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Cheap flights from St. Louis to Europe from $206

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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Find the cheapest flights from St. Louis to Europe

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
1:15 pm - 12:00 pm
STL
-
BCN
15h 45m2 stops
Lufthansa Logo
11:00 am - 11:59 pm
BCN
-
STL
19h 59m1 stop
$436Lufthansa
Mon, Jan 19 - Mon, Jan 26
Austrian Airlines Logo
11:22 am - 7:30 am
STL
-
DUB
14h 08m1 stop
Austrian Airlines Logo
9:30 am - 11:59 pm
DUB
-
STL
20h 29m1 stop
$441Austrian Airlines
Tue, Jan 20 - Tue, Jan 27
British Airways Logo
10:00 pm - 4:20 pm
STL
-
DUB
12h 20m1 stop
British Airways Logo
10:30 am - 7:30 pm
DUB
-
STL
15h 00m1 stop
$448British Airways
Sun, Apr 26 - Tue, May 5
United Airlines Logo
8:05 am - 8:10 am
STL
-
DUB
18h 05m1 stop
United Airlines Logo
9:00 am - 10:00 pm
DUB
-
STL
43h 00m2 stops
$456United Airlines
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
4:05 pm - 8:35 am
STL
-
BCN
33h 30m2 stops
Air Canada Logo
12:35 pm - 3:29 pm
BCN
-
STL
32h 54m2 stops
$457Air Canada
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
10:07 am - 7:30 am
STL
-
DUB
15h 23m2 stops
United Airlines Logo
9:00 am - 10:00 pm
DUB
-
STL
43h 00m2 stops
$460United Airlines
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
6:30 am - 7:10 am
STL
-
DUB
18h 40m2 stops
Air Canada Logo
9:00 am - 2:30 pm
DUB
-
STL
35h 30m2 stops
$462Air Canada
Sat, Jan 10 - Sat, Jan 17
British Airways Logo
6:44 pm - 10:30 pm
STL
-
BCN
20h 46m2 stops
British Airways Logo
12:30 pm - 10:44 pm
BCN
-
STL
17h 14m1 stop
$473British Airways
Sun, Jan 18 - Sun, Jan 25
American Airlines Logo
9:33 am - 9:05 am
STL
-
LIS
17h 32m1 stop
American Airlines Logo
7:45 am - 6:02 pm
LIS
-
STL
16h 17m2 stops
$504American Airlines
Sun, Feb 8 - Sun, Feb 15
American Airlines Logo
1:35 pm - 1:35 pm
STL
-
ORY
17h 00m2 stops
American Airlines Logo
7:25 am - 8:13 pm
ORY
-
STL
19h 48m2 stops
$570American Airlines
Mon, Jan 19 - Sun, Feb 1

Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Dec 29
STL11:05 amLambert-St Louis
15h 05m
1 stop
DUB8:10 amDublin
Jan 14
DUB10:40 amDublin
13h 03m
1 stop
STL5:43 pmLambert-St Louis
$432
Find similar
Lufthansa
Jan 22
STL11:22 amLambert-St Louis
14h 38m
1 stop
BCN9:00 amBarcelona-El Prat
Jan 27
BCN11:00 amBarcelona-El Prat
19h 59m
1 stop
STL11:59 pmLambert-St Louis
$435
Find similar
Lufthansa
Jan 19
STL1:15 pmLambert-St Louis
15h 45m
2 stops
BCN12:00 pmBarcelona-El Prat
Jan 26
BCN11:00 amBarcelona-El Prat
19h 59m
1 stop
STL11:59 pmLambert-St Louis
$436
Find similar

British Airways flights from St. Louis to Europe

Our best British Airways deals on St. Louis to Europe flight tickets
British Airways
Jan 18
STL6:44 pmLambert-St Louis
20h 46m
2 stops
BCN10:30 pmBarcelona-El Prat
Jan 25
BCN12:30 pmBarcelona-El Prat
17h 14m
1 stop
STL10:44 pmLambert-St Louis
$473
Find similar
British Airways
Jan 19
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
Jan 26
BCN10:40 amBarcelona-El Prat
19h 15m
1 stop
STL10:55 pmLambert-St Louis
$482
Find similar
British Airways
Feb 28
STL3:36 pmLambert-St Louis
19h 14m
2 stops
ATH6:50 pmAthens Eleftherios V.
Mar 8
ATH4:50 pmAthens Eleftherios V.
38h 02m
2 stops
STL11:52 pmLambert-St Louis
$490
Find similar

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 December 23, 2025.
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

Mon 1/19

1:15 pm-12:00 pm

2 stops15h 45m

Barcelona-El Prat

Mon 1/26

11:00 am-11:59 pm

1 stop19h 59m

$436

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/20

11:22 am-7:30 am

1 stop14h 08m

Dublin

Tue 1/27

9:30 am-11:59 pm

1 stop20h 29m

$441

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 4/26

10:00 pm-4:20 pm

1 stop12h 20m

Dublin

Tue 5/5

10:30 am-7:30 pm

1 stop15h 00m

$448

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

8:05 am-8:10 am

1 stop18h 05m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$456

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/7

4:05 pm-8:35 am

2 stops33h 30m

Barcelona-El Prat

Sun 3/15

12:35 pm-3:29 pm

2 stops32h 54m

$457

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

10:07 am-7:30 am

2 stops15h 23m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 1/10

6:30 am-7:10 am

2 stops18h 40m

Dublin

Sat 1/17

9:00 am-2:30 pm

2 stops35h 30m

$462

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 1/18

6:44 pm-10:30 pm

2 stops20h 46m

Barcelona-El Prat

Sun 1/25

12:30 pm-10:44 pm

1 stop17h 14m

$473

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 2/8

9:33 am-9:05 am

1 stop17h 32m

Lisbon Humberto Delgado

Sun 2/15

7:45 am-6:02 pm

2 stops16h 17m

$504

St. LouisParis

STL - ORY

STLORY

Lambert-St Louis

Mon 1/19

1:35 pm-1:35 pm

2 stops17h 00m

Paris Orly

Sun 2/1

7:25 am-8:13 pm

2 stops19h 48m

$570

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 October is also cheap. Prices for this month can be found on momondo for an average of $721.

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 Sunday. Travelers who choose to depart for Europe on a Sunday will often find tickets for as low as $658. 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 time of day to depart on your flight to Europe?

According to our data, the cheapest time of day to fly to Europe is in the evening. momondo users have found flights departing from St. Louis to Europe in the evening for as low as $770. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $958. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $883 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 $769 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 36% 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

$413

Fastest flight time

8h 05m

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 $413. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $662.
The fastest flight from St. Louis to Europe takes 8h 05m
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 $488Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.7
1,434 reviews
Search KLM flights
Austrian AirlinesPriceFrom $509Free CancellationRating
7.6
880 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,607 reviews
Search British Airways flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,649 reviews
Search Lufthansa flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,015 reviews
Search Delta flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,107 reviews
Search United Airlines flights
IberiaPriceFrom $571Free CancellationRating
7.0
3,056 reviews
Search Iberia flights
Air CanadaPriceFrom $573Free CancellationRating
7.1
10,551 reviews
Search Air Canada flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,513 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.

An easier way to manage your Europe trip

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