HKG - SFO

£309 Find Cheap Flights from Hong Kong to San Francisco – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£536
Typical prices: £504-£807
United Airlines
Mon 7/12Thu 15/4
HKG - SFO • Direct
Cheapest direct flights
£675
Typical prices: £543-£728
United Airlines
Tue 24/11Tue 8/12
HKG - SFO • Direct
Advice from real travellers
For Cathay Pacific, book direct; third-party apps may not show itinerary details.
On United, recheck gate updates and bring snacks; cabins can feel cold.
Expert advice
Expert advice
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Expert advice
Expert advice
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Direct flights
You can fly direct with Cathay Pacific and United Airlines. Average duration is 12h 13m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 1% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Hong Kong to San Francisco (HKG-SFO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Hong Kong to San Francisco

Mon, 7 Dec - Thu, 15 Apr
United Airlines Logo
22:30 - 18:55HKG  Hong Kong Intl-SFO San Francisco
12h 25mdirect
United Airlines Logo
08:45 - 18:30SFO  San Francisco-HKG Hong Kong Intl
18h 45m1 stop Los Angeles
£536United Airlines
Tue, 16 Mar - Thu, 1 Apr
Philippine Airlines Logo
19:05 - 20:45HKG  Hong Kong Intl-SFO San Francisco
16h 40m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
00:30 - 17:00SFO  San Francisco-HKG Hong Kong Intl
25h 30m1 stop Manila Ninoy Aquino Intl
£537Philippine Airlines
Tue, 24 Nov - Tue, 8 Dec
United Airlines Logo
10:35 - 07:05HKG  Hong Kong Intl-SFO San Francisco
12h 30mdirect
United Airlines Logo
08:45 - 19:15SFO  San Francisco-HKG Hong Kong Intl
18h 30m1 stop Los Angeles
£539United Airlines
Wed, 18 Nov - Tue, 8 Dec
United Airlines Logo
10:35 - 07:05HKG  Hong Kong Intl-SFO San Francisco
12h 30mdirect
United Airlines Logo
06:15 - 07:00SFO  San Francisco-HKG Hong Kong Intl
32h 45m2 stops Denver Intl Los Angeles
£540United Airlines
Tue, 17 Nov - Tue, 8 Dec
Asiana Airlines Logo
00:15 - 14:30HKG  Hong Kong Intl-SFO San Francisco
30h 15m1 stop Incheon Intl
Asiana Airlines Logo
23:00 - 22:40SFO  San Francisco-HKG Hong Kong Intl
31h 40m1 stop Incheon Intl
£565Asiana Airlines
Fri, 20 Nov - Mon, 30 Nov
United Airlines Logo
22:30 - 18:55HKG  Hong Kong Intl-SFO San Francisco
12h 25mdirect
United Airlines Logo
16:25 - 07:00SFO  San Francisco-HKG Hong Kong Intl
22h 35m1 stop Los Angeles
£574United Airlines
Tue, 24 Nov - Fri, 29 Jan
United Airlines Logo
10:35 - 07:05HKG  Hong Kong Intl-SFO San Francisco
12h 30mdirect
United Airlines Logo
06:00 - 19:15SFO  San Francisco-HKG Hong Kong Intl
21h 15m1 stop Los Angeles
£577United Airlines
Fri, 20 Nov - Mon, 30 Nov
United Airlines Logo
11:25 - 12:59HKG  Hong Kong Intl-SFO San Francisco
41h 34m2 stops Los Angeles Seattle/Tacoma Intl
United Airlines Logo
23:15 - 06:45SFO  San Francisco-HKG Hong Kong Intl
15h 30mdirect
£578United Airlines
Fri, 20 Nov - Mon, 30 Nov
United Airlines Logo
11:25 - 12:59HKG  Hong Kong Intl-SFO San Francisco
41h 34m2 stops Los Angeles Seattle/Tacoma Intl
United Airlines Logo
23:15 - 06:45SFO  San Francisco-HKG Hong Kong Intl
15h 30mdirect
£579United Airlines
Mon, 22 Mar - Tue, 30 Mar
Philippine Airlines Logo
22:55 - 20:45HKG  Hong Kong Intl-SFO San Francisco
36h 50m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
00:30 - 21:25SFO  San Francisco-HKG Hong Kong Intl
29h 55m1 stop Manila Ninoy Aquino Intl
£608Philippine Airlines
Booking Insights

KAYAK’s insights & trends for Hong Kong to San Francisco flights

Get data-powered insights and trends into flights from Hong Kong to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Hong Kong to San Francisco?

