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Otopeni Intl

$467+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OTP
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$893
(Justfly.com)

One-way from

$467
(FlightHub)

Popular in

November

Cheapest in

January

Average price

$1,160
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. 13% potential increase in price ($168 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/263:30 pmSTL - OTP
1 stop18h 25mMultiple Airlines
dom. 10/51:55 pmOTP - STL
2 stops37h 43mMultiple Airlines
Deal found 6/12$893
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/99:15 amSTL - OTP
2 stops23h 35mAir Canada
mié. 7/166:00 amOTP - STL
2 stops22h 50mAir Canada
Deal found 6/11$1,012
This United Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 7/255:30 pmSTL - OTP
2 stops23h 30mUnited Airlines
sáb. 8/91:40 pmOTP - STL
2 stops58h 51mUnited Airlines
Deal found 6/11$1,036
This Gurufare deal was found by Cheapflights users on 6/12. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/275:30 pmSTL - OTP
2 stops23h 30mLufthansa
dom. 8/36:05 amOTP - STL
2 stops17h 42mLufthansa
Deal found 6/12$1,105
This Delta deal was found by Cheapflights users on 6/11. 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.
mié. 7/211:29 amSTL - OTP
2 stops17h 31mDelta
sáb. 7/267:00 amOTP - STL
2 stops33h 34mDelta
Deal found 6/11$1,290
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/213:42 pmSTL - OTP
2 stops20h 53mScandinavian Airlines
jue. 7/249:55 pmOTP - STL
2 stops33h 58mScandinavian Airlines
Deal found 6/11$1,596
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/188:10 amSTL - OTP
2 stops16h 00mTurkish Airlines
lun. 7/219:45 pmOTP - STL
2 stops33h 00mTurkish Airlines
Deal found 6/11$1,685

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 junio 12, 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

vie. 9/26

3:30 pm-5:55 pm

1 stop18h 25m

Bucharest Otopeni Intl

dom. 10/5

1:55 pm-7:38 pm

2 stops37h 43m

$893

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

mié. 7/9

9:15 am-4:50 pm

2 stops23h 35m

Bucharest Otopeni Intl

mié. 7/16

6:00 am-8:50 pm

2 stops22h 50m

$1,012

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

vie. 7/25

5:30 pm-1:00 am

2 stops23h 30m

Bucharest Otopeni Intl

sáb. 8/9

1:40 pm-4:31 pm

2 stops58h 51m

$1,036

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

dom. 7/27

5:30 pm-1:00 am

2 stops23h 30m

Bucharest Otopeni Intl

dom. 8/3

6:05 am-3:47 pm

2 stops17h 42m

$1,105

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

mié. 7/2

11:29 am-1:00 pm

2 stops17h 31m

Bucharest Otopeni Intl

sáb. 7/26

7:00 am-8:34 am

2 stops33h 34m

$1,290

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

dom. 10/26

3:03 pm-11:45 pm

2 stops25h 42m

Bucharest Otopeni Intl

mar. 11/4

4:25 pm-7:48 pm

2 stops35h 23m

$2,899

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

dom. 10/26

8:01 pm-3:35 pm

2 stops36h 34m

Bucharest Otopeni Intl

dom. 11/2

3:55 pm-4:09 pm

2 stops32h 14m

$2,945

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

sáb. 9/27

1:30 pm-8:35 pm

2 stops23h 05m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 junio 12, 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 junio 12, 2025.
To help decide which airline to fly from St. Louis to Bucharest, see what other customers have to say about Delta, United Airlines and Scandinavian Airlines. 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.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.3
Good
1,387 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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, Air Canada ($1,012), United Airlines ($1,036), and Lufthansa ($1,105) offers the cheapest pricing from St. Louis to Bucharest Otopeni Intl Airport. You may be able to fly from St. Louis to Bucharest Otopeni Intl Airport for 5% less than the average price by searching for these airlines.

  • 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 $1,146). 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?

Book flights to St. Louis 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.
Springfield to Otopeni Intl flights
Kansas City to Otopeni Intl flights
Columbia to Otopeni Intl flights

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$961FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$788Average$1,036FlexibilityNo cancel feeOn-time76%

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