HK$3,501+ 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 3-5. Fares are subject to change and may not be available on all flights or dates of travel.
— SAN
21 Feb — 28 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to San Diego in 2026

Enter your travel dates to find the best prices.

Cheapest flights to San Diego
Explore the most affordable flight options available to San Diego. Find the lowest fares based on data from user searches, with prices last updated on 22 January 2026.

Wed 3-620:10
HKG
-
SAN
2 stops26h 29m
Multiple Airlines
Tue 9-619:59
SAN
-
HKG
2 stops22h 16m
Multiple Airlines
Deal found 20-1HK$6,050
Sat 7-319:40
HKG
-
SAN
2 stops27h 38m
Multiple Airlines
Sat 14-308:00
SAN
-
HKG
2 stops21h 05m
Multiple Airlines
Deal found 20-1HK$6,495
Sun 8-313:30
HKG
-
SAN
2 stops35h 34m
EVA Air
Thu 12-322:09
SAN
-
HKG
2 stops30h 56m
EVA Air
Deal found 20-1HK$6,651
Thu 22-120:25
HKG
-
SAN
1 stop31h 38m
Air Canada
Thu 5-209:55
SAN
-
HKG
2 stops40h 45m
Air Canada
Deal found 21-1HK$7,009
Thu 11-613:30
HKG
-
SAN
2 stops25h 23m
Multiple Airlines
Thu 18-606:30
SAN
-
HKG
2 stops22h 25m
Multiple Airlines
Deal found 20-1HK$7,321
Tue 31-310:15
HKG
-
SAN
2 stops43h 39m
China Airlines
Sat 4-415:45
SAN
-
HKG
2 stops26h 30m
China Airlines
Deal found 19-1HK$7,384
Thu 22-110:35
HKG
-
SAN
1 stop20h 17m
United Airlines
Thu 5-207:45
SAN
-
HKG
1 stop19h 35m
United Airlines
Deal found 21-1HK$7,485
Tue 31-322:30
HKG
-
SAN
1 stop16h 59m
United Airlines
Sat 4-419:40
SAN
-
HKG
1 stop18h 20m
United Airlines
Deal found 21-1HK$7,734
Sun 8-310:35
HKG
-
SAN
1 stop17h 09m
United Airlines
Thu 12-319:50
SAN
-
HKG
1 stop18h 55m
United Airlines
Deal found 20-1HK$7,805
Fri 27-315:30
HKG
-
SAN
2 stops20h 55m
Multiple Airlines
Sat 11-406:20
SAN
-
HKG
2 stops22h 35m
Multiple Airlines
Deal found 21-1HK$7,945

Find flight deals to San Diego

Find the latest flights to San Diego in 2026, 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 22 January 2026.

Return from

HK$6,495

One-way from

HK$3,501

Popular in

August

Cheapest in

July

Average price

HK$9,496
7-3-14-3
  • 7-3-14-3
  • 4 total stops
  • 48h 43m total
  • Hong Kong to San Diego
3-5
  • 3-5
  • 2 total stops
  • 27h 45m total
  • Hong Kong to San Diego
Highest demand for flights based on searches. 2% potential increase in price (HK$238 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (HK$406 potential savings vs. average return price).
Average for return flights in January 2026

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 22 January 2026.
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

Wed 3-6

20:10-07:39

2 stops26h 29m

San Diego

Tue 9-6

19:59-09:15

2 stops22h 16m

HK$6,050

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 11-6

09:45-16:05

1 stop21h 20m

San Diego

Thu 18-6

08:25-22:45

2 stops23h 20m

HK$7,337

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 31-3

10:15-14:54

2 stops43h 39m

San Diego

Sat 4-4

15:45-09:15

2 stops26h 30m

HK$7,384

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 31-3

12:40-18:38

2 stops20h 58m

San Diego

Sat 4-4

17:00-05:00

2 stops21h 00m

HK$7,734

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sun 8-3

10:35-11:44

1 stop17h 09m

San Diego

Thu 12-3

19:50-05:45

1 stop18h 55m

HK$7,805

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sun 3-5

20:10-08:55

2 stops27h 45m

HK$3,501

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 5-5

17:35-08:55

2 stops30h 20m

HK$3,509

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Wed 29-4

20:10-08:55

2 stops27h 45m

HK$3,509

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 30-1

19:40-08:35

2 stops28h 55m

HK$3,836

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 26-2

14:05-23:15

2 stops25h 10m

HK$3,836

Flights are sorted by cheapest return flights first.

Deals found on 22-1

Showing 1-10 of 14 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 26 hours 29 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$1,801, while return flights cost around HK$1,203.

  • How much is a return flight to San Diego?

    A return flight to San Diego will typically cost around HK$1,377, however they can be found for as little as HK$1,203.

  • 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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