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Cheap flights from St. Louis to Europe from $303

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 7/20. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$525Multiple Airlines
Sun, Aug 16 - Tue, Aug 25
Multiple Airlines Logo
12:10 pm - 8:15 am
STL
-
DUB
14h 05m
2 stops
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$528Multiple Airlines
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
6:55 pm - 9:45 am
STL
-
DUB
32h 50m
1 stop
United Airlines Logo
9:50 am - 12:49 pm
DUB
-
STL
32h 59m
2 stops
$529United Airlines
Sat, Aug 15 - Tue, Aug 25
United Airlines Logo
5:32 pm - 7:45 am
STL
-
DUB
32h 13m
2 stops
United Airlines Logo
9:50 am - 12:49 pm
DUB
-
STL
32h 59m
2 stops
$532United Airlines
Sat, Aug 15 - Tue, Aug 25
Air Canada Logo
9:16 am - 7:45 am
STL
-
DUB
16h 29m
2 stops
Air Canada Logo
9:50 am - 6:32 pm
DUB
-
STL
14h 42m
1 stop
$541Air Canada
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
12:30 pm - 7:30 am
STL
-
DUB
13h 00m
1 stop
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$542United Airlines
Tue, Sep 1 - Tue, Sep 15
Air Canada Logo
5:00 am - 7:45 am
STL
-
DUB
20h 45m
2 stops
Air Canada Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$546Air Canada
Wed, Sep 2 - Tue, Sep 15
Lufthansa Logo
6:55 pm - 6:25 pm
STL
-
LHR
17h 30m
2 stops
Lufthansa Logo
7:30 pm - 1:25 pm
LHR
-
STL
23h 55m
1 stop
$668Lufthansa
Mon, Aug 17 - Mon, Aug 24
Lufthansa Logo
3:30 pm - 12:40 pm
STL
-
LHR
15h 10m
1 stop
Lufthansa Logo
7:30 pm - 1:25 pm
LHR
-
STL
23h 55m
1 stop
$674Lufthansa
Mon, Aug 17 - Mon, Aug 24
American Airlines Logo
10:24 am - 8:40 am
STL
-
LGW
16h 16m
2 stops
American Airlines Logo
10:45 am - 11:46 pm
LGW
-
STL
19h 01m
2 stops
$719American Airlines
Tue, Apr 21 - Tue, Apr 28

United Airlines flights from St. Louis to Europe

Our best United Airlines deals on St. Louis to Europe flight tickets
United Airlines
Aug 15
STL6:55 pmLambert-St Louis
32h 50m
1 stop
DUB9:45 amDublin
Aug 25
DUB9:50 amDublin
32h 59m
2 stops
STL12:49 pmLambert-St Louis
$529
United Airlines
Aug 15
STL5:32 pmLambert-St Louis
32h 13m
2 stops
DUB7:45 amDublin
Aug 25
DUB9:50 amDublin
32h 59m
2 stops
STL12:49 pmLambert-St Louis
$532
United Airlines
Sep 1
STL12:30 pmLambert-St Louis
13h 00m
1 stop
DUB7:30 amDublin
Sep 15
DUB9:20 amDublin
15h 21m
1 stop
STL6:41 pmLambert-St Louis
$542

Turkish Airlines flights from St. Louis to Europe

Our best Turkish Airlines deals on St. Louis to Europe flight tickets
Turkish Airlines
Apr 6
STL7:45 amLambert-St Louis
28h 45m
2 stops
ATH8:30 pmAthens Eleftherios V.
Apr 21
ATH3:40 pmAthens Eleftherios V.
37h 33m
2 stops
STL9:13 pmLambert-St Louis
$974
Turkish Airlines
Mar 17
STL7:40 amLambert-St Louis
19h 50m
2 stops
FRA9:30 amFrankfurt am Main
Apr 1
FRA7:00 pmFrankfurt am Main
33h 13m
2 stops
STL9:13 pmLambert-St Louis
$1,175

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 March 10, 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

Sun 8/16

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 8/25

6:00 am-1:25 pm

1 stop13h 25m

$525

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/16

12:10 pm-8:15 am

2 stops14h 05m

Dublin

Tue 8/25

6:00 am-1:25 pm

1 stop13h 25m

$528

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 8/15

6:55 pm-9:45 am

1 stop32h 50m

Dublin

Tue 8/25

9:50 am-12:49 pm

2 stops32h 59m

$529

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 8/15

5:32 pm-7:45 am

2 stops32h 13m

Dublin

Tue 8/25

9:50 am-12:49 pm

2 stops32h 59m

$532

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/16

9:16 am-7:45 am

2 stops16h 29m

Dublin

Tue 8/25

9:50 am-6:32 pm

1 stop14h 42m

$541

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

12:30 pm-7:30 am

1 stop13h 00m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$542

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/2

5:00 am-7:45 am

2 stops20h 45m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$546

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/17

6:55 pm-6:25 pm

2 stops17h 30m

London Heathrow

Mon 8/24

7:30 pm-1:25 pm

1 stop23h 55m

$668

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/17

3:30 pm-12:40 pm

1 stop15h 10m

London Heathrow

Mon 8/24

7:30 pm-1:25 pm

1 stop23h 55m

$674

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Tue 4/21

10:24 am-8:40 am

2 stops16h 16m

London Gatwick

Tue 4/28

10:45 am-11:46 pm

2 stops19h 01m

$719

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 $672, 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 October is also cheap. Prices for this month can be found on momondo for an average of $690.

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 $688. Flights from St. Louis to Europe on a Saturday will generally be more expensive and average around $989. 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 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 $839 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 $756 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 50% 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

$444

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 $444. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $856.
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

  • 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 $390Free CancellationRating
7.1
11,415 reviews
Search American Airlines flights
British AirwaysPriceFrom $458Free CancellationRating
6.7
7,781 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,841 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.8
1,468 reviews
Search KLM flights
DeltaPriceFrom $507Free CancellationRating
7.9
8,277 reviews
Search Delta flights
IberiaPriceFrom $552Free CancellationRating
7.0
3,133 reviews
Search Iberia flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,412 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.3
1,708 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
10,800 reviews
Search Air Canada flights
Air FrancePriceFrom $616Free CancellationRating
7.4
1,543 reviews
Search Air France 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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