$468 Find Cheap Flights from Hong Kong to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Hong Kong to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Hong Kong to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Hong Kong to San Francisco

Sun, Sep 27 - Sun, Dec 6
Air Canada Logo
9:45 am - 12:07 pm
HKG
-
SFO
41h 22m
2 stops
Air Canada Logo
10:45 pm - 5:10 am
SFO
-
HKG
38h 25m
2 stops
$845Air Canada
Mon, Aug 31 - Mon, Sep 7
Cathay Pacific Logo
1:10 am - 11:15 pm
HKG
-
SFO
13h 05mnonstop
Cathay Pacific Logo
1:20 am - 6:15 am
SFO
-
HKG
13h 55mnonstop
$846Cathay Pacific
Thu, Nov 5 - Mon, Nov 9
Air Canada Logo
12:35 pm - 8:32 pm
HKG
-
SFO
23h 57m
2 stops
Air Canada Logo
5:35 pm - 5:10 am
SFO
-
HKG
19h 35m
1 stop
$847Air Canada
Sun, Sep 13 - Fri, Sep 18
Air Canada Logo
12:45 am - 12:11 pm
HKG
-
SFO
50h 26m
2 stops
Air Canada Logo
12:15 pm - 5:15 am
SFO
-
HKG
26h 00m
1 stop
$849Air Canada
Tue, Aug 25 - Mon, Sep 14
United Airlines Logo
10:30 pm - 8:35 pm
HKG
-
SFO
13h 05mnonstop
United Airlines Logo
10:19 am - 5:40 am
SFO
-
HKG
28h 21m
1 stop
$850United Airlines
Sun, Aug 30 - Sat, Sep 5
Cathay Pacific Logo
1:10 am - 11:15 pm
HKG
-
SFO
13h 05mnonstop
Cathay Pacific Logo
1:20 am - 6:15 am
SFO
-
HKG
13h 55mnonstop
$851Cathay Pacific
Fri, Sep 4 - Wed, Oct 28
United Airlines Logo
11:45 am - 9:50 am
HKG
-
SFO
13h 05mnonstop
United Airlines Logo
12:45 pm - 7:20 pm
SFO
-
HKG
15h 35mnonstop
$852United Airlines
Thu, Aug 27 - Sat, Sep 12
Air Canada Logo
9:30 am - 7:49 pm
HKG
-
SFO
25h 19m
2 stops
Air Canada Logo
8:50 pm - 5:15 am
SFO
-
HKG
41h 25m
2 stops
$853Air Canada
Thu, Sep 3 - Fri, Oct 23
Delta Logo
12:20 pm - 9:59 pm
HKG
-
SFO
24h 39m
2 stops
Delta Logo
2:40 pm - 5:05 am
SFO
-
HKG
23h 25m
1 stop
$854Delta
Sat, Sep 5 - Mon, Oct 26
Delta Logo
12:20 pm - 11:07 pm
HKG
-
SFO
25h 47m
2 stops
Delta Logo
7:05 am - 6:40 am
SFO
-
HKG
32h 35m
1 stop
$855Delta
Booking Insights

KAYAK's insights & trends for flights to San Francisco

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

What is the cheapest day to fly to San Francisco?

The average price of all round-trip flights to San Francisco clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to San Francisco is Thursday where round-trip tickets can be as cheap as $826. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,191 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to San Francisco is April, where tickets cost $434 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Hong Kong is $794 and $700 respectively. For one-way flights, the best month to travel is June with an average price of $340.

What is the cheapest time of day to fly to San Francisco?

The average price for all round-trip flights to San Francisco depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to San Francisco is generally at night, when round-trip flights cost $1,005 on average. The most expensive time of day to fly to San Francisco is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,110.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Hong Kong $901 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$468
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Hong Kong to San Francisco

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

Insights shared by verified travelers who flew the route from Hong Kong to San Francisco 
NoelFlew with Cathay Pacific
HKG
-
SFO
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
HKG
-
SFO
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
HKG
-
SFO
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
HKG
-
SFO
Feb 2025
Fly United. Give yourself a lot of time to get to the gate
Verified travelerFlew with United Airlines
HKG
-
SFO
Sep 2024
Double check your boarding information in airport in time, like boarding gate, or boarding time, etc. because they might be updated.

FAQs - booking San Francisco flights

  • How far is San Francisco Airport from central San Francisco?

    You’ll need to travel 11 miles to reach the San Francisco city center from San Francisco Airport.

  • What is the name of San Francisco’s airport?

    There is only 1 airport in San Francisco, called San Francisco Airport (SFO). It can also be referred to as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $889. The cheapest price found on KAYAK in the last 2 weeks cost $470 and departed from Hong Kong Intl Airport.

  • How does KAYAK find such low prices on flights 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 to San Francisco.

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

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to San Francisco

  • Looking for cheap airfare to San Francisco? 25% of our users found round-trip tickets to San Francisco for the following prices or less: From Hong Kong $2,368
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco