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Cheap flights from St. Louis to Europe from $176

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 2/6. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
7:02 pm - 8:40 amSTL-BCN
30h 38m1 stop
Virgin Atlantic Logo
9:30 am - 4:28 pmBCN-STL
13h 58m1 stop
$403Virgin Atlantic
Find Deal
lun., dic. 8 - mié., dic. 24
Delta Logo
1:35 pm - 9:20 amSTL-DUB
13h 45m2 stops
Delta Logo
10:45 am - 8:17 pmDUB-STL
15h 32m1 stop
$424Delta
Find Deal
dom., nov. 23 - mar., dic. 9
United Airlines Logo
3:19 pm - 8:10 amSTL-DUB
10h 51m1 stop
United Airlines Logo
9:00 am - 9:58 pmDUB-STL
42h 58m2 stops
$455United Airlines
Find Deal
vie., dic. 5 - mié., dic. 10
United Airlines Logo
9:57 am - 7:30 amSTL-DUB
15h 33m2 stops
United Airlines Logo
9:00 am - 7:27 pmDUB-STL
40h 27m2 stops
$460United Airlines
Find Deal
vie., ene. 16 - mié., ene. 21
Air Canada Logo
10:00 am - 9:35 amSTL-BCN
16h 35m2 stops
Air Canada Logo
1:35 pm - 5:54 pmBCN-STL
35h 19m2 stops
$463Air Canada
Find Deal
lun., dic. 8 - mié., dic. 24
American Airlines Logo
6:00 am - 8:15 amSTL-ZRH
19h 15m1 stop
American Airlines Logo
10:15 am - 10:44 pmZRH-STL
19h 29m1 stop
$479American Airlines
Find Deal
vie., ene. 30 - vie., feb. 6
Air Canada Logo
8:00 am - 9:35 amSTL-BCN
18h 35m2 stops
Air Canada Logo
1:35 pm - 3:29 pmBCN-STL
32h 54m2 stops
$480Air Canada
Find Deal
mié., nov. 26 - jue., dic. 4
Lufthansa Logo
4:49 pm - 1:40 amSTL-ATH
24h 51m2 stops
Lufthansa Logo
6:35 am - 12:05 amATH-STL
25h 30m2 stops
$488Lufthansa
Find Deal
sáb., ene. 31 - lun., feb. 16
Lufthansa Logo
6:42 pm - 10:50 pmSTL-CDG
21h 08m2 stops
Lufthansa Logo
6:15 am - 1:55 pmCDG-STL
14h 40m1 stop
$488Lufthansa
Find Deal
mar., dic. 2 - vie., dic. 12
American Airlines Logo
2:19 pm - 2:55 pmSTL-FCO
17h 36m2 stops
American Airlines Logo
1:10 pm - 10:58 pmFCO-STL
16h 48m1 stop
$502American Airlines
Find Deal
vie., feb. 20 - sáb., feb. 28

Virgin Atlantic flights from St. Louis to Europe

Our best Virgin Atlantic deals on St. Louis to Europe flight tickets
Virgin Atlantic
Dec 8
STL7:02 pmLambert-St Louis
30h 38m
1 stop
BCN8:40 amBarcelona-El Prat
Dec 24
BCN9:30 amBarcelona-El Prat
13h 58m
1 stop
STL4:28 pmLambert-St Louis
$403
Find similar
Virgin Atlantic
Nov 17
STL11:39 amLambert-St Louis
14h 01m
1 stop
BCN8:40 amBarcelona-El Prat
Nov 24
BCN10:15 amBarcelona-El Prat
20h 08m
2 stops
STL11:23 pmLambert-St Louis
$488
Find similar
Virgin Atlantic
Jan 20
STL1:00 pmLambert-St Louis
13h 30m
2 stops
CDG9:30 amParis Charles de Gaulle
Feb 3
CDG10:30 amParis Charles de Gaulle
17h 09m
2 stops
STL8:39 pmLambert-St Louis
$508
Find similar

