HK$3,484+ 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 30-10. Fares are subject to change and may not be available on all flights or dates of travel.
— SAN
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Flights to San Diego in 2025

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 16 September 2025.

Return from

HK$5,864

One-way from

HK$3,430

Popular in

August

Cheapest in

July
30-10-6-11
  • 30-10-6-11
  • 4 total stops
  • 63h 17m total
  • Hong Kong to San Diego
11-10
  • 11-10
  • 2 total stops
  • 29h 46m total
  • Hong Kong to San Diego
Highest demand for flights based on searches. 5% potential increase in price (HK$4,545 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (HK$3,443 potential savings vs. average return price).

Find flight deals to San Diego

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 16 September 2025.

Thu 30-1011:20HKG - SAN
2 stops36h 20mMultiple Airlines
Thu 6-1114:03SAN - HKG
2 stops26h 57mMultiple Airlines
Deal found 14-9HK$5,864
Fri 31-1011:20HKG - SAN
2 stops36h 20mMultiple Airlines
Fri 7-1121:59SAN - HKG
2 stops43h 01mMultiple Airlines
Deal found 15-9HK$5,888
Wed 29-1011:15HKG - SAN
2 stops36h 25mMultiple Airlines
Wed 5-1112:30SAN - HKG
2 stops38h 00mMultiple Airlines
Deal found 13-9HK$6,036
Mon 15-915:25HKG - SAN
2 stops22h 00mMultiple Airlines
Sun 28-920:45SAN - HKG
2 stops21h 05mMultiple Airlines
Deal found 13-9HK$6,868
Wed 29-1010:35HKG - SAN
1 stop17h 10mUnited Airlines
Wed 5-1120:40SAN - HKG
1 stop18h 20mUnited Airlines
Deal found 13-9HK$6,946
Mon 15-918:55HKG - SAN
1 stop15h 51mUnited Airlines
Sun 28-920:39SAN - HKG
1 stop29h 06mUnited Airlines
Deal found 13-9HK$6,953
Fri 31-1010:35HKG - SAN
1 stop22h 59mUnited Airlines
Fri 7-1106:15SAN - HKG
1 stop21h 05mUnited Airlines
Deal found 16-9HK$7,350

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 16 September 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 30-10

11:20-08:40

2 stops36h 20m

San Diego

Thu 6-11

14:03-09:00

2 stops26h 57m

HK$5,864

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Wed 29-10

11:15-08:40

2 stops36h 25m

San Diego

Wed 5-11

12:30-18:30

2 stops38h 00m

HK$6,036

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 30-10

00:30-08:40

2 stops47h 10m

San Diego

Fri 7-11

21:59-22:30

2 stops56h 31m

HK$6,782

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Wed 29-10

22:45-23:44

1 stop15h 59m

San Diego

Wed 5-11

12:43-06:45

2 stops26h 02m

HK$6,946

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 31-10

22:45-23:44

1 stop15h 59m

San Diego

Fri 7-11

07:58-19:20

1 stop19h 22m

HK$7,350

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 20-2

20:05-09:19

2 stops29h 14m

San Diego

Tue 24-2

19:30-09:15

2 stops21h 45m

HK$7,692

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 17-10

21:10-12:15

2 stops30h 05m

HK$3,508

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Fri 30-1

13:30-21:52

2 stops24h 22m

HK$3,702

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sun 28-12

13:30-21:05

2 stops23h 35m

HK$4,099

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Thu 29-1

00:25-19:44

2 stops35h 19m

HK$5,382

Flights are sorted by cheapest return flights first.

Deals found on 14-9

Showing 1-10 of 13 results
1
2

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

What are the cheapest airlines that fly to San Diego?

The cheapest airlines flying from Hong Kong to San Diego are Air Canada and United Airlines.

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 16 September 2025.
Get a feel of what it's like to fly with United Airlines and Air Canada to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 best airline to fly to San Diego?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to San Diego.

  • 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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