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Cheap flights from St. Louis to Europe from $239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Europe departing on 5/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:07 pm
DUB
-
STL
12h 47m
1 stop
$407Aer Lingus
di, aug. 11 - wo, aug. 19
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:22 pm
DUB
-
STL
13h 02m
1 stop
$444Aer Lingus
wo, jul. 8 - wo, jul. 15
British Airways Logo
9:35 pm - 8:30 pm
STL
-
BCN
15h 55m
1 stop
British Airways Logo
7:20 pm - 7:30 pm
BCN
-
STL
31h 10m
1 stop
$834British Airways
wo, okt. 7 - za, okt. 17
British Airways Logo
9:35 pm - 7:05 pm
STL
-
ATH
13h 30m
1 stop
British Airways Logo
1:00 pm - 11:23 pm
ATH
-
STL
18h 23m
1 stop
$836British Airways
di, aug. 25 - do, sep. 3
United Airlines Logo
7:30 am - 1:15 pm
STL
-
BCN
22h 45m
1 stop
United Airlines Logo
1:15 pm - 2:00 pm
BCN
-
STL
31h 45m
1 stop
$839United Airlines
zo, sep. 20 - zo, sep. 27
American Airlines Logo
9:35 pm - 7:05 pm
STL
-
ATH
13h 30m
1 stop
American Airlines Logo
11:15 am - 11:59 pm
ATH
-
STL
20h 44m
1 stop
$840American Airlines
di, aug. 25 - do, sep. 3
United Airlines Logo
5:32 pm - 9:20 am
STL
-
BCN
32h 48m
2 stops
United Airlines Logo
1:15 pm - 9:24 pm
BCN
-
STL
39h 09m
2 stops
$842United Airlines
zo, sep. 20 - zo, sep. 27
American Airlines Logo
9:35 pm - 7:05 pm
STL
-
ATH
13h 30m
1 stop
American Airlines Logo
11:15 am - 10:25 pm
ATH
-
STL
19h 10m
2 stops
$844American Airlines
di, aug. 25 - do, sep. 3
Lufthansa Logo
1:13 pm - 1:40 pm
STL
-
CDG
17h 27m
2 stops
Lufthansa Logo
7:20 am - 1:25 pm
CDG
-
STL
13h 05m
1 stop
$1,019Lufthansa
zo, jul. 5 - di, jul. 21
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
9:15 am - 10:59 pm
LCY
-
STL
19h 44m
2 stops
$1,036Lufthansa
wo, aug. 19 - vr, aug. 28

Iberia flights from St. Louis to Europe

Our best Iberia deals on St. Louis to Europe flight tickets
Iberia
Oct 18
STL9:40 pmLambert-St Louis
17h 50m
1 stop
BCN10:30 pmBarcelona-El Prat
Oct 21
BCN7:30 amBarcelona-El Prat
19h 00m
1 stop
STL7:30 pmLambert-St Louis
$758
Iberia
Oct 18
STL9:40 pmLambert-St Louis
17h 50m
1 stop
BCN10:30 pmBarcelona-El Prat
Oct 21
BCN1:35 pmBarcelona-El Prat
17h 06m
2 stops
STL11:41 pmLambert-St Louis
$777
Iberia
Oct 18
STL8:05 pmLambert-St Louis
14h 15m
2 stops
BCN5:20 pmBarcelona-El Prat
Oct 21
BCN9:45 amBarcelona-El Prat
17h 23m
2 stops
STL8:08 pmLambert-St Louis
$794

British Airways flights from St. Louis to Europe

Our best British Airways deals on St. Louis to Europe flight tickets
British Airways
Nov 8
STL10:45 amLambert-St Louis
15h 15m
1 stop
FCO9:00 amRome Fiumicino
Nov 17
FCO1:00 pmRome Fiumicino
26h 58m
1 stop
STL8:58 amLambert-St Louis
$814
British Airways
Oct 7
STL9:35 pmLambert-St Louis
15h 55m
1 stop
BCN8:30 pmBarcelona-El Prat
Oct 17
BCN7:20 pmBarcelona-El Prat
31h 10m
1 stop
STL7:30 pmLambert-St Louis
$834
British Airways
Aug 25
STL9:35 pmLambert-St Louis
13h 30m
1 stop
ATH7:05 pmAthens Eleftherios V.
Sep 3
ATH1:00 pmAthens Eleftherios V.
18h 23m
1 stop
STL11:23 pmLambert-St Louis
$836

