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Cheap flights from St. Louis to Europe from $275

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 4/29. 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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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.
United Airlines Logo
5:20 am - 7:45 am
STL
-
DUB
20h 25m
2 stops
United Airlines Logo
9:20 am - 10:06 pm
DUB
-
STL
42h 46m
2 stops
$460United Airlines
Tue, Aug 11 - Wed, Aug 19
United Airlines Logo
5:00 am - 9:45 am
STL
-
DUB
22h 45m
1 stop
United Airlines Logo
9:20 am - 10:06 pm
DUB
-
STL
42h 46m
2 stops
$464United Airlines
Tue, Aug 11 - Wed, Aug 19
British Airways Logo
9:35 pm - 2:35 pm
STL
-
DUB
11h 00m
1 stop
British Airways Logo
10:30 am - 7:30 pm
DUB
-
STL
15h 00m
1 stop
$472British Airways
Tue, Aug 18 - Tue, Aug 25
Air Canada Logo
6:30 am - 6:30 am
STL
-
LHR
18h 00m
2 stops
Air Canada Logo
8:40 am - 8:05 pm
LHR
-
STL
17h 25m
2 stops
$649Air Canada
Tue, Apr 28 - Wed, May 6
American Airlines Logo
11:22 am - 9:00 am
STL
-
LGW
16h 38m
2 stops
American Airlines Logo
10:45 am - 11:46 pm
LGW
-
STL
19h 01m
2 stops
$650American Airlines
Mon, Mar 23 - Tue, Apr 7
Lufthansa Logo
6:49 pm - 6:25 pm
STL
-
LHR
17h 36m
2 stops
Lufthansa Logo
7:30 pm - 1:25 pm
LHR
-
STL
23h 55m
1 stop
$652Lufthansa
Mon, Aug 17 - Mon, Aug 24
Air Canada Logo
6:30 am - 6:30 am
STL
-
LHR
18h 00m
2 stops
Air Canada Logo
8:45 am - 8:05 pm
LHR
-
STL
17h 20m
2 stops
$653Air Canada
Tue, Apr 21 - Thu, May 7
Lufthansa Logo
6:49 pm - 10:00 pm
STL
-
FCO
20h 11m
2 stops
Lufthansa Logo
6:50 am - 1:25 pm
FCO
-
STL
13h 35m
1 stop
$657Lufthansa
Tue, Aug 18 - Tue, Aug 25
British Airways Logo
9:35 pm - 10:35 pm
STL
-
FCO
18h 00m
1 stop
British Airways Logo
12:15 pm - 11:42 pm
FCO
-
STL
18h 27m
1 stop
$684British Airways
Tue, Aug 18 - Tue, Aug 25
American Airlines Logo
11:06 am - 11:20 am
STL
-
FCO
17h 14m
1 stop
American Airlines Logo
12:15 pm - 7:29 pm
FCO
-
STL
14h 14m
1 stop
$696American Airlines
Wed, Apr 15 - Wed, Apr 22

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets
Air Canada
Apr 8
STL10:00 amLambert-St Louis
15h 20m
2 stops
DUB7:20 amDublin
Apr 15
DUB9:50 amDublin
11h 34m
1 stop
STL3:24 pmLambert-St Louis
$533
Air Canada
Apr 26
STL4:05 pmLambert-St Louis
10h 10m
1 stop
DUB8:15 amDublin
May 3
DUB9:20 amDublin
40h 45m
2 stops
STL8:05 pmLambert-St Louis
$584
Air Canada
Aug 14
STL5:00 amLambert-St Louis
20h 45m
2 stops
DUB7:45 amDublin
Aug 21
DUB9:20 amDublin
10h 42m
1 stop
STL2:02 pmLambert-St Louis
$599

Virgin Atlantic flights from St. Louis to Europe

Our best Virgin Atlantic deals on St. Louis to Europe flight tickets
Virgin Atlantic
Apr 20
STL6:50 pmLambert-St Louis
28h 20m
1 stop
CDG6:10 amParis Charles de Gaulle
May 6
CDG9:30 amParis Charles de Gaulle
21h 06m
2 stops
STL11:36 pmLambert-St Louis
$637
Virgin Atlantic
Apr 14
STL11:42 amLambert-St Louis
11h 28m
1 stop
CDG6:10 amParis Charles de Gaulle
Apr 29
CDG7:30 amParis Charles de Gaulle
17h 14m
2 stops
STL5:44 pmLambert-St Louis
$644
Virgin Atlantic
Apr 20
STL4:41 pmLambert-St Louis
18h 04m
2 stops
CDG5:45 pmParis Charles de Gaulle
May 6
CDG9:30 amParis Charles de Gaulle
18h 14m
2 stops
STL8:44 pmLambert-St Louis
$646

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 February 24, 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

5:20 am-7:45 am

2 stops20h 25m

Dublin

Wed 8/19

9:20 am-10:06 pm

2 stops42h 46m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

5:00 am-9:45 am

1 stop22h 45m

Dublin

Wed 8/19

9:20 am-10:06 pm

2 stops42h 46m

$464

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/18

9:35 pm-2:35 pm

1 stop11h 00m

Dublin

Tue 8/25

10:30 am-7:30 pm

1 stop15h 00m

$472

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 4/28

6:30 am-6:30 am

2 stops18h 00m

London Heathrow

Wed 5/6

8:40 am-8:05 pm

2 stops17h 25m

$649

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 3/23

11:22 am-9:00 am

2 stops16h 38m

London Gatwick

Tue 4/7

10:45 am-11:46 pm

2 stops19h 01m

$650

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 8/17

6:49 pm-6:25 pm

2 stops17h 36m

London Heathrow

Mon 8/24

7:30 pm-1:25 pm

1 stop23h 55m

$652

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 4/21

6:30 am-6:30 am

2 stops18h 00m

London Heathrow

Thu 5/7

8:45 am-8:05 pm

2 stops17h 20m

$653

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

6:49 pm-10:00 pm

2 stops20h 11m

Rome Fiumicino

Tue 8/25

6:50 am-1:25 pm

1 stop13h 35m

$657

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Tue 8/18

9:35 pm-10:35 pm

1 stop18h 00m

Rome Fiumicino

Tue 8/25

12:15 pm-11:42 pm

1 stop18h 27m

$684

St. LouisRome

STL - FCO

STLFCO

Lambert-St Louis

Wed 4/15

11:06 am-11:20 am

1 stop17h 14m

Rome Fiumicino

Wed 4/22

12:15 pm-7:29 pm

1 stop14h 14m

$696

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 $699.

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 $688. Flights from St. Louis to Europe on a Saturday will generally be more expensive and average around $989. 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 $859 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 $786 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 47% 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

$436

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 $436. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $791.
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 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 $390Free CancellationRating
7.2
11,342 reviews
Search American Airlines flights
British AirwaysPriceFrom $458Free CancellationRating
6.7
7,762 reviews
Search British Airways flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,808 reviews
Search Lufthansa flights
KLMPriceFrom $507Free CancellationRating
7.7
1,460 reviews
Search KLM flights
DeltaPriceFrom $507Free CancellationRating
7.9
8,239 reviews
Search Delta flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
9,344 reviews
Search United Airlines flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,123 reviews
Search Iberia flights
Air CanadaPriceFrom $572Free CancellationRating
7.1
10,742 reviews
Search Air Canada flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,537 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $602Free CancellationRating
7.3
1,699 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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