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Cheap flights from St. Louis to Europe from $279

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 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
United Airlines Logo
12:15 pm - 10:20 am
STL
-
DUB
16h 05m
1 stop
United Airlines Logo
9:00 am - 10:14 pm
DUB
-
STL
43h 14m
2 stops
$458United Airlines
Sat, Feb 21 - Mon, Mar 2
United Airlines Logo
6:30 am - 9:45 am
STL
-
DUB
21h 15m
1 stop
United Airlines Logo
9:50 am - 12:06 pm
DUB
-
STL
32h 16m
1 stop
$460United Airlines
Mon, Apr 27 - Tue, May 5
British Airways Logo
6:33 pm - 7:40 pm
STL
-
DUB
20h 07m
2 stops
British Airways Logo
8:40 pm - 5:13 pm
DUB
-
STL
25h 33m
2 stops
$468British Airways
Mon, Mar 9 - Mon, Mar 16
British Airways Logo
2:33 pm - 9:40 am
STL
-
DUB
13h 07m
2 stops
British Airways Logo
8:35 am - 7:30 pm
DUB
-
STL
16h 55m
1 stop
$472British Airways
Tue, Apr 14 - Wed, Apr 22
Air Canada Logo
7:45 am - 8:00 am
STL
-
BCN
17h 15m
2 stops
Air Canada Logo
1:15 pm - 3:24 pm
BCN
-
STL
33h 09m
1 stop
$488Air Canada
Wed, Apr 15 - Tue, Apr 21
Air Canada Logo
8:17 am - 9:20 am
STL
-
ATH
18h 03m
2 stops
Air Canada Logo
1:10 pm - 3:29 pm
ATH
-
STL
33h 19m
1 stop
$492Air Canada
Tue, Mar 10 - Tue, Mar 17
Lufthansa Logo
7:00 pm - 11:00 pm
STL
-
FCO
22h 00m
2 stops
Lufthansa Logo
12:20 pm - 10:59 pm
FCO
-
STL
16h 39m
2 stops
$496Lufthansa
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
11:09 am - 1:25 pm
STL
-
ATH
19h 16m
2 stops
American Airlines Logo
8:00 am - 11:44 pm
ATH
-
STL
22h 44m
2 stops
$506American Airlines
Sun, Mar 8 - Sun, Mar 15
Lufthansa Logo
7:00 pm - 11:00 pm
STL
-
FCO
22h 00m
2 stops
Lufthansa Logo
7:05 pm - 10:59 pm
FCO
-
STL
33h 54m
2 stops
$527Lufthansa
Tue, Mar 17 - Tue, Mar 24
American Airlines Logo
11:22 am - 9:00 am
STL
-
LGW
16h 38m
2 stops
American Airlines Logo
2:30 pm - 8:30 am
LGW
-
STL
24h 00m
2 stops
$652American Airlines
Mon, Mar 23 - Tue, Apr 7

Delta flights from St. Louis to Europe

Our best Delta deals on St. Louis to Europe flight tickets
Delta
Apr 12
STL7:03 amLambert-St Louis
22h 47m
1 stop
BCN12:50 pmBarcelona-El Prat
Apr 23
BCN11:00 amBarcelona-El Prat
19h 34m
1 stop
STL11:34 pmLambert-St Louis
$487
Delta
Feb 21
STL6:35 amLambert-St Louis
19h 10m
2 stops
DUB7:45 amDublin
Mar 1
DUB5:55 amDublin
20h 46m
2 stops
STL8:41 pmLambert-St Louis
$488
Delta
Apr 25
STL5:35 pmLambert-St Louis
32h 20m
1 stop
DUB7:55 amDublin
May 8
DUB10:00 amDublin
29h 26m
1 stop
STL9:26 amLambert-St Louis
$491

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Aug 10
STL9:23 amLambert-St Louis
16h 22m
2 stops
DUB7:45 amDublin
Aug 21
DUB9:20 amDublin
39h 07m
2 stops
STL6:27 pmLambert-St Louis
$480
Air Canada
Apr 15
STL7:45 amLambert-St Louis
17h 15m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 23
BCN1:15 pmBarcelona-El Prat
33h 09m
1 stop
STL3:24 pmLambert-St Louis
$488
Air Canada
Feb 26
STL7:41 amLambert-St Louis
17h 29m
2 stops
DUB7:10 amDublin
Mar 2
DUB9:00 amDublin
19h 59m
2 stops
STL10:59 pmLambert-St Louis
$490

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 11, 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

Sat 2/21

12:15 pm-10:20 am

1 stop16h 05m

Dublin

Mon 3/2

9:00 am-10:14 pm

2 stops43h 14m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 4/27

6:30 am-9:45 am

1 stop21h 15m

Dublin

Tue 5/5

9:50 am-12:06 pm

1 stop32h 16m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 3/9

6:33 pm-7:40 pm

2 stops20h 07m

Dublin

Mon 3/16

8:40 pm-5:13 pm

2 stops25h 33m

$468

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 4/14

2:33 pm-9:40 am

2 stops13h 07m

Dublin

Wed 4/22

8:35 am-7:30 pm

1 stop16h 55m

$472

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/15

7:45 am-8:00 am

2 stops17h 15m

Barcelona-El Prat

Tue 4/21

1:15 pm-3:24 pm

1 stop33h 09m

$488

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Tue 3/10

8:17 am-9:20 am

2 stops18h 03m

Athens Eleftherios V.

Tue 3/17

1:10 pm-3:29 pm

1 stop33h 19m

$492

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/10

7:00 pm-11:00 pm

2 stops22h 00m

Rome Fiumicino

Tue 3/17

12:20 pm-10:59 pm

2 stops16h 39m

$496

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

Sun 3/8

11:09 am-1:25 pm

2 stops19h 16m

Athens Eleftherios V.

Sun 3/15

8:00 am-11:44 pm

2 stops22h 44m

$506

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 3/17

7:00 pm-11:00 pm

2 stops22h 00m

Rome Fiumicino

Tue 3/24

7:05 pm-10:59 pm

2 stops33h 54m

$527

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 3/23

11:22 am-9:00 am

2 stops16h 38m

London Gatwick

Tue 4/7

2:30 pm-8:30 am

2 stops24h 00m

$652

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 $698.

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 $943. 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 $858 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 $786 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 37% 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

$475

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 $475. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $666.
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 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 $390Free CancellationRating
7.2
11,266 reviews
Search American Airlines flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,777 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.7
1,451 reviews
Search KLM flights
DeltaPriceFrom $507Free CancellationRating
7.9
8,180 reviews
Search Delta flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,728 reviews
Search British Airways flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
9,274 reviews
Search United Airlines flights
IberiaPriceFrom $571Free CancellationRating
7.0
3,112 reviews
Search Iberia flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
10,705 reviews
Search Air Canada flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,531 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $602Free CancellationRating
7.3
1,679 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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