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Europe that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated mei 13, 2026.
Use the filters below to find and compare flights from St. Louis to Europe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

di 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

wo 8/19

1:20 pm-8:07 pm

1 stop12h 47m

$407

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

wo 7/8

8:55 am-5:10 am

1 stop14h 15m

Dublin

wo 7/15

1:20 pm-8:22 pm

1 stop13h 02m

$444

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

wo 10/7

9:35 pm-8:30 pm

1 stop15h 55m

Barcelona-El Prat

za 10/17

7:20 pm-7:30 pm

1 stop31h 10m

$834

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

di 8/25

9:35 pm-7:05 pm

1 stop13h 30m

Athens Eleftherios V.

do 9/3

1:00 pm-11:23 pm

1 stop18h 23m

$836

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

zo 9/20

7:30 am-1:15 pm

1 stop22h 45m

Barcelona-El Prat

zo 9/27

1:15 pm-2:00 pm

1 stop31h 45m

$839

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

di 8/25

9:35 pm-7:05 pm

1 stop13h 30m

Athens Eleftherios V.

do 9/3

11:15 am-11:59 pm

1 stop20h 44m

$840

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

zo 9/20

5:32 pm-9:20 am

2 stops32h 48m

Barcelona-El Prat

zo 9/27

1:15 pm-9:24 pm

2 stops39h 09m

$842

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

di 8/25

9:35 pm-7:05 pm

1 stop13h 30m

Athens Eleftherios V.

do 9/3

11:15 am-10:25 pm

2 stops19h 10m

$844

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

zo 7/5

1:13 pm-1:40 pm

2 stops17h 27m

Paris Charles de Gaulle

di 7/21

7:20 am-1:25 pm

1 stop13h 05m

$1,019

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

wo 8/19

3:30 pm-5:55 pm

1 stop20h 25m

London City

vr 8/28

9:15 am-10:59 pm

2 stops19h 44m

$1,036

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Europe

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Europe?

The cheapest month to fly to Europe from St. Louis is in January. Flight prices, which tend to average around $288, are often lower during this time because this is during the off-season. If you aren’t able to travel to Europe during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $725.

What is the cheapest day to depart on your flight to Europe?

The cheapest day to depart from St. Louis to Europe is on a Thursday. Travelers who choose to depart for Europe on a Thursday will often find tickets for as low as $756. Flights from St. Louis to Europe on a Friday will generally be more expensive and average around $1,109. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Lambert-St Louis to Europe flight route?

Fly from Lambert-St Louis to Frankfurt am Main for the best Lambert-St Louis - Europe flight prices

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

You are more likely to see cheaper flights to Europe from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Europe for around $862 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Europe from St. Louis for as low as $700 on momondo.

Can stopping save me money on St. Louis to Europe flights?

You could potentially save up to 43% on your flight if you consider stops on a St. Louis to Europe flight.

Cheap St. Louis to Europe flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Europe

Best Price Found

$473

Fastest flight time

8h 00m

Direct flights

Mon, Wed, Thu and Sat

Airports in Europe

4,107 airports
The best one-way flight to Europe from St. Louis in the past 72 hours is $473. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $1,076.
The fastest flight from St. Louis to Europe takes 8h 00m
Direct flights go from St. Louis to Europe on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights.
There are 4,107 airports in Europe. From St. Louis there are direct flights to London Heathrow (LHR).
Search flight deals

Frequently asked questions about flying from St. Louis to Europe

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Europe?

    Prices for flights from Lambert-St Louis Airport to Europe are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Europe?

  • How old do you have to be to fly from Lambert-St Louis Airport to Europe?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Europe.

  • What documentation or ID do you need to fly to Europe?

    The necessary travel and health documents for your Europe trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Europe

Compare and see reviews for airlines that fly from St. Louis to Europe with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $355Free CancellationRating
7.9
8,453 reviews
Search Delta flights
American AirlinesPriceFrom $390Free CancellationRating
7.1
11,666 reviews
Search American Airlines flights
British AirwaysPriceFrom $470Free CancellationRating
6.7
7,979 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,000 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.8
1,517 reviews
Search KLM flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.4
688 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,711 reviews
Search United Airlines flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,033 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,777 reviews
Search Scandinavian Airlines flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,216 reviews
Search Iberia flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Europe?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Europe. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Europe with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Europe flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Europe?

Once you have performed a search for St. Louis to Europe flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Europe right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Europe from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Europe trip

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