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Cheap flights from St. Louis to Europe from $320

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 7/26. 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
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.
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$672Multiple Airlines
mié., sep. 9 - mar., sep. 15
Multiple Airlines Logo
2:40 pm - 8:15 am
STL
-
DUB
11h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$678Multiple Airlines
lun., sep. 7 - mar., sep. 15
Multiple Airlines Logo
3:30 pm - 4:50 pm
STL
-
DUB
19h 20m
1 stop
Multiple Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$688Multiple Airlines
mar., sep. 8 - mar., sep. 15
United Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$691United Airlines
mié., sep. 9 - mar., sep. 15
United Airlines Logo
6:00 am - 7:45 am
STL
-
DUB
19h 45m
2 stops
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$696United Airlines
mié., sep. 9 - mar., sep. 15
British Airways Logo
6:06 am - 9:10 am
STL
-
FCO
20h 04m
1 stop
British Airways Logo
1:30 pm - 10:40 pm
FCO
-
STL
16h 10m
1 stop
$786British Airways
mié., ago. 5 - mié., ago. 19
British Airways Logo
3:25 pm - 10:20 am
STL
-
FCO
11h 55m
1 stop
British Airways Logo
1:30 pm - 10:40 pm
FCO
-
STL
16h 10m
1 stop
$791British Airways
mié., ago. 5 - mié., ago. 19
American Airlines Logo
6:06 am - 9:10 am
STL
-
FCO
20h 04m
1 stop
American Airlines Logo
1:30 pm - 11:51 pm
FCO
-
STL
17h 21m
2 stops
$813American Airlines
mié., ago. 5 - mié., ago. 19
Lufthansa Logo
8:44 am - 8:45 am
STL
-
CDG
17h 01m
2 stops
Lufthansa Logo
7:25 am - 9:22 pm
CDG
-
STL
20h 57m
2 stops
$978Lufthansa
mar., sep. 1 - vie., sep. 18
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
9:15 am - 11:00 pm
LCY
-
STL
19h 45m
2 stops
$1,035Lufthansa
mié., ago. 19 - vie., ago. 28

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Aer Lingus flights from St. Louis to Europe

Our best Aer Lingus deals on St. Louis to Europe flight tickets
Aer Lingus
Apr 26
STL12:27 pmLambert-St Louis
10h 43m
1 stop
DUB5:10 amDublin
May 3
DUB4:45 pmDublin
11h 34m
1 stop
STL10:19 pmLambert-St Louis
$946
Aer Lingus
May 5
STL12:27 pmLambert-St Louis
16h 43m
2 stops
LHR11:10 amLondon Heathrow
May 19
LHR12:00 pmLondon Heathrow
16h 19m
2 stops
STL10:19 pmLambert-St Louis
$1,049
Aer Lingus
Apr 26
STL12:27 pmLambert-St Louis
13h 38m
2 stops
LHR8:05 amLondon Heathrow
May 14
LHR12:00 pmLondon Heathrow
16h 19m
2 stops
STL10:19 pmLambert-St Louis
$1,050

Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Sep 8
STL3:30 pmLambert-St Louis
19h 20m
1 stop
DUB4:50 pmDublin
Sep 13
DUB8:50 amDublin
34h 35m
1 stop
STL1:25 pmLambert-St Louis
$781
Lufthansa
May 5
STL7:09 pmLambert-St Louis
15h 46m
2 stops
DUB4:55 pmDublin
May 10
DUB5:55 amDublin
13h 30m
1 stop
STL1:25 pmLambert-St Louis
$914
Lufthansa
Aug 16
STL6:55 pmLambert-St Louis
15h 50m
2 stops
ATH6:45 pmAthens Eleftherios V.
Sep 14
ATH2:15 pmAthens Eleftherios V.
31h 10m
1 stop
STL1:25 pmLambert-St Louis
$915

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 abril 23, 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

mié. 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

mar. 9/15

6:00 am-1:25 pm

1 stop13h 25m

$672
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 9/7

2:40 pm-8:15 am

1 stop11h 35m

Dublin

mar. 9/15

6:00 am-1:25 pm

1 stop13h 25m

$678

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 9/8

3:30 pm-4:50 pm

1 stop19h 20m

Dublin

mar. 9/15

9:20 am-6:41 pm

1 stop15h 21m

$688

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

mar. 9/15

9:20 am-6:41 pm

1 stop15h 21m

$691

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 9/9

6:00 am-7:45 am

2 stops19h 45m

Dublin

mar. 9/15

9:20 am-6:41 pm

1 stop15h 21m

$696

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 8/5

6:06 am-9:10 am

1 stop20h 04m

Rome Fiumicino

mié. 8/19

1:30 pm-10:40 pm

1 stop16h 10m

$786

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 8/5

3:25 pm-10:20 am

1 stop11h 55m

Rome Fiumicino

mié. 8/19

1:30 pm-10:40 pm

1 stop16h 10m

$791

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

mié. 8/5

6:06 am-9:10 am

1 stop20h 04m

Rome Fiumicino

mié. 8/19

1:30 pm-11:51 pm

2 stops17h 21m

$813

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

mar. 9/1

8:44 am-8:45 am

2 stops17h 01m

Paris Charles de Gaulle

vie. 9/18

7:25 am-9:22 pm

2 stops20h 57m

$978

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

mié. 8/19

3:30 pm-5:55 pm

1 stop20h 25m

London City

vie. 8/28

9:15 am-11:00 pm

2 stops19h 45m

$1,035

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 $682.

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 $736. 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 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 $848 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 $720 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 43% 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

$474

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 $474. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $986.
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
DeltaPriceFrom $355Free CancellationRating
7.9
8,437 reviews
Search Delta flights
American AirlinesPriceFrom $390Free CancellationRating
7.1
11,659 reviews
Search American Airlines flights
British AirwaysPriceFrom $470Free CancellationRating
6.7
7,906 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,940 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.8
1,507 reviews
Search KLM flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,637 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.3
1,756 reviews
Search Scandinavian Airlines flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,191 reviews
Search Iberia flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
10,957 reviews
Search Air Canada flights
Air FrancePriceFrom $616Free CancellationRating
7.4
1,579 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.

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