Cheap Flights from San Juan to San Diego from US$193

Frequently Asked Questions

• What are the cheapest flights from San Juan to San Diego (SJU-SAN)?

  Based on Trip.com data, United Airlines offers one-way fares as low as US$193 on Cheapest nonstop routes (e.g. SJU to SAN on Fri, Oct 16), while United Airlines offers Cheapest nonstop round-trips from US$480 departing on Wed, Sep 9 and returning on Tue, Sep 15.

• Which airlines offer flights from San Juan to San Diego?

  At the moment, several airlines serve connecting flights from San Juan to San Diego, including: United Airlines American Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from San Juan to San Diego?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Juan to San Diego is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from San Juan to San Diego?

  To find best deals on flights from San Juan to San Diego, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Oct 16, with one-way flights priced at just US$193.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Diego travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Juan (SJU) to San Diego (SAN) the cheapest?

  The cheapest months to fly from San Juan to San Diego is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Juan to San Diego on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from San Juan to San Diego on August 21, 2026 with United Airlines, with prices starting at US$191.

• Which airports can I fly to for San Diego from San Juan?

  You can land at any one of the following hubs in San Diego, with Luis Munoz Marin International Airport to San Diego International Airport (SJU-SAN) is by far the most common option on this route: McClellan-Palomar Airport (CLD) Marine Corps Air Station Miramar (NKX) San Diego International Airport (SAN).

• Is there any time difference between San Juan and San Diego?

  The time difference between San Diego and San Juan is 4h.

• How do I change or cancel my ticket from San Juan to San Diego?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from San Juan to San Diego?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Juan to San Diego is US$330. Fares vary by travel date, airline and availability.

• How do I book flights from San Juan to San Diego on Trip.com?

  Enter San Juan and San Diego, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.