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

Currently priced at $636, Air Canada will fly you from St. Louis to Bucharest and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $640 and $650, respectively.

What are the cheapest airlines to fly from St. Louis to Bucharest one-way?

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $448. Air Canada flights start at $458 while deals on United Airlines start at $515 one-way.

What is the cheapest month to book a flight from St. Louis to Bucharest?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Bucharest (average of $604). Flying from St. Louis to Bucharest in June is currently the most expensive (average of $1,134). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from St. Louis to Bucharest?

Travelers seeking maximum savings on their St. Louis to Bucharest flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

If weather is an important factor for your trip to Bucharest, 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 is the cheapest day to fly round-trip from St. Louis to Bucharest?

Departing on a Friday is a good option for securing a great price. You can expect to save up to 81% when planning your travel around this day of the week.

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.

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.

$297+ Flights from St. Louis to Bucharest

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Cheap flight deals from St. Louis to Bucharest

Round-trip from	$582 (Gotogate)
One-way from	$297 (Kiwi.com)

From Lambert-St Louis to Bucharest (BUH)

Search Deals

One-way flight from Lambert-St Louis to Bucharest (BUH)

Search Deals

Find 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 June 30, 2025.

Mon 11/104:05 pmSTL - OTP

2 stops15h 45mMultiple Airlines

Wed 11/265:55 amOTP - STL

2 stops43h 19mMultiple Airlines

Deal found 6/29

$582

Tue 8/261:30 pmSTL - OTP

2 stops21h 05mAir Canada

Wed 9/36:00 amOTP - STL

2 stops21h 57mAir Canada

Deal found 6/30

$636

Sun 9/1411:30 amSTL - OTP

2 stops16h 25mUnited Airlines

Wed 9/246:00 amOTP - STL

2 stops21h 57mUnited Airlines

Deal found 6/28

$640

Tue 10/712:25 pmSTL - OTP

2 stops15h 30mLufthansa

Thu 10/166:00 amOTP - STL

2 stops17h 44mLufthansa

Deal found 6/29

$650

Mon 10/68:01 pmSTL - OTP

2 stops35h 24mBritish Airways

Thu 10/168:25 amOTP - STL

2 stops19h 58mBritish Airways

Deal found 6/29

$654

Tue 10/73:30 pmSTL - OTP

2 stops20h 30mScandinavian Airlines

Sun 10/199:25 pmOTP - STL

2 stops34h 14mScandinavian Airlines

Deal found 6/29

$663

Best flights from St. Louis to Bucharest
Discover carefully curated flight deals from St. Louis to Bucharest that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 30, 2025.

Mon 11/104:05 pmSTL - OTP

2 stops15h 45mMultiple Airlines

Wed 11/265:55 amOTP - STL

2 stops43h 19mMultiple Airlines

Deal found 6/29

$582

Tue 8/261:30 pmSTL - OTP

2 stops21h 05mAir Canada

Wed 9/36:00 amOTP - STL

2 stops21h 57mAir Canada

Deal found 6/30

$636

Sun 9/1411:30 amSTL - OTP

2 stops16h 25mUnited Airlines

Wed 9/246:00 amOTP - STL

2 stops21h 57mUnited Airlines

Deal found 6/28

$640

Tue 10/712:25 pmSTL - OTP

2 stops15h 30mLufthansa

Thu 10/166:00 amOTP - STL

2 stops17h 44mLufthansa

Deal found 6/29

$650

Mon 10/68:01 pmSTL - OTP

2 stops35h 24mBritish Airways

Thu 10/168:25 amOTP - STL

2 stops19h 58mBritish Airways

Deal found 6/29

$654

Tue 10/73:30 pmSTL - OTP

2 stops20h 30mScandinavian Airlines

Sun 10/199:25 pmOTP - STL

2 stops34h 14mScandinavian Airlines

Deal found 6/29

$663

Last-minute flights from St. Louis to Bucharest
Discover last-minute flight deals from St. Louis to Bucharest. Data last updated June 30, 2025 and is based on user searches.

Wed 7/28:00 amSTL - OTP

2 stops22h 35mMultiple Airlines

Fri 7/46:35 amOTP - STL

2 stops19h 32mMultiple Airlines

Deal found 6/28

$1,734

Wed 7/23:30 pmSTL - OTP

1 stop18h 25mLufthansa

Fri 7/46:00 amOTP - STL

1 stop15h 30mLufthansa

Deal found 6/28

$2,680

One-way flights from St. Louis to Bucharest
Search for one-way flight options from St. Louis to Bucharest. Find affordable one-way fares based on user searches. Data last updated June 30, 2025.

