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Cheap flights from St. Louis to Europe from $192

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 10/13. 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 amSTL  Lambert-St Louis-DUB Dublin
31h 05m1 stop Toronto Pearson Intl
Aer Lingus Logo
1:00 pm - 3:26 pmDUB  Dublin-STL Lambert-St Louis
32h 26m1 stop Toronto Pearson Intl
$338Aer Lingus
Sat, Jan 9 - Tue, Jan 19
Aer Lingus Logo
4:05 pm - 5:10 amSTL  Lambert-St Louis-DUB Dublin
31h 05m1 stop Toronto Pearson Intl
Aer Lingus Logo
1:00 pm - 3:26 pmDUB  Dublin-STL Lambert-St Louis
32h 26m1 stop Toronto Pearson Intl
$339Aer Lingus
Sat, Jan 9 - Tue, Jan 19
Air Canada Logo
2:40 pm - 8:50 amSTL  Lambert-St Louis-MAD Madrid Barajas
11h 10m1 stop Toronto Pearson Intl
Air Canada Logo
1:30 pm - 8:00 pmMAD  Madrid Barajas-STL Lambert-St Louis
13h 30m1 stop Toronto Pearson Intl
$656Air Canada
Mon, Sep 21 - Tue, Oct 6
United Airlines Logo
1:08 pm - 8:10 amSTL  Lambert-St Louis-DUB Dublin
13h 02m1 stop Chicago O'Hare Intl
United Airlines Logo
9:00 am - 12:06 pmDUB  Dublin-STL Lambert-St Louis
33h 06m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$679United Airlines
Tue, Dec 8 - Tue, Dec 15
Air Canada Logo
12:10 pm - 6:50 amSTL  Lambert-St Louis-MAD Madrid Barajas
11h 40m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
1:30 pm - 2:00 pmMAD  Madrid Barajas-STL Lambert-St Louis
31h 30m1 stop Toronto Pearson Intl
$685Air Canada
Sun, Sep 27 - Tue, Oct 13
Multiple Airlines Logo
7:33 am - 7:10 amSTL  Lambert-St Louis-DUB Dublin
17h 37m2 stops Chicago O'Hare Intl Toronto Pearson Intl
Multiple Airlines Logo
6:35 pm - 3:26 pmDUB  Dublin-STL Lambert-St Louis
50h 51m2 stops Zurich Toronto Pearson Intl
$688Multiple Airlines
Wed, Dec 2 - Mon, Dec 7
United Airlines Logo
11:45 am - 7:30 amSTL  Lambert-St Louis-DUB Dublin
13h 45m1 stop Newark
United Airlines Logo
9:00 am - 3:26 pmDUB  Dublin-STL Lambert-St Louis
12h 26m1 stop Toronto Pearson Intl
$692United Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
4:05 pm - 5:45 pmSTL  Lambert-St Louis-DUB Dublin
19h 40m2 stops Toronto Pearson Intl Zurich
Multiple Airlines Logo
5:10 am - 1:45 pmDUB  Dublin-STL Lambert-St Louis
14h 35m1 stop Frankfurt am Main
$701Multiple Airlines
Tue, Nov 3 - Wed, Nov 11
Delta Logo
6:00 am - 7:45 amSTL  Lambert-St Louis-DUB Dublin
19h 45m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:45 am - 6:13 pmDUB  Dublin-STL Lambert-St Louis
18h 28m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$702Delta
Mon, Nov 9 - Wed, Nov 18
Delta Logo
2:18 pm - 2:30 pmSTL  Lambert-St Louis-DUB Dublin
18h 12m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle
Delta Logo
5:45 am - 11:23 pmDUB  Dublin-STL Lambert-St Louis
23h 38m2 stops Amsterdam Schiphol Minneapolis St Paul
$707Delta
Tue, Dec 8 - Tue, Dec 15

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Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Sep 21
STL2:40 pmLambert-St Louis
11h 10m
1 stop
MAD8:50 amMadrid Barajas
Oct 6
MAD1:30 pmMadrid Barajas
13h 30m
1 stop
STL8:00 pmLambert-St Louis
$656
Air Canada
Sep 27
STL12:10 pmLambert-St Louis
11h 40m
1 stop
MAD6:50 amMadrid Barajas
Oct 13
MAD1:30 pmMadrid Barajas
31h 30m
1 stop
STL2:00 pmLambert-St Louis
$685
Air Canada
Sep 21
STL2:40 pmLambert-St Louis
11h 10m
1 stop
MAD8:50 amMadrid Barajas
Oct 6
MAD1:30 pmMadrid Barajas
31h 30m
1 stop
STL2:00 pmLambert-St Louis
$688

Finnair flights from St. Louis to Europe

Our best Finnair deals on St. Louis to Europe flight tickets
Finnair
Sep 27
STL5:18 pmLambert-St Louis
13h 12m
1 stop
MAD1:30 pmMadrid Barajas
Oct 13
MAD1:35 pmMadrid Barajas
17h 34m
1 stop
STL12:09 amLambert-St Louis
$691
Finnair
Aug 11
STL4:54 pmLambert-St Louis
12h 46m
1 stop
CDG12:40 pmParis Charles de Gaulle
Aug 25
CDG7:15 amParis Charles de Gaulle
23h 59m
2 stops
STL12:14 amLambert-St Louis
$1,102

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 9, 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 Lambert-St Louis - DUB Dublin

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 Lambert-St Louis - DUB Dublin

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

$339
Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 9/21

2:40 pm-8:50 am

1 stop11h 10m

Madrid Barajas

Tue 10/6

1:30 pm-8:00 pm

1 stop13h 30m

$656

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

1:08 pm-8:10 am

1 stop13h 02m

Dublin

Tue 12/15

9:00 am-12:06 pm

2 stops33h 06m

$679

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 9/27

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Tue 10/13

1:30 pm-2:00 pm

1 stop31h 30m

$685

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 12/2

7:33 am-7:10 am

2 stops17h 37m

Dublin

Mon 12/7

6:35 pm-3:26 pm

2 stops50h 51m

$688

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

11:45 am-7:30 am

1 stop13h 45m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$692

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 11/3

4:05 pm-5:45 pm

2 stops19h 40m

Dublin

Wed 11/11

5:10 am-1:45 pm

1 stop14h 35m

$701

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 11/9

6:00 am-7:45 am

1 stop19h 45m

Dublin

Wed 11/18

5:45 am-6:13 pm

2 stops18h 28m

$702

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

2:18 pm-2:30 pm

2 stops18h 12m

Dublin

Tue 12/15

5:45 am-11:23 pm

2 stops23h 38m

$707

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 $699, 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 $704.

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 $1,191. 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 $937 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 $844 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 $989.
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
DeltaPriceFrom $406Free CancellationRating
7.8
8,497 reviews
Search Delta flights
British AirwaysPriceFrom $410Free CancellationRating
6.7
8,151 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,175 reviews
Search Lufthansa flights
American AirlinesPriceFrom $502Free CancellationRating
7.1
11,892 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,555 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,263 reviews
Search Iberia flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
11,455 reviews
Search Air Canada flights
Air FrancePriceFrom $575Free CancellationRating
7.5
1,637 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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Find better results for your trip to Europe

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