What airlines fly to Europe?

American Airlines, United Airlines and British Airways are the top three most popular airlines that fly to Europe from St. Louis according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Europe. Keep in mind that there are 12 different airlines that fly to Europe on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Europe?

Air Canada, Delta, and KLM are the most popular carriers operating from Lambert-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?

As of April 2025, there are 12 operators available to choose from 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.

$304 Cheap Flights from St. Louis to Europe - Save in Minutes

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Find the cheapest flights from St. Louis to Europe

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Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Europe that have been recently found on momondo from popular airlines, departing in the coming months.

1:30 pm - 7:45 amSTL-DUB

12h 15m1 stop

9:50 am - 7:40 pmDUB-STL

15h 50m1 stop

$606United Airlines

Find Deal

Fri, Aug 1 - Fri, Aug 22

1:30 pm - 7:45 amSTL-DUB

12h 15m1 stop

9:20 am - 8:00 pmDUB-STL

16h 40m1 stop

$650Air Canada

Find Deal

Fri, Aug 15 - Mon, Aug 25

6:00 am - 11:10 amSTL-ATH

21h 10m1 stop

1:00 pm - 8:16 pmATH-STL

15h 16m1 stop

$657British Airways

Find Deal

Wed, Oct 22 - Tue, Nov 4

1:22 pm - 11:10 amSTL-ATH

13h 48m1 stop

7:55 pm - 8:00 pmATH-STL

32h 05m2 stops

$661British Airways

Find Deal

Wed, Oct 22 - Tue, Nov 4

11:51 am - 10:00 amSTL-LGW

16h 09m2 stops

12:00 pm - 11:39 pmLGW-STL

17h 39m2 stops

$720Delta

Find Deal

Wed, Aug 27 - Mon, Sep 8

1:30 pm - 10:00 amSTL-LGW

14h 30m2 stops

12:00 pm - 11:01 pmLGW-STL

17h 01m2 stops

$750Delta

Find Deal

Mon, Aug 25 - Thu, Sep 4

3:30 pm - 4:55 pmSTL-DUB

19h 25m1 stop

5:55 am - 3:44 pmDUB-STL

15h 49m2 stops

$761Lufthansa

Find Deal

Fri, Aug 15 - Sun, Aug 24

5:30 pm - 7:15 pmSTL-DUB

19h 45m2 stops

5:55 am - 3:44 pmDUB-STL

15h 49m2 stops

$776Lufthansa

Find Deal

Fri, Aug 15 - Sun, Aug 24

7:23 am - 9:10 amSTL-FCO

18h 47m1 stop

10:20 am - 8:19 pmFCO-STL

16h 59m1 stop

$874American Airlines

Find Deal

Fri, Sep 26 - Fri, Oct 10

8:35 am - 5:10 amSTL-DUB

14h 35m1 stop

4:40 pm - 11:51 pmDUB-STL

13h 11m1 stop

$876American Airlines

Find Deal

Fri, Aug 15 - Sun, Aug 24

Scandinavian Airlines flights from St. Louis to Europe

Our best Scandinavian Airlines deals on St. Louis to Europe flight tickets

Scandinavian Airlines

Oct 14

STL1:30 pmLambert-St Louis

20h 30m

2 stops

LHR4:00 pmLondon Heathrow

Oct 22

LHR7:05 amLondon Heathrow

22h 34m

3 stops

STL11:39 pmLambert-St Louis

$708

Find similar

Scandinavian Airlines

Oct 15

STL3:30 pmLambert-St Louis

21h 15m

2 stops

FRA7:45 pmFrankfurt am Main

Oct 21

FRA3:20 pmFrankfurt am Main

39h 19m

2 stops

STL11:39 pmLambert-St Louis

$729

Find similar

Scandinavian Airlines

Aug 14

STL1:30 pmLambert-St Louis

26h 10m

2 stops

LHR9:40 pmLondon Heathrow

Aug 20

LHR6:40 amLondon Heathrow

22h 59m

2 stops

STL11:39 pmLambert-St Louis

$732

Find similar

Lufthansa flights from St. Louis to Europe

Our best Lufthansa deals on St. Louis to Europe flight tickets

Lufthansa

Aug 15

STL3:30 pmLambert-St Louis

19h 25m

1 stop

DUB4:55 pmDublin

Aug 24

DUB5:55 amDublin

15h 49m

2 stops

STL3:44 pmLambert-St Louis

$761

Find similar

Lufthansa

Aug 15

STL5:30 pmLambert-St Louis

19h 45m

2 stops

DUB7:15 pmDublin

Aug 24

DUB5:55 amDublin

15h 49m

2 stops

STL3:44 pmLambert-St Louis

$776

Find similar

Lufthansa

Sep 14

STL5:30 pmLambert-St Louis

19h 05m

2 stops

LCY6:35 pmLondon City

Sep 23

LCY8:45 amLondon City

34h 45m

1 stop

STL1:30 pmLambert-St Louis

$834

Find similar

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

Prices

Airlines

Other information

What is the cheapest month to fly to Europe?

The cheapest month to fly to Europe from St. Louis is in April. Flight prices, which tend to average around $773, 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 April, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $785.

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 Wednesday. Travelers who choose to depart for Europe on a Wednesday will often find tickets for as low as $846. Flights from St. Louis to Europe on a Tuesday will generally be more expensive and average around $1,006. 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 morning. momondo users have found flights departing from St. Louis to Europe in the morning for as low as $915. 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 Frankfurt am Main 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 9 weeks ahead of your departure date. In general, you can expect to find flights to Europe for around $956 when searching 9 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 $805 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.

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	$304
Fastest flight time	8h 55m
Direct flights	Mon, Thu and Sat
Airports in Europe	7 airports

The best one-way flight to Europe from St. Louis in the past 72 hours is $304. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $606.

The fastest flight from St. Louis to Europe takes 8h 55m

Direct flights go from St. Louis to Europe on Monday, Thursday and Saturday. Airlines offering direct flights are: United Airlines and Lufthansa.

There are 7 airports near Europe: Dublin (DUB), Rome Fiumicino (FCO), Frankfurt am Main (FRA), Athens Eleftherios V. (ATH), London Heathrow (LHR), Paris Charles de Gaulle (CDG), London Gatwick (LGW)

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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?
As of April 2025, there are 12 operators available to choose from 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 Airways	PriceFrom $469	Free Cancellation	Rating 6.6 6,835 reviews	Search British Airways flights
Lufthansa	PriceFrom $527	Free Cancellation	Rating 6.7 7,044 reviews	Search Lufthansa flights
KLM	PriceFrom $540	Free Cancellation	Rating 7.8 1,334 reviews	Search KLM flights
Iberia	PriceFrom $553	Free Cancellation	Rating 7.0 2,698 reviews	Search Iberia flights
American Airlines	PriceFrom $576	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $590	Free Cancellation	Rating 8.0 7,929 reviews	Search Delta flights
Air Canada	PriceFrom $591	Free Cancellation	Rating 7.0 9,240 reviews	Search Air Canada flights
United Airlines	PriceFrom $594	Free Cancellation	Rating 7.4 8,696 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $603	Free Cancellation	Rating 7.3 1,349 reviews	Search Scandinavian Airlines flights
Austrian Airlines	PriceFrom $611	Free Cancellation	Rating 7.5 780 reviews	Search Austrian 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.