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$763+ Cheap flights from St. Louis (STL) to Bucharest (BUH)

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BUH
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from St. Louis to Bucharest

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Bucharest (BUH). 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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$763
(FlightHub)
Provider with most accurate pricing for Lambert-St Louis-Bucharest (BUH) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Bucharest (BUH) flights.
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From Lambert-St Louis to Bucharest (BUH)
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Find flight deals from St. Louis to Bucharest

Cheapest flights from St. Louis to Bucharest
Explore the most affordable flight options available from St. Louis to Bucharest. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This FlightHub deal was found by Cheapflights users on 3/30. 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.
Fri 8/153:30 pmSTL - OTP
2 stops21h 05mScandinavian Airlines
Fri 9/199:50 pmOTP - STL
2 stops30h 57mScandinavian Airlines
Deal found 3/30$763
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Fri 8/153:30 pmSTL - OTP
1 stop18h 25mUnited Airlines
Fri 9/196:00 amOTP - STL
2 stops21h 57mUnited Airlines
Deal found 3/30$872
This Travelocity deal was found by Cheapflights users on 3/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/153:30 pmSTL - OTP
1 stop13h 25mLufthansa
Fri 9/196:00 amOTP - STL
1 stop15h 30mLufthansa
Deal found 3/30$884
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/224:52 pmSTL - OTP
2 stops22h 58mBritish Airways
Sun 9/148:20 amOTP - STL
2 stops20h 03mBritish Airways
Deal found 3/30$941
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:57 pmSTL - OTP
2 stops43h 33mMultiple Airlines
Wed 4/166:00 amOTP - STL
1 stop15h 30mMultiple Airlines
Deal found 3/29$1,272
This oojo deal was found by Cheapflights users on 3/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:30 amSTL - OTP
2 stops24h 05mTurkish Airlines
Wed 5/289:30 amOTP - STL
2 stops45h 15mTurkish Airlines
Deal found 3/31$1,339
This Air Canada deal was found by Cheapflights users on 3/31. 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.
Wed 4/23:30 pmSTL - OTP
2 stops18h 25mAir Canada
Sun 4/136:00 amOTP - STL
3 stops22h 04mAir Canada
Deal found 3/31$1,692

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Bucharest 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 March 31, 2025.
Use the filters below to find and compare flights from St. Louis to Bucharest that are best for you.

Fly from

St. Louis

Fly to

Bucharest

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 8/15

3:30 pm-8:35 pm

2 stops21h 05m

Bucharest Otopeni Intl

Fri 9/19

9:50 pm-8:47 pm

2 stops30h 57m

$763

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 8/15

3:30 pm-5:55 pm

1 stop18h 25m

Bucharest Otopeni Intl

Fri 9/19

6:00 am-7:57 pm

2 stops21h 57m

$872

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 8/15

3:30 pm-12:55 pm

1 stop13h 25m

Bucharest Otopeni Intl

Fri 9/19

6:00 am-1:30 pm

1 stop15h 30m

$884

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 8/22

4:52 pm-11:50 pm

2 stops22h 58m

Bucharest Otopeni Intl

Sun 9/14

8:20 am-8:23 pm

2 stops20h 03m

$941

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Compare providers for flights from St. Louis to Bucharest

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 Bucharest in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
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 flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Bucharest flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Bucharest flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Bucharest flights, Cheapflights users trust FlightHub the most. FlightHub 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 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 Bucharest

Have a flexible travel schedule? Discover the best time to fly to Bucharest 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

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

Find hourly flight availability from St. Louis to Bucharest. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

When flying from St. Louis to Bucharest, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the afternoon.

Rainfall in Bucharest by month

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

In terms of precipitation, rainfall in Bucharest 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 when rainfall is around 0.8 in.

Temperature in Bucharest by month

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

If weather is an important factor for your trip to Bucharest, 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 Bucharest

Get insights into the airlines that provide service to Bucharest. 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 Bucharest. Reviews last updated March 31, 2025.
Read through reviews of airlines operating flights from St. Louis to Bucharest, such as United Airlines, Scandinavian Airlines and Lufthansa. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,614 reviews

Food

6.6

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Overall

7.4

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
8,614 reviews
United Airlines
7.4
Good
8,614 reviews

Food

6.6

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Overall

7.4

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??
Scandinavian Airlines
7.3
Good
1,326 reviews
United Airlines
7.4
Good
8,614 reviews

Food

6.6

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Overall

7.4

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
6,960 reviews
United Airlines
7.4
Good
8,614 reviews

Food

6.6

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Overall

7.4

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??
British Airways
6.6
Okay
6,713 reviews
United Airlines
7.4
Good
8,614 reviews

Food

6.6

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Overall

7.4

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 Bucharest. 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?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Bucharest. On average, Lambert-St Louis has 0 outbound flights to Bucharest per day from 2 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

    Currently priced at $763, Scandinavian Airlines will fly you from St. Louis to Bucharest and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $872 and $884, respectively.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Bucharest (average of $604). Flying from St. Louis to Bucharest in June is currently the most expensive (average of $1,175). 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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Top 2 airlines flying from St. Louis to Bucharest

Discover the top 2 airlines that operate flights from St. Louis to Bucharest. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$960FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$788Average$1,068FlexibilityNo cancel feeOn-time76%
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