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Cheap flights from St. Louis to Europe from $281

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 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Lufthansa Logo
1:15 pm - 8:10 am
STL
-
DUB
12h 55m1 stop
Lufthansa Logo
5:10 am - 1:55 pm
DUB
-
STL
14h 45m1 stop
$420Lufthansa
jue., ene. 22 - mié., ene. 28
Lufthansa Logo
1:15 pm - 8:10 am
STL
-
DUB
12h 55m1 stop
Lufthansa Logo
10:40 am - 5:43 pm
DUB
-
STL
13h 03m1 stop
$432Lufthansa
jue., ene. 8 - jue., ene. 15
United Airlines Logo
1:15 pm - 8:10 am
STL
-
DUB
12h 55m1 stop
United Airlines Logo
9:00 am - 10:00 pm
DUB
-
STL
43h 00m2 stops
$455United Airlines
jue., ene. 22 - lun., ene. 26
United Airlines Logo
11:20 am - 7:30 am
STL
-
DUB
14h 10m2 stops
United Airlines Logo
9:00 am - 12:29 pm
DUB
-
STL
33h 29m2 stops
$460United Airlines
sáb., ene. 17 - sáb., ene. 24
British Airways Logo
11:05 am - 9:40 am
STL
-
DUB
16h 35m2 stops
British Airways Logo
8:50 am - 9:15 pm
DUB
-
STL
18h 25m2 stops
$462British Airways
mié., ene. 14 - mié., ene. 28
British Airways Logo
12:06 pm - 9:50 am
STL
-
DUB
15h 44m2 stops
British Airways Logo
10:55 am - 1:03 pm
DUB
-
STL
32h 08m2 stops
$467British Airways
sáb., ene. 10 - sáb., ene. 17
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
ATH
16h 35m2 stops
Air Canada Logo
12:10 pm - 3:29 pm
ATH
-
STL
34h 19m1 stop
$496Air Canada
mar., mar. 3 - lun., mar. 9
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
ATH
16h 35m2 stops
Air Canada Logo
12:10 pm - 3:29 pm
ATH
-
STL
34h 19m1 stop
$596Air Canada
mar., mar. 3 - lun., mar. 9
American Airlines Logo
7:05 am - 6:45 am
STL
-
LGW
17h 40m2 stops
American Airlines Logo
2:00 pm - 8:05 am
LGW
-
STL
24h 05m2 stops
$695American Airlines
mié., abr. 1 - lun., abr. 20
American Airlines Logo
11:22 am - 9:00 am
STL
-
LGW
16h 38m2 stops
American Airlines Logo
11:20 am - 8:35 am
LGW
-
STL
26h 15m2 stops
$799American Airlines
mié., mar. 11 - vie., mar. 20

Aer Lingus flights from St. Louis to Europe

Our best Aer Lingus deals on St. Louis to Europe flight tickets
Aer Lingus
Apr 22
STL11:14 amLambert-St Louis
16h 01m
2 stops
FRA10:15 amFrankfurt am Main
Apr 29
FRA10:55 amFrankfurt am Main
19h 29m
2 stops
STL11:24 pmLambert-St Louis
$939
Find similar
Aer Lingus
Dec 12
STL3:22 pmLambert-St Louis
35h 43m
2 stops
FRA10:05 amFrankfurt am Main
Dec 21
FRA8:00 pmFrankfurt am Main
34h 44m
2 stops
STL11:44 pmLambert-St Louis
$1,361
Find similar
Aer Lingus
Dec 14
STL3:22 pmLambert-St Louis
23h 43m
2 stops
LHR9:05 pmLondon Heathrow
Dec 16
LHR8:50 amLondon Heathrow
38h 00m
2 stops
STL4:50 pmLambert-St Louis
$1,482
Find similar

Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Jan 22
STL1:15 pmLambert-St Louis
12h 55m
1 stop
DUB8:10 amDublin
Jan 28
DUB5:10 amDublin
14h 45m
1 stop
STL1:55 pmLambert-St Louis
$420
Find similar
Lufthansa
Jan 8
STL1:15 pmLambert-St Louis
12h 55m
1 stop
DUB8:10 amDublin
Jan 15
DUB10:40 amDublin
13h 03m
1 stop
STL5:43 pmLambert-St Louis
$432
Find similar
Lufthansa
Jan 17
STL11:22 amLambert-St Louis
13h 33m
1 stop
FCO7:55 amRome Fiumicino
Jan 30
FCO7:05 amRome Fiumicino
13h 50m
1 stop
STL1:55 pmLambert-St Louis
$443
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 diciembre 11, 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. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 1/22

1:15 pm-8:10 am

1 stop12h 55m

Dublin

mié. 1/28

5:10 am-1:55 pm

1 stop14h 45m

$420

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 1/8

1:15 pm-8:10 am

1 stop12h 55m

Dublin

jue. 1/15

10:40 am-5:43 pm

1 stop13h 03m

$432

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 1/22

1:15 pm-8:10 am

1 stop12h 55m

Dublin

lun. 1/26

9:00 am-10:00 pm

2 stops43h 00m

$455

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

sáb. 1/17

11:20 am-7:30 am

2 stops14h 10m

Dublin

sáb. 1/24

9:00 am-12:29 pm

2 stops33h 29m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 1/14

11:05 am-9:40 am

2 stops16h 35m

Dublin

mié. 1/28

8:50 am-9:15 pm

2 stops18h 25m

$462

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

sáb. 1/10

12:06 pm-9:50 am

2 stops15h 44m

Dublin

sáb. 1/17

10:55 am-1:03 pm

2 stops32h 08m

$467

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

mar. 3/3

4:05 pm-4:40 pm

2 stops16h 35m

Athens Eleftherios V.

lun. 3/9

12:10 pm-3:29 pm

1 stop34h 19m

$496

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

mar. 3/3

4:05 pm-4:40 pm

2 stops16h 35m

Athens Eleftherios V.

lun. 3/9

12:10 pm-3:29 pm

1 stop34h 19m

$596

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

mié. 4/1

7:05 am-6:45 am

2 stops17h 40m

London Gatwick

lun. 4/20

2:00 pm-8:05 am

2 stops24h 05m

$695

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

mié. 3/11

11:22 am-9:00 am

2 stops16h 38m

London Gatwick

vie. 3/20

11:20 am-8:35 am

2 stops26h 15m

$799

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 $721.

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 $812. 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 $765. 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 $885 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 $769 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 16% 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

$280

Fastest flight time

8h 05m

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 $280. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $675.
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. The only airline offering direct flights is Lufthansa.
There are 4,107 airports in Europe. From St. Louis there are direct flights to 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
KLMPriceFrom $507Free CancellationRating
7.7
1,432 reviews
Search KLM flights
Austrian AirlinesPriceFrom $509Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Air CanadaPriceFrom $573Free CancellationRating
7.1
10,517 reviews
Search Air Canada flights
United AirlinesPriceFrom $574Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,504 reviews
Search Air France flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,045 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.

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