STL - OTP

$487 Find Cheap Flights from St. Louis to Bucharest

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Bucharest departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Bucharest, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Bucharest, as well as popular online travel agencies
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Cheap Flight Deals from St. Louis to Bucharest (STL-OTP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Bucharest that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from St. Louis to Bucharest

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Bucharest.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:30 pm - 1:15 pmSTL-OTP
13h 45m1 stop
6:00 am - 2:45 pmOTP-STL
16h 45m2 stops
$806United Airlines
Find Deal
Wed, Apr 2 - Sun, Apr 13
5:35 pm - 6:35 pmSTL-OTP
17h 00m2 stops
6:00 am - 2:45 pmOTP-STL
16h 45m2 stops
$809United Airlines
Find Deal
Wed, Apr 2 - Sun, Apr 13
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
6:00 am - 1:30 pmOTP-STL
15h 30m1 stop
$930Lufthansa
Find Deal
Wed, Apr 9 - Wed, May 28
10:17 am - 2:30 pmSTL-OTP
20h 13m2 stops
8:25 am - 9:52 pmOTP-STL
21h 27m2 stops
$934British Airways
Find Deal
Wed, Apr 9 - Wed, May 28
3:30 pm - 1:15 pmSTL-OTP
13h 45m1 stop
6:35 am - 9:25 pmOTP-STL
22h 50m2 stops
Wed, Apr 9 - Wed, May 28
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
6:00 am - 8:01 pmOTP-STL
22h 01m2 stops
$949United Airlines
Find Deal
Wed, Apr 9 - Wed, May 28
9:39 am - 6:35 pmSTL-OTP
24h 56m2 stops
6:00 am - 8:01 pmOTP-STL
22h 01m2 stops
$952United Airlines
Find Deal
Wed, Apr 9 - Wed, May 28
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
6:00 am - 1:30 pmOTP-STL
15h 30m1 stop
$954Lufthansa
Find Deal
Wed, Apr 9 - Wed, May 28
3:30 pm - 5:55 pmSTL-OTP
18h 25m1 stop
6:00 am - 1:30 pmOTP-STL
15h 30m1 stop
$1,024Lufthansa
Find Deal
Wed, Apr 2 - Sun, Apr 13
3:30 pm - 11:30 pmSTL-OTP
24h 00m2 stops
6:05 am - 9:48 pmOTP-STL
23h 43m3 stops
$1,058
Find Deal
Wed, Apr 2 - Sun, Apr 13

Flights from St. Louis to Bucharest - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Bucharest to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from St. Louis to Bucharest?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest round-trip tickets from St. Louis to Bucharest were found on United Airlines ($806) and Lufthansa ($930).

Good to know

High season

September

Cheapest flight

$487
Most popular time to fly and prices are also 14% lower on average.
Flight from St. Louis to Bucharest

When to book flights from St. Louis to Bucharest

Are your dates flexible? Find out the best times to travel from St. Louis to Bucharest based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Bucharest flights

  • What is the cheapest flight from St. Louis to Bucharest Otopeni Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Bucharest Otopeni Intl Airport was $487 for a one-way ticket and $806 for a round-trip.

  • Do I need a passport to fly between St. Louis and Bucharest?

    Yes, you’ll need a passport to travel to Bucharest from St. Louis.

  • Which airports will I be using when flying from St. Louis to Bucharest?

    St. Louis and Bucharest are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Bucharest Otopeni Intl.

  • Which aircraft models fly most regularly from St. Louis to Bucharest?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Bucharest?

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Bucharest, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Bucharest, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from St. Louis to Bucharest are United Airlines and Lufthansa. With an average price for the route of $961 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,036 and an overall rating of 6.7.

  • How does KAYAK find such low prices on flights from St. Louis to Bucharest?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Bucharest.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Bucharest?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bucharest from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Bucharest?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bucharest with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and OTP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Bucharest?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bucharest from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from St. Louis to Bucharest

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Bucharest. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Bucharest? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8766 reviews
7.1Entertainment
6.7Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

4.0 OkayDonald, Feb 2025EGE - IAH
Read more United Airlines reviews

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Liked nothing. As per previous segment it was delay delay delay.

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Our seats were all the way in back of the plane,

Food choices were very limited. Taste of the dishes was average.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

Lufthansa charged me $280 to take skiiis when in the US the boot bag and skiis are one check-in bag. This was not advertised and a real shock at the airport. They only took the boot bag as a check-in item. The seats have been squeezed together like any economy airline and legroom is not as good as it used to be. Otherwise, the flight was fine and staff was helpful for making my connection.

On board Entertainment and crew services were absolutely trash! Neither me, nor any of my 40 family/friends members are flying Lufthansa again!

Eet late informed about delay of more rhan four houts

After living in Europe for five years and flying with Lufthansa and KLM airlines, I’ve realized that United Airlines is now a budget carrier. The flight attendant are not friendly. The seats are not comfortable. And everything comes at a cost. I will be flying with KLM and Skyteam like Delta to the US going forward no doubt. United Airlines is not what it once was:

My schedule flight was rebooking and changed to Chicago, then I did not used the flight from Dulles to Savannah

This is my second time to fly this year with Lufthansa and both times they dropped the ball. My ticket was very cheap and l would not be honest if l said that l had some high expectations for that price. Fly delay 6 hours. Screen in fey seats around me didn’t work. Food for dinner was ok but breakfast was so poor. We had connection in Frankfurt for Vienna. Because of delay they gave us fly with 30 min layover time. We got to Vienna but our baggage was late of course. Long story short it took us almost 24 hours to get to the final destination. Very bad experience

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

Information on your arrival and departure airports

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