HK$3,307+ Cheap flights to San Diego

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 30-1. Fares are subject to change and may not be available on all flights or dates of travel.
— SAN
29 Jan — 5 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to San Diego in 2025

Enter your travel dates to find the best prices.

Best flights to San Diego
Discover carefully curated flight deals to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 December 2025.

Thu 5-220:05HKG - SAN
2 stops28h 30mMultiple Airlines
Sat 28-216:45SAN - HKG
2 stops24h 30mMultiple Airlines
Deal found 29-12HK$5,516
Sun 25-120:25HKG - SAN
1 stop31h 38mAir Canada
Sun 1-218:05SAN - HKG
2 stops36h 45mAir Canada
Deal found 28-12HK$5,563
Thu 12-222:30HKG - SAN
1 stop17h 59mUnited Airlines
Thu 19-206:15SAN - HKG
1 stop21h 00mUnited Airlines
Deal found 29-12HK$7,041
Fri 13-211:20HKG - SAN
2 stops36h 58mEVA Air
Fri 20-222:09SAN - HKG
2 stops42h 51mEVA Air
Deal found 30-12HK$7,056
Sun 25-120:05HKG - SAN
2 stops19h 04mMultiple Airlines
Sun 1-217:10SAN - HKG
2 stops24h 05mMultiple Airlines
Deal found 28-12HK$6,317
Thu 5-220:25HKG - SAN
1 stop31h 38mAir Canada
Sat 28-218:05SAN - HKG
1 stop32h 35mAir Canada
Deal found 29-12HK$6,442
Tue 31-311:45HKG - SAN
2 stops23h 27mUnited Airlines
Sat 4-417:00SAN - HKG
2 stops21h 00mUnited Airlines
Deal found 28-12HK$7,337
Fri 27-320:05HKG - SAN
2 stops27h 09mMultiple Airlines
Sat 11-418:10SAN - HKG
1 stop20h 05mMultiple Airlines
Deal found 28-12HK$7,010

Find flight deals to San Diego

Find the latest flights to San Diego in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 30 December 2025.

Return from

HK$5,516

One-way from

HK$3,307

Popular in

August

Cheapest in

July

Average price

HK$10,884
5-2-28-2
  • 5-2-28-2
  • 4 total stops
  • 53h 00m total
  • Hong Kong to San Diego
30-1
  • 30-1
  • 2 total stops
  • 30h 50m total
  • Hong Kong to San Diego
Highest demand for flights based on searches. 2% potential increase in price (HK$240 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (HK$405 potential savings vs. average return price).
Average for return flights in December 2025

Cheapflights Fare Finder

 
Locate flights to San Diego that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 30 December 2025.
Use the filters below to find and compare flights to San Diego that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 5-2

20:05-08:35

2 stops28h 30m

San Diego

Sat 28-2

16:45-09:15

2 stops24h 30m

HK$5,516

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sun 25-1

20:25-12:03

1 stop31h 38m

San Diego

Sun 1-2

18:05-22:50

2 stops36h 45m

HK$5,563

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sun 25-1

20:05-23:09

2 stops19h 04m

San Diego

Sun 1-2

17:10-09:15

2 stops24h 05m

HK$6,317

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 5-2

20:25-12:03

1 stop31h 38m

San Diego

Sat 28-2

18:05-18:40

1 stop32h 35m

HK$6,442

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 27-3

20:05-08:14

2 stops27h 09m

San Diego

Sat 11-4

18:10-05:15

1 stop20h 05m

HK$7,010

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 12-2

22:30-00:29

1 stop17h 59m

San Diego

Thu 19-2

06:15-19:15

1 stop21h 00m

HK$7,041

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 13-2

11:20-08:18

2 stops36h 58m

San Diego

Fri 20-2

22:09-09:00

2 stops42h 51m

HK$7,056

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 31-3

11:45-20:12

2 stops23h 27m

San Diego

Sat 4-4

17:00-05:00

2 stops21h 00m

HK$7,337

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Mon 6-4

17:35-08:15

2 stops29h 40m

HK$3,307

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 30-1

20:05-08:35

2 stops28h 30m

HK$3,307

Flights are sorted by cheapest return flights first.

Deals found on 30-12

Showing 1-10 of 18 results
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Best time to book a flight to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego with our price prediction graph.
Estimated return 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 to San Diego

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 mm per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

How long is the flight to San Diego?

On average, a flight from Hong Kong to San Diego takes 27 hours 34 minutes. Flights to San Diego from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flying to San Diego

San Diego climate

The average daily temperature is 21 degrees Celsius. During the summer months and into October temperatures of 29C are not unusual. The city averages a mere 25cm (ten inches) of rain and even during the coldest months of December and January, temperatures still average a mild 20C.

Getting around San Diego

Like much of Southern California, the easiest way to get around San Diego is by car. You can find several rental car companies at the airport. Bus tickets are cheap and the trolley system is a great way to get around downtown or to nearby Tijuana. The Blue Line can take you through Old Town before crossing the border into Mexico. Tickets cost a few dollars and last for two hours. 

What is good to know if travelling to San Diego?

  • The Hotel del Coronado on Coronado Island is the largest wooden structure in the United States.
  • The zoo is home to a family of giant pandas, and when Hua Mei was born here, she was the first baby panda born in the Western Hemisphere since 1990 (she is now in China, mother of eight).
  • Deep discounts are available at the ARTS TIX booth downtown in Horton Plaza Park, where day-of-show tickets are available on a cash-only basis. Events include theatre, concert and dance throughout the city.
  • Each July, Mission Bay is home to a San Diego original, the Over-the-Line Tournament. This beach softball event dates from 1953 and is renowned for boisterous, anything-goes behaviour.
  • And for the holidays, kids of all ages gather in the lobby of Loews Coronado Bay Resort, where the Cat in the Hat gives regular readings of How the Grinch Stole Christmas. Theodor Geisel (Dr. Seuss) is one of San Diego’s most treasured native sons.
  • When is the best time to fly to San Diego?

    Peak season:  San Diego is a year-round destination and its high season takes in most of the year. Prices for San Diego flights and accommodation will be highest between May and August, November to January and all public holidays. If you are looking forward to the beach, beware the May Gray and June Gloom – fog by any other name.  Off season:  October, February and March are low-season months.  Shoulder season:  September and April are months of good weather and fewer crowds.

  • What airport do you fly into for flights to San Diego?

    San Diego (SAN), located 4.2 km from the city centre, is the airport you fly into when you book flights to San Diego.

  • Can I find cheaper flights to San Diego if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to San Diego on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the cheapest airport to fly to in San Diego?

    San Diego is currently the cheapest airport to fly to in San Diego. One-way flights to San Diego typically cost HK$1,798, while return flights cost around HK$1,200.

  • How much is a return flight to San Diego?

    A return flight to San Diego will typically cost around HK$1,374, however they can be found for as little as HK$1,200.

  • Does San Diego have rental cars?

    Yes. Those touching down at San Diego can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to San Diego?

    Yes. San Diego has hotels nearby for those requiring accommodations. Sheraton San Diego Resort is the closest property to San Diego (0.0 km away from San Diego).

See more FAQs

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