Mon 9/12:27 pmSTL - OTP

3 stops26h 08mMultiple Airlines

Deal found 6/28

$297

Wed 9/37:23 amSTL - OTP

2 stops23h 07mBritish Airways

Deal found 6/28

$448

Mon 9/11:30 pmSTL - OTP

2 stops41h 50mAir Canada

Deal found 6/28

$458

Fri 9/51:39 pmSTL - OTP

2 stops27h 21mUnited Airlines

Deal found 6/28

$515

Sun 8/313:30 pmSTL - OTP

1 stop17h 20mLufthansa

Deal found 6/28

$580

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 11/10

4:05 pm-3:50 pm

2 stops15h 45m

Bucharest Otopeni Intl

Wed 11/26

5:55 am-5:14 pm

2 stops43h 19m

$582

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 8/26

1:30 pm-6:35 pm

2 stops21h 05m

Bucharest Otopeni Intl

Wed 9/3

6:00 am-7:57 pm

2 stops21h 57m

$636

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Sun 9/14

11:30 am-11:55 am

2 stops16h 25m

Bucharest Otopeni Intl

Wed 9/24

6:00 am-7:57 pm

2 stops21h 57m

$640

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 10/7

12:25 pm-11:55 am

2 stops15h 30m

Bucharest Otopeni Intl

Thu 10/16

6:00 am-3:44 pm

2 stops17h 44m

$650

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 10/6

8:01 pm-3:25 pm

2 stops35h 24m

Bucharest Otopeni Intl

Thu 10/16

8:25 am-8:23 pm

2 stops19h 58m

$654

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Tue 10/7

3:30 pm-8:00 pm

2 stops20h 30m

Bucharest Otopeni Intl

Sun 10/19

9:25 pm-11:39 pm

2 stops34h 14m

$663

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/1

2:27 pm-12:35 am

3 stops26h 08m

$297

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Wed 9/3

7:23 am-2:30 pm

2 stops23h 07m

$448

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Mon 9/1

1:30 pm-3:20 pm

2 stops41h 50m

$458

St. LouisBucharest

STL - OTP

STLOTP

Lambert-St Louis

Fri 9/5

3:30 pm-12:55 pm

1 stop13h 25m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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

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

When flying from St. Louis to Bucharest, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the afternoon.

Reviews of airlines servicing Bucharest

Read reviews from past customers who have flown United Airlines, Scandinavian Airlines, and Air Canada 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.

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,852 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Scandinavian Airlines

7.3

Good

1,413 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Air Canada

7.1

Good

9,657 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,201 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

British Airways

6.6

Okay

7,081 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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.
What are the cheapest airlines flying from St. Louis to Bucharest round-trip?
Currently priced at $636, Air Canada will fly you from St. Louis to Bucharest and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $640 and $650, respectively.
What are the cheapest airlines to fly from St. Louis to Bucharest one-way?
To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $448. Air Canada flights start at $458 while deals on United Airlines start at $515 one-way.
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.
What is the cheapest month to book a flight from St. Louis to Bucharest?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Bucharest (average of $604). Flying from St. Louis to Bucharest in June is currently the most expensive (average of $1,134). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Otopeni

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Top 2 airlines flying from St. Louis to Bucharest

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$759	Average$960	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$788	Average$1,055	FlexibilityNo cancel fee	On-time76%

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$297+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Bucharest with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Bucharest

Round-trip from

One-way from

Find flight deals from St. Louis to Bucharest

Cheapest flights from St. Louis to BucharestExplore 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 June 30, 2025.

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 June 30, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Bucharest

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

Find hourly flight availability from St. Louis to Bucharest. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

Reviews of airlines servicing Bucharest

Read reviews from past customers who have flown United Airlines, Scandinavian Airlines, and Air Canada 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.

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?

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

What are the cheapest airlines to fly from St. Louis to Bucharest one-way?

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

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

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

What is the cheapest month to book a flight from St. Louis to Bucharest?

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Bucharest

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Top 2 airlines flying from St. Louis to Bucharest

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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 June 30, 2025.