S$ 601 Find Cheap Flights from Hong Kong to San Francisco – Compare and Save

Among airlines operating Hong Kong to San Francisco flights:

• United Airlines: offers extra legroom; offers free seat selection
• Cathay Pacific: offers free seat selection
• American Airlines: offers free seat selection
• Asiana Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Hong Kong and San Francisco. The airlines offering direct flights on this route include:

• Cathay Pacific
• United Airlines

Flights from Hong Kong to San Francisco usually depart from Hong Kong Intl (HKG) and arrive at San Francisco (SFO).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy class
• Cathay Pacific: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Only Economy class is available on flights from Hong Kong to San Francisco.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average S$ 971 return via Taipei City Taiwan Taoyuan Intl (TPE), compared with S$ 1,100 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge S$ 119–S$ 119 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 777-300ER family is used most often on this route, operated mainly by United Airlines and Cathay Pacific. Other aircraft seen on the route include Airbus A350-900 variants.

One-stop flights from Hong Kong to San Francisco most commonly connect through:

• Taipei City Taiwan Taoyuan Intl (TPE) – 81% of one-stop connections
• Manila Ninoy Aquino Intl (MNL) – 10% of one-stop connections
• Incheon Intl (ICN) – 4% of one-stop connections
• Vancouver Intl (YVR) – 4% of one-stop connections

Taipei City Taiwan Taoyuan Intl (TPE) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 21% on the Hong Kong to San Francisco route. Thursday is the cheapest departure day at S$ 919 return on average, while Friday is the most expensive at S$ 1,161, a difference of S$ 241. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Hong Kong to San Francisco route, 15% of flights were delayed in the past 3 months, with delays averaging 2 hours 0 minutes.

Night is the busiest departure period on Hong Kong to San Francisco flights, with 50% leaving in that window. Morning departures account for 25%, Afternoon flights for 25%, and Evening flights for 0%.

Some of the most popular sights in San Francisco are Fisherman's Wharf, InterContinental Mark Hopkins San Francisco, and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

These are the earliest and latest flight times available from Hong Kong to San Francisco:

• Earliest: departs at 00:55 and lands at 13:20
• Latest: departs at 22:30 and lands at 10:55.

The flight takes about 12h 25m.

Last-minute fares on this route (booked within 2 weeks of departure) run 4% above the route average of S$ 979. Book 13 weeks before departure for the lowest fares.

A direct flight from Hong Kong to San Francisco takes 12h 25m, covering 17,896 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

One-way fares from Hong Kong to San Francisco are currently lower than usual. Average one-way flight prices are about S$ 629, which is 10% below the typical average for this route.

Night flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time of 17h 12m, compared to 17h 32m via Shanghai Pu Dong (PVG) and 17h 59m via Tokyo Narita (NRT).

San Francisco is 15 hours behind Hong Kong (Pacific Time vs Hong Kong Time). Plan for the time shift when scheduling connections or first-day activities.

San Francisco Airport (SFO) hosts 5 major car hire companies, with daily rates starting from around S$ 19 for economy cars. Top options include:
• Thrifty
• Europcar
• Dollar
• Hertz
• Fox

Return flights from Hong Kong to San Francisco range from S$ 862 to S$ 1,272, with an average of S$ 979 over the past 12 months. Anything below S$ 862 counts as a good deal.