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

Departing from St. Louis to Romania will take you 16h 30m. The distance from St. Louis to Romania is about 5323 mi. This flight may include one or multiple stops.

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

If weather is an important factor for your trip to Romania, 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).

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 - Sibiu and Lambert-St Louis - Cluj Napoca.

What are the most popular airlines that fly from St. Louis to Romania?

Before booking your flight from St. Louis to Romania check out the most popular airlines for this route: Lufthansa, Air Canada or Delta.

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.

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.

$532+ Flights from St. Louis to Romania

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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 15, 2025.

Tue 12/236:35 pmSTL - OTP

2 stops45h 20mLufthansa

Sun 12/285:55 amOTP - STL

1 stop16h 00mLufthansa

Deal found 12/13

$1,799

Tue 12/234:05 pmSTL - OTP

2 stops47h 50mMultiple Airlines

Sun 12/286:55 amOTP - STL

3 stops22h 48mMultiple Airlines

Deal found 12/14

$1,985

Tue 12/236:35 pmSTL - OTP

3 stops33h 55mAir Canada

Sun 12/286:55 amOTP - STL

3 stops22h 48mAir Canada

Deal found 12/14

$2,123

Best flights from St. Louis to Romania
Discover carefully curated flight deals from St. Louis to Romania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

Thu 1/296:30 amSTL - CLJ

2 stops23h 10mUnited Airlines

Mon 2/26:00 amCLJ - STL

2 stops41h 29mUnited Airlines

Deal found 12/12

$542

Sun 2/111:20 amSTL - SBZ

2 stops18h 25mMultiple Airlines

Fri 2/206:00 amSBZ - STL

2 stops23h 40mMultiple Airlines

Deal found 12/13

$662

Sun 2/11:15 pmSTL - SBZ

2 stops16h 30mLufthansa

Fri 2/206:00 amSBZ - STL

2 stops26h 05mLufthansa

Deal found 12/13

$664

Sun 4/127:10 amSTL - OTP

2 stops21h 00mDelta

Tue 4/217:00 amOTP - STL

2 stops21h 31mDelta

Deal found 12/14

$699

Wed 5/610:00 pmSTL - OTP

1 stop18h 25mBritish Airways

Wed 5/278:25 amOTP - STL

1 stop19h 05mBritish Airways

Deal found 12/14

$808

Thu 1/298:05 amSTL - OTP

2 stops22h 00mUnited Airlines

Mon 2/25:55 amOTP - STL

2 stops24h 05mUnited Airlines

Deal found 12/12

$562

Sun 2/11:15 pmSTL - SBZ

2 stops16h 30mLufthansa

Sun 2/222:30 pmSBZ - STL

2 stops39h 10mLufthansa

Deal found 12/13

$673

Sun 4/1211:14 amSTL - OTP

2 stops18h 51mMultiple Airlines

Tue 4/218:25 amOTP - STL

1 stop19h 05mMultiple Airlines

Deal found 12/14

$692

Thu 2/58:30 amSTL - SBZ

2 stops21h 15mUnited Airlines

Mon 2/92:30 pmSBZ - STL

2 stops56h 59mUnited Airlines

Deal found 12/12

$697

Sun 4/123:30 pmSTL - OTP

1 stop13h 35mLufthansa

Tue 4/215:15 pmOTP - STL

1 stop28h 15mLufthansa

Deal found 12/14

$719

Wed 5/66:49 pmSTL - OTP

2 stops15h 46mMultiple Airlines

Wed 5/276:05 amOTP - STL

2 stops22h 00mMultiple Airlines

Deal found 12/14

$829

Wed 5/66:49 pmSTL - OTP

2 stops15h 46mLufthansa

Wed 5/276:05 amOTP - STL

1 stop15h 25mLufthansa

Deal found 12/14

$825

Sat 5/92:20 pmSTL - OTP

2 stops41h 00mMultiple Airlines

Sat 5/301:50 pmOTP - STL

1 stop31h 40mMultiple Airlines

Deal found 12/13

$885

Sat 1/104:49 pmSTL - SBZ

2 stops36h 56mLufthansa

Sat 1/177:00 pmSBZ - STL

2 stops36h 59mLufthansa

Deal found 12/13

$871

Fri 1/28:05 amSTL - OTP

2 stops46h 00mUnited Airlines

Thu 1/82:45 pmOTP - STL

2 stops39h 15mUnited Airlines

Deal found 12/14

$1,237

Sat 1/1011:22 amSTL - SBZ

2 stops20h 03mMultiple Airlines

Sat 1/177:00 pmSBZ - STL

3 stops30h 43mMultiple Airlines

Deal found 12/13

$1,207

Sun 2/11:15 pmSTL - SBZ

2 stops16h 30mMultiple Airlines

Sun 2/222:30 pmSBZ - STL

3 stops31h 59mMultiple Airlines

Deal found 12/13

$1,220

Fri 1/23:50 pmSTL - OTP

1 stop14h 20mMultiple Airlines

Thu 1/86:55 amOTP - STL

2 stops25h 04mMultiple Airlines

Deal found 12/14

$1,330

Sun 2/16:40 pmSTL - SBZ

2 stops39h 35mUnited Airlines

Fri 2/202:30 pmSBZ - STL

3 stops39h 44mUnited Airlines

Deal found 12/13

$5,120

Last-minute flights from St. Louis to Romania
Discover last-minute flight deals from St. Louis to Romania. Data last updated December 15, 2025 and is based on user searches.

