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Cheap flights from St. Louis to Europe from $148

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 9/28. 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
4:05 pm - 5:10 am
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
1:00 pm - 3:26 pm
DUB
-
STL
32h 26m
1 stop
$338Aer Lingus
Sat, Jan 9 - Tue, Jan 19
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
$342Aer Lingus
Mon, Sep 7 - Wed, Sep 16
Lufthansa Logo
1:00 pm - 7:55 am
STL
-
FRA
11h 55m
1 stop
Lufthansa Logo
1:20 pm - 11:38 pm
FRA
-
STL
17h 18m
1 stop
$508Lufthansa
Mon, Aug 31 - Sat, Sep 12
Lufthansa Logo
3:30 pm - 7:25 am
STL
-
FRA
8h 55mnonstop
Lufthansa Logo
1:20 pm - 11:38 pm
FRA
-
STL
17h 18m
1 stop
$513Lufthansa
Mon, Aug 31 - Sat, Sep 12
Multiple Airlines Logo
7:04 pm - 7:10 am
STL
-
DUB
30h 06m
2 stops
Multiple Airlines Logo
5:10 am - 11:09 pm
DUB
-
STL
23h 59m
2 stops
$688Multiple Airlines
Sat, Jan 9 - Tue, Jan 19
United Airlines Logo
11:45 am - 9:55 am
STL
-
DUB
16h 10m
1 stop
United Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$692United Airlines
Tue, Dec 8 - Tue, Dec 15
Air Canada Logo
7:04 pm - 7:10 am
STL
-
DUB
30h 06m
2 stops
Air Canada Logo
9:00 am - 2:30 pm
DUB
-
STL
35h 30m
2 stops
$692Air Canada
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
8:55 am - 8:15 am
STL
-
DUB
17h 20m
1 stop
Multiple Airlines Logo
5:10 am - 1:45 pm
DUB
-
STL
14h 35m
1 stop
$692Multiple Airlines
Wed, Oct 21 - Wed, Nov 18
United Airlines Logo
11:25 am - 9:55 am
STL
-
DUB
16h 30m
2 stops
United Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$696United Airlines
Tue, Dec 8 - Tue, Dec 15
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:50 am - 6:41 pm
DUB
-
STL
14h 51m
2 stops
$706Air Canada
Mon, Sep 21 - Tue, Oct 6

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Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Aug 31
STL1:00 pmLambert-St Louis
11h 55m
1 stop
FRA7:55 amFrankfurt am Main
Sep 12
FRA1:20 pmFrankfurt am Main
17h 18m
1 stop
STL11:38 pmLambert-St Louis
$508
Lufthansa
Aug 31
STL3:30 pmLambert-St Louis
8h 55m
FRA7:25 amFrankfurt am Main
Sep 12
FRA1:20 pmFrankfurt am Main
17h 18m
1 stop
STL11:38 pmLambert-St Louis
$513
Lufthansa
Nov 9
STL6:50 pmLambert-St Louis
16h 10m
2 stops
FCO6:00 pmRome Fiumicino
Nov 18
FCO7:05 amRome Fiumicino
13h 40m
1 stop
STL1:45 pmLambert-St Louis
$761

British Airways flights from St. Louis to Europe

Our best British Airways deals on St. Louis to Europe flight tickets
British Airways
Dec 2
STL2:09 pmLambert-St Louis
11h 46m
1 stop
FRA8:55 amFrankfurt am Main
Jan 13
FRA10:15 amFrankfurt am Main
19h 44m
1 stop
STL10:59 pmLambert-St Louis
$857
British Airways
Oct 7
STL9:35 pmLambert-St Louis
8h 00m
LHR11:35 amLondon Heathrow
Oct 21
LHR4:25 pmLondon Heathrow
9h 05m
STL7:30 pmLambert-St Louis
$964
British Airways
Sep 13
STL9:40 pmLambert-St Louis
8h 00m
LHR11:40 amLondon Heathrow
Oct 3
LHR1:45 pmLondon Heathrow
13h 59m
1 stop
STL9:44 pmLambert-St Louis
$1,009

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 August 1, 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

Sat 1/9

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Tue 1/19

1:00 pm-3:26 pm

1 stop32h 26m

$338

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/7

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/16

1:20 pm-2:00 pm

1 stop30h 40m

$342

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 8/31

1:00 pm-7:55 am

1 stop11h 55m

Frankfurt am Main

Sat 9/12

1:20 pm-11:38 pm

1 stop17h 18m

$508
Quickest round-trip

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 8/31

3:30 pm-7:25 am

Nonstop8h 55m

Frankfurt am Main

Sat 9/12

1:20 pm-11:38 pm

1 stop17h 18m

$513

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 1/9

7:04 pm-7:10 am

2 stops30h 06m

Dublin

Tue 1/19

5:10 am-11:09 pm

2 stops23h 59m

$688

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

11:45 am-9:55 am

1 stop16h 10m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$692

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

7:04 pm-7:10 am

2 stops30h 06m

Dublin

Tue 12/15

9:00 am-2:30 pm

2 stops35h 30m

$692

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/21

8:55 am-8:15 am

1 stop17h 20m

Dublin

Wed 11/18

5:10 am-1:45 pm

1 stop14h 35m

$692

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

11:25 am-9:55 am

2 stops16h 30m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$696

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/21

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 10/6

9:50 am-6:41 pm

2 stops14h 51m

$706

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 February. Flight prices, which tend to average around $693, 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 February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $706.

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 $1,196. 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 $926 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 $839 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 40% 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

$541

Fastest flight time

8h 00m

Direct flights

Mon, Wed, Thu and Sat

Airports in Europe

4,106 airports
The best one-way flight to Europe from St. Louis in the past 72 hours is $541. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $977.
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 4,106 airports in Europe. From St. Louis there are direct flights to Frankfurt am Main (FRA), 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
Virgin AtlanticPriceFrom $304Free CancellationRating
7.5
694 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $410Free CancellationRating
6.7
8,136 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,172 reviews
Search Lufthansa flights
DeltaPriceFrom $483Free CancellationRating
7.8
8,493 reviews
Search Delta flights
American AirlinesPriceFrom $502Free CancellationRating
7.1
11,846 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,552 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,265 reviews
Search Iberia flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
10,061 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,912 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
11,419 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.

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Find better results for your trip to Europe

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