Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Barcelona from $326

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:08 pm - 1:15 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
17h 07m1 stop Chicago O'Hare Intl
United Airlines Logo
1:35 pm - 9:40 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
39h 05m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$555United Airlines
Wed, Nov 4 - Wed, Nov 11
Air Canada Logo
6:50 pm - 9:35 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
31h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
1:35 pm - 9:40 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
39h 05m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$558Air Canada
Mon, Nov 9 - Wed, Nov 18
Air Canada Logo
6:00 am - 9:35 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
20h 35m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
1:35 pm - 9:40 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
39h 05m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$558Air Canada
Wed, Nov 4 - Wed, Nov 11
Multiple Airlines Logo
12:10 pm - 8:00 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
12h 50m1 stop Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
1:15 pm - 2:00 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
31h 45m1 stop Toronto Pearson Intl
$559Multiple Airlines
Mon, Oct 12 - Wed, Oct 21
United Airlines Logo
5:36 pm - 1:15 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
12h 39m1 stop Chicago O'Hare Intl
United Airlines Logo
1:15 pm - 2:17 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
32h 02m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$560United Airlines
Tue, Oct 13 - Thu, Oct 22
Multiple Airlines Logo
8:55 am - 8:00 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
16h 05m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
1:15 pm - 8:20 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
14h 05m1 stop Toronto Pearson Intl
$566Multiple Airlines
Mon, Oct 12 - Wed, Oct 21
British Airways Logo
5:29 pm - 4:10 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
15h 41m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
10:40 am - 11:33 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
$572British Airways
Mon, Nov 9 - Wed, Nov 18
British Airways Logo
5:29 pm - 6:30 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
18h 01m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
10:40 am - 11:33 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
$572British Airways
Wed, Nov 4 - Tue, Nov 10
American Airlines Logo
1:15 pm - 11:20 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
15h 05m2 stops Philadelphia London Heathrow
American Airlines Logo
11:00 am - 9:47 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
17h 47m1 stop Miami
$572American Airlines
Wed, Nov 4 - Wed, Nov 11
American Airlines Logo
1:15 pm - 11:20 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
15h 05m2 stops Philadelphia London Heathrow
American Airlines Logo
11:00 am - 9:47 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
17h 47m1 stop Miami
$572American Airlines
Wed, Nov 4 - Tue, Nov 10

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

United Airlines flights from St. Louis to Barcelona-El Prat Airport

Our best United Airlines deals on St. Louis to Barcelona-El Prat Airport flight tickets
United Airlines
Nov 4
STL1:08 pmLambert-St Louis
17h 07m
1 stop
BCN1:15 pmBarcelona-El Prat
Nov 11
BCN1:35 pmBarcelona-El Prat
39h 05m
2 stops
STL9:40 pmLambert-St Louis
$555
United Airlines
Oct 13
STL5:36 pmLambert-St Louis
12h 39m
1 stop
BCN1:15 pmBarcelona-El Prat
Oct 22
BCN1:15 pmBarcelona-El Prat
32h 02m
2 stops
STL2:17 pmLambert-St Louis
$560
United Airlines
Oct 12
STL6:00 amLambert-St Louis
24h 15m
1 stop
BCN1:15 pmBarcelona-El Prat
Oct 21
BCN1:15 pmBarcelona-El Prat
31h 45m
1 stop
STL2:00 pmLambert-St Louis
$561

Lufthansa flights from St. Louis to Barcelona-El Prat Airport

Our best Lufthansa deals on St. Louis to Barcelona-El Prat Airport flight tickets
Lufthansa
Nov 9
STL6:50 pmLambert-St Louis
11h 25m
1 stop
BCN1:15 pmBarcelona-El Prat
Nov 18
BCN1:35 pmBarcelona-El Prat
33h 08m
2 stops
STL3:43 pmLambert-St Louis
$574
Lufthansa
Oct 5
STL1:29 pmLambert-St Louis
14h 36m
2 stops
BCN11:05 amBarcelona-El Prat
Oct 13
BCN6:40 pmBarcelona-El Prat
28h 03m
2 stops
STL3:43 pmLambert-St Louis
$685
Lufthansa
Oct 2
STL11:10 amLambert-St Louis
17h 45m
2 stops
BCN11:55 amBarcelona-El Prat
Oct 6
BCN3:15 pmBarcelona-El Prat
13h 06m
1 stop
STL9:21 pmLambert-St Louis
$854

