$384 Find Cheap Flights from St. Louis to Southeast Europe

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 Southeast Europe departing on 11/18. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Europe

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Southeast Europe.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Southeast Europe.
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Flight Deals

Cheap Flights from St. Louis to Southeast Europe

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Athens
Athens1 stop$487
Tirana
Tirana2 stops$554
Belgrade
Belgrade2 stops$578
Zagreb
Zagreb2 stops$567
Split
Split2 stops$656
Sofia
Sofia2 stops$645
Dubrovnik
Dubrovnik2 stops$656
Thera
Thera2 stops$880
Sarajevo
Sarajevo3 stops$561
Thessaloniki
Thessaloniki2 stops$559
Heraklion
Heraklion1 stop$739
Skopje
Skopje2 stops$550
Pristina
Pristina2 stops$523
Cluj Napoca
Cluj Napoca2 stops$644
Athens
Athens1 stop$487
Tirana
Tirana2 stops$554
Belgrade
Belgrade2 stops$578
Zagreb
Zagreb2 stops$567
Split
Split2 stops$656
Sofia
Sofia2 stops$645
Dubrovnik
Dubrovnik2 stops$656
Thera
Thera2 stops$880
Sarajevo
Sarajevo3 stops$561
Thessaloniki
Thessaloniki2 stops$559
Heraklion
Heraklion1 stop$739
Skopje
Skopje2 stops$550
Pristina
Pristina2 stops$523
Cluj Napoca
Cluj Napoca2 stops$644

Book Cheap St. Louis to Southeast Europe Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Southeast Europe 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 St. Louis to Southeast Europe

Mon, Nov 3 - Wed, Nov 19
Multiple Airlines Logo
11:37 am - 10:05 amSTL-ATH
14h 28m1 stop
Multiple Airlines Logo
6:15 am - 1:55 pmATH-STL
15h 40m1 stop
$487Multiple Airlines
Find Deal
Mon, Nov 3 - Wed, Nov 19
Multiple Airlines Logo
6:52 am - 11:00 amSTL-ATH
20h 08m2 stops
Multiple Airlines Logo
12:50 pm - 11:07 pmATH-STL
18h 17m2 stops
$490Multiple Airlines
Find Deal
Tue, Dec 2 - Fri, Dec 12
Lufthansa Logo
6:42 pm - 1:40 amSTL-ATH
22h 58m2 stops
Lufthansa Logo
6:05 am - 1:55 pmATH-STL
15h 50m1 stop
$493Lufthansa
Find Deal
Wed, Nov 5 - Thu, Nov 13
United Airlines Logo
11:37 am - 10:05 amSTL-ATH
14h 28m1 stop
United Airlines Logo
6:35 am - 5:39 pmATH-STL
19h 04m2 stops
$494United Airlines
Find Deal
Tue, Dec 2 - Fri, Dec 12
Lufthansa Logo
6:42 pm - 1:40 amSTL-ATH
22h 58m2 stops
Lufthansa Logo
6:05 am - 11:42 pmATH-STL
25h 37m2 stops
$498Lufthansa
Find Deal
Mon, Nov 3 - Thu, Nov 13
United Airlines Logo
5:24 pm - 6:00 pmSTL-ATH
16h 36m2 stops
United Airlines Logo
6:35 am - 5:39 pmATH-STL
19h 04m2 stops
$500United Airlines
Find Deal
Wed, Jan 21 - Fri, Feb 6
Air Canada Logo
4:05 pm - 4:40 pmSTL-ATH
16h 35m2 stops
Air Canada Logo
6:05 am - 5:43 pmATH-STL
19h 38m3 stops
$519Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
6:39 am - 9:55 amSTL-ATH
19h 16m2 stops
Delta Logo
12:50 pm - 9:50 amATH-STL
29h 00m2 stops
$523Delta
Find Deal
Wed, Jan 21 - Wed, Feb 11
Air Canada Logo
4:05 pm - 9:00 amSTL-TIA
33h 55m2 stops
Air Canada Logo
6:05 am - 3:29 pmTIA-STL
40h 24m2 stops
$554Air Canada
Find Deal
Tue, Mar 3 - Sun, Mar 8
Delta Logo
6:45 am - 1:00 pmSTL-ATH
22h 15m2 stops
Delta Logo
3:25 am - 11:40 pmATH-STL
27h 15m2 stops
$571Delta
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Southeast Europe flights

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

Can I save money by flying with a layover from St. Louis to Southeast Europe?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $351, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to Southeast Europe?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Southeast Europe, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Southeast Europe is January, when tickets cost $734 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,396 and $1,346 respectively.

What’s the cheapest day of the week to fly from St. Louis to Southeast Europe?

The average price of all round-trip flights from St. Louis to Southeast Europe clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Southeast Europe on a Sunday and more expensive on a Friday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

How far in advance should I book a flight from St. Louis to Southeast Europe?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Southeast Europe, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Southeast Europe, you should book around 2 weeks before departure, which saves you about 39% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$384
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from St. Louis to Athens

FAQs - booking Southeast Europe flights

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

    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 Southeast Europe.

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

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

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

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

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

  • What is the cheapest time of day to fly to Southeast Europe?

    The cheapest time of day to fly to Southeast Europe is generally in the evening, when round-trip flights cost $1,240 on average. Morning departures are around 9% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Europe is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,454.

Reviews of the top 5 airlines serving from St. Louis to Southeast Europe

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Southeast Europe. 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 Southeast Europe? 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.
7.9
DeltaOverall score based on 7978 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

6.0 GoodDavid, Oct 2025JFK - KEF
Read more Delta reviews

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

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.

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.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Flight was good but there are way to many announcements for credit cards etc.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

For goodness sake, board from the back of the plane to the front and assign overhead space. It would fix everything. Seriously.

Elderly female flight attendant was not customer friendly. There were only about 12 people on a regional jet that had about 60 seats. There were 8 exit row seats and none of them were taken. We attempted to sit in those seats and the flight attendant gave the standard " you didn't pay for those" so she would not allow us to move. What harm would that have caused ? They assigned seats to 5 of the 12 people in 2 rows, row 20 and 21. A simple friendly customer experience gesture of allowing us to sit in exit rows would have gone a long way in me having a very favorable impression on Air Canada. After that I have very poor impression of Air Canada and will not fly with them when I can avoid it.

It was a smooth flight both in the sky and landing!

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Everything went smoothly and the staff was very kind. I’m glad I purchased the extra leg room for my long flight; it was totally worth it. We were served 2 meals for a 9 hour flight which I was not expecting and they were very tasty. I appreciated them being vegetarian. Customs line in Munich was long; I had a choice to have a 1 hr 40 min layover or 2 hr 40 min layover; I took the longer layover which I was thankful for because my flight was delayed 30 minutes and there’s a good chance I would have missed my connecting flight. This was my very first international flight and I would fly Discover again without hesitation. Thank you for taking good care of me!

I liked everything BUT the temperature. It was freezing and now I am sick.

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