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Cheap flights from St. Louis to Europe from $261

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 7/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
po, říjen 26 - st, listopad 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
po, říjen 26 - st, listopad 4
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$354Aer Lingus
út, srpen 11 - st, srpen 19
United Airlines Logo
10:23 am - 7:45 am
STL
-
FCO
14h 22m
1 stop
United Airlines Logo
11:15 am - 12:20 pm
FCO
-
STL
32h 05m
2 stops
$775United Airlines
st, listopad 18 - čt, listopad 26
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
ne, listopad 8 - st, listopad 18
British Airways Logo
8:05 pm - 5:35 pm
STL
-
BCN
14h 30m
2 stops
British Airways Logo
8:50 am - 8:08 pm
BCN
-
STL
17h 18m
2 stops
$781British Airways
po, říjen 19 - pá, říjen 30
British Airways Logo
9:35 pm - 10:40 pm
STL
-
BCN
18h 05m
1 stop
British Airways Logo
11:50 am - 7:30 pm
BCN
-
STL
14h 40m
1 stop
$789British Airways
st, srpen 19 - út, říjen 20
American Airlines Logo
1:20 pm - 3:50 pm
STL
-
ATH
18h 30m
2 stops
American Airlines Logo
7:30 am - 12:05 am
ATH
-
STL
24h 35m
2 stops
$795American Airlines
po, listopad 16 - čt, listopad 26
Lufthansa Logo
3:40 pm - 1:40 pm
STL
-
CDG
15h 00m
1 stop
Lufthansa Logo
6:10 am - 1:45 pm
CDG
-
STL
14h 35m
1 stop
$829Lufthansa
st, listopad 11 - st, listopad 18
Lufthansa Logo
3:15 pm - 9:55 am
STL
-
CDG
11h 40m
1 stop
Lufthansa Logo
6:10 am - 2:18 pm
CDG
-
STL
15h 08m
2 stops
$840Lufthansa
po, listopad 30 - út, prosinec 8

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United Airlines flights from St. Louis to Europe

Our best United Airlines deals on St. Louis to Europe flight tickets
United Airlines
Oct 26
STL5:18 pmLambert-St Louis
9h 52m
1 stop
DUB8:10 amDublin
Nov 4
DUB9:00 amDublin
12h 30m
1 stop
STL3:30 pmLambert-St Louis
$692
United Airlines
Sep 6
STL12:59 pmLambert-St Louis
12h 46m
2 stops
DUB7:45 amDublin
Sep 15
DUB9:20 amDublin
15h 21m
1 stop
STL6:41 pmLambert-St Louis
$695
United Airlines
Sep 8
STL5:30 pmLambert-St Louis
32h 45m
2 stops
DUB8:15 amDublin
Sep 15
DUB9:20 amDublin
15h 21m
1 stop
STL6:41 pmLambert-St Louis
$696

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
14h 55m
1 stop
BCN7:35 pmBarcelona-El Prat
Oct 30
BCN8:50 amBarcelona-El Prat
17h 18m
2 stops
STL8:08 pmLambert-St Louis
$776
Iberia
Oct 19
STL12:43 pmLambert-St Louis
14h 27m
1 stop
BCN10:10 amBarcelona-El Prat
Oct 30
BCN7:00 amBarcelona-El Prat
19h 08m
2 stops
STL8:08 pmLambert-St Louis
$784
Iberia
Jun 9
STL9:35 pmLambert-St Louis
8h 00m
LHR11:35 amLondon Heathrow
Jun 16
LHR12:55 pmLondon Heathrow
14h 42m
1 stop
STL9:37 pmLambert-St Louis
$1,428

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 červen 8, 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

po 10/26

4:15 pm-5:10 am

1 stop31h 55m

Dublin

st 11/4

1:00 pm-3:30 pm

1 stop32h 30m

$350

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

po 10/26

4:15 pm-5:10 am

1 stop31h 55m

Dublin

st 11/4

1:00 pm-3:30 pm

1 stop32h 30m

$351

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

út 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

st 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$354

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

st 11/18

10:23 am-7:45 am

1 stop14h 22m

Rome Fiumicino

čt 11/26

11:15 am-12:20 pm

2 stops32h 05m

$775

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

ne 11/8

6:40 am-7:45 am

1 stop18h 05m

Rome Fiumicino

st 11/18

7:05 am-1:45 pm

1 stop13h 40m

$779

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

po 10/19

8:05 pm-5:35 pm

2 stops14h 30m

Barcelona-El Prat

pá 10/30

8:50 am-8:08 pm

2 stops17h 18m

$781

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

st 8/19

9:35 pm-10:40 pm

1 stop18h 05m

Barcelona-El Prat

út 10/20

11:50 am-7:30 pm

1 stop14h 40m

$789

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

po 11/16

1:20 pm-3:50 pm

2 stops18h 30m

Athens Eleftherios V.

čt 11/26

7:30 am-12:05 am

2 stops24h 35m

$795

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

st 11/11

3:40 pm-1:40 pm

1 stop15h 00m

Paris Charles de Gaulle

st 11/18

6:10 am-1:45 pm

1 stop14h 35m

$829
Quickest round-trip

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

po 11/30

3:15 pm-9:55 am

1 stop11h 40m

Paris Charles de Gaulle

út 12/8

6:10 am-2:18 pm

2 stops15h 08m

$840

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 41% 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

$324

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 $324. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $1,077.
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
8,395 reviews
Search Delta flights
British AirwaysPriceFrom $470Free CancellationRating
6.7
8,031 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,048 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,527 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,230 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.5
689 reviews
Search Virgin Atlantic flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,149 reviews
Search Air Canada flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,795 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,812 reviews
Search Scandinavian Airlines 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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