$756 Find Cheap Flights from Southeast Europe to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 3/5. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$756
United Airlines
Thu 3/5Thu 9/17
CLJ - STL • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Southeast Europe to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Southeast Europe to St. Louis 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Southeast Europe to St. Louis

Thu, Mar 5 - Thu, Sep 17
United Airlines Logo
2:25 pm - 11:51 pm
CLJ
-
STL
17h 26m
2 stops
United Airlines Logo
5:20 am - 5:25 pm
STL
-
CLJ
28h 05m
2 stops
$756United Airlines
Wed, Feb 18 - Sun, Feb 22
Delta Logo
6:00 am - 11:23 pm
OTP
-
STL
25h 23m
2 stops
Delta Logo
6:56 pm - 10:50 pm
STL
-
OTP
19h 54m
2 stops
$775Delta
Thu, Mar 5 - Thu, Sep 24
United Airlines Logo
2:25 pm - 11:51 pm
CLJ
-
STL
17h 26m
2 stops
United Airlines Logo
5:20 am - 1:10 pm
STL
-
CLJ
47h 50m
2 stops
$814United Airlines
Wed, Feb 18 - Sun, Feb 22
British Airways Logo
8:05 am - 9:12 pm
OTP
-
STL
21h 07m
2 stops
British Airways Logo
2:19 pm - 2:55 pm
STL
-
OTP
16h 36m
2 stops
$840British Airways
Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
9:45 am - 11:59 pm
ZAG
-
STL
21h 14m
2 stops
Lufthansa Logo
7:00 pm - 10:15 pm
STL
-
ZAG
21h 15m
2 stops
$906Lufthansa
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
12:30 pm - 11:59 pm
SKP
-
STL
42h 29m
2 stops
Multiple Airlines Logo
4:50 pm - 3:25 pm
STL
-
SKP
16h 35m
1 stop
$915Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
2:35 pm - 10:59 pm
ZAG
-
STL
15h 24m
2 stops
United Airlines Logo
1:14 pm - 2:00 pm
STL
-
ZAG
18h 46m
2 stops
$918United Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
12:30 pm - 11:59 pm
SKP
-
STL
42h 29m
2 stops
Multiple Airlines Logo
1:14 pm - 3:25 pm
STL
-
SKP
20h 11m
2 stops
$937Multiple Airlines
Wed, Apr 8 - Wed, Jun 24
Lufthansa Logo
5:55 am - 1:25 pm
ZAG
-
STL
14h 30m
1 stop
Lufthansa Logo
8:25 am - 11:30 am
STL
-
ZAG
20h 05m
2 stops
$939Lufthansa
Wed, Apr 8 - Wed, Jun 24
American Airlines Logo
1:00 pm - 8:24 am
ZAG
-
STL
26h 24m
3 stops
American Airlines Logo
7:50 pm - 12:45 pm
STL
-
ZAG
33h 55m
2 stops
$1,181American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$756
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Cluj Napoca to St. Louis

FAQs for booking flights from Southeast Europe to St. Louis

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

    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 Southeast Europe to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Southeast Europe 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 Southeast Europe to St. Louis?

    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 St. Louis with an airline and back to Southeast Europe with another airline.

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

    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 St. Louis from Southeast Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Southeast Europe to St. Louis

 
Need help choosing which airline to fly with from Southeast Europe to St. Louis? 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.
7.7
KLMOverall score based on 1448 reviews
7.3Food
7.6Comfort
8.4Crew
7.1Entertainment
7.8Boarding
Airline reviews

Empty seats next to me - wish it had been for a longer flight!!

8.0 ExcellentAnonymous, Feb 2026
AMS - NCL
Read more KLM reviews

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

The attendant on board was amazing. She should be doing business/first international long haul.

The boarding was cumbersome. The staff was not aligned. They called group 1 but then the agent said no. Then they called group 1 again but still would not board us. Then they called group 2 and they all came up and still hadn’t started boarding. Then someone came from the plane and said why is no one coming? And the agent said bc i thought not yet and she said I said over the walkie talkie to send the passengers down? What was not clear about that? Also, onboard, the crew gave announcements very ironic/authoritative, and in first class they gave us a cheesebox. My expectations based on competition airlines, is a warm meal. A little underwhelming.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

Lufthansa flight LH04414 from Munich to Washington DC, was fine. Efficient and safe!

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

Bumpy ride, not Lufthansa‘s fault. Crew managed a situation over a back rest to far down well. It was two iles behind me. The person putting the seat down, against the other person’s knees, was quite rude and belligerent and needed to be told in a no nonsense matter to stopp. Male flight attendant did good job.

Patrick and the whole crew were amazing! Hope to have this team for all my European trips.

This review is based on 2 things: 1. The lack of hygiene on the plane. 2. William - the head flight attendant. The lack of cleanliness on the plane upon arrival was appalling. Being given a sanitizing wipe upon boarding of the plane is shocking when you consider the cost of a business class flight. UA expects me to do their job and clean all the bread, food and debris left from previous guests. Does this sound normal to you. The seat, the food table and the sides were full of crumbs, chocolate and dirt. When I told the flight attendant they just gave me more wipes so I could clean it myself. Secondly, William the business cabin head flight attendant was so busy flirting with a couple in the front that his attention to the other guests was minimal. He continuously asked them if they were ok or if they needed anything and it didn’t matter if the rest of us needed anything. And if you are the lead attendant shouldn’t you be checking if the bathrooms in business class are clean and needing toilet paper. There were 2 bathrooms in business. Halfway through the flight the first bathroom was closed and the second bathroom was dirty and had no toilet paper one hour and a half before the flight landed. He needs additional training on prioritizing things. He should care less about flirting and more about his work

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

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

Information on the airport you'll fly into in St. Louis