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$148+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$295
(American Airlines)

One-way from

$148
(United Airlines)

Popular in

February

Cheapest in

September

Average price

$448
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 ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/251:35 pmSJU - SAN
2 stops12h 24mAmerican Airlines
Mon 11/310:23 pmSAN - SJU
1 stop14h 42mAmerican Airlines
Deal found 9/10$295
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:10 amSJU - SAN
1 stop14h 36mAmerican Airlines
Mon 10/2710:31 pmSAN - SJU
1 stop14h 24mAmerican Airlines
Deal found 9/9$302
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:05 amSJU - SAN
1 stop12h 00mUnited Airlines
Mon 11/178:40 pmSAN - SJU
2 stops12h 09mUnited Airlines
Deal found 9/9$320
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:16 pmSJU - SAN
2 stops20h 41mFrontier
Mon 10/277:43 pmSAN - SJU
2 stops19h 11mFrontier
Deal found 9/9$321
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/11:05 amSJU - SAN
1 stop11h 28mUnited Airlines
Tue 10/78:39 pmSAN - SJU
2 stops12h 55mUnited Airlines
Deal found 9/10$328
This United Airlines deal was found by Cheapflights users on 9/11. 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
Sun 10/128:39 pmSAN - SJU
2 stops12h 55mUnited Airlines
Deal found 9/11$331
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/85:30 amSJU - SAN
2 stops13h 00mAmerican Airlines
Sun 10/126:20 amSAN - SJU
1 stop14h 39mAmerican Airlines
Deal found 9/10$335
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:55 amSJU - SAN
1 stop14h 00mSouthwest
Sat 11/159:45 pmSAN - SJU
1 stop11h 35mSouthwest
Deal found 9/11$341
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/145:30 amSJU - SAN
1 stop16h 07mAmerican Airlines
Wed 10/156:20 amSAN - SJU
1 stop14h 39mAmerican Airlines
Deal found 9/10$343
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:55 pmSJU - SAN
2 stops11h 46mUnited Airlines
Sat 10/48:08 pmSAN - SJU
2 stops13h 26mUnited Airlines
Deal found 9/8$345
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:42 amSJU - SAN
2 stops23h 47mSpirit Airlines
Tue 9/301:35 pmSAN - SJU
3 stops21h 36mSpirit Airlines
Deal found 9/8$346
This Frontier deal was found by Cheapflights users on 9/10. 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.
Thu 10/236:22 amSJU - SAN
2 stops15h 06mFrontier
Sun 10/267:23 pmSAN - SJU
2 stops15h 43mFrontier
Deal found 9/10$348

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 September 11, 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 10/30

2:46 pm-9:53 pm

1 stop10h 07m

San Diego

Mon 11/3

8:40 pm-12:49 pm

2 stops12h 09m

$295

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 10/2

5:50 am-5:35 pm

1 stop14h 45m

San Diego

Tue 10/7

6:35 am-10:45 pm

1 stop13h 10m

$295

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 10/24

3:34 pm-8:37 am

1 stop20h 03m

San Diego

Wed 10/29

6:20 am-11:59 pm

1 stop14h 39m

$295

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Wed 10/1

2:55 pm-9:45 pm

1 stop9h 50m

San Diego

Sat 10/4

6:48 am-11:57 pm

2 stops14h 09m

$295

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Wed 11/12

2:05 am-10:05 am

1 stop12h 00m

San Diego

Mon 11/17

8:40 pm-12:49 pm

2 stops12h 09m

$320

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

Sun 10/12

8:39 pm-12:34 pm

2 stops12h 55m

$331

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Fri 10/3

1:05 am-9:33 am

1 stop11h 28m

San Diego

Wed 10/8

9:20 pm-12:00 pm

1 stop11h 40m

$375

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 10/2

2:00 pm-11:41 pm

2 stops12h 41m

San Diego

Fri 10/10

9:20 pm-12:00 pm

1 stop11h 40m

$375

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Thu 10/2

2:55 pm-9:45 pm

1 stop9h 50m

$148

San JuanSan Diego

SJU - SAN

SJUSAN

San Juan Luis Munoz Marin Intl

Sat 11/15

7:00 am-2:36 pm

1 stop11h 36m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 15 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 August 29, 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 September 11, 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.

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines 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

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
JetBlue
7.2
Good
2,913 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

  • How long is the flight from San Juan Luis Munoz Marin Intl Airport to San Diego?

    There are many flights that can get you from San Juan Luis Munoz Marin Intl Airport to San Diego in 10h 07m. Fly via United Airlines, Southwest, or American Airlines to get the fastest option. The distance between San Juan Luis Munoz Marin Intl Airport and San Diego is about 3304 mi. This flight may include one or multiple stops.

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

    According to our current data, American Airlines ($310), Delta ($351), and United Airlines ($360) 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 38% less than the average price by searching for these airlines.

  • 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?

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

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$310Average$495FlexibilityNo cancel feeOn-time71%
DeltaCheapest$351Average$568FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$360Average$498FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$398Average$459FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$408Average$489FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$464Average$574FlexibilityNo cancel feeOn-time75%

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