Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Europe from $234

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 12/12. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Europe

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Austrian Airlines Logo
9:30 am - 11:57 pmDUB-STL
20h 27m1 stop
$392Austrian Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 24
Austrian Airlines Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Austrian Airlines Logo
9:30 am - 11:42 pmDUB-STL
20h 12m1 stop
$430Austrian Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Lufthansa Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Lufthansa Logo
10:40 am - 5:03 pmDUB-STL
12h 23m1 stop
$431Lufthansa
Find Deal
Wed, Dec 3 - Wed, Dec 10
Lufthansa Logo
1:00 pm - 8:10 amSTL-DUB
13h 10m1 stop
Lufthansa Logo
10:40 am - 5:03 pmDUB-STL
12h 23m1 stop
$432Lufthansa
Find Deal
Fri, Dec 5 - Wed, Dec 10
United Airlines Logo
8:00 am - 8:10 amSTL-DUB
18h 10m1 stop
United Airlines Logo
9:00 am - 4:28 pmDUB-STL
37h 28m2 stops
$455United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
11:25 am - 4:20 pmSTL-BCN
21h 55m2 stops
United Airlines Logo
1:35 pm - 10:00 pmBCN-STL
39h 25m2 stops
$456United Airlines
Find Deal
Thu, Feb 12 - Tue, Feb 17
Air Canada Logo
6:40 pm - 9:35 amSTL-BCN
31h 55m2 stops
Air Canada Logo
1:35 pm - 9:00 pmBCN-STL
38h 25m2 stops
$461Air Canada
Find Deal
Sun, Feb 1 - Tue, Feb 17
Air Canada Logo
6:42 pm - 7:10 amSTL-DUB
30h 28m2 stops
Air Canada Logo
9:00 am - 2:23 pmDUB-STL
35h 23m2 stops
$462Air Canada
Find Deal
Wed, Dec 3 - Sun, Dec 7
American Airlines Logo
9:33 am - 8:20 amSTL-CDG
15h 47m1 stop
American Airlines Logo
11:45 am - 9:15 pmCDG-STL
16h 30m2 stops
$518American Airlines
Find Deal
Wed, Jan 21 - Thu, Jan 29
American Airlines Logo
5:05 am - 9:15 amSTL-CDG
21h 10m1 stop
American Airlines Logo
11:25 am - 10:44 pmCDG-STL
18h 19m1 stop
$522American Airlines
Find Deal
Wed, Jan 21 - Thu, Jan 29

Iberia flights from St. Louis to Europe

Our best Iberia deals on St. Louis to Europe flight tickets
Iberia
Jan 23
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 11
BCN12:30 pmBarcelona-El Prat
17h 14m
1 stop
STL10:44 pmLambert-St Louis
$473
Find similar
Iberia
Feb 22
STL6:00 amLambert-St Louis
20h 40m
1 stop
DUB8:40 amDublin
Feb 28
DUB9:40 amDublin
38h 23m
2 stops
STL6:03 pmLambert-St Louis
$505
Find similar
Iberia
Feb 2
STL11:55 amLambert-St Louis
21h 20m
2 stops
BCN4:15 pmBarcelona-El Prat
Feb 7
BCN9:15 pmBarcelona-El Prat
32h 44m
2 stops
STL10:59 pmLambert-St Louis
$572
Find similar

United Airlines flights from St. Louis to Europe

Our best United Airlines deals on St. Louis to Europe flight tickets
United Airlines
Dec 4
STL8:00 amLambert-St Louis
18h 10m
1 stop
DUB8:10 amDublin
Dec 8
DUB9:00 amDublin
37h 28m
2 stops
STL4:28 pmLambert-St Louis
$455
Find similar
United Airlines
Feb 12
STL11:25 amLambert-St Louis
21h 55m
2 stops
BCN4:20 pmBarcelona-El Prat
Feb 17
BCN1:35 pmBarcelona-El Prat
39h 25m
2 stops
STL10:00 pmLambert-St Louis
$456
Find similar
United Airlines
Dec 5
STL1:00 pmLambert-St Louis
14h 55m
2 stops
DUB9:55 amDublin
Dec 10
DUB9:00 amDublin
42h 58m
2 stops
STL9:58 pmLambert-St Louis
$460
Find similar