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Dec 8
STL10:00 amLambert-St Louis
39h 10m
2 stops
DUB7:10 amDublin
Feb 23
DUB9:00 amDublin
42h 00m
2 stops
STL9:00 pmLambert-St Louis
$462
Find similar
Air Canada
Dec 8
STL10:00 amLambert-St Louis
16h 35m
2 stops
BCN9:35 amBarcelona-El Prat
Dec 24
BCN1:35 pmBarcelona-El Prat
35h 19m
2 stops
STL5:54 pmLambert-St Louis
$463
Find similar
Air Canada
Dec 7
STL5:27 pmLambert-St Louis
55h 43m
2 stops
DUB7:10 amDublin
Feb 27
DUB9:00 amDublin
40h 19m
2 stops
STL7:19 pmLambert-St Louis
$467
Find similar

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 noviembre 12, 2025.
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

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

lun. 12/8

7:02 pm-8:40 am

1 stop30h 38m

Barcelona-El Prat

mié. 12/24

9:30 am-4:28 pm

1 stop13h 58m

$403

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 11/23

1:35 pm-9:20 am

2 stops13h 45m

Dublin

mar. 12/9

10:45 am-8:17 pm

1 stop15h 32m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

vie. 12/5

3:19 pm-8:10 am

1 stop10h 51m

Dublin

mié. 12/10

9:00 am-9:58 pm

2 stops42h 58m

$455

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

vie. 1/16

9:57 am-7:30 am

2 stops15h 33m

Dublin

mié. 1/21

9:00 am-7:27 pm

2 stops40h 27m

$460

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

lun. 12/8

10:00 am-9:35 am

2 stops16h 35m

Barcelona-El Prat

mié. 12/24

1:35 pm-5:54 pm

2 stops35h 19m

$463

St. LouisZurich

STL - ZRH

STLZRH

Lambert-St Louis

vie. 1/30

6:00 am-8:15 am

1 stop19h 15m

Zurich

vie. 2/6

10:15 am-10:44 pm

1 stop19h 29m

$479

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

mié. 11/26

8:00 am-9:35 am

2 stops18h 35m

Barcelona-El Prat

jue. 12/4

1:35 pm-3:29 pm

2 stops32h 54m

$480

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

sáb. 1/31

4:49 pm-1:40 am

2 stops24h 51m

Athens Eleftherios V.

lun. 2/16

6:35 am-12:05 am

2 stops25h 30m

$488

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

mar. 12/2

6:42 pm-10:50 pm

2 stops21h 08m

Paris Charles de Gaulle

vie. 12/12

6:15 am-1:55 pm

1 stop14h 40m

$488

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

vie. 2/20

2:19 pm-2:55 pm

2 stops17h 36m

Rome Fiumicino

sáb. 2/28

1:10 pm-10:58 pm

1 stop16h 48m

$502

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 November. Flight prices, which tend to average around $709, 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 November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $724.

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 Monday. Travelers who choose to depart for Europe on a Monday will often find tickets for as low as $668. Flights from St. Louis to Europe on a Friday will generally be more expensive and average around $848. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Europe is in the evening. momondo users have found flights departing from St. Louis to Europe in the evening for as low as $781. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $958. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 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 $901 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 $731 on momondo.

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

There are 3 cabin classes available to choose from on Lambert-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 32% 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

$418

Fastest flight time

8h 05m

Direct flights

Mon, Wed, Thu and Sat

Airports in Europe

2 airports
The best one-way flight to Europe from St. Louis in the past 72 hours is $418. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $598.
The fastest flight from St. Louis to Europe takes 8h 05m
Direct flights go from St. Louis to Europe on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights.
There are 2 airports near Europe: Frankfurt am Main (FRA), London Heathrow (LHR)
Search flight deals

  • 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
American AirlinesPriceFrom $488Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,565 reviews
Search Lufthansa flights
KLMPriceFrom $529Free CancellationRating
7.7
1,410 reviews
Search KLM flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,513 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,008 reviews
Search Delta flights
Air CanadaPriceFrom $573Free CancellationRating
7.1
10,442 reviews
Search Air Canada flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,013 reviews
Search United Airlines flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,486 reviews
Search Air France flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,008 reviews
Search Iberia flights
Scandinavian AirlinesPriceFrom $602Free CancellationRating
7.4
1,571 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.

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