Tue 12/236:35 pmSTL - OTP

2 stops45h 20mLufthansa

Sun 12/285:55 amOTP - STL

1 stop16h 00mLufthansa

Deal found 12/13

$1,799

Tue 12/234:05 pmSTL - OTP

2 stops47h 50mMultiple Airlines

Sun 12/286:55 amOTP - STL

3 stops22h 48mMultiple Airlines

Deal found 12/14

$1,985

Fri 1/28:05 amSTL - OTP

2 stops46h 00mUnited Airlines

Thu 1/82:45 pmOTP - STL

2 stops39h 15mUnited Airlines

Deal found 12/14

$1,237

Fri 1/23:50 pmSTL - OTP

1 stop14h 20mMultiple Airlines

Thu 1/86:55 amOTP - STL

2 stops25h 04mMultiple Airlines

Deal found 12/14

$1,330

Fri 1/26:35 pmSTL - OTP

2 stops33h 45mLufthansa

Thu 1/82:45 pmOTP - STL

1 stop31h 10mLufthansa

Deal found 12/14

$1,339

Sat 1/104:49 pmSTL - SBZ

2 stops36h 56mLufthansa

Sat 1/177:00 pmSBZ - STL

2 stops36h 59mLufthansa

Deal found 12/13

$871

Sat 1/1011:22 amSTL - SBZ

2 stops20h 03mMultiple Airlines

Sat 1/177:00 pmSBZ - STL

3 stops30h 43mMultiple Airlines

Deal found 12/13

$1,207

Thu 1/296:30 amSTL - CLJ

2 stops23h 10mUnited Airlines

Mon 2/26:00 amCLJ - STL

2 stops41h 29mUnited Airlines

Deal found 12/12

$542

Thu 1/298:05 amSTL - OTP

2 stops22h 00mUnited Airlines

Mon 2/25:55 amOTP - STL

2 stops24h 05mUnited Airlines

Deal found 12/12

$562

One-way flights from St. Louis to Romania
Search for one-way flight options from St. Louis to Romania. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Fri 5/110:00 pmSTL - OTP

1 stop17h 50mBritish Airways

Deal found 12/14

$532

Fri 5/16:30 amSTL - OTP

3 stops22h 35mUnited Airlines

Deal found 12/13

$3,290

Find flight deals from St. Louis to Romania

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$542 (United Airlines)
One-way from	$532 (Cheapflightsfares)
Popular in	June
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. 21% potential increase in price ($260 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

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCluj Napoca

STL - CLJ

STLCLJ

Lambert-St Louis

Thu 1/29

6:30 am-1:40 pm

2 stops23h 10m

Cluj Napoca

Mon 2/2

6:00 am-3:29 pm

2 stops41h 29m

$542

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Thu 1/29

8:05 am-2:05 pm

2 stops22h 00m

Bucharest Otopeni Intl

Mon 2/2

5:55 am-10:00 pm

2 stops24h 05m

$562

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Sun 2/1

11:20 am-1:45 pm

2 stops18h 25m

Sibiu

Fri 2/20

6:00 am-9:40 pm

2 stops23h 40m

$662

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Sun 2/1

1:15 pm-1:45 pm

2 stops16h 30m

Sibiu

Fri 2/20

6:00 am-12:05 am

2 stops26h 05m

$664

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Sun 2/1

1:15 pm-1:45 pm

2 stops16h 30m

Sibiu

Sun 2/22

2:30 pm-9:40 pm

2 stops39h 10m

$673

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/12

11:14 am-2:05 pm

2 stops18h 51m

Bucharest Otopeni Intl

Tue 4/21

8:25 am-7:30 pm

1 stop19h 05m

$692

St. LouisSibiu

STL - SBZ

STLSBZ

Lambert-St Louis

Thu 2/5

8:30 am-1:45 pm

2 stops21h 15m

Sibiu

Mon 2/9

2:30 pm-3:29 pm

2 stops56h 59m

$697

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/12

7:10 am-12:10 pm

2 stops21h 00m

Bucharest Otopeni Intl

Tue 4/21

7:00 am-8:31 pm

2 stops21h 31m

$699

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 4/12

3:30 pm-1:05 pm

1 stop13h 35m

Bucharest Otopeni Intl

Tue 4/21

5:15 pm-1:30 pm

1 stop28h 15m

$719

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 5/6

10:00 pm-12:25 am

1 stop18h 25m

Bucharest Otopeni Intl

Wed 5/27

8:25 am-7:30 pm

1 stop19h 05m

$808

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 21 results

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?

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

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

8,010 reviews

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

8,010 reviews

Delta

7.9

Good

8,010 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,094 reviews

Delta

7.9

Good

8,010 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Air Canada

7.1

Good

10,527 reviews

Delta

7.9

Good

8,010 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Lufthansa

6.8

Okay

7,631 reviews

Delta

7.9

Good

8,010 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

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 16h 30m. 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 - Sibiu and Lambert-St Louis - Cluj Napoca.
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

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Complete your trip

Romania car rentals

Bucharest Otopeni Intl Airport car rentals

Iasi Airport car rentals

Timisoara Airport car rentals

Craiova Airport car rentals

Bacau Airport car rentals

Constanţa Mihail Kogalniceanu Airport car rentals

Tirgu Mures Airport car rentals

Bucharest car rentals

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Sibiu car rentals

Cluj Napoca car rentals

Top 2 airlines flying from St. Louis to Romania

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$784	Average$960	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$800	Average$1,160	FlexibilityNo cancel fee	On-time76%

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$532+ 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.

Find cheap flights from St. Louis to Romania with Cheapflights

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Cheap flight deals from St. Louis to Romania

Cheapest flights from St. Louis to RomaniaExplore 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 15, 2025.

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 15, 2025.

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 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Romania that are best for you.

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.

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 15, 2025.

Reviews of airlines servicing Romania

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.

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?

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

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

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

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

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

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.

Top 2 airlines flying from St. Louis to Romania

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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 15, 2025.