Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Barcelona from $415

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 Barcelona departing on 11/11. 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 Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:17 pm - 7:05 pmSTL-BCN
18h 48m2 stops
Delta Logo
10:55 am - 11:40 pmBCN-STL
19h 45m1 stop
$465Delta
Find Deal
Wed, Nov 26 - Thu, Dec 4
American Airlines Logo
2:52 pm - 1:40 pmSTL-BCN
15h 48m2 stops
American Airlines Logo
11:00 am - 11:59 pmBCN-STL
19h 59m1 stop
$480American Airlines
Find Deal
Wed, Nov 19 - Thu, Dec 4
Air Canada Logo
6:30 am - 9:35 amSTL-BCN
20h 05m2 stops
Air Canada Logo
1:35 pm - 2:24 pmBCN-STL
31h 49m2 stops
$510Air Canada
Find Deal
Sat, Nov 8 - Fri, Nov 21
British Airways Logo
2:54 pm - 1:40 pmSTL-BCN
15h 46m2 stops
British Airways Logo
10:40 am - 4:14 pmBCN-STL
36h 34m1 stop
$517British Airways
Find Deal
Tue, Jan 6 - Tue, Jan 13
Iberia Logo
11:55 am - 8:50 amSTL-BCN
13h 55m1 stop
Iberia Logo
10:40 am - 10:59 pmBCN-STL
19h 19m1 stop
$528Iberia
Find Deal
Thu, Jan 15 - Sun, Feb 1
United Airlines Logo
12:31 pm - 1:00 pmSTL-BCN
17h 29m2 stops
United Airlines Logo
1:35 pm - 3:40 pmBCN-STL
33h 05m2 stops
$529United Airlines
Find Deal
Wed, Nov 19 - Thu, Dec 4
British Airways Logo
12:01 pm - 11:25 amSTL-BCN
16h 24m2 stops
British Airways Logo
10:40 am - 10:59 pmBCN-STL
19h 19m1 stop
$530British Airways
Find Deal
Thu, Jan 15 - Sun, Feb 1
United Airlines Logo
6:30 am - 9:35 amSTL-BCN
20h 05m2 stops
United Airlines Logo
6:50 am - 9:58 pmBCN-STL
22h 08m2 stops
$535United Airlines
Find Deal
Fri, Nov 28 - Fri, Dec 5
Air Canada Logo
4:05 pm - 9:35 amSTL-BCN
34h 30m2 stops
Air Canada Logo
6:50 am - 10:58 pmBCN-STL
23h 08m3 stops
$544Air Canada
Find Deal
Thu, Jan 15 - Sun, Feb 1
Iberia Logo
10:44 am - 9:00 amSTL-BCN
15h 16m1 stop
Iberia Logo
12:30 pm - 11:04 pmBCN-STL
17h 34m1 stop
$563Iberia
Find Deal
Sat, Nov 8 - Fri, Nov 21

Delta flights from St. Louis to Barcelona

Our best Delta deals on St. Louis to Barcelona flight tickets
Delta
Nov 26
STL5:17 pmLambert-St Louis
18h 48m
2 stops
BCN7:05 pmBarcelona-El Prat
Dec 4
BCN10:55 amBarcelona-El Prat
19h 45m
1 stop
STL11:40 pmLambert-St Louis
$465
Find similar
Delta
Mar 4
STL1:00 pmLambert-St Louis
12h 40m
1 stop
BCN8:40 amBarcelona-El Prat
Mar 10
BCN6:00 amBarcelona-El Prat
23h 40m
2 stops
STL11:40 pmLambert-St Louis
$589
Find similar
Delta
Nov 18
STL11:39 amLambert-St Louis
14h 01m
1 stop
BCN8:40 amBarcelona-El Prat
Nov 28
BCN6:00 amBarcelona-El Prat
24h 23m
2 stops
STL11:23 pmLambert-St Louis
$595
Find similar

American Airlines flights from St. Louis to Barcelona

Our best American Airlines deals on St. Louis to Barcelona flight tickets
American Airlines
Nov 19
STL2:52 pmLambert-St Louis
15h 48m
2 stops
BCN1:40 pmBarcelona-El Prat
Dec 4
BCN11:00 amBarcelona-El Prat
19h 59m
1 stop
STL11:59 pmLambert-St Louis
$480
Find similar
American Airlines
Nov 19
STL2:52 pmLambert-St Louis
15h 48m
2 stops
BCN1:40 pmBarcelona-El Prat
Dec 4
BCN12:30 pmBarcelona-El Prat
15h 58m
2 stops
STL9:28 pmLambert-St Louis
$485
Find similar
American Airlines
Nov 26
STL6:00 amLambert-St Louis
20h 00m
1 stop
BCN9:00 amBarcelona-El Prat
Dec 4
BCN12:30 pmBarcelona-El Prat
14h 51m
1 stop
STL8:21 pmLambert-St Louis
$533
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Barcelona 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 October 14, 2025.
Use the filters below to find and compare flights from St. Louis to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/26