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

1:08 pm-1:15 pm

1 stop17h 07m

Barcelona-El Prat

Wed 11/11

1:35 pm-9:40 pm

2 stops39h 05m

$555

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 11/9

6:50 pm-9:35 am

2 stops31h 45m

Barcelona-El Prat

Wed 11/18

1:35 pm-9:40 pm

2 stops39h 05m

$558

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

6:00 am-9:35 am

2 stops20h 35m

Barcelona-El Prat

Wed 11/11

1:35 pm-9:40 pm

2 stops39h 05m

$558

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/12

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Wed 10/21

1:15 pm-2:00 pm

1 stop31h 45m

$559

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Tue 10/13

5:36 pm-1:15 pm

1 stop12h 39m

Barcelona-El Prat

Thu 10/22

1:15 pm-2:17 pm

2 stops32h 02m

$560
Quickest round-trip

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/12

8:55 am-8:00 am

2 stops16h 05m

Barcelona-El Prat

Wed 10/21

1:15 pm-8:20 pm

1 stop14h 05m

$566

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 11/9

5:29 pm-4:10 pm

2 stops15h 41m

Barcelona-El Prat

Wed 11/18

10:40 am-11:33 pm

1 stop19h 53m

$572

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

5:29 pm-6:30 pm

2 stops18h 01m

Barcelona-El Prat

Tue 11/10

10:40 am-11:33 pm

1 stop19h 53m

$572

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

1:15 pm-11:20 am

2 stops15h 05m

Barcelona-El Prat

Wed 11/11

11:00 am-9:47 pm

1 stop17h 47m

$572

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

1:15 pm-11:20 am

2 stops15h 05m

Barcelona-El Prat

Tue 11/10

11:00 am-9:47 pm

1 stop17h 47m

$572

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Barcelona from

How to get the cheapest flight ticket from St. Louis to Barcelona-El Prat Airport

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 typical price of a round-trip flight between St. Louis and Barcelona-El Prat Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $755 to $1,053.
The lowest price recently found on this route was $555.

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from St. Louis is in January. Flight prices, which tend to average around $558, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from St. Louis during April instead. Flights to Barcelona-El Prat Airport in April, while not as cheap as those in January, still average around $634.

How far in advance should I book a flight from St. Louis to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $923 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from St. Louis for as low as $557 on momondo.

Can stopping save me money on St. Louis to Barcelona-El Prat Airport flights?

You could potentially save up to 24% on your flight if you consider stops on a St. Louis to Barcelona-El Prat Airport flight.

How have St. Louis to Barcelona-El Prat Airport flight prices changed over time?

As of September 2026, prices for St. Louis to Barcelona-El Prat Airport flights are approximately 49% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Barcelona-El Prat Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Barcelona-El Prat Airport (STL to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Barcelona-El Prat Airport

Best Price Found

$326

Fastest flight time

13h 35m

Direct flights

None
The best one-way flight to Barcelona-El Prat Airport from St. Louis in the past 72 hours is $326. The best round-trip flight deal from St. Louis to Barcelona-El Prat Airport found on momondo in the last 72 hours is $555.
The fastest flight from St. Louis to Barcelona-El Prat Airport takes 13h 35m
There are no direct flights from St. Louis to Barcelona-El Prat Airport. There are no popular flight routes from St. Louis to Barcelona-El Prat Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to Barcelona-El Prat Airport

  • How far is Lambert-St Louis to Barcelona-El Prat by plane?

    There are 4635.1 mi between Lambert-St Louis and Barcelona-El Prat. Flights usually cover this in 13h 35m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport?

    Prices for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Barcelona-El Prat Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The travel and health documents required for your trip to Barcelona-El Prat Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Barcelona-El Prat Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Barcelona-El Prat Airport?

Best airlines flying from St. Louis to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from St. Louis to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $510Free CancellationRating
6.8
8,238 reviews
Search Lufthansa flights
British AirwaysPriceFrom $540Free CancellationRating
6.7
8,229 reviews
Search British Airways flights
DeltaPriceFrom $552Free CancellationRating
7.8
8,594 reviews
Search Delta flights
American AirlinesPriceFrom $629Free CancellationRating
7.0
12,081 reviews
Search American Airlines flights
Air CanadaPriceFrom $648Free CancellationRating
7.1
11,667 reviews
Search Air Canada flights
United AirlinesPriceFrom $654Free CancellationRating
7.4
10,230 reviews
Search United Airlines flights
IberiaPriceFrom $732Free CancellationRating
7.0
3,249 reviews
Search Iberia flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Sitges
Lloret de Mar
Salou
Tarragona
El Prat de Llobregat
Castelldefels
L'Hospitalet de Llobregat
Tossa de Mar
Cambrils
Calella
Badalona
Roses
Empuriabrava
Cadaques
Calella de Palafrugell
Santa Susanna
Malgrat de Mar
L'Estartit
Pals
La Pineda

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Barcelona?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Barcelona. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Barcelona with flexible booking policies on momondo?

Flights from St. Louis to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Barcelona?

Once all potential St. Louis to Barcelona flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Barcelona right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Barcelona flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Barcelona-El Prat Airport 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
Thu 10/22
Thu 10/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Barcelona

Popular cities in Spain

Flights to Girona Costa Brava Airport