HKG - SFO

C$ 574 Find Cheap Flights from Hong Kong to San Francisco – Compare and Save

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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 round-trip flight deals from Hong Kong to San Francisco

Sun, 22 Nov - Sat, 5 Dec
Delta Logo
12:55 a.m. - 4:24 p.m.HKG  Hong Kong Intl-SFO San Francisco
31h 29m2 stops Incheon Intl Salt Lake City
Delta Logo
5:56 p.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
37h 14m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,048Delta
Tue, 6 Oct - Wed, 14 Oct
Delta Logo
12:45 a.m. - 8:18 p.m.HKG  Hong Kong Intl-SFO San Francisco
34h 33m2 stops Incheon Intl Seattle/Tacoma Intl
Delta Logo
6:20 a.m. - 10:55 a.m.SFO  San Francisco-HKG Hong Kong Intl
37h 35m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,048Delta
Tue, 24 Nov - Tue, 8 Dec
Delta Logo
12:35 p.m. - 11:59 p.m.HKG  Hong Kong Intl-SFO San Francisco
27h 24m2 stops Incheon Intl Salt Lake City
Delta Logo
6:00 a.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
25h 10m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,048Delta
Wed, 18 Nov - Thu, 3 Dec
Delta Logo
12:55 a.m. - 4:14 p.m.HKG  Hong Kong Intl-SFO San Francisco
31h 19m2 stops Incheon Intl Salt Lake City
Delta Logo
7:24 p.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
35h 46m2 stops Salt Lake City Incheon Intl
C$ 1,048Delta
Mon, 23 Nov - Sat, 5 Dec
Delta Logo
10:45 a.m. - 7:51 p.m.HKG  Hong Kong Intl-SFO San Francisco
25h 06m1 stop Los Angeles Los Angeles
Delta Logo
5:56 p.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
37h 14m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,050Delta
Mon, 19 Oct - Thu, 5 Nov
Delta Logo
9:25 a.m. - 3:54 p.m.HKG  Hong Kong Intl-SFO San Francisco
21h 29m1 stop Los Angeles Los Angeles
Delta Logo
6:20 a.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
24h 50m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,050Delta
Mon, 19 Oct - Wed, 4 Nov
Delta Logo
9:25 a.m. - 1:45 p.m.HKG  Hong Kong Intl-SFO San Francisco
19h 20m1 stop Los Angeles Los Angeles
Delta Logo
6:20 a.m. - 11:10 p.m.SFO  San Francisco-HKG Hong Kong Intl
24h 50m2 stops Seattle/Tacoma Intl Incheon Intl
C$ 1,050Delta
Wed, 11 Nov - Sat, 21 Nov
Delta Logo
10:45 a.m. - 10:49 a.m.HKG  Hong Kong Intl-SFO San Francisco
16h 04m1 stop Los Angeles Los Angeles
Delta Logo
2:47 p.m. - 7:40 a.m.SFO  San Francisco-HKG Hong Kong Intl
24h 53m1 stop Los Angeles Los Angeles
C$ 1,051Delta
Mon, 23 Nov - Sat, 5 Dec
United Airlines Logo
10:30 p.m. - 6:55 p.m.HKG  Hong Kong Intl-SFO San Francisco
12h 25mdirect
United Airlines Logo
10:50 p.m. - 7:15 p.m.SFO  San Francisco-HKG Hong Kong Intl
28h 25m1 stop Los Angeles Los Angeles
C$ 1,056United Airlines
Fri, 11 Dec - Tue, 19 Jan
United Airlines Logo
10:35 a.m. - 7:05 a.m.HKG  Hong Kong Intl-SFO San Francisco
12h 30mdirect
United Airlines Logo
10:48 a.m. - 7:00 a.m.SFO  San Francisco-HKG Hong Kong Intl
28h 12m2 stops Denver Intl Los Angeles Los Angeles
C$ 1,056United Airlines
Booking Insights

Price, demand, and travel trends for Hong Kong to San Francisco flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Hong Kong to San Francisco with more confidence.

How much is a round-trip flight from Hong Kong to San Francisco?

Round-trip flights from Hong Kong to San Francisco start at C$ 1,048. Prices are typical for this route right now, with typical round-trip fares ranging from C$ 936 to C$ 1,382. The lowest price found in the past 5 days was C$ 1,048 on Delta.

What's the cheapest day of the week to fly from Hong Kong to San Francisco?

Thursday is the cheapest day of the week to fly from Hong Kong to San Francisco and is 7% cheaper than the average day. Friday is the most expensive day with flight prices 18% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from Hong Kong to San Francisco at C$ 942 round-trip.
  • July (C$ 1,534) and August (C$ 1,469) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 62% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Hong Kong to San Francisco the cheapest?

