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Cheap flights from St. Louis to Europe from $247

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 1/23. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
11:55 am - 8:50 am
STL
-
BCN
13h 55m
1 stop
Finnair Logo
10:40 am - 7:29 pm
BCN
-
STL
15h 49m
1 stop
$403Finnair
dom., ene. 25 - mar., feb. 10
British Airways Logo
12:01 pm - 10:15 am
STL
-
DUB
16h 14m
2 stops
British Airways Logo
7:35 am - 9:12 pm
DUB
-
STL
19h 37m
2 stops
$405British Airways
dom., feb. 1 - vie., feb. 13
United Airlines Logo
11:25 am - 8:10 am
STL
-
DUB
14h 45m
1 stop
United Airlines Logo
9:00 am - 8:23 pm
DUB
-
STL
41h 23m
2 stops
$408United Airlines
mié., feb. 18 - vie., feb. 27
United Airlines Logo
7:41 am - 7:30 am
STL
-
DUB
17h 49m
2 stops
United Airlines Logo
9:00 am - 12:21 pm
DUB
-
STL
33h 21m
2 stops
$412United Airlines
mié., feb. 18 - vie., feb. 27
Air Canada Logo
9:57 am - 9:35 am
STL
-
BCN
16h 38m
2 stops
Air Canada Logo
1:35 pm - 11:02 am
BCN
-
STL
28h 27m
2 stops
$421Air Canada
dom., ene. 25 - mar., feb. 10
Air Canada Logo
7:41 am - 9:25 am
STL
-
FCO
18h 44m
2 stops
Air Canada Logo
12:10 pm - 3:29 pm
FCO
-
STL
33h 19m
1 stop
$422Air Canada
dom., feb. 22 - mar., mar. 10
Delta Logo
7:10 am - 9:45 am
STL
-
MXP
19h 35m
2 stops
Delta Logo
12:00 pm - 11:37 pm
MXP
-
STL
18h 37m
2 stops
$446Delta
dom., ene. 25 - mar., feb. 10
Delta Logo
6:10 am - 1:35 pm
STL
-
ATH
24h 25m
2 stops
Delta Logo
10:05 am - 8:43 pm
ATH
-
STL
18h 38m
1 stop
$459Delta
mié., mar. 11 - mar., mar. 31
Lufthansa Logo
6:55 pm - 5:35 pm
STL
-
CDG
15h 40m
2 stops
Lufthansa Logo
6:25 am - 1:55 pm
CDG
-
STL
14h 30m
1 stop
$489Lufthansa
dom., feb. 15 - dom., mar. 1
Lufthansa Logo
3:30 pm - 7:25 am
STL
-
FRA
8h 55mnonstop
Lufthansa Logo
10:40 am - 1:25 pm
FRA
-
STL
9h 45mnonstop
$801Lufthansa
mié., abr. 8 - vie., abr. 17

Finnair flights from St. Louis to Europe

Our best Finnair deals on St. Louis to Europe flight tickets
Finnair
Jan 25
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 10
BCN10:40 amBarcelona-El Prat
15h 49m
1 stop
STL7:29 pmLambert-St Louis
$403
Finnair
Jan 25
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 10
BCN10:40 amBarcelona-El Prat
15h 49m
1 stop
STL7:29 pmLambert-St Louis
$426
Finnair
Mar 17
STL11:46 amLambert-St Louis
24h 09m
2 stops
FCO5:55 pmRome Fiumicino
Mar 24
FCO6:40 pmRome Fiumicino
30h 49m
2 stops
STL7:29 pmLambert-St Louis
$465

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Jan 25
STL9:57 amLambert-St Louis
16h 38m
2 stops
BCN9:35 amBarcelona-El Prat
Feb 10
BCN1:35 pmBarcelona-El Prat
28h 27m
2 stops
STL11:02 amLambert-St Louis
$421
Air Canada
Feb 22
STL7:41 amLambert-St Louis
18h 44m
2 stops
FCO9:25 amRome Fiumicino
Mar 10
FCO12:10 pmRome Fiumicino
33h 19m
1 stop
STL3:29 pmLambert-St Louis
$422
Air Canada
Jan 25
STL9:57 amLambert-St Louis
16h 38m
2 stops
BCN9:35 amBarcelona-El Prat
Feb 10
BCN1:35 pmBarcelona-El Prat
28h 27m
2 stops
STL11:02 amLambert-St Louis
$423

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 enero 15, 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. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

dom. 1/25

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

mar. 2/10

10:40 am-7:29 pm

1 stop15h 49m

$403

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 2/1

12:01 pm-10:15 am

2 stops16h 14m

Dublin

vie. 2/13

7:35 am-9:12 pm

2 stops19h 37m

$405

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 2/18

11:25 am-8:10 am

1 stop14h 45m

Dublin

vie. 2/27

9:00 am-8:23 pm

2 stops41h 23m

$408

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 2/18

7:41 am-7:30 am

2 stops17h 49m

Dublin

vie. 2/27

9:00 am-12:21 pm

2 stops33h 21m

$412

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

dom. 1/25

9:57 am-9:35 am

2 stops16h 38m

Barcelona-El Prat

mar. 2/10

1:35 pm-11:02 am

2 stops28h 27m

$421

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

dom. 2/22

7:41 am-9:25 am

2 stops18h 44m

Rome Fiumicino

mar. 3/10

12:10 pm-3:29 pm

1 stop33h 19m

$422

St. LouisMilan

STL - MXP

STLMXP

Lambert-St Louis

dom. 1/25

7:10 am-9:45 am

2 stops19h 35m

Milan Malpensa

mar. 2/10

12:00 pm-11:37 pm

2 stops18h 37m

$446

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

mié. 3/11

6:10 am-1:35 pm

2 stops24h 25m

Athens Eleftherios V.

mar. 3/31

10:05 am-8:43 pm

1 stop18h 38m

$459

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

dom. 2/15

6:55 pm-5:35 pm

2 stops15h 40m

Paris Charles de Gaulle

dom. 3/1

6:25 am-1:55 pm

1 stop14h 30m

$489

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

mié. 4/8

3:30 pm-7:25 am

Nonstop8h 55m

Frankfurt am Main

vie. 4/17

10:40 am-1:25 pm

Nonstop9h 45m

$801

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 November. 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 November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $716.

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 $668. Flights from St. Louis to Europe on a Saturday will generally be more expensive and average around $1,101. 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 $867 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 32% 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 $708.
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
LufthansaPriceFrom $482Free CancellationRating
6.8
7,718 reviews
Search Lufthansa flights
American AirlinesPriceFrom $488Free CancellationRating
7.2
11,135 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.7
1,440 reviews
Search KLM flights
Austrian AirlinesPriceFrom $509Free CancellationRating
7.6
894 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,678 reviews
Search British Airways flights
DeltaPriceFrom $557Free CancellationRating
7.9
8,050 reviews
Search Delta flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,164 reviews
Search United Airlines flights
Air CanadaPriceFrom $573Free CancellationRating
7.1
10,624 reviews
Search Air Canada flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,522 reviews
Search Air France flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,087 reviews
Search Iberia 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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