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$345+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — SAN
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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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 March 10, 2026.

This United Airlines deal was found by Cheapflights users on 3/6. 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.
Fri 5/2912:45 pm
MAD
-
SAN
2 stops18h 40m
United Airlines
Sat 5/301:53 pm
SAN
-
MAD
2 stops31h 57m
United Airlines
Deal found 3/6$629
This SmartFares deal was found by Cheapflights users on 3/8. 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.
Wed 4/221:30 pm
MAD
-
SAN
1 stop28h 54m
JetBlue
Wed 4/298:30 pm
SAN
-
MAD
1 stop30h 00m
JetBlue
Deal found 3/8$647
This Expedia deal was found by Cheapflights users on 3/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:50 pm
BCN
-
SAN
1 stop29h 34m
JetBlue
Wed 4/298:30 pm
SAN
-
BCN
1 stop28h 15m
JetBlue
Deal found 3/7$687
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Thu 4/92:05 pm
BCN
-
SAN
1 stop27h 10m
Multiple Airlines
Sat 4/255:52 pm
SAN
-
BCN
1 stop37h 33m
Multiple Airlines
Deal found 3/9$688
This lol.travel deal was found by Cheapflights users on 3/9. 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.
Thu 4/231:30 pm
MAD
-
SAN
1 stop28h 54m
JetBlue
Thu 4/308:30 pm
SAN
-
MAD
1 stop30h 00m
JetBlue
Deal found 3/9$704
This lol.travel deal was found by Cheapflights users on 3/7. 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.
Fri 5/292:05 pm
MAD
-
SAN
1 stop31h 25m
JetBlue
Mon 6/811:03 am
SAN
-
MAD
1 stop15h 27m
JetBlue
Deal found 3/7$748
This Orbitz deal was found by Cheapflights users on 3/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:05 pm
MAD
-
SAN
1 stop28h 46m
JetBlue
Sun 6/148:40 pm
SAN
-
MAD
1 stop29h 50m
JetBlue
Deal found 3/8$749
This Trip.com deal was found by Cheapflights users on 3/9. 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.
Wed 11/187:40 am
MAD
-
SAN
2 stops21h 44m
Multiple Airlines
Tue 12/16:00 pm
SAN
-
MAD
1 stop30h 45m
Multiple Airlines
Deal found 3/9$759
This KLM deal was found by Cheapflights users on 3/7. 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 4/216:45 am
BIO
-
SAN
1 stop14h 05m
Multiple Airlines
Tue 4/283:15 pm
SAN
-
BIO
2 stops17h 15m
Multiple Airlines
Deal found 3/7$777
This lol.travel deal was found by Cheapflights users on 3/6. 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.
Thu 5/282:05 pm
MAD
-
SAN
1 stop31h 25m
JetBlue
Sun 5/318:45 pm
SAN
-
MAD
1 stop29h 45m
JetBlue
Deal found 3/6$779
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Thu 4/2310:40 pm
BCN
-
SAN
2 stops43h 15m
Multiple Airlines
Thu 4/309:19 am
SAN
-
BCN
1 stop22h 06m
Multiple Airlines
Deal found 3/9$783
This Delta deal was found by Cheapflights users on 3/9. 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.
Thu 4/236:35 am
VLC
-
SAN
2 stops25h 31m
Delta
Thu 4/307:30 am
SAN
-
VLC
2 stops19h 05m
Delta
Deal found 3/9$783

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 March 10, 2026.

Round-trip from

$629
(United Airlines)

One-way from

$331
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$689
From Spain to San Diego
Search Deals
One-way flight from Spain to San Diego
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 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

Tue 4/21

6:45 am-3:55 pm

2 stops18h 10m

San Diego

Tue 4/28

3:15 pm-5:30 pm

2 stops17h 15m

$783

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

Thu 4/23

6:35 am-11:06 pm

2 stops25h 31m

San Diego

Thu 4/30

7:30 am-11:35 am

2 stops19h 05m

$783

BarcelonaSan Diego

BCN - SAN

BCNSAN

Barcelona-El Prat

Mon 4/13

1:25 pm-11:50 am

1 stop31h 25m

San Diego

Mon 4/27

1:40 pm-5:10 pm

2 stops18h 30m

$787

BarcelonaSan Diego

BCN - SAN

BCNSAN

Barcelona-El Prat

Thu 4/9

6:20 am-11:50 am

1 stop14h 30m

San Diego

Sat 4/25

7:30 am-11:15 am

2 stops18h 45m

$787

BarcelonaSan Diego

BCN - SAN

BCNSAN

Barcelona-El Prat

Thu 4/23

6:20 am-11:50 am

1 stop14h 30m

San Diego

Mon 5/4

10:05 am-2:50 pm

2 stops19h 45m

$787

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 3/25

7:25 am-9:07 pm

2 stops21h 42m

San Diego

Sun 4/26

10:05 am-5:30 pm

2 stops22h 25m

$787

ValenciaSan Diego

VLC - SAN

VLCSAN

Valencia

Thu 4/23

6:35 am-6:19 pm

2 stops20h 44m

San Diego

Thu 4/30

1:40 pm-11:00 pm

1 stop24h 20m

$788

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

Tue 4/21

6:00 am-11:50 am

1 stop14h 50m

San Diego

Tue 4/28

3:15 pm-7:15 pm

2 stops19h 00m

$788

MadridSan Diego

MAD - SAN

MADSAN

Madrid Barajas

Mon 4/13

5:20 pm-11:50 am

1 stop27h 30m

San Diego

Tue 4/28

6:15 am-12:15 pm

1 stop21h 00m

$789

BarcelonaSan Diego

BCN - SAN

BCNSAN

Barcelona-El Prat

Mon 4/13

9:20 am-11:50 am

1 stop35h 30m

San Diego

Mon 4/27

6:15 am-12:50 pm

1 stop21h 35m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Spain to San Diego (average of $267). Flying from Spain to San Diego in August is currently the most expensive (average of $802). 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.

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 March 10, 2026.
See what other customers who have flown with Iberia 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.
Iberia
7.0
Good
3,133 reviews

Crew

7.7

Food

6.4

Entertainment

6.6

Comfort

6.8

Overall

7.0

Boarding

7.1

Reviews

1 / 20
2.0
Mediocre

Laba,Feb 2026

DEN - DFW

Were not helpful at all when I found out at the very last minute, just when my daughter was about to board at Dallas to Madrid, that the connecting flight ticket had been reissued to somebody else.
Iberia
7.0
Good
3,133 reviews
Iberia
7.0
Good
3,133 reviews

Crew

7.7

Food

6.4

Entertainment

6.6

Comfort

6.8

Overall

7.0

Boarding

7.1

Reviews

1 / 20
2.0
Mediocre

Laba,Feb 2026

DEN - DFW

Were not helpful at all when I found out at the very last minute, just when my daughter was about to board at Dallas to Madrid, that the connecting flight ticket had been reissued to somebody else.

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 $629, United Airlines can have you in San Diego from Spain in 18h 40m. The distance between Spain and San Diego is about 5839 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 Valencia - 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, February is the cheapest month in which you can book a flight from Spain to San Diego (average of $267). Flying from Spain to San Diego in August is currently the most expensive (average of $802). 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
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$690Average$854FlexibilityNo cancel feeOn-time77%

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