HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Romania

$297+ 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
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Romania with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/28. 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 4/129:10 am
STL
-
OTP
2 stops25h 25m
United Airlines
Sun 4/196:05 am
OTP
-
STL
1 stop15h 20m
United Airlines
Deal found 1/28$592
This FlightHub deal was found by Cheapflights users on 1/28. 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.
Sun 4/123:30 pm
STL
-
OTP
1 stop17h 00m
Lufthansa
Sun 4/196:05 am
OTP
-
STL
1 stop15h 20m
Lufthansa
Deal found 1/28$599
This United Airlines deal was found by Cheapflights users on 1/28. 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 4/129:10 am
STL
-
OTP
2 stops25h 25m
United Airlines
Sat 4/181:55 pm
OTP
-
STL
1 stop31h 30m
United Airlines
Deal found 1/28$613
This FlightHub deal was found by Cheapflights users on 1/28. 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.
Sun 4/123:30 pm
STL
-
OTP
1 stop13h 35m
Lufthansa
Sat 4/181:55 pm
OTP
-
STL
1 stop31h 30m
Lufthansa
Deal found 1/28$619
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/256:55 pm
STL
-
SBZ
2 stops15h 20m
United Airlines
Sun 3/12:30 pm
SBZ
-
STL
2 stops17h 29m
United Airlines
Deal found 1/28$692
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/42:45 pm
STL
-
CLJ
2 stops38h 55m
United Airlines
Sun 2/82:25 pm
CLJ
-
STL
2 stops17h 34m
United Airlines
Deal found 1/26$852
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/58:05 am
STL
-
OTP
2 stops22h 00m
United Airlines
Mon 2/95:55 am
OTP
-
STL
2 stops16h 35m
United Airlines
Deal found 1/26$862
This United Airlines deal was found by Cheapflights users on 1/26. 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 6/216:40 am
STL
-
OTP
2 stops21h 20m
United Airlines
Tue 6/306:05 am
OTP
-
STL
1 stop15h 20m
United Airlines
Deal found 1/26$947
This United Airlines deal was found by Cheapflights users on 1/26. 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 6/216:40 am
STL
-
OTP
2 stops21h 20m
United Airlines
Fri 7/36:05 am
OTP
-
STL
2 stops20h 22m
United Airlines
Deal found 1/26$950
This United Airlines deal was found by Cheapflights users on 1/26. 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 6/227:25 am
STL
-
OTP
2 stops20h 35m
United Airlines
Fri 7/36:05 am
OTP
-
STL
1 stop15h 20m
United Airlines
Deal found 1/26$951

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$592
(United Airlines)

One-way from

$297
(American Airlines)

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 Romania
Search Deals
One-way flight from Lambert-St Louis to Romania
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($239 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
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 January 29, 2026.
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

Sun 4/12

9:10 am-6:35 pm

2 stops25h 25m

Bucharest Otopeni Intl

Sun 4/19

6:05 am-1:25 pm

1 stop15h 20m

$592

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/12

9:10 am-6:35 pm

2 stops25h 25m

Bucharest Otopeni Intl

Sat 4/18

1:55 pm-1:25 pm

1 stop31h 30m

$613

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/12

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Sat 4/18

1:55 pm-1:25 pm

1 stop31h 30m

$619

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Wed 2/25

6:55 pm-6:15 pm

2 stops15h 20m

Sibiu

Sun 3/1

2:30 pm-11:59 pm

2 stops17h 29m

$692

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 6/21

6:40 am-12:00 pm

2 stops21h 20m

Bucharest Otopeni Intl

Tue 6/30

6:05 am-1:25 pm

1 stop15h 20m

$947

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 6/21

8:00 am-12:00 pm

2 stops20h 00m

Bucharest Otopeni Intl

Fri 7/3

6:05 am-1:25 pm

1 stop15h 20m

$947

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 6/21

6:40 am-12:00 pm

2 stops21h 20m

Bucharest Otopeni Intl

Wed 7/1

6:05 am-1:25 pm

1 stop15h 20m

$947

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 6/22

5:29 pm-6:35 pm

2 stops17h 06m

Bucharest Otopeni Intl

Tue 6/30

6:05 am-1:25 pm

1 stop15h 20m

$948

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 6/22

7:25 am-12:00 pm

2 stops20h 35m

Bucharest Otopeni Intl

Fri 7/3

6:05 am-1:25 pm

1 stop15h 20m

$951

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 6/22

7:25 am-12:00 pm

2 stops20h 35m

Bucharest Otopeni Intl

Wed 7/1

6:05 am-1:25 pm

1 stop15h 20m

$951

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 14 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
No data available for this route at this time. Please check back soon.

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 January 29, 2026.
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
8,128 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
8,128 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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.
United Airlines
7.4
Good
9,215 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
10,667 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
7,754 reviews
Delta
7.9
Good
8,128 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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 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 13h 35m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Romania

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Heathrow flights
Kansas City to Heathrow flights
St. Louis to Frankfurt flights
Kansas City to Dublin flights
St. Louis to Gatwick flights
St. Louis to Leonardo da Vinci/Fiumicino flights
St. Louis to Charles de Gaulle flights
St. Louis to Dublin flights
St. Louis to Orly flights
Kansas City to Charles de Gaulle flights
St. Louis to London City flights
Kansas City to Leonardo da Vinci/Fiumicino flights
St. Louis to Athens flights
St. Louis to Malpensa flights
Kansas City to Gatwick flights
Kansas City to Athens flights
St. Louis to Barcelona-El Prat flights
St. Louis to Linate flights
St. Louis to Stansted flights
St. Louis to Amsterdam flights
St. Louis to Istanbul flights
St. Louis to Madrid flights
St. Louis to Edinburgh flights
St. Louis to Zurich flights
St. Louis to Lisbon flights
Kansas City to London City flights
Kansas City to Vicenza flights
Kansas City to Amsterdam flights
Kansas City to Frankfurt flights
Kansas City to Stansted flights
Kansas City to Lisbon flights
Kansas City to Barcelona-El Prat flights
Kansas City to Madrid flights
Kansas City to Orly flights
Kansas City to Edinburgh flights
St. Louis to Sarajevo flights
Kansas City to Otopeni Intl flights
Springfield to Istanbul flights
St. Louis to Florence flights
St. Louis to Sabiha Gokcen flights
St. Louis to Keflavik Intl flights
St. Louis to Copenhagen flights
Springfield to Heathrow flights
St. Louis to Zagreb flights
Kansas City to Frederic Chopin flights
Kansas City to Glasgow Intl flights
Kansas City to Malpensa flights
Kansas City to Prague flights
St. Louis to Berlin flights
Kansas City to Oslo Gardermoen flights

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$707Average$825FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$780Average$1,231FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.