HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$429+ Cheap flights from Spain to San Diego (SAN)

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — SAN
giu 28 — lug 51
dom 6/28
dom 7/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Spain to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Spain to San Diego

Cheapest flights from Spain to San Diego
Explore the most affordable flight options available from Spain to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on maggio 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/157:00 pm
BCN
-
SAN
2 stops28h 42m
Multiple Airlines
sab 9/267:03 am
SAN
-
BCN
1 stop21h 32m
Multiple Airlines
Deal found 5/24$769
This SmartFares deal was found by Cheapflights users on 5/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 10/1312:50 pm
BCN
-
SAN
1 stop30h 02m
JetBlue
gio 10/221:35 pm
SAN
-
BCN
1 stop35h 10m
JetBlue
Deal found 5/28$794
This Trip.com deal was found by Cheapflights users on 5/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 9/511:05 am
MAD
-
SAN
2 stops21h 44m
Multiple Airlines
lun 9/219:59 pm
SAN
-
MAD
1 stop26h 56m
Multiple Airlines
Deal found 5/27$808
This lol.travel deal was found by Cheapflights users on 5/24. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/1512:50 pm
BCN
-
SAN
1 stop32h 32m
JetBlue
sab 9/263:00 pm
SAN
-
BCN
1 stop33h 45m
JetBlue
Deal found 5/24$840
This lol.travel deal was found by Cheapflights users on 5/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 6/122:05 pm
MAD
-
SAN
1 stop31h 31m
JetBlue
lun 6/1510:20 am
SAN
-
MAD
1 stop16h 10m
JetBlue
Deal found 5/27$842
This FlightHub deal was found by Cheapflights users on 5/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 12/145:00 pm
MAD
-
SAN
2 stops39h 45m
Scandinavian Airlines
ven 1/157:00 am
SAN
-
MAD
2 stops25h 45m
Scandinavian Airlines
Deal found 5/26$856
This FlightHub deal was found by Cheapflights users on 5/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 12/126:35 pm
MAD
-
SAN
2 stops37h 28m
Scandinavian Airlines
lun 1/1110:00 am
SAN
-
MAD
2 stops45h 10m
Scandinavian Airlines
Deal found 5/27$859
This eDestinos deal was found by Cheapflights users on 5/28. 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.
mar 10/1310:25 am
BCN
-
SAN
2 stops20h 33m
Multiple Airlines
gio 10/2210:52 am
SAN
-
BCN
2 stops26h 18m
Multiple Airlines
Deal found 5/28$865
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 11/510:30 am
BCN
-
SAN
1 stop17h 29m
Multiple Airlines
lun 11/167:00 am
SAN
-
BCN
2 stops22h 00m
Multiple Airlines
Deal found 5/24$868
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 9/610:25 pm
MAD
-
SAN
2 stops34h 24m
Multiple Airlines
mar 9/225:15 pm
SAN
-
MAD
1 stop15h 25m
Multiple Airlines
Deal found 5/25$872
This lol.travel deal was found by Cheapflights users on 5/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 9/52:05 pm
MAD
-
SAN
1 stop30h 51m
JetBlue
lun 9/218:20 pm
SAN
-
MAD
1 stop30h 10m
JetBlue
Deal found 5/27$880
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 9/56:45 am
BIO
-
SAN
1 stop14h 05m
Delta
lun 9/216:15 am
SAN
-
BIO
2 stops18h 35m
Delta
Deal found 5/25$882

Find flight deals from Spain to San Diego

Keep the following information in mind while searching for Spain to San Diego flight deals. Data was last updated maggio 29, 2026.

Round-trip from

$769
(Kiwi.com)

One-way from

$444
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$1,470
From Spain to San Diego
Search Deals
One-way flight from Spain to San Diego
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Spain to San Diego 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 maggio 29, 2026.
Use the filters below to find and compare flights from Spain to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

sab 9/5

6:45 am-11:50 am

1 stop14h 05m

San Diego

lun 9/21

6:15 am-9:50 am

2 stops18h 35m

$882

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

gio 6/11

6:45 am-11:50 am

1 stop14h 05m

San Diego

lun 6/15

6:15 am-9:50 am

2 stops18h 35m

$885

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

dom 9/13

6:35 am-10:48 pm

2 stops25h 13m

San Diego

dom 9/27

7:00 am-11:35 am

2 stops19h 35m

$889

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

sab 9/12

6:35 am-4:08 pm

2 stops18h 33m

San Diego

dom 9/27

7:00 am-11:35 am

2 stops19h 35m

$890

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

mer 11/18

1:05 pm-12:10 pm

1 stop32h 05m

San Diego

lun 11/30

9:45 am-3:20 pm

2 stops20h 35m

$893

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

sab 10/10

6:00 am-11:50 am

1 stop14h 50m

San Diego

sab 10/24

3:59 pm-6:40 pm

2 stops17h 41m

$894

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

lun 11/23

1:05 pm-12:10 pm

1 stop32h 05m

San Diego

gio 12/3

10:00 am-3:20 pm

2 stops20h 20m

$895

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

mer 11/18

10:55 am-12:10 pm

1 stop34h 15m

San Diego

lun 11/30

7:00 am-8:00 am

1 stop16h 00m

$896

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

sab 9/12

6:35 am-4:08 pm

2 stops18h 33m

San Diego

ven 9/25

1:15 pm-4:50 pm

2 stops18h 35m

$897

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

dom 9/13

6:35 am-6:00 pm

2 stops20h 25m

San Diego

sab 9/26

1:15 pm-4:15 pm

2 stops18h 00m

$897

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/28

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Spain to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Spain 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 Spain to San Diego

What is the cheapest month to book a flight from Spain to San Diego?

Currently, November is the cheapest month in which you can book a flight from Spain to San Diego (average of $234). Flying from Spain to San Diego in May is currently the most expensive (average of $743). 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.

How far ahead should I book a flight from Spain to San Diego?

To ensure you get the cheapest price possible for a flight from Spain to San Diego, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated maggio 29, 2026.
See what other customers who have flown with KLM from Spain to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,526 reviews

Overall

7.8

Crew

8.4

Entertainment

7.2

Food

7.3

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,526 reviews
KLM
7.8
Good
1,526 reviews

Overall

7.8

Crew

8.4

Entertainment

7.2

Food

7.3

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from Spain to San Diego. 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 into for flights to San Diego from Spain?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Spain. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How long is the flight from Spain to San Diego?

    For as low as $903, Delta can have you in San Diego from Spain in 17h 51m. The distance between Spain and San Diego is about 6025 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Spain to San Diego one-way?

    The cheapest airlines for a one-way flight from Spain to San Diego are American Airlines ($499), Iberia ($520), and British Airways ($527).

  • What are the most popular routes from Spain to San Diego?

    Most travelers choose Madrid Barajas - San Diego, Barcelona-El Prat - San Diego or Bilbao - San Diego when deciding on the best route from Spain to San Diego.

  • Can I find deals for flights from Spain to San Diego that include hotel bookings?

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

  • How can I find direct flights from Spain to San Diego?

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

  • Can I find deals for business class flights from Spain to San Diego?

    Yes. Cheapflights offers flight deals from Spain to San Diego 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 Spain to San Diego?

    Currently, November is the cheapest month in which you can book a flight from Spain to San Diego (average of $234). Flying from Spain to San Diego in May is currently the most expensive (average of $743). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
Poway
La Mesa
Julian
Santee
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Spain to San Diego

Discover the top airline that operate flights from Spain to San Diego. 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 maggio 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$933Average$934FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.