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$418+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — STL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$666
(British Airways)

One-way from

$418
(Kiwi.com)
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 junio 12, 2025.

This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/96:15 pmOTP - STL
2 stops34h 17mBritish Airways
vie. 9/265:00 pmSTL - OTP
2 stops22h 50mBritish Airways
Deal found 6/10$666
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:00 amOTP - STL
2 stops21h 57mUnited Airlines
mar. 9/233:20 pmSTL - OTP
2 stops19h 15mUnited Airlines
Deal found 6/12$691
This Lufthansa deal was found by Cheapflights users on 6/10. 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.
mié. 9/106:00 amOTP - STL
1 stop15h 30mLufthansa
mar. 9/235:30 pmSTL - OTP
2 stops23h 25mLufthansa
Deal found 6/10$703
This Air Canada deal was found by Cheapflights users on 6/10. 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.
sáb. 9/66:00 amOTP - STL
2 stops21h 57mAir Canada
dom. 9/211:30 pmSTL - OTP
2 stops19h 20mAir Canada
Deal found 6/10$706
This Air France deal was found by Cheapflights users on 6/10. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/87:00 amOTP - STL
2 stops17h 06mMultiple Airlines
mié. 9/244:40 pmSTL - OTP
2 stops15h 10mMultiple Airlines
Deal found 6/10$708
This Delta deal was found by Cheapflights users on 6/10. 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.
dom. 9/77:00 amOTP - STL
2 stops24h 23mDelta
vie. 9/267:05 pmSTL - OTP
2 stops38h 15mDelta
Deal found 6/10$738

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 junio 12, 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

mar. 9/9

6:15 pm-8:32 pm

2 stops34h 17m

Lambert-St Louis

vie. 9/26

5:00 pm-11:50 pm

2 stops22h 50m

$666

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

vie. 9/12

6:00 am-7:57 pm

2 stops21h 57m

Lambert-St Louis

mar. 9/23

3:20 pm-6:35 pm

2 stops19h 15m

$691

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

mié. 9/10

6:00 am-1:30 pm

1 stop15h 30m

Lambert-St Louis

mar. 9/23

5:30 pm-12:55 am

2 stops23h 25m

$703

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

sáb. 9/6

6:00 am-7:57 pm

2 stops21h 57m

Lambert-St Louis

dom. 9/21

1:30 pm-4:50 pm

2 stops19h 20m

$706

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

lun. 9/8

7:00 am-4:06 pm

2 stops17h 06m

Lambert-St Louis

mié. 9/24

4:40 pm-3:50 pm

2 stops15h 10m

$708

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

dom. 9/7

7:00 am-11:23 pm

2 stops24h 23m

Lambert-St Louis

vie. 9/26

7:05 pm-5:20 pm

2 stops38h 15m

$738

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

mié. 9/10

9:35 pm-1:17 pm

2 stops47h 42m

$418

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

mar. 9/9

8:25 am-9:41 am

2 stops33h 16m

$672

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

sáb. 9/6

7:00 am-2:30 pm

2 stops15h 30m

$674

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

dom. 9/7

7:00 am-4:45 pm

2 stops17h 45m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 13 results
1
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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.

Cheapflights Insights

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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 junio 12, 2025.
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Emirates
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Delta
8.0
Very good
7,950 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
KLM
7.8
Good
1,358 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
United Airlines
7.4
Good
8,790 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
American Airlines
7.2
Good
10,000 reviews
Emirates
8.1
Very good
3,264 reviews

Overall

8.1

Entertainment

8.2

Food

7.8

Boarding

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

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.

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

    According to our current data, British Airways ($666), United Airlines ($691), and Lufthansa ($703) offers the cheapest pricing from Bucharest Otopeni Intl Airport to St. Louis.

  • What are the cheapest airlines to fly from Bucharest Otopeni Intl Airport to St. Louis one-way?

    The cheapest airlines for a one-way flight from Bucharest Otopeni Intl Airport to St. Louis are American Airlines ($672), Delta ($674), and KLM ($675).

  • 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 Bucharest Otopeni Intl Airport?

Book flights to Bucharest Otopeni Intl Airport if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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