$167 Find Cheap Flights from St. Louis to 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 Europe departing on 1/23. 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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1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to Europe

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$575
Paris
Paris2 stops$514
Rome
Rome2 stops$435
Madrid
Madrid1 stop$429
Athens
Athens1 stop$485
Lisbon
Lisbon2 stops$483
Istanbul
Istanbul1 stop$551
Dublin
Dublin1 stop$433
Amsterdam
Amsterdam1 stop$507
Milan
Milan1 stop$459
Zurich
Zurich2 stops$467
Copenhagen
Copenhagen2 stops$548
Munich
Munich2 stops$566
Berlin
Berlin2 stops$530
Edinburgh
Edinburgh2 stops$621
Prague
Prague2 stops$654
London
London1 stop$575
Paris
Paris2 stops$514
Rome
Rome2 stops$435
Madrid
Madrid1 stop$429
Athens
Athens1 stop$485
Lisbon
Lisbon2 stops$483
Istanbul
Istanbul1 stop$551
Dublin
Dublin1 stop$433
Amsterdam
Amsterdam1 stop$507
Milan
Milan1 stop$459
Zurich
Zurich2 stops$467
Copenhagen
Copenhagen2 stops$548
Munich
Munich2 stops$566
Berlin
Berlin2 stops$530
Edinburgh
Edinburgh2 stops$621
Prague
Prague2 stops$654

Book Cheap St. Louis to 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 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 Europe

Tue, Dec 2 - Tue, Dec 9
KLM Logo
9:00 am - 7:45 amSTL-DUB
16h 45m1 stop
KLM Logo
9:45 am - 4:49 pmDUB-STL
13h 04m1 stop
$433KLM
Find Deal
Mon, Dec 8 - Wed, Dec 24
Lufthansa Logo
6:42 pm - 11:00 pmSTL-FCO
21h 18m2 stops
Lufthansa Logo
7:05 am - 1:55 pmFCO-STL
13h 50m1 stop
$435Lufthansa
Find Deal
Tue, Dec 2 - Tue, Dec 9
Delta Logo
9:00 am - 7:45 amSTL-DUB
16h 45m1 stop
Delta Logo
10:45 am - 8:47 pmDUB-STL
16h 02m2 stops
$438Delta
Find Deal
Wed, Feb 4 - Tue, Feb 17
Delta Logo
6:35 am - 8:00 amSTL-BCN
18h 25m2 stops
Delta Logo
10:15 am - 9:08 amBCN-STL
29h 53m2 stops
$449Delta
Find Deal
Sun, Nov 16 - Sun, Nov 23
United Airlines Logo
3:14 pm - 8:10 amSTL-DUB
10h 56m1 stop
United Airlines Logo
9:00 am - 7:16 pmDUB-STL
40h 16m2 stops
$455United Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
United Airlines Logo
1:35 pm - 9:35 amSTL-BCN
37h 00m2 stops
United Airlines Logo
1:35 pm - 5:03 pmBCN-STL
34h 28m2 stops
$461United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Air Canada Logo
5:27 pm - 10:55 amSTL-FCO
34h 28m2 stops
Air Canada Logo
1:10 pm - 2:23 pmFCO-STL
32h 13m2 stops
$466Air Canada
Find Deal
Sat, Feb 21 - Sat, Feb 28
Air Canada Logo
7:41 am - 7:10 amSTL-DUB
17h 29m2 stops
Air Canada Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$470Air Canada
Find Deal
Thu, Jan 15 - Sun, Feb 1
American Airlines Logo
2:54 pm - 11:55 amSTL-BCN
14h 01m1 stop
American Airlines Logo
10:40 am - 10:59 pmBCN-STL
19h 19m1 stop
$484American Airlines
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Sat, Dec 6 - Sat, Dec 13
American Airlines Logo
2:09 pm - 6:50 pmSTL-ATH
20h 41m2 stops
American Airlines Logo
7:15 am - 7:05 pmATH-STL
19h 50m2 stops
$499American Airlines
Find Deal
Booking Insights

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

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

What is the cheapest St. Louis to Europe flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Europe from St. Louis found in the last 72 hours was to Frankfurt am Main, at $557 round-trip. The most popular route is from St. Louis (STL) to Frankfurt am Main Airport (FRA), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $557.

