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Cheap flights from St. Louis to Europe from $222

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 11/9. 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
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$354Aer Lingus
Tue, Aug 11 - Wed, Aug 19
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$355Aer Lingus
Tue, Aug 11 - Wed, Aug 19
Lufthansa Logo
1:08 pm - 10:20 am
STL
-
CDG
14h 12m
2 stops
Lufthansa Logo
6:10 am - 1:45 pm
CDG
-
STL
14h 35m
1 stop
$778Lufthansa
Mon, Nov 23 - Wed, Nov 25
Lufthansa Logo
7:04 pm - 5:35 pm
STL
-
CDG
15h 31m
2 stops
Lufthansa Logo
6:10 am - 4:56 pm
CDG
-
STL
17h 46m
2 stops
$787Lufthansa
Mon, Nov 23 - Wed, Nov 25
United Airlines Logo
9:40 am - 9:55 am
STL
-
CDG
17h 15m
1 stop
United Airlines Logo
2:00 pm - 12:06 pm
CDG
-
STL
29h 06m
2 stops
$792United Airlines
Mon, Nov 30 - Tue, Dec 8
United Airlines Logo
9:40 am - 9:55 am
STL
-
CDG
17h 15m
1 stop
United Airlines Logo
2:00 pm - 12:06 pm
CDG
-
STL
29h 06m
2 stops
$793United Airlines
Mon, Nov 30 - Tue, Dec 8
British Airways Logo
9:35 pm - 11:35 am
STL
-
LHR
8h 00mnonstop
British Airways Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
$1,082British Airways
Wed, Aug 26 - Wed, Sep 2
Delta Logo
6:04 pm - 7:15 am
STL
-
LCY
31h 11m
2 stops
Delta Logo
10:00 am - 8:42 pm
LCY
-
STL
16h 42m
2 stops
$1,085Delta
Sat, Aug 1 - Sat, Aug 15
British Airways Logo
9:35 pm - 11:35 am
STL
-
LHR
8h 00mnonstop
British Airways Logo
10:05 am - 6:05 pm
LHR
-
STL
14h 00m
1 stop
$1,086British Airways
Fri, Aug 21 - Sat, Sep 5
Delta Logo
6:30 am - 7:15 am
STL
-
LCY
18h 45m
2 stops
Delta Logo
10:00 am - 8:42 pm
LCY
-
STL
16h 42m
2 stops
$1,130Delta
Thu, Jul 30 - Sat, Aug 15

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British Airways flights from St. Louis to Europe

Our best British Airways deals on St. Louis to Europe flight tickets
British Airways
Nov 23
STL2:08 pmLambert-St Louis
11h 47m
1 stop
FRA8:55 amFrankfurt am Main
Dec 5
FRA10:15 amFrankfurt am Main
16h 12m
1 stop
STL7:27 pmLambert-St Louis
$823
British Airways
Nov 4
STL6:13 pmLambert-St Louis
17h 37m
2 stops
FRA6:50 pmFrankfurt am Main
Nov 18
FRA10:55 amFrankfurt am Main
13h 59m
1 stop
STL5:54 pmLambert-St Louis
$826
British Airways
Aug 18
STL9:35 pmLambert-St Louis
11h 00m
1 stop
EDI2:35 pmEdinburgh Turnhouse
Aug 25
EDI1:10 pmEdinburgh Turnhouse
12h 20m
1 stop
STL7:30 pmLambert-St Louis
$927

American Airlines flights from St. Louis to Europe

Our best American Airlines deals on St. Louis to Europe flight tickets
American Airlines
Dec 2
STL6:53 pmLambert-St Louis
14h 47m
2 stops
FRA4:40 pmFrankfurt am Main
Dec 5
FRA10:15 amFrankfurt am Main
16h 12m
1 stop
STL7:27 pmLambert-St Louis
$825
American Airlines
Nov 1
STL5:17 amLambert-St Louis
18h 58m
1 stop
FRA7:15 amFrankfurt am Main
Nov 8
FRA10:55 amFrankfurt am Main
13h 59m
1 stop
STL5:54 pmLambert-St Louis
$829
American Airlines
Jul 6
STL8:38 amLambert-St Louis
19h 07m
1 stop
ATH11:45 amAthens Eleftherios V.
Jul 14
ATH12:00 pmAthens Eleftherios V.
20h 16m
2 stops
STL12:16 amLambert-St Louis
$1,123

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 June 22, 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 - DUB

STLDUB

Lambert-St Louis

Tue 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$354

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$355

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Mon 11/23

1:08 pm-10:20 am

2 stops14h 12m

Paris Charles de Gaulle

Wed 11/25

6:10 am-1:45 pm

1 stop14h 35m

$778

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Mon 11/23

7:04 pm-5:35 pm

2 stops15h 31m

Paris Charles de Gaulle

Wed 11/25

6:10 am-4:56 pm

2 stops17h 46m

$787

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Mon 11/30

9:40 am-9:55 am

1 stop17h 15m

Paris Charles de Gaulle

Tue 12/8

2:00 pm-12:06 pm

2 stops29h 06m

$792

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Mon 11/30

9:40 am-9:55 am

1 stop17h 15m

Paris Charles de Gaulle

Tue 12/8

2:00 pm-12:06 pm

2 stops29h 06m

$793
Quickest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/26

9:35 pm-11:35 am

Nonstop8h 00m

London Heathrow

Wed 9/2

4:25 pm-7:30 pm

Nonstop9h 05m

$1,082

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Sat 8/1

6:04 pm-7:15 am

2 stops31h 11m

London City

Sat 8/15

10:00 am-8:42 pm

2 stops16h 42m

$1,085

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 8/21

9:35 pm-11:35 am

Nonstop8h 00m

London Heathrow

Sat 9/5

10:05 am-6:05 pm

1 stop14h 00m

$1,086

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Thu 7/30

6:30 am-7:15 am

2 stops18h 45m

London City

Sat 8/15

10:00 am-8:42 pm

2 stops16h 42m

$1,130

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 $288, 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 February is also cheap. Prices for this month can be found on momondo for an average of $385.

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 $1,189. 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 $890 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 $811 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 30% 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

$374

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 $374. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $1,009.
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

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
British AirwaysPriceFrom $470Free CancellationRating
6.7
8,064 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,086 reviews
Search Lufthansa flights
DeltaPriceFrom $483Free CancellationRating
7.8
8,425 reviews
Search Delta flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,744 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,530 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,248 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.5
690 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,874 reviews
Search United Airlines flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,244 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,848 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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Find better results for your trip to Europe

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