Question 1

What is the cheapest flight from Barcelona-El Prat Airport to St. Louis?

Accepted Answer

In the last 3 days, the lowest price for a flight from Barcelona-El Prat Airport to St. Louis was $504 for a one-way ticket and $862 for a round-trip. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between Barcelona and St. Louis?

Accepted Answer

A passport is required to fly from Barcelona to St. Louis. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 3

Which aircraft models fly most regularly from Barcelona to St. Louis?

Accepted Answer

We unfortunately don’t have that data for this specific route.

Question 4

What is the cheapest month to fly from Barcelona-El Prat Airport to St. Louis?

Accepted Answer

The cheapest month for flights from Barcelona-El Prat Airport to St. Louis is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,128 and $1,117 respectively.

Question 5

What is the cheapest month to fly from Barcelona-El Prat Airport to St. Louis?

Accepted Answer

The cheapest month for flights from Barcelona-El Prat Airport to St. Louis is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,128 and $1,117 respectively.

Question 6

How does KAYAK find such low prices on flights from Barcelona to St. Louis?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Barcelona to St. Louis. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 7

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Barcelona to St. Louis?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Barcelona is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 8

What is the Hacker Fare option on flights from Barcelona to St. Louis?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Barcelona with another airline. Booking your flights between Barcelona and STL can sometimes prove cheaper using this method. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 9

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Barcelona to St. Louis?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Barcelona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Barcelona-El-Prat-BCN/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 10

What is the cheapest layover airport when flying from Barcelona to St. Louis?

Accepted Answer

Flights via Philadelphia (PHL) offer the most affordable fares, with an average round-trip price of $667.

Question 11

What is the most popular layover airport when flying from Barcelona to St. Louis?

Accepted Answer

Montreal (YUL) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Barcelona to St. Louis picked an itinerary connecting there.

Question 12

Which layover airport has the quickest connection when flying from Barcelona to St. Louis?

Accepted Answer

If you prefer a quick connection, Philadelphia (PHL) often has the shortest layovers from Barcelona to St. Louis, with an average of 2h 30m.

Question 13

Which layover airport offers the shortest total travel time from Barcelona to St. Louis?

Accepted Answer

Consider flying via Montreal (YUL) for the shortest journey. The average one-way travel time for flights connecting there is 14h 48m.

Question 14

Which airlines provide the cheapest flights from Barcelona to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Barcelona to St. Louis were found on Lufthansa ($862) and Air Canada ($922).

Question 15

Which airlines provide the cheapest flights from Barcelona to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Barcelona to St. Louis were found on Lufthansa ($862) and Air Canada ($922).

Question 16

How much is a round-trip flight from Barcelona-El Prat Airport to St. Louis?

Accepted Answer

Flight prices are above average for this route right now.Flights to St. Louis from Barcelona-El Prat Airport usually cost between $859 and $797 in September.
The lowest price found in the past 3 days was $862 on Lufthansa (Sep 8-Oct 7).

Low season	November
High season	August
Cheapest flight	$504

BCN - STL

$504 Find Cheap Flights from Barcelona to St. Louis

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Everything you should know

Cheap Flights from Barcelona to St. Louis (BCN-STL)

Recent round-trip flight deals from Barcelona to St. Louis

Recent one-way flight deals from Barcelona to St. Louis

KAYAK's insights & trends for Barcelona to St. Louis flights

Get data-powered insights and trends into flights from Barcelona to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Barcelona-El Prat Airport to St. Louis?

What is the cheapest month to fly from Barcelona-El Prat Airport to St. Louis?

The cheapest month for flights from Barcelona-El Prat Airport to St. Louis is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,128 and $1,117 respectively.

Which airlines provide the cheapest flights from Barcelona to St. Louis?

In the past 3 days, the cheapest round-trip tickets from Barcelona to St. Louis were found on Lufthansa ($862) and Air Canada ($922).

What is the most popular layover airport when flying from Barcelona to St. Louis?

Montreal (YUL) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Barcelona to St. Louis picked an itinerary connecting there.

What is the cheapest layover airport when flying from Barcelona to St. Louis?

Flights via Philadelphia (PHL) offer the most affordable fares, with an average round-trip price of $667.

Which layover airport offers the shortest total travel time from Barcelona to St. Louis?

Consider flying via Montreal (YUL) for the shortest journey. The average one-way travel time for flights connecting there is 14h 48m.

Which layover airport has the quickest connection when flying from Barcelona to St. Louis?

If you prefer a quick connection, Philadelphia (PHL) often has the shortest layovers from Barcelona to St. Louis, with an average of 2h 30m.

Good to know

When to book flights from Barcelona to St. Louis

FAQs for booking Barcelona to St. Louis flights

What is the cheapest flight from Barcelona-El Prat Airport to St. Louis?

In the last 3 days, the lowest price for a flight from Barcelona-El Prat Airport to St. Louis was $504 for a one-way ticket and $862 for a round-trip.

Do I need a passport to fly between Barcelona and St. Louis?

A passport is required to fly from Barcelona to St. Louis.

Which aircraft models fly most regularly from Barcelona to St. Louis?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Barcelona to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Barcelona to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Barcelona to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Barcelona is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Barcelona to St. Louis?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Barcelona to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Barcelona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Barcelona to St. Louis

Information on your arrival and departure airports

Cabin class types available on flights to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Find direct flights to and from Barcelona and St. Louis

Flights to other popular destinations

Flights from domestic origins to St. Louis

Choose which airport to fly into in Barcelona

Find deals for your return flight