5:17 pm-7:05 pm

2 stops18h 48m

Barcelona-El Prat

Thu 12/4

10:55 am-11:40 pm

1 stop19h 45m

$465

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/19

2:52 pm-1:40 pm

2 stops15h 48m

Barcelona-El Prat

Thu 12/4

11:00 am-11:59 pm

1 stop19h 59m

$480

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 11/8

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Fri 11/21

1:35 pm-2:24 pm

2 stops31h 49m

$510

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 1/6

2:54 pm-1:40 pm

2 stops15h 46m

Barcelona-El Prat

Tue 1/13

10:40 am-4:14 pm

1 stop36h 34m

$517

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

Sun 2/1

10:40 am-10:59 pm

1 stop19h 19m

$528

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/19

12:31 pm-1:00 pm

2 stops17h 29m

Barcelona-El Prat

Thu 12/4

1:35 pm-3:40 pm

2 stops33h 05m

$529

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

12:01 pm-11:25 am

2 stops16h 24m

Barcelona-El Prat

Sun 2/1

10:40 am-10:59 pm

1 stop19h 19m

$530

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 11/28

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Fri 12/5

6:50 am-9:58 pm

2 stops22h 08m

$535

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

4:05 pm-9:35 am

2 stops34h 30m

Barcelona-El Prat

Sun 2/1

6:50 am-10:58 pm

3 stops23h 08m

$544

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 11/8

10:44 am-9:00 am

1 stop15h 16m

Barcelona-El Prat

Fri 11/21

12:30 pm-11:04 pm

1 stop17h 34m

$563

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

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?

What is the cheapest month to fly to Barcelona?

The month of November is, on average, the cheapest month to fly to Barcelona from St. Louis, with most prices found around $623. If you don’t want to visit Barcelona in November, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $660.

What is the cheapest day to depart on your flight to Barcelona?

The cheapest day to depart from St. Louis to Barcelona is on a Tuesday when prices can be found for as low as $867. On the other hand, Thursday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,135.

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

In the morning is the cheapest time of day to fly from St. Louis to Barcelona when you can find flight prices for as low as $905. Flying to Barcelona in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,043 on average. Flights to Barcelona from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Barcelona?

You are more likely to see cheaper flights to Barcelona from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona for around $924 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona from St. Louis for as low as $736 on momondo.

Cheap St. Louis to Barcelona flight deals and tips

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

Direct flights

None
There are no direct flights from St. Louis to Barcelona. There are no popular flight routes from St. Louis to Barcelona.
Search flight deals

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

    The straight-line distance from Lambert-St Louis to Barcelona is 4636.1 mi. In terms of flight time, this usually takes a little over 11h 18m.

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

    Prices for flights from Lambert-St Louis Airport to Barcelona were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Barcelona.

  • What documentation or ID do you need to fly to Barcelona?

    The necessary travel and health documents for your Barcelona 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 Barcelona

Compare and see reviews for airlines that fly from St. Louis to Barcelona with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $552Free CancellationRating
7.9
7,977 reviews
Search Delta flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,977 reviews
Search United Airlines flights
KLMPriceFrom $590Free CancellationRating
7.7
1,402 reviews
Search KLM flights
British AirwaysPriceFrom $602Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
LufthansaPriceFrom $614Free CancellationRating
6.8
7,489 reviews
Search Lufthansa flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,298 reviews
Search Air Canada flights
IberiaPriceFrom $631Free CancellationRating
7.0
2,990 reviews
Search Iberia flights
American AirlinesPriceFrom $648Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights

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?

Yes. momondo allows you to filter the results for St. Louis to Barcelona flights to just show those with flexible booking policies.

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?

If you are not ready to book a flight from St. Louis to Barcelona now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Barcelona and let you know when they change.

An easier way to manage your Barcelona 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 11/13
Thu 11/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

Fly into one of these airports located in Barcelona

Airports listed have a maximum distance of 46.7 mi from Barcelona
Barcelona-El Prat Airport
Girona Costa Brava Airport