STL - OTP

$472 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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Search hundreds of travel sites at once for deals on flights to Bucharest

 
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 Lambert-St Louis to Otopeni Intl (STL-OTP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Lambert-St Louis to Otopeni Intl 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
3:45 pm - 1:55 pmSTL-OTP
14h 10m1 stop
6:05 am - 3:06 pmOTP-STL
40h 01m2 stops
Wed, Mar 5 - Wed, Mar 12
3:45 pm - 1:55 pmSTL-OTP
14h 10m1 stop
6:05 am - 2:55 pmOTP-STL
15h 50m1 stop
$608Lufthansa
Find Deal
Wed, Mar 5 - Wed, Mar 12
3:32 pm - 3:45 pmSTL-OTP
16h 13m2 stops
6:05 am - 3:06 pmOTP-STL
40h 01m2 stops
Wed, Mar 5 - Wed, Mar 12
3:45 pm - 1:55 pmSTL-OTP
14h 10m1 stop
6:05 am - 3:06 pmOTP-STL
40h 01m2 stops
$614United Airlines
Find Deal
Wed, Mar 5 - Wed, Mar 12
3:50 pm - 6:25 pmSTL-OTP
18h 35m2 stops
6:00 am - 11:02 amOTP-STL
36h 02m3 stops
$821Air Canada
Find Deal
Wed, Mar 5 - Wed, Mar 12
11:55 am - 2:30 pmSTL-OTP
18h 35m2 stops
8:25 am - 11:24 pmOTP-STL
22h 59m2 stops
$878British Airways
Find Deal
Wed, Apr 2 - Sun, Apr 13
3:50 pm - 6:25 pmSTL-OTP
18h 35m2 stops
6:00 am - 11:02 amOTP-STL
36h 02m3 stops
$922Air Canada
Find Deal
Wed, Mar 5 - Wed, Mar 12
3:40 pm - 3:20 pmSTL-OTP
15h 40m2 stops
6:00 am - 8:01 pmOTP-STL
22h 01m2 stops
$1,008United Airlines
Find Deal
Wed, Apr 9 - Wed, May 28
3:40 pm - 1:15 amSTL-OTP
25h 35m2 stops
2:15 am - 9:04 pmOTP-STL
26h 49m2 stops
$2,120Emirates
Find Deal
Wed, Apr 9 - Tue, May 27
3:40 pm - 1:15 amSTL-OTP
25h 35m2 stops
2:15 am - 8:04 pmOTP-STL
25h 49m2 stops
$3,983Emirates
Find Deal
Wed, Apr 2 - Sat, Apr 12

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 Lufthansa ($608) and United Airlines ($614).

Good to know

High season

May

Cheapest flight

$472
Most popular time to fly with an average 6% increase in price.
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 $472 for a one-way ticket and $607 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 $1,002 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 $1,234 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 3 airlines serving 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 8984 reviews
7.1Entertainment
6.7Food
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

Maybe add a seat trade app for flyers that didn’t get seats together

10.0 ExcellentScott, Jan 2025EWR - MIA
Read more United Airlines reviews

Maybe add a seat trade app for flyers that didn’t get seats together

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

I liked all the informational texts. I always knew where to go and when .

Boarding is very confusing. They have Line 1 and Line 2 and many many Boarding groups. Everyone lines up under those two lines long before they call zones. If you have a higher zone 2 like I did due to a Premium Plus ticket, it’s very awkward having to ask each person which zone they have. Extremely chaotic process. On board the flight attendants had no charisma whatsoever, even to us paying extra for an upgraded cabin. I asked for a chamomile tea after dinner (as no coffee or tea was even offered) and the FÃ said they didn’t have even though listed on the drink menu. Also, the mid flight service was entirely skipped which was a soup and sandwich combo. Supposedly had a variety of snacks mid flight too but those never materialized either. A few times I walked Back there, not a single flight attendant acknowledged me as they were all deep into their iPhones. I simply Wanted a glass of water since ZERO water runs were made on this 9hr 30 min flight.

Liked the hospitality . The ight took us 6 hrs to get from fort myers to ewr.

Cleanliness of seats, trays, storage pockets need more attention, but everything else was good.

A great airline, no complaints at all. My experience with Cheap Tickets was very disappointing however. Two hours after purchasing the flight they called to tell me that the ticket price had gone up. I’ve never heard of such a thing. That is called false advertising; I will never use this ticketing service again and will warn all friends to never use it.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

Good overall flight. Excellent crew. Food options could be improved.

Vegan food tasted good. Restroom could be kept cleaner. Seat tray table was a bit tilted so food tray kept sliding down a bit. Flight crew can be a little more friendly, caring and approachable. Their faces lacked smiles and tone was stern.

Flight was delayed then we had to redirect for medical emergency during which time we had no information on what is the plan. The connecting flight was also delayed.

Professional & courteous cabin crew. Food was very good even in economy class

7 stars hospitality and an excellent service by the Turkish Airline entire team. Somehow, our membership numbers for mileage points were not indicated on our boarding passes issued at O’Hare Airport by the Turkish Airlines check in desk. During transit in Istanbul, I brought to attention of customer service Turkish Airlines. Please have our mileage points posted to our membership account from O’Hare Chicago to Lahore for both my wife Kaukab Shirazi Thank you

Terrible boarding experience, with an incomprehensible assignment of priorities. “Fast track” was the slowest. Poor system planning.

Terrible boarding process, no proper line maintained even for business class, crews are not very attentive, business class food quality / variety / quantity have gone down, everything has become cheap.

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

Professional crew and staff, very organized boarding and on time flights, baggage handling. Indian vegetarian meals were good, though could improve by offering Indian bread (naan/paratha/roti) as well. Very helpful pre flight emails with details of onboard experience 👍 Above average selection of movies. Consider offering more movies with subtitles and ratings indicators (e.g., IMDB scores).

Terrible experience. Should be a short simple flight from San Francisco to Palm Springs. Disgusting insult that United Air doesn’t have a cabin crew ready to receive a plane that’s already an hour plus late in departure. Lots of misinformation along the way from cockpit and crew. Definitely unimpressed with both union and management.

Seats were extremely hard and uncomfortable. as well as very narrow even though I paid an extra $230 for upgraded preferred seats. Very disappointed in the downtrend of Lufthansa and United Airlines.

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

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