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 November 20, 2025.
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

Wed 12/10

11:50 am-7:30 am

1 stop13h 40m

Dublin

Wed 12/24

9:30 am-11:57 pm

1 stop20h 27m

$392

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/9

11:50 am-7:30 am

1 stop13h 40m

Dublin

Tue 12/16

9:30 am-11:42 pm

1 stop20h 12m

$430

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/3

11:50 am-7:30 am

1 stop13h 40m

Dublin

Wed 12/10

10:40 am-5:03 pm

1 stop12h 23m

$431

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 12/5

1:00 pm-8:10 am

1 stop13h 10m

Dublin

Wed 12/10

10:40 am-5:03 pm

1 stop12h 23m

$432

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 12/4

8:00 am-8:10 am

1 stop18h 10m

Dublin

Mon 12/8

9:00 am-4:28 pm

2 stops37h 28m

$455

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 2/12

11:25 am-4:20 pm

2 stops21h 55m

Barcelona-El Prat

Tue 2/17

1:35 pm-10:00 pm

2 stops39h 25m

$456

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 2/1

6:40 pm-9:35 am

2 stops31h 55m

Barcelona-El Prat

Tue 2/17

1:35 pm-9:00 pm

2 stops38h 25m

$461

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/3

6:42 pm-7:10 am

2 stops30h 28m

Dublin

Sun 12/7

9:00 am-2:23 pm

2 stops35h 23m

$462

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Wed 1/21

9:33 am-8:20 am

1 stop15h 47m

Paris Charles de Gaulle

Thu 1/29

11:45 am-9:15 pm

2 stops16h 30m

$518

St. LouisParis

STL - CDG

STLCDG

Lambert-St Louis

Wed 1/21

5:05 am-9:15 am

1 stop21h 10m

Paris Charles de Gaulle

Thu 1/29

11:25 am-10:44 pm

1 stop18h 19m

$522

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 November. Flight prices, which tend to average around $709, 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 November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $724.

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 $668. Flights from St. Louis to Europe on a Friday will generally be more expensive and average around $848. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Europe?

According to our data, the cheapest time of day to fly to Europe is in the evening. momondo users have found flights departing from St. Louis to Europe in the evening for as low as $781. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $958. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $900 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 $731 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 32% 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

$418

Fastest flight time

8h 05m

Direct flights

Mon, Wed, Thu and Sat

Airports in Europe

2 airports
The best one-way flight to Europe from St. Louis in the past 72 hours is $418. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $598.
The fastest flight from St. Louis to Europe takes 8h 05m
Direct flights go from St. Louis to Europe on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights.
There are 2 airports near Europe: 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 $488Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
LufthansaPriceFrom $524Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
KLMPriceFrom $529Free CancellationRating
7.7
1,412 reviews
Search KLM flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,533 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.9
8,002 reviews
Search Delta flights
Air CanadaPriceFrom $573Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,027 reviews
Search United Airlines flights
Air FrancePriceFrom $582Free CancellationRating
7.4
1,493 reviews
Search Air France flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,027 reviews
Search Iberia flights
Scandinavian AirlinesPriceFrom $602Free CancellationRating
7.4
1,584 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.

An easier way to manage your Europe trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/20
Sat 12/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Europe

Popular cities in Europe

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $328
Flights to Parisfrom $347
Flights to Copenhagenfrom $352
Flights to Istanbulfrom $375
Flights to Romefrom $323
Flights to Barcelonafrom $286
Flights to Athensfrom $335
Flights to Madridfrom $309
Flights to Lisbonfrom $361
Flights to Stockholmfrom $334
Flights to Amsterdamfrom $404
Flights to Milanfrom $309