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$107+ Cheap flights from Luis Munoz Marin Intl (SJU) 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SAN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to San Diego are usually found in September or January, booked 17 days in advance, depart on a Thursday or Tuesday and return on a Saturday

Cheap flight deals from Luis Munoz Marin Intl to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$240
(CheapOair)

One-way from

$107
(CheapOair)

Popular in

February

Cheapest in

September

Average price

$496
From San Juan Luis Munoz Marin Intl to San Diego
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One-way flight from San Juan Luis Munoz Marin Intl to San Diego
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Luis Munoz Marin Intl to San Diego

Cheapest flights from Luis Munoz Marin Intl to San Diego
Explore the most affordable flight options available from Luis Munoz Marin Intl to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:48 pmSJU - SAN
2 stops30h 54mSpirit Airlines
Wed 9/106:15 amSAN - SJU
2 stops15h 29mSpirit Airlines
Deal found 7/28$240
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:05 pmSJU - SAN
1 stop19h 21mAmerican Airlines
Tue 10/1410:45 pmSAN - SJU
1 stop14h 09mAmerican Airlines
Deal found 7/27$275
This United Airlines deal was found by Cheapflights users on 7/29. 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 10/71:05 amSJU - SAN
1 stop11h 28mUnited Airlines
Mon 10/138:39 pmSAN - SJU
2 stops14h 06mUnited Airlines
Deal found 7/29$365
This Frontier deal was found by Cheapflights users on 7/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/83:08 pmSJU - SAN
2 stops11h 51mFrontier
Sat 8/161:12 pmSAN - SJU
2 stops16h 52mFrontier
Deal found 7/27$381

Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl 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 July 29, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to San Diego that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

San Diego

Route

Depart

Return

Price

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 9/4

2:48 pm-6:42 pm

2 stops30h 54m

San Diego

Wed 9/10

6:15 am-12:44 am

2 stops15h 29m

$240

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 10/9

7:05 pm-11:26 am

1 stop19h 21m

San Diego

Tue 10/14

10:45 pm-3:54 pm

1 stop14h 09m

$275

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-9:33 am

1 stop11h 28m

San Diego

Mon 10/13

8:39 pm-1:45 pm

2 stops14h 06m

$365

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 8/8

3:08 pm-11:59 pm

2 stops11h 51m

San Diego

Sat 8/16

1:12 pm-9:04 am

2 stops16h 52m

$381

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 9/18

2:48 pm-6:42 pm

2 stops30h 54m

$107

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 9/19

12:58 pm-11:42 pm

2 stops13h 44m

$138

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Sun 10/12

7:05 pm-11:26 am

1 stop19h 21m

$163

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Wed 8/27

3:30 pm-10:30 pm

1 stop10h 00m

$176

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Mon 9/22

1:05 am-9:36 am

1 stop11h 31m

$183

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Sun 8/10

3:40 am-5:55 pm

2 stops17h 15m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 11 results
1
2

Best time to book a flight from Luis Munoz Marin Intl to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to San Diego

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to San Diego. Price data was last updated on July 25, 2025.

Booking 17 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to San Diego?

Currently, August is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to San Diego (average of $286). Flying from San Juan Luis Munoz Marin Intl Airport to San Diego in March is currently the most expensive (average of $366). 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 SJU to SAN?

Find hourly flight availability from Luis Munoz Marin Intl to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s typically best to fly out from San Juan Luis Munoz Marin Intl Airport to San Diego at noon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from San Juan Luis Munoz Marin Intl Airport to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Luis Munoz Marin Intl to San Diego. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to San Diego flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from San Juan Luis Munoz Marin Intl Airport to San Diego?

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 July 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from San Juan Luis Munoz Marin Intl Airport to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl?

    If you book a flight to San Diego from San Juan Luis Munoz Marin Intl, you will be flying to San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 0 flights from San Juan Luis Munoz Marin Intl to San Diego per day from 6 different airlines.

  • What are the cheapest airlines flying from San Juan Luis Munoz Marin Intl Airport to San Diego round-trip?

    According to our current data, Spirit Airlines ($240), American Airlines ($275), and United Airlines ($365) offers the cheapest pricing from San Juan Luis Munoz Marin Intl Airport to San Diego. You may be able to fly from San Juan Luis Munoz Marin Intl Airport to San Diego for 52% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Juan Luis Munoz Marin Intl Airport to San Diego one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $107. Delta flights start at $138 while deals on American Airlines start at $163 one-way.

  • Can I find deals for flights from Luis Munoz Marin Intl to San Diego that include hotel bookings?

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

  • How can I find direct flights from Luis Munoz Marin Intl to San Diego?

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

  • Can I find deals for business class flights from Luis Munoz Marin Intl to San Diego?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to San Diego?

    Currently, August is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to San Diego (average of $286). Flying from San Juan Luis Munoz Marin Intl Airport to San Diego in March is currently the most expensive (average of $366). 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?

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Top 6 airlines flying from Luis Munoz Marin Intl to San Diego

Discover the top 6 airlines that operate flights from Luis Munoz Marin Intl 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$303Average$422FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$310Average$499FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$339Average$498FlexibilityNo cancel feeOn-time69%
DeltaCheapest$351Average$568FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$408Average$489FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$464Average$574FlexibilityNo cancel feeOn-time75%

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