Can I save money by flying with a layover from St. Louis to 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 $857, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to 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 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 Europe is October, when tickets cost $740 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,333 and $1,222 respectively.

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

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

If you are looking for a flight deal from St. Louis to Europe, look for departures on Mondays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Europe, Thursday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from St. Louis to 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 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 Europe, you should book around 4 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$167
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from St. Louis to London Gatwick Airport

FAQs - booking Europe flights

  • What is the luggage policy for airlines flying from STL Airport?

    American Airlines flights from St. Louis to Europe allow one personal item and a carry-on bag. Your item must fit under the seat in front of you. Personal items and carry-ons should not exceed 18 x 14 x 8 inches and 22 x 14 x 9 inches, respectively. The carry-on bag and personal items should also not exceed 50 lbs.

  • What special services are available for mothers traveling with infants at St. Louis Lambert International Airport?

    STL Airport provides special rooms known as Lactation Suites for mothers who need to breastfeed or pump milk. You can find these suites after going through security near gates E33, C9, and A10 in each concourse. These Lactation Suites have amenities like sinks, power outlets, and comfortable chairs. The Suites are designed to be accessible to other family members and friends as they have extra seats.

  • What accessibility services does STL offer travelers on flights from St. Louis to Europe with limited mobility?

    STL Airport has elevators between the lower and upper levels in the terminals and all parking garages. All terminals and parking garage elevators have Braille signage, raised numbers, and audible information. STL has an information and paging booth that operates from 7 a.m. to 11 p.m. at Terminal 1 between baggage claim and carousels, while at Terminal 2, it is on the lower level near Door 14.

  • When taking a flight from St. Louis to Europe, which is the best airport to fly into in Central Europe?

    Frankfurt am Main International Airport (FRA) is the best airport to fly into in Central Europe. Lufthansa Airlines provides several daily non-stop flights to Frankfurt from STL Airport. Furthermore, travelers can find connections to several other destinations in Europe from FRA Airport, with popular domestic destinations like Berlin (BER) and Munich (MUC) and international destinations like Paris (CDG), Venice (VCE), and Warsaw (WAW).

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

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

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

    The cheapest time of day to fly to Europe is generally at night, when round-trip flights cost $781 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to Europe is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $958.

Top tips for finding cheap flights to Europe

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Frankfurt am Main $483 one-way - $759 round-trip
  • Passengers can get flights from St. Louis to Europe from Lambert St. Louis International Airport (STL), the primary commercial airport serving the metropolitan area. STL is a hub for American Airlines, offering flights to various destination airports across Europe, such as Heathrow Airport (LHR) in London, Istanbul Airport (IST) in Istanbul, and Madrid-Barajas Airport (MAD) in Madrid.
  • The best way to get to the airport from downtown St. Louis is by taking the Metrolink. The distance between downtown and the airport is around 13 miles. The train departs from Civic Center Station every 20 minutes for a 32-minute commute to STL Airport Terminal 1.
  • American Airlines allows minors between 5 and 14 to travel alone on flights from St. Louis to Europe using the unaccompanied minor program. The airline will provide an escort at airports and on board. The service is optional for minors between the ages of 15 and 17. If requested, an extra fee is charged.
  • St. Louis Lambert International Airport has three lounges where you can retreat while waiting for your flight from St. Louis to Europe. American Airlines Admirals Lounge is at Terminal 1 for certain American Airlines passengers; James S. McDonell USO Lounge at Terminal 1 for military members and their families; and Wingtips Lounge at Terminal 2, post-security.
  • American Airlines is a sustainable airline with flights from St. Louis to Europe. The airline achieves this by using sustainable aviation fuel on all its aircraft, which causes up to a 60% decrease in carbon footprint. It also encourages passengers to pack light for their flights.

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

 
Need help choosing which airline to fly with from St. Louis to 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 8001 reviews
7.9Comfort
7.3Food
8.5Crew
7.9Entertainment
8.2Boarding
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

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

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

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.

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

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 you need to know for your flight to Europe

Information on your arrival and departure airports