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$460+ 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
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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.
Tue 12/232:45 pmSTL - OTP
2 stops49h 10mUnited Airlines
Sun 12/285:55 amOTP - STL
2 stops23h 48mUnited Airlines
Deal found 12/4$893
This Delta deal was found by Cheapflights users on 12/3. 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.
Sun 12/217:02 pmSTL - OTP
2 stops38h 08mDelta
Mon 1/191:55 pmOTP - STL
2 stops41h 42mDelta
Deal found 12/3$1,168
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/176:00 amSTL - OTP
2 stops27h 10mDelta
Tue 1/201:55 pmOTP - STL
2 stops38h 48mDelta
Deal found 12/3$1,210
This Delta deal was found by Cheapflights users on 12/3. 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.
Sun 12/217:02 pmSTL - OTP
2 stops38h 08mDelta
Sat 1/176:05 amOTP - STL
2 stops23h 30mDelta
Deal found 12/3$1,224
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/176:00 amSTL - OTP
2 stops27h 10mDelta
Sat 1/176:05 amOTP - STL
2 stops23h 30mDelta
Deal found 12/3$1,265
This Delta deal was found by Cheapflights users on 12/3. 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.
Sun 12/217:02 pmSTL - OTP
2 stops38h 08mDelta
Sun 1/186:00 amOTP - STL
2 stops25h 25mDelta
Deal found 12/3$1,283
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/1711:25 amSTL - OTP
2 stops17h 05mUnited Airlines
Wed 1/216:05 amOTP - STL
1 stop15h 50mUnited Airlines
Deal found 12/3$1,315
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/176:00 amSTL - OTP
2 stops27h 10mDelta
Sun 1/186:00 amOTP - STL
2 stops25h 25mDelta
Deal found 12/3$1,325
This Ovago deal was found by Cheapflights users on 12/4. 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.
Tue 12/236:35 pmSTL - OTP
2 stops45h 20mLufthansa
Sun 12/285:55 amOTP - STL
1 stop16h 00mLufthansa
Deal found 12/4$1,336
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/219:55 amSTL - OTP
2 stops24h 30mUnited Airlines
Wed 1/216:05 amOTP - STL
1 stop15h 50mUnited Airlines
Deal found 12/3$1,443
This Ovago deal was found by Cheapflights users on 12/4. 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 12/251:05 pmSTL - TSR
2 stops16h 55mLufthansa
Sat 12/272:40 pmTSR - STL
2 stops31h 15mLufthansa
Deal found 12/4$2,017
This Mytrip deal was found by Cheapflights users on 12/4. 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 12/259:55 amSTL - TSR
3 stops20h 05mMultiple Airlines
Sat 12/272:40 pmTSR - STL
2 stops31h 15mMultiple Airlines
Deal found 12/4$2,866

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$516
(United Airlines)

One-way from

$460
(Cheapflightsfares)

Popular in

March

Cheapest in

November

Average price

$1,017
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. 50% potential increase in price ($1,346 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 31% potential price decrease ($321 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 4, 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 1/14

7:10 am-10:50 pm

2 stops31h 40m

Bucharest Otopeni Intl

Thu 1/22

1:55 pm-4:39 pm

2 stops34h 44m

$519

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 1/18

1:05 pm-10:50 pm

2 stops25h 45m

Bucharest Otopeni Intl

Tue 1/27

6:00 am-8:37 pm

2 stops22h 37m

$519

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 1/20

6:25 am-12:05 pm

2 stops21h 40m

Bucharest Otopeni Intl

Tue 1/27

6:00 am-11:37 pm

2 stops25h 37m

$519

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 1/19

9:45 am-12:05 pm

2 stops18h 20m

Bucharest Otopeni Intl

Tue 1/27

6:00 am-11:37 pm

2 stops25h 37m

$519

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 1/20

1:18 pm-10:50 pm

2 stops25h 32m

Bucharest Otopeni Intl

Mon 1/26

1:55 pm-8:43 pm

2 stops38h 48m

$519

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/14

11:22 am-2:00 pm

2 stops18h 38m

Bucharest Otopeni Intl

Wed 1/21

6:05 am-1:55 pm

1 stop15h 50m

$520

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 1/14

3:50 pm-2:00 pm

1 stop14h 10m

Bucharest Otopeni Intl

Tue 1/27

5:55 am-3:29 pm

2 stops41h 34m

$522

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 1/18

3:50 pm-2:05 pm

1 stop14h 15m

Bucharest Otopeni Intl

Tue 1/27

5:55 am-3:29 pm

2 stops41h 34m

$522

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sat 1/17

3:40 pm-10:50 pm

2 stops47h 10m

Bucharest Otopeni Intl

Tue 1/27

1:55 pm-11:37 pm

2 stops17h 42m

$524

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/15

12:44 pm-2:05 pm

2 stops17h 21m

Bucharest Otopeni Intl

Wed 1/21

6:05 am-1:55 pm

1 stop15h 50m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 18 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 December 4, 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 December 4, 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
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
10,500 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
7,612 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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 21h 15m. The distance from St. Louis to Romania is about 5323 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$780Average$1,055FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$784Average$960FlexibilityNo cancel feeOn-time69%

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