Flights from Hong Kong to San Francisco are cheapest 13 weeks before departure. Booking in this window typically costs about 16% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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 specializing 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 favorite 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. She will always choose the window seat.

Key details for Hong Kong to San Francisco flights

Low season

December

Cheapest flight

C$ 574
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flights 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 round-trip 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-Sep 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-Sep 2024
Double check your boarding information in airport in time, like boarding gate, or boarding time, etc. because they might be updated.

Your Hong Kong to San Francisco flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airlines offer extra legroom and free seat selection on Hong Kong to San Francisco flights?

    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.

  • Which airlines are available on the route from Hong Kong to San Francisco?

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

    • Cathay Pacific
    • United Airlines

  • Which airports can I use when flying from Hong Kong to San Francisco?

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

  • Which airlines include bags at no extra cost on Hong Kong to San Francisco flights?

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

    • United Airlines: a carry-on bag and a checked bag in Economy Class
    • Cathay Pacific: a carry-on bag and a checked bag in Economy Class
    • American Airlines: a carry-on 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.

  • Which cabin classes can I book on flights from Hong Kong to San Francisco?

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

  • How much can I save by taking a layover when flying from Hong Kong to San Francisco?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 1,055 round-trip via Taipei City Taiwan Taoyuan Intl (TPE), compared to C$ 1,195 for direct.

  • What is the standard checked bag allowance on flights from Hong Kong to San Francisco?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 129–C$ 129 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Hong Kong to San Francisco?

    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 Boeing 777-300 variants.

  • Which airports do connecting flights from Hong Kong to San Francisco pass through?

    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.

  • Can I save money by using flexible dates for flights from Hong Kong to San Francisco?

    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 C$ 999 round-trip on average, while Friday is the most expensive at C$ 1,261, a difference of C$ 262. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed on the route from Hong Kong to San Francisco?

    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, 16% of flights were delayed in the past 3 months, with delays averaging 2 hours 3 minutes.

  • How are flight departures from Hong Kong to San Francisco spread across the day?

    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%.

  • Which popular places can I visit in San Francisco?

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

  • What are the earliest and latest flights from Hong Kong to San Francisco?

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

    • Earliest: departs at 12:55 am and lands at 1:23 pm
    • Latest: departs at 10:30 pm and lands at 10:58 am.

    The flight takes about 12h 28m.

  • How expensive are last-minute Hong Kong to San Francisco flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 4% above the route average of C$ 1,063. Book 13 weeks before departure for the lowest fares.

  • How long does a flight from Hong Kong to San Francisco take?

    A direct flight from Hong Kong to San Francisco takes 12h 28m, covering 17,896 km.

  • Do I need a passport to fly from Hong Kong to San Francisco?

    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.

  • How are flight prices from Hong Kong to San Francisco looking right now?

    One-way fares from Hong Kong to San Francisco are currently lower than usual. Average one-way flight prices are about C$ 637, which is 16% below the typical average for this route.

  • How do delay rates compare for morning and evening flights from Hong Kong to San Francisco?

    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.

  • How much time can I save by choosing a different layover airport when travelling from Hong Kong to San Francisco?

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

  • What is the time difference between Hong Kong and San Francisco?

    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.

  • What car rental options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around C$ 21 for economy cars. Top options include:
    · Thrifty
    · Europcar
    · Dollar
    · Hertz
    · Fox

  • How much should I expect to pay for a Hong Kong to San Francisco flight?

    Round-trip flights from Hong Kong to San Francisco range from C$ 936 to C$ 1,382, with an average of C$ 1,063 over the past 12 months. Anything below C$ 936 counts as a good deal.

Your guide to booking Hong Kong to San Francisco flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure instead of Friday. On this route, Thursday flights average C$ 999 – about C$ 262 less than Friday (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 13 weeks before you fly. On this route, that window historically saves about 16% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Hong Kong to San Francisco trip for January. Fares historically average C$ 942 round-trip in that month – typically C$ 592 less than the most expensive month, which is July (based on the last 12 months).
  • If arriving on time is high on your priority list, United Airlines is the strongest pick on this route. 85% of United Airlines flights from Hong Kong to San Francisco arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 84%. When flights on this route do arrive late, the average delay is 2 hours3 minutes, so choosing a carrier with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Taipei City Taiwan Taoyuan Intl Airport (TPE) can be cheaper than flying direct. The cheapest layover option averages C$ 1,055 round-trip on this route – about C$ 140 less than direct flights (based on the last 12 months).

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 nonstop 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 nonstop flights

More options for your flight from Hong Kong to San Francisco

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