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$301+ Cheap flights from St. Louis (STL) to Spain

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from St. Louis to Spain

Keep the following information in mind while searching for St. Louis to Spain flight deals. Data was last updated August 14, 2025.

Round-trip from

$411
(United Airlines)

One-way from

$301
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$766
From Lambert-St Louis to Spain
Search Deals
One-way flight from Lambert-St Louis to Spain
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($302 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Spain

Cheapest flights from St. Louis to Spain
Explore the most affordable flight options available from St. Louis to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1210:00 amSTL - BCN
1 stop20h 05mUnited Airlines
Wed 11/191:35 pmBCN - STL
2 stops31h 50mUnited Airlines
Deal found 8/13$411
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:25 amSTL - MAD
1 stop16h 40mUnited Airlines
Wed 11/261:35 pmMAD - STL
2 stops29h 53mUnited Airlines
Deal found 8/13$415
This Air Canada deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:00 amSTL - MAD
2 stops18h 00mMultiple Airlines
Wed 11/261:35 pmMAD - STL
2 stops32h 54mMultiple Airlines
Deal found 8/13$434
This Priceline deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
2 stops20h 05mAir Canada
Wed 11/191:35 pmBCN - STL
2 stops31h 50mAir Canada
Deal found 8/13$436
This KLM deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:30 pmSTL - MAD
1 stop12h 30mKLM
Wed 11/2611:00 amMAD - STL
1 stop17h 59mKLM
Deal found 8/13$438
This Gurufare deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:49 amSTL - BCN
1 stop14h 11mLufthansa
Wed 11/196:50 amBCN - STL
1 stop14h 05mLufthansa
Deal found 8/13$464
This United deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
1 stop23h 35mMultiple Airlines
Sun 11/161:35 pmBCN - STL
2 stops32h 54mMultiple Airlines
Deal found 8/14$468
This United deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
1 stop23h 35mMultiple Airlines
Sat 11/151:35 pmBCN - STL
2 stops32h 54mMultiple Airlines
Deal found 8/14$488
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:20 amSTL - BCN
2 stops17h 40mUnited Airlines
Sat 11/1511:00 amBCN - STL
2 stops15h 39mUnited Airlines
Deal found 8/14$513
This eDestinos deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/134:34 pmSTL - BCN
1 stop10h 56mIberia
Thu 10/2312:20 pmBCN - STL
1 stop15h 31mIberia
Deal found 8/14$514
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:30 pmSTL - MAD
1 stop21h 20mLufthansa
Wed 10/156:00 amMAD - STL
1 stop14h 30mLufthansa
Deal found 8/12$519
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/712:25 pmSTL - MAD
2 stops18h 45mLufthansa
Wed 10/156:00 amMAD - STL
1 stop14h 30mLufthansa
Deal found 8/12$520

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Spain 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, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from St. Louis to Spain that are best for you.

Fly from

St. Louis

Fly to

Spain

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

10:00 am-1:05 pm

1 stop20h 05m

Barcelona-El Prat

Wed 11/19

1:35 pm-3:46 pm

2 stops33h 11m

$411

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 11/18

8:25 am-8:05 am

1 stop16h 40m

Madrid Barajas

Wed 11/26

1:35 pm-12:28 pm

2 stops29h 53m

$415

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 11/18

7:00 am-8:00 am

2 stops18h 00m

Madrid Barajas

Wed 11/26

1:35 pm-3:29 pm

2 stops32h 54m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Wed 11/19

1:35 pm-2:25 pm

2 stops31h 50m

$436

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 11/18

1:30 pm-9:00 am

1 stop12h 30m

Madrid Barajas

Wed 11/26

11:00 am-9:59 pm

1 stop17h 59m

$438

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

11:49 am-9:00 am

1 stop14h 11m

Barcelona-El Prat

Wed 11/19

6:50 am-1:55 pm

1 stop14h 05m

$464

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

6:30 am-1:05 pm

1 stop23h 35m

Barcelona-El Prat

Sun 11/16

1:35 pm-3:29 pm

2 stops32h 54m

$468

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

10:00 am-1:05 pm

1 stop20h 05m

Barcelona-El Prat

Sun 11/16

6:50 am-1:55 pm

1 stop14h 05m

$483

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

11:49 am-9:00 am

1 stop14h 11m

Barcelona-El Prat

Wed 11/19

6:50 am-1:55 pm

1 stop14h 05m

$483

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

6:30 am-1:05 pm

1 stop23h 35m

Barcelona-El Prat

Sat 11/15

1:35 pm-3:29 pm

2 stops32h 54m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 55 results
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Best time to book a flight from St. Louis to Spain

Have a flexible travel schedule? Discover the best time to fly to Spain from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Spain

What is the cheapest month to book a flight from St. Louis to Spain?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Spain (average of $543). Flying from St. Louis to Spain in June is currently the most expensive (average of $1,053). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to ES?

Find hourly flight availability from St. Louis to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

When flying from St. Louis to Spain, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Spain

Get insights into the airlines that provide service to Spain. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Spain. Reviews last updated August 14, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Air Canada from St. Louis to Spain by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,949 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
2,878 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,266 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Spain. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Spain?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Spain. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the most popular routes from St. Louis to Spain?

    Most travelers choose Lambert-St Louis - Madrid Barajas, Lambert-St Louis - Sevilla or Lambert-St Louis - Barcelona-El Prat when deciding on the best route from St. Louis to Spain.

  • Can I find deals for flights from St. Louis to Spain that include hotel bookings?

    Yes. In addition to deals on St. Louis to Spain flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Spain?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Spain.

  • Can I find deals for business class flights from St. Louis to Spain?

    Yes. Cheapflights offers flight deals from St. Louis to Spain by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Spain?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Spain (average of $543). Flying from St. Louis to Spain in June is currently the most expensive (average of $1,053). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Spain

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from St. Louis to Spain

Discover the top 8 airlines that operate flights from St. Louis to Spain. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$546Average$873FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$573Average$1,042FlexibilityNo cancel feeOn-time69%
IberiaCheapest$581Average$974FlexibilityNo cancel feeOn-time77%
KLMCheapest$590Average$751FlexibilityNo cancel feeOn-time75%
DeltaCheapest$602Average$953FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$605Average$1,125FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$629Average$1,108FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$634Average$1,055FlexibilityNo cancel feeOn-time71%

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