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Bucharest

$293+ Cheap flights from St. Louis (STL) to Bucharest (BUH)

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 — BUH
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap 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 January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 3/77:00 pm
STL
-
OTP
2 stops35h 05m
United Airlines
Sat 3/142:50 pm
OTP
-
STL
2 stops37h 17m
United Airlines
Deal found 1/21$573
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 1/298:30 am
STL
-
OTP
2 stops21h 35m
United Airlines
Mon 2/22:50 pm
OTP
-
STL
2 stops31h 40m
United Airlines
Deal found 1/20$603
This United Airlines deal was found by Cheapflights users on 1/18. 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.
Wed 1/213:50 pm
STL
-
OTP
1 stop14h 10m
United Airlines
Sun 1/255:55 am
OTP
-
STL
1 stop16h 00m
United Airlines
Deal found 1/18$796
This Air Canada deal was found by Cheapflights users on 1/21. 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.
Sat 3/74:05 pm
STL
-
OTP
2 stops24h 20m
Multiple Airlines
Sat 3/146:55 am
OTP
-
STL
3 stops21h 10m
Multiple Airlines
Deal found 1/21$837
This Air Canada deal was found by Cheapflights users on 1/19. 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.
Tue 6/21:00 pm
STL
-
OTP
2 stops21h 35m
Air Canada
Thu 8/66:05 am
OTP
-
STL
2 stops45h 57m
Air Canada
Deal found 1/19$953
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Sun 5/316:49 pm
STL
-
OTP
2 stops22h 21m
United Airlines
Fri 8/76:05 am
OTP
-
STL
2 stops18h 21m
United Airlines
Deal found 1/19$957
This Air Canada deal was found by Cheapflights users on 1/19. 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.
Mon 6/17:30 am
STL
-
OTP
2 stops27h 05m
Air Canada
Thu 8/61:45 pm
OTP
-
STL
2 stops38h 17m
Air Canada
Deal found 1/19$958
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Sun 5/316:49 pm
STL
-
OTP
2 stops22h 21m
United Airlines
Tue 8/41:50 pm
OTP
-
STL
2 stops33h 31m
United Airlines
Deal found 1/19$963
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Mon 6/17:30 am
STL
-
OTP
2 stops21h 35m
United Airlines
Fri 8/76:05 am
OTP
-
STL
2 stops18h 21m
United Airlines
Deal found 1/19$972

Find 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$573
(United Airlines)

One-way from

$293
(Iberia)

Popular in

June

Cheapest in

November
Provider with most accurate pricing for Lambert-St Louis-Bucharest (BUH) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Bucharest (BUH) flights.
Search Deals
From Lambert-St Louis to Bucharest (BUH)
Search Deals
One-way flight from Lambert-St Louis to Bucharest (BUH)
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($247 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
Search Deals

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 January 21, 2026.
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

Sat 3/7

7:00 pm-2:05 pm

2 stops35h 05m

Bucharest Otopeni Intl

Sat 3/14

2:50 pm-9:07 pm

2 stops37h 17m

$573

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sat 3/7

4:05 pm-12:25 am

2 stops24h 20m

Bucharest Otopeni Intl

Sat 3/14

6:55 am-9:05 pm

3 stops21h 10m

$837

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 6/2

1:00 pm-6:35 pm

2 stops21h 35m

Bucharest Otopeni Intl

Thu 8/6

6:05 am-8:02 pm

2 stops45h 57m

$953

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 5/31

6:49 pm-1:10 am

2 stops22h 21m

Bucharest Otopeni Intl

Fri 8/7

6:05 am-4:26 pm

2 stops18h 21m

$957

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 6/2

6:49 pm-1:10 am

2 stops22h 21m

Bucharest Otopeni Intl

Fri 8/7

6:05 am-4:26 pm

2 stops18h 21m

$957

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 6/1

7:30 am-6:35 pm

2 stops27h 05m

Bucharest Otopeni Intl

Thu 8/6

1:45 pm-8:02 pm

2 stops38h 17m

$958

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 5/31

6:49 pm-1:10 am

2 stops22h 21m

Bucharest Otopeni Intl

Tue 8/4

1:50 pm-3:21 pm

2 stops33h 31m

$963

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 5/31

7:30 am-12:00 pm

2 stops20h 30m

Bucharest Otopeni Intl

Thu 8/6

1:45 pm-8:02 pm

2 stops38h 17m

$1,047

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 6/2

6:49 pm-1:10 am

2 stops22h 21m

Bucharest Otopeni Intl

Mon 8/3

1:50 pm-1:25 pm

1 stop31h 35m

$1,056

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 5/1

9:35 pm-11:50 pm

1 stop18h 15m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 14 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Expedia the most. Expedia 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
No data available for this route at this time. Please check back soon.

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 January 21, 2026.
Read reviews from past customers who have flown Delta, Air Canada, and Lufthansa from St. Louis to Bucharest. 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
7.9
Good
8,088 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,088 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,646 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,738 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

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

    There are many flights that can get you from St. Louis to Bucharest in 21h 35m. Fly via United Airlines or Air Canada to get the fastest option. The distance from St. Louis to Bucharest is about 5451 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $754, United Airlines will fly you from St. Louis to Bucharest and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Lufthansa for as low as $780. You may be able to fly from St. Louis to Bucharest for 22% less than the average price by searching for these airlines.

  • 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.

See more FAQs

Traveling to a place near Bucharest?

Book flights to Bucharest 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$754Average$924FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$780Average$1,329FlexibilityNo cancel feeOn-time76%

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