$261 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 7/17. 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

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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$1,047
Paris
Paris2 stops$824
Rome
Rome1 stop$774
Madrid
Madrid2 stops$815
Athens
Athens2 stops$791
Istanbul
Istanbul2 stops$619
Lisbon
Lisbon1 stop$780
Dublin
Dublin1 stop$354
Amsterdam
Amsterdam2 stops$764
Milan
Milan1 stop$858
Zurich
Zurich2 stops$714
Copenhagen
Copenhagen1 stop$759
Munich
Munich2 stops$839
Edinburgh
Edinburgh2 stops$789
Berlin
Berlin2 stops$827
Prague
Prague2 stops$742
London
London1 stop$1,047
Paris
Paris2 stops$824
Rome
Rome1 stop$774
Madrid
Madrid2 stops$815
Athens
Athens2 stops$791
Istanbul
Istanbul2 stops$619
Lisbon
Lisbon1 stop$780
Dublin
Dublin1 stop$354
Amsterdam
Amsterdam2 stops$764
Milan
Milan1 stop$858
Zurich
Zurich2 stops$714
Copenhagen
Copenhagen1 stop$759
Munich
Munich2 stops$839
Edinburgh
Edinburgh2 stops$789
Berlin
Berlin2 stops$827
Prague
Prague2 stops$742

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, Sep 1 - Wed, Sep 16
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$354Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:00 pm
DUB
-
STL
12h 40m
1 stop
$355Aer Lingus
Sun, Nov 8 - Thu, Nov 19
American Airlines Logo
2:50 pm - 12:30 pm
STL
-
BCN
14h 40m
2 stops
American Airlines Logo
11:00 am - 10:32 pm
BCN
-
STL
18h 32m
1 stop
$770American Airlines
Tue, Sep 22 - Wed, Oct 7
British Airways Logo
5:18 pm - 3:40 pm
STL
-
BCN
15h 22m
2 stops
British Airways Logo
12:50 pm - 11:41 pm
BCN
-
STL
17h 51m
1 stop
$771British Airways
Tue, Sep 22 - Wed, Oct 7
British Airways Logo
7:00 am - 10:10 am
STL
-
BCN
20h 10m
1 stop
British Airways Logo
12:50 pm - 11:41 pm
BCN
-
STL
17h 51m
1 stop
$773British Airways
Sun, Nov 8 - Wed, Nov 18
United Airlines Logo
6:40 am - 7:45 am
STL
-
FCO
18h 05m
1 stop
United Airlines Logo
7:05 am - 1:45 pm
FCO
-
STL
13h 40m
1 stop
$779United Airlines
Mon, Nov 9 - Wed, Nov 18
United Airlines Logo
1:00 pm - 10:55 am
STL
-
FCO
14h 55m
2 stops
United Airlines Logo
7:05 am - 1:45 pm
FCO
-
STL
13h 40m
1 stop
$783United Airlines
Sun, Nov 1 - Wed, Nov 11
American Airlines Logo
2:17 pm - 11:45 am
STL
-
BCN
14h 28m
2 stops
American Airlines Logo
11:00 am - 10:32 pm
BCN
-
STL
18h 32m
1 stop
$783American Airlines
Wed, Nov 11 - Wed, Nov 25
Lufthansa Logo
11:45 am - 10:05 am
STL
-
ATH
14h 20m
1 stop
Lufthansa Logo
6:40 am - 1:45 pm
ATH
-
STL
15h 05m
1 stop
$804Lufthansa
Wed, Nov 11 - Wed, Nov 18
Lufthansa Logo
3:40 pm - 9:15 am
STL
-
LCY
11h 35m
1 stop
Lufthansa Logo
9:50 am - 10:54 pm
LCY
-
STL
19h 04m
2 stops
$1,059Lufthansa
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 5 days was to London, at $835 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 5 days was $847.

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

The average price for all round-trip flights from St. Louis to Europe depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Europe is generally at night, when round-trip flights cost $1,018 on average. The most expensive time of day to fly to Europe is generally at night, which is peak travel time and where the average cost of a ticket is $1,018.

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $1,199 on average.

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 January, when tickets cost $288 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,458 and $1,190 respectively.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$261
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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.

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 $481 one-way - $1,083 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.
7.8
DeltaOverall score based on 8393 reviews
7.2Food
7.8Comfort
8.5Crew
8.1Boarding
7.8Entertainment
Airline reviews

Connection flights should be spaced out farther because too close I missed my connection.

8.0 ExcellentAnonymous, Jun 2026
PHL - ATL
Read more Delta reviews

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Everything went as planned. The only issue I had was with the gate C31 attendant. The person could barely speak English and was very difficult to understand.

The flight took off an hour late which made the connection concerning

My pillow had a shoe print on it, when I asked if I can have another pillow, I was told “I’m sorry but it is one pillow per guest, do YOU want to turn it inside out” to which I responded , no thanks I will go without. This is generally not ok, but For the price tag I paid flying business this is absolutely unacceptable. Hopefully American Airlines can update their accommodations to bedding that is not tossed on the ground and stepped on, or at least have a couple of extra pillows in hand, incase someone had decided to step on the pillows for what ever reason

The flight from LA to Chicago was smooth and service was very good overall.

The flight from Dallas to Tokyo was not on Japan Airlines. It was on American Airlines. Very disappointed that we did not fly on Japan Airlines. Will not be using you liars again. I’ll just book direct from the airline next time. Wish you could make this right and has us fly on Japan Air when heading back home to the US.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

They made nearly everyone check their bag because the overhead bins are way too small. Extremely inconvenient

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Parents with permanently crying baby on board. Neither parents nor crew did anything to calm the baby. The food was extremely disappointing. Seafood stew was very, very small! Not even appetizer size! Seat had a gap in the back. Had to use a pillow to fill it.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The flight was ok. The seats are so small. The free wifi for members was not an option on this flight. The one flight attendant, older woman with straight white/grey hair, was very rude. The gentleman next to me asked about the wifi since he was a member as well. He stated, accurately, that the option to enter the idea number was not available. Her response was, "I don't know what to tell you" and walked away from him. The rest of the staff was wonderful. I asked another flight attendant about the wifi, she said the free wifi was not enabled on that flight (true or not- at least she was friendly). It was also pretty dirty. When I opened the tray table it had mushed crumbs and there was a dirty used pair of ear buds in my seat pocket. Lastly the air vent above my head was working but stuck so I was unable to move it to face me when it got warm. I fly American often but this really was not a great flight.

My luggage was lost at the airport but American Airlines contacted me and got it to me the next day.

24 hour delays aren’t even heard in 3rd world countries with archaic transportation systems. I’m never flying American Airlines again.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

All the above categories was great. Seats entirely too cramped.

Everything you need to know for your flight to Europe

Information on your arrival and departure airports