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

Air Canada, British Airways, and Aer Lingus are the most popular carriers operating from Lambert-St Louis to Europe

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 32% 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.

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.

$255 Cheap Flights from St. Louis to Europe in 2025

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Find the cheapest flights from St. Louis to Europe

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Europe.

4:05 pm - 7:50 amSTL-BCN

32h 45m2 stops

12:15 pm - 3:38 pmBCN-STL

34h 23m2 stops

$601Air Canada

Find Deal

mar., sep. 16 - mié., oct. 1

4:05 pm - 7:50 amSTL-BCN

32h 45m2 stops

12:15 pm - 7:57 pmBCN-STL

14h 42m1 stop

$614Air Canada

Find Deal

mar., sep. 16 - mié., oct. 1

7:20 am - 9:20 amSTL-BCN

19h 00m1 stop

11:35 am - 6:02 pmBCN-STL

13h 27m1 stop

$622Delta

Find Deal

mié., sep. 17 - jue., oct. 2

6:00 am - 6:00 amSTL-BCN

17h 00m2 stops

9:30 am - 11:39 pmBCN-STL

21h 09m1 stop

$627Delta

Find Deal

mié., sep. 17 - jue., oct. 2

5:30 pm - 4:55 pmSTL-DUB

17h 25m2 stops

5:45 pm - 3:44 pmDUB-STL

27h 59m2 stops

$633Lufthansa

Find Deal

mié., ago. 20 - lun., ago. 25

7:34 am - 7:20 amSTL-FRA

16h 46m1 stop

10:45 am - 10:16 amFRA-STL

30h 31m1 stop

$656American Airlines

Find Deal

mié., sep. 24 - mié., oct. 8

1:30 pm - 7:50 amSTL-BCN

11h 20m1 stop

12:15 pm - 7:57 pmBCN-STL

14h 42m1 stop

$657United Airlines

Find Deal

vie., sep. 19 - vie., oct. 3

1:30 pm - 7:45 amSTL-DUB

12h 15m1 stop

9:20 am - 8:00 pmDUB-STL

16h 40m1 stop

$660United Airlines

Find Deal

mié., jul. 30 - jue., ago. 7

7:30 am - 8:45 amSTL-FRA

18h 15m1 stop

6:35 am - 5:20 pmFRA-STL

17h 45m2 stops

$686American Airlines

Find Deal

mié., oct. 1 - mié., oct. 15

5:30 pm - 9:40 pmSTL-BCN

21h 10m2 stops

1:30 pm - 3:38 pmBCN-STL

33h 08m2 stops

$723Lufthansa

Find Deal

vie., sep. 19 - lun., sep. 29

Air Canada flights from St. Louis to Europe

Our best Air Canada deals on St. Louis to Europe flight tickets

Air Canada

Sep 16

STL4:05 pmLambert-St Louis

32h 45m

2 stops

BCN7:50 amBarcelona-El Prat

Oct 1

BCN12:15 pmBarcelona-El Prat

34h 23m

2 stops

STL3:38 pmLambert-St Louis

$601

Find similar

Air Canada

Sep 16

STL4:05 pmLambert-St Louis

32h 45m

2 stops

BCN7:50 amBarcelona-El Prat

Oct 1

BCN12:15 pmBarcelona-El Prat

14h 42m

1 stop

STL7:57 pmLambert-St Louis

$614

Find similar

Air Canada

Sep 19

STL1:30 pmLambert-St Louis

11h 20m

1 stop

BCN7:50 amBarcelona-El Prat

Oct 2

BCN12:15 pmBarcelona-El Prat

34h 23m

2 stops

STL3:38 pmLambert-St Louis

$645

Find similar

Delta flights from St. Louis to Europe

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

Delta

Sep 17

STL7:20 amLambert-St Louis

19h 00m

1 stop

BCN9:20 amBarcelona-El Prat

Oct 2

BCN11:35 amBarcelona-El Prat

13h 27m

1 stop

STL6:02 pmLambert-St Louis

$622

Find similar

Delta

Sep 17

STL6:00 amLambert-St Louis

17h 00m

2 stops

BCN6:00 amBarcelona-El Prat

Oct 2

BCN9:30 amBarcelona-El Prat

21h 09m

1 stop

STL11:39 pmLambert-St Louis

$627

Find similar

Delta

Sep 17

STL11:51 amLambert-St Louis

14h 29m

1 stop

BCN9:20 amBarcelona-El Prat

Sep 30

BCN2:10 pmBarcelona-El Prat

25h 39m

1 stop

STL8:49 amLambert-St Louis

$628

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 $804 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	$255
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 $255. The best round-trip flight deal from St. Louis to Europe found on momondo in the last 72 hours is $601.

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), Frankfurt am Main (FRA), Paris Charles de Gaulle (CDG), Lisbon Humberto Delgado (LIS), London Heathrow (LHR), Barcelona-El Prat (BCN), 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 6,794 reviews	Search British Airways flights
Lufthansa	PriceFrom $527	Free Cancellation	Rating 6.7 7,023 reviews	Search Lufthansa flights
KLM	PriceFrom $540	Free Cancellation	Rating 7.8 1,331 reviews	Search KLM flights
Delta	PriceFrom $541	Free Cancellation	Rating 8.0 7,920 reviews	Search Delta flights
Iberia	PriceFrom $553	Free Cancellation	Rating 7.0 2,682 reviews	Search Iberia flights
Air France	PriceFrom $571	Free Cancellation	Rating 7.4 1,441 reviews	Search Air France flights
American Airlines	PriceFrom $576	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air Canada	PriceFrom $591	Free Cancellation	Rating 7.0 9,180 reviews	Search Air Canada flights
United Airlines	PriceFrom $594	Free Cancellation	Rating 7.4 8,684 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $603	Free Cancellation	Rating 7.3 1,342 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.