United Airlines
Every day
starting at $658
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Hong Kong to San Francisco. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Hong Kong to San Francisco, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
United Airlines
Every day
starting at $658
The only airline operating direct flights from Hong Kong to San Francisco is United Airlines. Flights operate every day.
Hong Kong — San Francisco
09/02/2026
Departure
Direct flight
CX872
starting at $539
Hong Kong — San Francisco
09/07/2026
Departure
Direct flight
CX870
starting at $1,784
Hong Kong — San Francisco
09/08/2026
Departure
Direct flight
CX870
starting at $832
Hong Kong — San Francisco
09/11/2026
Departure
Direct flight
CX870
starting at $715
Hong Kong — San Francisco
09/12/2026
Departure
Direct flight
UA862
starting at $574
Hong Kong — San Francisco
09/14/2026
Departure
Direct flight
CX870
starting at $773
Hong Kong — San Francisco
09/15/2026
Departure
Direct flight
UA862
starting at $525
Hong Kong — San Francisco
09/30/2026
Departure
Direct flight
UA878
starting at $623
Hong Kong — San Francisco
11/02/2026
Departure
Direct flight
CX8930
starting at $707
Hong Kong — San Francisco
11/04/2026
Departure
Direct flight
CX870
starting at $675
starting at $539
starting at $525
starting at $348
starting at $414
starting at $467
The route Hong Kong — San Francisco is served by many carriers — 5 in total, including Cathay Pacific, United Airlines, Perimeter Aviation Ltd., Philippine Airlines, and China Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $348) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.
The cheapest one-way flight from Hong Kong to San Francisco departs on 09/30/2026, is operated by Perimeter Aviation Ltd. and costs $348
The cheapest roundtrip flight from Hong Kong to San Francisco departs on 09/15/2026, is operated by United Airlines and costs $724
Fastest flight from Hong Kong to San Francisco takes 14h 40m
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Fr, and Sa
The distance between Hong Kong and San Francisco is 11095km (6879 miles). The average flight duration is 12h 30m. There are 44 direct flights from Hong Kong to San Francisco. The time difference between Hong Kong and San Francisco is 16h. Flights from Hong Kong begin at 11:45 AM. The latest flight from Hong Kong departs at 1:10 AM
Hong Kong International Airport (HKG) is the city’s main international hub, handling long-haul and regional flights for full-service carriers and many low-cost airlines alike. It sits on reclaimed land near Lantau Island, roughly 30–40 km from Central Hong Kong; travel times to downtown are typically 25–35 minutes by Airport Express train, around 45–60 minutes by taxi depending on traffic, and about 60–90 minutes by public bus, with fares varying by mode. The airport is known for efficient connections, plentiful lounges, and extensive shopping, though it can be busy during peak periods and requires transfers across terminals for some services. HKG is usually viewed as convenient and well-served for international travel.
San Francisco International Airport (SFO) is the region’s primary international gateway and a major hub for full-service carriers, with numerous long-haul and transcontinental connections; it can be pricier than nearby secondary airports, though budget options are available. The airport sits about 13 miles (≈21 km) south of downtown San Francisco. Travelers typically reach the city by BART (Bay Area Rapid Transit) in roughly 30–40 minutes with fares generally in the low to mid single-digit dollars, by taxi or rideshare in 25–45 minutes depending on traffic with variable fares, or by airport shuttle and rental car. Pros: frequent long-haul flights, strong ground-transport links, and extensive amenities; cons: can be busy during peak hours and some terminals involve long walks between gates.
The cheapest flight ticket from Hong Kong to San Francisco according to data for the last 48 hours costs $348
Often the best time to buy tickets from Hong Kong to San Francisco is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Hong Kong to San Francisco can be found flying in these months: September, October, November.
The fastest flights from Hong Kong to San Francisco start from 14 hours 40 minutes in the air.
The following airlines operate direct flights on the route Hong Kong — San Francisco: Cathay Pacific, United Airlines
In different months, ticket prices from Hong Kong to San Francisco vary: minimum — $318 (September 2026), maximum — $418 (December 2026). Typically, the flight costs $362–$736.
Flight prices from Hong Kong to San Francisco barely change from month to month. You can comfortably choose any convenient dates — there won't be a significant overpayment.
There is a slight difference: it's a bit cheaper in September 2026–October 2026 (averaging $327) and slightly more in November 2026–December 2026 ($389). But overall, the difference is small.
On this route, you don't need to target specific months — prices are stable. The difference between the cheapest and most expensive period is only 16%. Book whenever it's convenient.
Monthly price variation is just 9.5%. Ticket costs on this route are among the most predictable.
We couldn't find any special offers for flights from Hong Kong to San Francisco
