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Cheap flights from St. Louis to Europe from $322

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 8/4. 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
$669Multiple Airlines
qua, set 9 - ter, set 15
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
$671Multiple Airlines
qua, set 9 - ter, set 15
United Airlines Logo
8:55 am - 8:15 am
STL
-
DUB
17h 20m
1 stop
United Airlines Logo
9:20 am - 11:50 pm
DUB
-
STL
44h 30m
2 stops
$688United Airlines
ter, set 1 - qua, set 9
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
qua, set 9 - ter, set 15
British Airways Logo
10:22 am - 10:20 am
STL
-
FCO
16h 58m
1 stop
British Airways Logo
1:30 pm - 10:40 pm
FCO
-
STL
16h 10m
1 stop
$786British Airways
qua, ago 5 - qua, ago 19
British Airways Logo
6:42 am - 12:05 pm
STL
-
FCO
22h 23m
1 stop
British Airways Logo
1:30 pm - 10:40 pm
FCO
-
STL
16h 10m
1 stop
$803British Airways
qua, ago 5 - qua, ago 19
American Airlines Logo
1:37 pm - 9:10 am
STL
-
FCO
12h 33m
1 stop
American Airlines Logo
1:30 pm - 11:51 pm
FCO
-
STL
17h 21m
2 stops
$813American Airlines
qua, ago 5 - qua, ago 19
Lufthansa Logo
1:18 pm - 10:00 am
STL
-
FCO
13h 42m
2 stops
Lufthansa Logo
10:00 am - 11:00 pm
FCO
-
STL
20h 00m
2 stops
$819Lufthansa
seg, ago 17 - qui, ago 27
American Airlines Logo
9:35 pm - 7:05 pm
STL
-
ATH
13h 30m
1 stop
American Airlines Logo
2:05 pm - 11:42 pm
ATH
-
STL
17h 37m
1 stop
$839American Airlines
ter, ago 25 - qui, set 3
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
$905Lufthansa
qua, ago 19 - sex, ago 28

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Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets
Lufthansa
Sep 1
STL1:18 pmLambert-St Louis
26h 57m
2 stops
DUB10:15 pmDublin
Sep 7
DUB5:35 pmDublin
25h 50m
1 stop
STL1:25 pmLambert-St Louis
$737
Lufthansa
Aug 17
STL1:18 pmLambert-St Louis
13h 42m
2 stops
FCO10:00 amRome Fiumicino
Aug 27
FCO10:00 amRome Fiumicino
20h 00m
2 stops
STL11:00 pmLambert-St Louis
$819
Lufthansa
Apr 26
STL6:55 pmLambert-St Louis
20h 10m
2 stops
ATH11:05 pmAthens Eleftherios V.
Oct 1
ATH6:35 amAthens Eleftherios V.
17h 03m
2 stops
STL3:38 pmLambert-St Louis
$1,129

Alaska Airlines flights from St. Louis to Europe

Our best Alaska Airlines deals on St. Louis to Europe flight tickets
Alaska Airlines
Aug 17
STL6:02 amLambert-St Louis
21h 48m
2 stops
FRA10:50 amFrankfurt am Main
Aug 31
FRA11:30 amFrankfurt am Main
36h 33m
1 stop
STL5:03 pmLambert-St Louis
$1,226
Alaska Airlines
Apr 29
STL7:00 amLambert-St Louis
22h 55m
2 stops
FRA12:55 pmFrankfurt am Main
May 5
FRA2:15 pmFrankfurt am Main
16h 44m
1 stop
STL11:59 pmLambert-St Louis
$1,301

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 16, 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
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

qua 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

ter 9/15

6:00 am-1:25 pm

1 stop13h 25m

$669

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

qua 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

ter 9/15

6:00 am-1:25 pm

1 stop13h 25m

$671

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

ter 9/1

8:55 am-8:15 am

1 stop17h 20m

Dublin

qua 9/9

9:20 am-11:50 pm

2 stops44h 30m

$688

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

qua 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

ter 9/15

9:20 am-6:41 pm

1 stop15h 21m

$691

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

qua 8/5

10:22 am-10:20 am

1 stop16h 58m

Rome Fiumicino

qua 8/19

1:30 pm-10:40 pm

1 stop16h 10m

$786

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

qua 8/5

6:42 am-12:05 pm

1 stop22h 23m

Rome Fiumicino

qua 8/19

1:30 pm-10:40 pm

1 stop16h 10m

$803

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

qua 8/5

1:37 pm-9:10 am

1 stop12h 33m

Rome Fiumicino

qua 8/19

1:30 pm-11:51 pm

2 stops17h 21m

$813

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

seg 8/17

1:18 pm-10:00 am

2 stops13h 42m

Rome Fiumicino

qui 8/27

10:00 am-11:00 pm

2 stops20h 00m

$819

St. LouisAthens

STL - ATH

STLATH

Lambert-St Louis

ter 8/25

9:35 pm-7:05 pm

1 stop13h 30m

Athens Eleftherios V.

qui 9/3

2:05 pm-11:42 pm

1 stop17h 37m

$839

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

qua 8/19

3:30 pm-5:55 pm

1 stop20h 25m

London City

sex 8/28

9:15 am-11:00 pm

2 stops19h 45m

$905

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 $693. 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 $846 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 $700 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 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

$466

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 $466. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $963.
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
8,412 reviews
Search Delta flights
American AirlinesPriceFrom $390Free CancellationRating
7.1
11,590 reviews
Search American Airlines flights
British AirwaysPriceFrom $470Free CancellationRating
6.7
7,890 reviews
Search British Airways flights
LufthansaPriceFrom $503Free CancellationRating
6.8
7,926 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.8
1,499 reviews
Search KLM flights
IberiaPriceFrom $552Free CancellationRating
7.0
3,180 reviews
Search Iberia flights
United AirlinesPriceFrom $555Free CancellationRating
7.4
9,598 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $561Free CancellationRating
7.3
1,750 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
10,930 reviews
Search Air Canada flights
Air FrancePriceFrom $616Free CancellationRating
7.4
1,572 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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