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

One-way options have recently been found by users for as low as $677 on American Airlines. Other airlines that offer cheap prices include KLM from $680 and Delta from $681 one-way.

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

Currently, August is the cheapest month in which you can book a flight from Romania to St. Louis (average of $311). Flying from Romania to St. Louis in March is currently the most expensive (average of $356). 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 time of day to fly from RO to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Romania to St. Louis as you normally would.

What airport do you fly into for flights to St. Louis from Romania?

Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Romania. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Romania to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$942+ Flights from Romania to St. Louis

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Cheap flight deals from Romania to St. Louis

Round-trip from	$896 (Delta)
One-way from	$469 (Kiwi.com)

From Romania to Lambert-St Louis

Search Deals

One-way flight from Romania to Lambert-St Louis

Search Deals

Find flight deals from Romania to St. Louis

Cheapest flights from Romania to St. Louis
Explore the most affordable flight options available from Romania to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Wed 7/27:00 amOTP - STL

2 stops21h 30mDelta

Sun 7/611:17 amSTL - OTP

2 stops22h 03mDelta

Deal found 6/17

$896

Wed 7/210:55 amOTP - STL

2 stops16h 50mMultiple Airlines

Sun 7/69:15 amSTL - OTP

3 stops24h 30mMultiple Airlines

Deal found 6/17

$1,325

Wed 7/26:05 amOTP - STL

2 stops24h 40mLufthansa

Sun 7/63:30 pmSTL - OTP

1 stop13h 45mLufthansa

Deal found 6/17

$1,385

Best flights from Romania to St. Louis
Discover carefully curated flight deals from Romania to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2025.

Wed 7/27:00 amOTP - STL

2 stops21h 30mDelta

Sun 7/611:17 amSTL - OTP

2 stops22h 03mDelta

Deal found 6/17

$896

Wed 7/210:55 amOTP - STL

2 stops16h 50mMultiple Airlines

Sun 7/69:15 amSTL - OTP

3 stops24h 30mMultiple Airlines

Deal found 6/17

$1,325

Wed 7/26:05 amOTP - STL

2 stops24h 40mLufthansa

Sun 7/63:30 pmSTL - OTP

1 stop13h 45mLufthansa

Deal found 6/17

$1,385

Last-minute flights from Romania to St. Louis
Discover last-minute flight deals from Romania to St. Louis. Data last updated June 18, 2025 and is based on user searches.

Wed 7/27:00 amOTP - STL

2 stops21h 30mDelta

Sun 7/611:17 amSTL - OTP

2 stops22h 03mDelta

Deal found 6/17

$896

Wed 7/210:55 amOTP - STL

2 stops16h 50mMultiple Airlines

Sun 7/69:15 amSTL - OTP

3 stops24h 30mMultiple Airlines

Deal found 6/17

$1,325

Wed 7/26:05 amOTP - STL

2 stops24h 40mLufthansa

Sun 7/63:30 pmSTL - OTP

1 stop13h 45mLufthansa

Deal found 6/17

$1,385

One-way flights from Romania to St. Louis
Search for one-way flight options from Romania to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 18, 2025.

Wed 9/1010:05 pmOTP - STL

3 stops47h 12mMultiple Airlines

Deal found 6/16

$469

Mon 9/88:25 amOTP - STL

2 stops33h 16mAmerican Airlines

Deal found 6/16

$677

Sat 9/68:35 amOTP - STL

2 stops22h 48mKLM

Deal found 6/16

$680

Sun 9/77:00 amOTP - STL

2 stops20h 07mDelta

Deal found 6/16

$681

Thu 9/1112:40 pmOTP - STL

3 stops41h 28mUnited Airlines

Deal found 6/16

$789

Fri 9/126:00 amOTP - STL

1 stop15h 30mLufthansa

Deal found 6/16

$792

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 7/2

7:00 am-8:30 pm

2 stops21h 30m

Lambert-St Louis

Sun 7/6

11:17 am-5:20 pm

2 stops22h 03m

$896

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 7/2

10:55 am-7:45 pm

2 stops16h 50m

Lambert-St Louis

Sun 7/6

9:15 am-5:45 pm

3 stops24h 30m

$1,325

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 7/2

6:05 am-10:45 pm

2 stops24h 40m

Lambert-St Louis

Sun 7/6

3:30 pm-1:15 pm

1 stop13h 45m

$1,385

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Wed 9/10

10:05 pm-1:17 pm

3 stops47h 12m

$469

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Mon 9/8

8:25 am-9:41 am

2 stops33h 16m

$677

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sat 9/6

8:35 am-11:23 pm

2 stops22h 48m

$680

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Sun 9/7

7:00 am-7:07 pm

2 stops20h 07m

$681

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Thu 9/11

12:40 pm-10:08 pm

3 stops41h 28m

$789

BucharestSt. Louis

OTP - STL

OTPSTL

Bucharest Otopeni Intl

Fri 9/12

6:00 am-1:30 pm

1 stop15h 30m

$792

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Romania 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 Romania to St. Louis

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,964 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,363 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,810 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Lufthansa

6.8

Okay

7,159 reviews

Delta

8.0

Very good

7,964 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to St. Louis from Romania?
Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Romania. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines to fly from Romania to St. Louis one-way?
One-way options have recently been found by users for as low as $677 on American Airlines. Other airlines that offer cheap prices include KLM from $680 and Delta from $681 one-way.
Can I find deals for flights from Romania to St. Louis that include hotel bookings?
Yes. In addition to deals on Romania to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Romania to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Romania to St. Louis.
Can I find deals for business class flights from Romania to St. Louis?
Yes. Cheapflights offers flight deals from Romania to St. Louis 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 Romania to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Romania to St. Louis (average of $311). Flying from Romania to St. Louis in March is currently the most expensive (average of $356). 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

O'Fallon

Maryland Heights

Fairview Heights

Collinsville

Eureka

St. Peters

Glencoe

Festus

Alton

Farmington

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$469+ Cheap flights from Romania to St. Louis (STL)

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Romania to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Romania to St. Louis

Keep the following information in mind while searching for Romania to St. Louis flight deals. Data was last updated June 18, 2025.

Round-trip from

One-way from

Find flight deals from Romania to St. Louis

Cheapest flights from Romania to St. LouisExplore the most affordable flight options available from Romania to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Explore the most affordable flight options available from Romania to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Romania with our price prediction graph.

Cheapflights Insights

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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Related info for your journey

Find useful and relevant information for your journey from Romania to St. Louis. 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 into for flights to St. Louis from Romania?

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

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

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

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

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

Traveling to a place near 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 Romania to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Romania to St. Louis
Explore the most affordable flight options available from Romania to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.