HK$3,584+ 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 28-3. Fares are subject to change and may not be available on all flights or dates of travel.
— SAN
15 Nov — 22 Nov1
1 adult
1 adult, Economy

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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 October 2025.

Mon 17-1121:50HKG - SAN
2 stops39h 39mEVA Air
Wed 3-1207:15SAN - HKG
2 stops21h 35mEVA Air
Deal found 14-10HK$6,111
Tue 4-1115:30HKG - SAN
2 stops21h 59mMultiple Airlines
Sun 9-1106:55SAN - HKG
2 stops21h 55mMultiple Airlines
Deal found 14-10HK$6,142
Mon 1-1217:35HKG - SAN
2 stops22h 35mMultiple Airlines
Mon 8-1219:59SAN - HKG
2 stops21h 16mMultiple Airlines
Deal found 15-10HK$6,562
Mon 1-1220:25HKG - SAN
1 stop36h 59mAir Canada
Mon 8-1212:45SAN - HKG
1 stop37h 55mAir Canada
Deal found 15-10HK$6,593
Mon 17-1120:25HKG - SAN
2 stops34h 30mAir Canada
Wed 3-1212:45SAN - HKG
1 stop37h 55mAir Canada
Deal found 14-10HK$6,881
Tue 23-1211:25HKG - SAN
2 stops23h 18mUnited Airlines
Tue 30-1216:00SAN - HKG
1 stop22h 45mUnited Airlines
Deal found 14-10HK$7,028
Sun 16-1100:55HKG - SAN
2 stops37h 52mDelta
Wed 3-1206:45SAN - HKG
2 stops24h 25mDelta
Deal found 14-10HK$7,067
Mon 17-1110:35HKG - SAN
1 stop23h 59mUnited Airlines
Wed 3-1209:54SAN - HKG
1 stop28h 51mUnited Airlines
Deal found 14-10HK$7,091
Mon 3-1100:55HKG - SAN
2 stops29h 25mKorean Air
Sun 9-1119:59SAN - HKG
2 stops23h 21mKorean Air
Deal found 14-10HK$7,098
Sun 30-1120:25HKG - SAN
1 stop36h 59mAir Canada
Sun 7-1212:45SAN - HKG
1 stop37h 55mAir Canada
Deal found 15-10HK$7,254

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 October 2025.

Return from

HK$5,994

One-way from

HK$3,584

Popular in

August

Cheapest in

July

Average price

HK$11,405
EVA Air
  • EVA Air
  • 7-2-28-2
  • 4 total stops
  • 55h 51m total
  • Hong Kong to San Diego
28-3
  • 28-3
  • 2 total stops
  • 27h 59m total
  • Hong Kong to San Diego
Highest demand for flights based on searches. 5% potential increase in price (HK$650 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (HK$451 potential savings vs. average return price).
Average for return flights in October 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 16 October 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

Mon 17-11

21:50-21:29

2 stops39h 39m

San Diego

Wed 3-12

07:15-20:50

2 stops21h 35m

HK$6,111

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 4-11

15:30-21:29

2 stops21h 59m

San Diego

Sun 9-11

06:55-20:50

2 stops21h 55m

HK$6,142

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sat 7-2

20:25-12:03

1 stop31h 38m

San Diego

Sat 28-2

18:10-18:40

1 stop32h 30m

HK$6,344

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sat 7-2

10:45-17:24

2 stops22h 39m

San Diego

Sat 28-2

18:10-18:40

1 stop32h 30m

HK$6,367

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sat 21-3

15:30-21:54

2 stops21h 24m

San Diego

Fri 17-4

20:45-08:50

2 stops21h 05m

HK$6,539

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Mon 1-12

17:35-00:10

2 stops22h 35m

San Diego

Mon 8-12

19:59-09:15

2 stops21h 16m

HK$6,562

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sat 28-3

19:40-08:39

2 stops27h 59m

San Diego

Sat 18-4

18:10-16:05

1 stop30h 55m

HK$6,640

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Mon 17-11

20:25-14:55

2 stops34h 30m

San Diego

Wed 3-12

12:45-18:40

1 stop37h 55m

HK$6,881

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Tue 23-12

11:25-18:43

2 stops23h 18m

San Diego

Tue 30-12

16:00-06:45

1 stop22h 45m

HK$7,028

Hong KongSan Diego

HKG - SAN

HKGSAN

Hong Kong Intl

Sat 28-3

19:40-08:39

2 stops27h 59m

HK$3,584

Flights are sorted by cheapest return flights first.

Deals found on 15-10

Showing 1-10 of 16 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 airline flying from Hong Kong to San Diego is 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 October 2025.
Get a feel of what it's like to fly with United Airlines 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

Overall

7.4

Food

6.6

Entertainment

7.1

Comfort

7.3

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

Overall

7.4

Food

6.6

Entertainment

7.1

Comfort

7.3

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, United Airlines is rated the highest out of the airlines that fly to San Diego.

  • 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$1,796, while return flights cost around HK$1,199.

  • How much is a return flight to San Diego?

    A return flight to San Diego will typically cost around HK$177, however they can be found for as little as HK$154.

  • 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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