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Cheap flights from St. Louis to Europe from $225

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 9/1. 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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Find the cheapest flights from St. Louis to Europe

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
4:15 pm - 5:10 am
STL
-
DUB
31h 55m
1 stop
Aer Lingus Logo
1:00 pm - 3:30 pm
DUB
-
STL
32h 30m
1 stop
$350Aer Lingus
Mon, Oct 26 - Wed, Nov 4
Aer Lingus Logo
4:15 pm - 5:10 am
STL
-
DUB
31h 55m
1 stop
Aer Lingus Logo
1:00 pm - 3:30 pm
DUB
-
STL
32h 30m
1 stop
$351Aer Lingus
Mon, Oct 26 - Wed, Nov 4
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 16
British Airways Logo
9:35 pm - 6:40 pm
STL
-
BCN
14h 05m
1 stop
British Airways Logo
10:45 am - 7:30 pm
BCN
-
STL
15h 45m
1 stop
$761British Airways
Tue, Oct 13 - Wed, Oct 21
American Airlines Logo
3:23 pm - 11:45 am
STL
-
BCN
13h 22m
2 stops
American Airlines Logo
10:40 am - 7:30 pm
BCN
-
STL
15h 50m
1 stop
$783American Airlines
Sun, Nov 1 - Tue, Nov 10
American Airlines Logo
2:50 pm - 12:25 pm
STL
-
FCO
14h 35m
2 stops
American Airlines Logo
1:00 pm - 8:21 pm
FCO
-
STL
14h 21m
1 stop
$787American Airlines
Wed, Nov 25 - Thu, Dec 3
British Airways Logo
9:35 pm - 8:30 pm
STL
-
BCN
15h 55m
1 stop
British Airways Logo
10:15 am - 7:30 pm
BCN
-
STL
16h 15m
1 stop
$789British Airways
Wed, Aug 19 - Tue, Oct 20
Lufthansa Logo
1:27 pm - 7:45 am
STL
-
FCO
11h 18m
1 stop
Lufthansa Logo
7:05 am - 1:45 pm
FCO
-
STL
13h 40m
1 stop
$797Lufthansa
Sun, Nov 8 - Wed, Nov 18
Lufthansa Logo
4:15 pm - 11:00 am
STL
-
ATH
34h 45m
1 stop
Lufthansa Logo
1:40 pm - 3:30 pm
ATH
-
STL
33h 50m
2 stops
$847Lufthansa
Mon, Nov 2 - Mon, Nov 9
United Airlines Logo
5:30 pm - 9:20 am
STL
-
CDG
32h 50m
1 stop
United Airlines Logo
12:05 pm - 3:30 pm
CDG
-
STL
34h 25m
1 stop
$955United Airlines
Tue, Aug 25 - Thu, Dec 17

Iberia flights from St. Louis to Europe

Our best Iberia deals on St. Louis to Europe flight tickets
Iberia
Oct 13
STL9:35 pmLambert-St Louis
18h 05m
1 stop
BCN10:40 pmBarcelona-El Prat
Oct 21
BCN7:30 amBarcelona-El Prat
19h 00m
1 stop
STL7:30 pmLambert-St Louis
$757
Iberia
Oct 18
STL2:47 pmLambert-St Louis
12h 48m
1 stop
BCN10:35 amBarcelona-El Prat
Dec 2
BCN9:15 pmBarcelona-El Prat
20h 22m
2 stops
STL10:37 amLambert-St Louis
$775
Iberia
Oct 13
STL9:35 pmLambert-St Louis
18h 05m
1 stop
BCN10:40 pmBarcelona-El Prat
Oct 21
BCN1:35 pmBarcelona-El Prat
17h 06m
2 stops
STL11:41 pmLambert-St Louis
$776

British Airways flights from St. Louis to Europe

Our best British Airways deals on St. Louis to Europe flight tickets
British Airways
Oct 26
STL8:05 pmLambert-St Louis
16h 00m
2 stops
DUB5:05 pmDublin
Nov 4
DUB10:20 amDublin
18h 09m
2 stops
STL10:29 pmLambert-St Louis
$706
British Airways
Oct 13
STL9:35 pmLambert-St Louis
14h 05m
1 stop
BCN6:40 pmBarcelona-El Prat
Oct 21
BCN10:45 amBarcelona-El Prat
15h 45m
1 stop
STL7:30 pmLambert-St Louis
$761
British Airways
Nov 2
STL2:08 pmLambert-St Louis
11h 47m
1 stop
FRA8:55 amFrankfurt am Main
Nov 11
FRA10:55 amFrankfurt am Main
13h 59m
1 stop
STL5:54 pmLambert-St Louis
$907

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 May 31, 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/26

4:15 pm-5:10 am

1 stop31h 55m

Dublin

Wed 11/4

1:00 pm-3:30 pm

1 stop32h 30m

$350

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/26

4:15 pm-5:10 am

1 stop31h 55m

Dublin

Wed 11/4

1:00 pm-3:30 pm

1 stop32h 30m

$351

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/16

1:20 pm-2:00 pm

1 stop30h 40m

$354

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 10/13

9:35 pm-6:40 pm

1 stop14h 05m

Barcelona-El Prat

Wed 10/21

10:45 am-7:30 pm

1 stop15h 45m

$761

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 11/1

3:23 pm-11:45 am

2 stops13h 22m

Barcelona-El Prat

Tue 11/10

10:40 am-7:30 pm

1 stop15h 50m

$783

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 11/25

2:50 pm-12:25 pm

2 stops14h 35m

Rome Fiumicino

Thu 12/3

1:00 pm-8:21 pm

1 stop14h 21m

$787

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 8/19

9:35 pm-8:30 pm

1 stop15h 55m

Barcelona-El Prat

Tue 10/20

10:15 am-7:30 pm

1 stop16h 15m

$789
Quickest round-trip

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Sun 11/8

1:27 pm-7:45 am

1 stop11h 18m

Rome Fiumicino

Wed 11/18

7:05 am-1:45 pm

1 stop13h 40m

$797

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Mon 11/2

4:15 pm-11:00 am

1 stop34h 45m

Athens Eleftherios V.

Mon 11/9

1:40 pm-3:30 pm

2 stops33h 50m

$847

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Tue 8/25

5:30 pm-9:20 am

1 stop32h 50m

Paris Charles de Gaulle

Thu 12/17

12:05 pm-3:30 pm

1 stop34h 25m

$955

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 February is also cheap. Prices for this month can be found on momondo for an average of $385.

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 $1,152. 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 London Heathrow 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 $870 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 $705 on momondo.

What cabin class options are available on St. Louis to Europe flights?

There are 3 cabin classes available to choose from on St. Louis to Europe flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 54% 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

$394

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 $394. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $1,083.
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
8,406 reviews
Search Delta flights
American AirlinesPriceFrom $390Free CancellationRating
7.1
11,645 reviews
Search American Airlines flights
British AirwaysPriceFrom $470Free CancellationRating
6.7
8,014 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,034 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.8
1,524 reviews
Search KLM flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.5
689 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,769 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,803 reviews
Search Scandinavian Airlines flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,222 reviews
Search Iberia flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
11,107 reviews
Search Air Canada 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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Find better results for your trip to Europe

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