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Cheap flights from St. Louis to Europe from $216

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 3/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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.
Multiple Airlines Logo
4:05 pm - 8:15 am
STL
-
DUB
10h 10m
1 stop
Multiple Airlines Logo
5:55 am - 1:25 pm
DUB
-
STL
13h 30m
1 stop
$457Multiple Airlines
Tue, Apr 14 - Wed, Apr 22
United Airlines Logo
7:41 am - 8:10 am
STL
-
DUB
18h 29m
1 stop
United Airlines Logo
9:00 am - 8:23 pm
DUB
-
STL
41h 23m
2 stops
$458United Airlines
Fri, Feb 20 - Fri, Feb 27
British Airways Logo
12:25 pm - 9:40 am
STL
-
DUB
15h 15m
2 stops
British Airways Logo
8:30 pm - 5:21 pm
DUB
-
STL
26h 51m
2 stops
$467British Airways
Tue, Apr 14 - Wed, Apr 22
British Airways Logo
10:43 am - 9:50 am
STL
-
DUB
17h 07m
2 stops
British Airways Logo
8:35 pm - 10:52 pm
DUB
-
STL
32h 17m
2 stops
$471British Airways
Sat, Feb 28 - Fri, Mar 6
Air Canada Logo
4:05 pm - 12:55 pm
STL
-
ATH
36h 50m
2 stops
Air Canada Logo
10:55 am - 9:07 pm
ATH
-
STL
41h 12m
2 stops
$485Air Canada
Sun, Mar 1 - Wed, Mar 11
Lufthansa Logo
4:49 pm - 1:40 am
STL
-
ATH
24h 51m
2 stops
Lufthansa Logo
6:35 am - 11:51 pm
ATH
-
STL
24h 16m
2 stops
$487Lufthansa
Tue, Mar 3 - Mon, Mar 9
Delta Logo
6:56 pm - 1:35 pm
STL
-
ATH
34h 39m
2 stops
Delta Logo
1:45 pm - 4:32 pm
ATH
-
STL
33h 47m
2 stops
$490Delta
Sun, Mar 1 - Mon, Mar 16
Lufthansa Logo
6:55 pm - 1:40 am
STL
-
ATH
22h 45m
2 stops
Lufthansa Logo
6:15 am - 2:55 pm
ATH
-
STL
15h 40m
1 stop
$494Lufthansa
Sun, Mar 1 - Wed, Mar 11
Delta Logo
6:10 am - 1:35 pm
STL
-
ATH
23h 25m
2 stops
Delta Logo
12:20 pm - 11:58 pm
ATH
-
STL
18h 38m
1 stop
$495Delta
Tue, Mar 3 - Tue, Mar 10
Air Canada Logo
6:25 am - 10:55 am
STL
-
FCO
21h 30m
2 stops
Air Canada Logo
12:10 pm - 6:00 pm
FCO
-
STL
35h 50m
2 stops
$502Air Canada
Tue, Mar 3 - Tue, Mar 10

Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Mar 1
STL3:50 pmLambert-St Louis
13h 10m
1 stop
DUB11:00 amDublin
Mar 8
DUB5:10 amDublin
14h 45m
1 stop
STL1:55 pmLambert-St Louis
$484
Lufthansa
Mar 3
STL4:49 pmLambert-St Louis
24h 51m
2 stops
ATH1:40 amAthens Eleftherios V.
Mar 9
ATH6:35 amAthens Eleftherios V.
24h 16m
2 stops
STL11:51 pmLambert-St Louis
$487
Lufthansa
Mar 1
STL6:55 pmLambert-St Louis
22h 45m
2 stops
ATH1:40 amAthens Eleftherios V.
Mar 11
ATH6:15 amAthens Eleftherios V.
15h 40m
1 stop
STL2:55 pmLambert-St Louis
$494

United Airlines flights from St. Louis to Europe

Our best United Airlines deals on St. Louis to Europe flight tickets
United Airlines
Feb 20
STL7:41 amLambert-St Louis
18h 29m
1 stop
DUB8:10 amDublin
Feb 27
DUB9:00 amDublin
41h 23m
2 stops
STL8:23 pmLambert-St Louis
$458
United Airlines
Feb 26
STL8:30 amLambert-St Louis
19h 50m
1 stop
DUB10:20 amDublin
Mar 2
DUB9:00 amDublin
43h 14m
2 stops
STL10:14 pmLambert-St Louis
$460
United Airlines
Feb 20
STL7:41 amLambert-St Louis
17h 49m
2 stops
DUB7:30 amDublin
Feb 27
DUB9:00 amDublin
41h 23m
2 stops
STL8:23 pmLambert-St Louis
$463

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 February 3, 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 4/14

4:05 pm-8:15 am

1 stop10h 10m

Dublin

Wed 4/22

5:55 am-1:25 pm

1 stop13h 30m

$457

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 2/20

7:41 am-8:10 am

1 stop18h 29m

Dublin

Fri 2/27

9:00 am-8:23 pm

2 stops41h 23m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 4/14

12:25 pm-9:40 am

2 stops15h 15m

Dublin

Wed 4/22

8:30 pm-5:21 pm

2 stops26h 51m

$467

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 2/28

10:43 am-9:50 am

2 stops17h 07m

Dublin

Fri 3/6

8:35 pm-10:52 pm

2 stops32h 17m

$471

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Sun 3/1

4:05 pm-12:55 pm

2 stops36h 50m

Athens Eleftherios V.

Wed 3/11

10:55 am-9:07 pm

2 stops41h 12m

$485

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Tue 3/3

4:49 pm-1:40 am

2 stops24h 51m

Athens Eleftherios V.

Mon 3/9

6:35 am-11:51 pm

2 stops24h 16m

$487

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Sun 3/1

6:56 pm-1:35 pm

2 stops34h 39m

Athens Eleftherios V.

Mon 3/16

1:45 pm-4:32 pm

2 stops33h 47m

$490

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Sun 3/1

6:55 pm-1:40 am

2 stops22h 45m

Athens Eleftherios V.

Wed 3/11

6:15 am-2:55 pm

1 stop15h 40m

$494

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Tue 3/3

6:10 am-1:35 pm

2 stops23h 25m

Athens Eleftherios V.

Tue 3/10

12:20 pm-11:58 pm

1 stop18h 38m

$495

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/3

6:25 am-10:55 am

2 stops21h 30m

Rome Fiumicino

Tue 3/10

12:10 pm-6:00 pm

2 stops35h 50m

$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 October. 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 October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $709.

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 Sunday will generally be more expensive and average around $866. 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 Frankfurt am Main 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 $862 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 $768 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 33% 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

$439

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 $439. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $669.
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
7.2
11,218 reviews
Search American Airlines flights
British AirwaysPriceFrom $472Free CancellationRating
6.7
7,712 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,759 reviews
Search Lufthansa flights
KLMPriceFrom $506Free CancellationRating
7.7
1,448 reviews
Search KLM flights
United AirlinesPriceFrom $549Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
DeltaPriceFrom $557Free CancellationRating
7.9
8,139 reviews
Search Delta flights
IberiaPriceFrom $571Free CancellationRating
7.0
3,103 reviews
Search Iberia flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,531 reviews
Search Air France flights
Air CanadaPriceFrom $593Free CancellationRating
7.1
10,685 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,677 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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