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Cheap flights from St. Louis to Europe from $175

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 7/27. 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
4:05 pm - 5:10 am
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
1:00 pm - 3:26 pm
DUB
-
STL
32h 26m
1 stop
$342Aer Lingus
Tue, Nov 17 - Tue, Nov 24
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$347Aer Lingus
Tue, Sep 8 - Tue, Sep 15
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
United Airlines Logo
7:30 am - 9:00 am
STL
-
MAD
18h 30m
1 stop
United Airlines Logo
12:45 pm - 9:09 pm
MAD
-
STL
39h 24m
2 stops
$715United Airlines
Wed, Oct 7 - Wed, Oct 14
United Airlines Logo
5:00 am - 8:00 am
STL
-
MAD
20h 00m
2 stops
United Airlines Logo
1:25 pm - 2:30 pm
MAD
-
STL
32h 05m
2 stops
$718United Airlines
Mon, Nov 2 - Thu, Feb 4
Lufthansa Logo
1:29 pm - 12:40 pm
STL
-
BCN
16h 11m
2 stops
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
$759Lufthansa
Wed, Oct 7 - Sun, Oct 18
Lufthansa Logo
1:29 pm - 12:40 pm
STL
-
BCN
16h 11m
2 stops
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
$760Lufthansa
Wed, Oct 7 - Sun, Oct 18
British Airways Logo
9:40 pm - 3:40 pm
STL
-
EDI
12h 00m
1 stop
British Airways Logo
11:25 am - 11:37 pm
EDI
-
STL
18h 12m
1 stop
$892British Airways
Sun, Oct 4 - Thu, Oct 15
British Airways Logo
9:40 pm - 3:40 pm
STL
-
EDI
12h 00m
1 stop
British Airways Logo
11:25 am - 11:37 pm
EDI
-
STL
18h 12m
1 stop
$929British Airways
Sun, Oct 4 - Sun, Oct 11
Delta Logo
12:52 pm - 6:25 am
STL
-
LHR
11h 33m
1 stop
Delta Logo
9:20 am - 4:17 pm
LHR
-
STL
12h 57m
1 stop
$1,079Delta
Fri, Aug 28 - Thu, Sep 3

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Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Oct 7
STL1:29 pmLambert-St Louis
21h 11m
2 stops
MAD5:40 pmMadrid Barajas
Oct 21
MAD8:25 amMadrid Barajas
21h 34m
2 stops
STL10:59 pmLambert-St Louis
$733
Lufthansa
Nov 4
STL3:40 pmLambert-St Louis
17h 35m
1 stop
MAD4:15 pmMadrid Barajas
Feb 2
MAD5:15 pmMadrid Barajas
27h 30m
1 stop
STL1:45 pmLambert-St Louis
$761
Lufthansa
Sep 28
STL1:29 pmLambert-St Louis
17h 41m
2 stops
MAD2:10 pmMadrid Barajas
Oct 9
MAD6:00 amMadrid Barajas
14h 25m
1 stop
STL1:25 pmLambert-St Louis
$780

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Dec 8
STL7:33 amLambert-St Louis
41h 37m
2 stops
DUB7:10 amDublin
Dec 15
DUB9:00 amDublin
40h 29m
2 stops
STL7:29 pmLambert-St Louis
$686
Air Canada
Dec 8
STL8:33 amLambert-St Louis
40h 37m
2 stops
DUB7:10 amDublin
Dec 15
DUB9:00 amDublin
33h 06m
2 stops
STL12:06 pmLambert-St Louis
$687
Air Canada
Oct 14
STL2:40 pmLambert-St Louis
11h 55m
1 stop
MAD9:35 amMadrid Barajas
Oct 27
MAD12:25 pmMadrid Barajas
35h 41m
2 stops
STL6:06 pmLambert-St Louis
$719

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 July 7, 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 11/17

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Tue 11/24

1:00 pm-3:26 pm

1 stop32h 26m

$342

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/8

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/15

1:20 pm-2:00 pm

1 stop30h 40m

$347

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. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

7:30 am-9:00 am

1 stop18h 30m

Madrid Barajas

Wed 10/14

12:45 pm-9:09 pm

2 stops39h 24m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 11/2

5:00 am-8:00 am

2 stops20h 00m

Madrid Barajas

Thu 2/4

1:25 pm-2:30 pm

2 stops32h 05m

$718

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 10/7

1:29 pm-12:40 pm

2 stops16h 11m

Barcelona-El Prat

Sun 10/18

6:40 am-1:25 pm

1 stop13h 45m

$759

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 10/7

1:29 pm-12:40 pm

2 stops16h 11m

Barcelona-El Prat

Sun 10/18

6:40 am-1:25 pm

1 stop13h 45m

$760

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 10/4

9:40 pm-3:40 pm

1 stop12h 00m

Edinburgh Turnhouse

Thu 10/15

11:25 am-11:37 pm

1 stop18h 12m

$892

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 10/4

9:40 pm-3:40 pm

1 stop12h 00m

Edinburgh Turnhouse

Sun 10/11

11:25 am-11:37 pm

1 stop18h 12m

$929
Quickest round-trip

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 8/28

12:52 pm-6:25 am

1 stop11h 33m

London Heathrow

Thu 9/3

9:20 am-4:17 pm

1 stop12h 57m

$1,079

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 $1,201. 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 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 $906 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 $835 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 31% 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

$503

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 $503. 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. The only airline offering direct flights is British Airways.
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
8,103 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,124 reviews
Search Lufthansa flights
DeltaPriceFrom $483Free CancellationRating
7.8
8,451 reviews
Search Delta flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,785 reviews
Search American Airlines flights
KLMPriceFrom $507Free CancellationRating
7.8
1,534 reviews
Search KLM flights
IberiaPriceFrom $523Free CancellationRating
7.0
3,249 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $538Free CancellationRating
7.5
691 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,945 reviews
Search United Airlines flights
Air CanadaPriceFrom $560Free CancellationRating
7.1
11,318 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.4
1,871 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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