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$527+ Cheap flights from St. Louis (STL) to Romania

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 — OTP
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from St. Louis to Romania

Cheapest flights from St. Louis to Romania
Explore the most affordable flight options available from St. Louis to Romania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:05 pmSTL - OTP
3 stops20h 40mMultiple Airlines
Tue 12/210:50 amOTP - STL
2 stops35h 05mMultiple Airlines
Deal found 11/11$745
This KLM deal was found by Cheapflights users on 11/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:36 pmSTL - OTP
2 stops16h 49mKLM
Tue 12/28:35 amOTP - STL
2 stops20h 12mKLM
Deal found 11/11$754
This Ovago deal was found by Cheapflights users on 11/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:50 pmSTL - OTP
1 stop18h 50mLufthansa
Tue 12/22:50 pmOTP - STL
1 stop31h 05mLufthansa
Deal found 11/11$756
This Ovago deal was found by Cheapflights users on 11/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:35 pmSTL - SBZ
2 stops22h 15mLufthansa
Thu 1/86:00 amSBZ - STL
2 stops24h 58mLufthansa
Deal found 11/13$1,706
This Mytrip deal was found by Cheapflights users on 11/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/184:05 pmSTL - SBZ
3 stops24h 45mMultiple Airlines
Thu 1/86:00 amSBZ - STL
2 stops41h 29mMultiple Airlines
Deal found 11/13$2,997

Cheap flight deals from St. Louis to Romania

Keep the following information in mind while searching for St. Louis to Romania flight deals. Data was last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$477
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$475
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 Romania
Search Deals
Highest demand for flights based on searches. 50% potential increase in price ($1,354 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 32% potential price decrease ($323 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Romania 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 November 13, 2025.
Use the filters below to find and compare flights from St. Louis to Romania that are best for you.

Fly from

St. Louis

Fly to

Romania

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:40 pm-1:05 am

2 stops22h 25m

Bucharest Otopeni Intl

Wed 1/21

6:05 am-1:55 pm

1 stop15h 50m

$530

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Wed 1/21

6:00 am-4:39 pm

2 stops18h 39m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/8

9:45 am-12:05 pm

2 stops18h 20m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:06 pm

2 stops22h 06m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:25 am-12:05 pm

2 stops21h 40m

Bucharest Otopeni Intl

Sat 1/24

6:00 am-7:27 pm

2 stops21h 27m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Thu 1/22

6:00 am-8:39 pm

2 stops22h 39m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

9:45 am-12:05 pm

2 stops18h 20m

Bucharest Otopeni Intl

Sun 1/18

6:00 am-9:38 pm

2 stops23h 38m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/7

6:25 am-12:05 pm

2 stops21h 40m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:45 pm

2 stops22h 45m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/8

6:00 am-12:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

Fri 1/23

6:00 am-11:25 pm

2 stops25h 25m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Sat 1/24

6:00 am-5:31 pm

2 stops19h 31m

$548

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 1/9

6:25 am-1:50 pm

2 stops23h 25m

Bucharest Otopeni Intl

Tue 1/20

6:00 am-8:45 pm

2 stops22h 45m

$548

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 16 results
1
2

Best time to book a flight from St. Louis to Romania

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

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

Find hourly flight availability from St. Louis to Romania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

It’s optimal to fly from St. Louis to Romania in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Romania

Get insights into the airlines that provide service to Romania. 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 Romania. Reviews last updated November 13, 2025.
See what other customers who have flown with Delta, United Airlines, and Air Canada from St. Louis to Romania have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

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.
United Airlines
7.4
Good
9,017 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

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
10,448 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

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
7,572 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

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 Romania. 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 Romania?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Romania.

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

    Departing from St. Louis to Romania will take you 22h 25m. The distance from St. Louis to Romania is about 5451 mi. This flight may include one or multiple stops.

  • What are the most popular routes from St. Louis to Romania?

    The most popular flight routes from St. Louis to Romania are Lambert-St Louis - Bucharest Otopeni Intl, Lambert-St Louis - Cluj Napoca and Lambert-St Louis - Sibiu.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Romania 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

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Alternative routes for St. Louis to Romania

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 Romania

Discover the top 2 airlines that operate flights from St. Louis to Romania. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$780Average$1,055FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$784Average$960FlexibilityNo cancel feeOn-time69%

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