate deal was found by Cheapflights users on 4/28. 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.
Thu 6/121:30 pmSTL - OTP
2 stops20h 25mMultiple Airlines
Thu 6/196:00 amOTP - STL
2 stops21h 58mMultiple Airlines
Deal found 4/28$1,241
This Justfly.com deal was found by Cheapflights users on 4/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/121:30 pmSTL - OTP
2 stops15h 30mAir Canada
Wed 7/21:55 pmOTP - STL
2 stops37h 45mAir Canada
Deal found 4/29$1,263
This Gurufare deal was found by Cheapflights users on 4/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/15:31 pmSTL - OTP
2 stops17h 04mLufthansa
Fri 8/16:00 amOTP - STL
1 stop15h 30mLufthansa
Deal found 4/27$1,485

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 April 29, 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

Tue 7/1

5:31 pm-6:35 pm

2 stops17h 04m

Bucharest Otopeni Intl

Fri 8/1

6:05 am-10:45 pm

2 stops24h 40m

$1,209

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 6/12

1:30 pm-5:55 pm

2 stops20h 25m

Bucharest Otopeni Intl

Thu 6/19

6:00 am-7:58 pm

2 stops21h 58m

$1,241

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 6/12

1:30 pm-1:00 pm

2 stops15h 30m

Bucharest Otopeni Intl

Wed 7/2

1:55 pm-7:40 pm

2 stops37h 45m

$1,263

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 7/1

5:31 pm-6:35 pm

2 stops17h 04m

Bucharest Otopeni Intl

Fri 8/1

6:00 am-1:30 pm

1 stop15h 30m

$1,485

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 29, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 16% on flights from St. Louis to Bucharest Otopeni Intl Airport by exploring options for tickets at noon.

Rainfall in Otopeni Intl by month

Plan your trip to Otopeni Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bucharest Otopeni Intl Airport ranges from 0.8 - 3.1 inches per month. June is typically the wettest month, when rainfall can reach 3.1 in. October is typically the driest time to visit Bucharest Otopeni Intl Airport when rainfall is around 0.8 in.

Temperature in Otopeni Intl by month

Plan your trip to Otopeni Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bucharest Otopeni Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 29, 2025.
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,696 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,242 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.7
Okay
7,042 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What are the cheapest airlines flying from St. Louis to Bucharest Otopeni Intl Airport round-trip?

    According to our current data, United Airlines ($1,209), Air Canada ($1,263), and Lufthansa ($1,485) offers the cheapest pricing from St. Louis to Bucharest Otopeni Intl Airport.

  • 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.

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

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Bucharest Otopeni Intl Airport (average of $604). Flying from St. Louis to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,169). 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

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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.
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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$960FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$788Average$1,055FlexibilityNo cancel feeOn-time76%

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