Flight prices are typical for this route right now.

Flights to San Francisco from Hong Kong usually cost between £524 and £675 in December.
The lowest price found in the past 5 days was £536 on United Airlines (7 Dec–15 Apr).

What is the cheapest month to fly from Hong Kong to San Francisco?

The cheapest month for flights from Hong Kong to San Francisco is January, where tickets cost £538 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £834 and £798 respectively.

Can I save money by flying with a stopover from Hong Kong to San Francisco?

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £666 on average.

How far in advance should I book a flight from Hong Kong to San Francisco?

To get a below average price on the flight from Hong Kong to San Francisco, you should book around 2 weeks before departure, which saves you about 1% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Expert advice

Expert advice for your flight from Hong Kong to San Francisco

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on HKG

One of the web's original travel bloggers, Robert launched his first site, Leave Your Daily Hell, in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Good to know - Cheap tickets from Hong Kong to San Francisco

Low season

April

Cheapest flight

£309
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Hong Kong to San Francisco

When to book flights from Hong Kong to San Francisco

Are your dates flexible? Find out the best times to travel from Hong Kong to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights from Hong Kong to San Francisco: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Hong Kong to San Francisco 
NoelFlew with Cathay Pacific-Mar 2026
Baggage handilng make sure to report any issues, like lost or damage immidiately, even if you miss your connecting flight , they will reschedule you, but if you have a fixed schedule, report as soon as possible , happend to my recent flight march 24,2026
KaushalendraFlew with American Airlines-Apr 2026
Don’t book via third party apps for Cathay Pacific flights, they don’t recognize the itinerary and won’t be able to even view details like airport terminals or gate numbers
Verified travelerFlew with United Airlines-Feb 2026
Prepare to bring your own food & snacks on board to eat, food on plane sucks, very cold on plane
RamFlew with United Airlines-Feb 2025
Fly United. Give yourself a lot of time to get to the gate
Verified travelerFlew with United Airlines-Dec 2024
be careful of short connection time when reaching US.
Verified travelerFlew with Cathay Pacific-Sept 2024
Get there earlier if you are a transit passenger, there are stores and restaurants but we flew in almost midnight and most stores were closed. Be your own advocate and look around what other passengers are doing!
Verified travelerFlew with United Airlines-Sept 2024
Double check your boarding information in airport in time, like boarding gate, or boarding time, etc. because they might be updated.

FAQs for booking flights from Hong Kong to San Francisco

  • What is the cheapest flight from Hong Kong to San Francisco?

    In the last 5 days, the lowest price for a flight from Hong Kong to San Francisco was £309 for a one-way ticket and £536 for a return.

  • Which aircraft models fly most regularly from Hong Kong to San Francisco?

    The Boeing 777-300ER is the aircraft model that flies most regularly on the Hong Kong to San Francisco flight route.

  • On which days can I fly direct from Hong Kong to San Francisco?

    There are direct flights from Hong Kong to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from Hong Kong to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Hong Kong to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Hong Kong to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Hong Kong is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Hong Kong to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Francisco with an airline and back to Hong Kong with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Hong Kong to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Hong Kong up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Hong Kong to San Francisco?

 
Find which airlines fly direct from Hong Kong Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Hong Kong Intl to San Francisco

Monday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Tuesday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Wednesday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Thursday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Friday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Saturday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Sunday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

See more direct flights

Direct returns

San Francisco to Hong Kong Intl

Monday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Tuesday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Wednesday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Thursday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Friday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Saturday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

Sunday

Cathay Pacific,United Airlines

Cathay Pacific,United Airlines

See more direct flights

More options for your flight from Hong Kong to San Francisco

Complete your trip to San Francisco with a hotel stay or car hire