United Airlines
Every day
starting at $524
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.
In different months, ticket prices from Hong Kong to San Francisco vary: minimum — $326 (October 2026), maximum — $465 (December 2026). Typically, the flight costs $422–$892.
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.
Flight prices from Hong Kong to San Francisco are steadily rising: from October 2026 to September 2027, ticket costs increased by 33%. The sooner you book, the better the deal.
The most significant price increase was from October 2026 to March 2027 — up 41%. The best time to fly is October 2026–November 2026, when the average price is $375. In December 2026–March 2027, tickets cost around $462.
Given the rising prices, it's best not to delay your purchase. Flying in October 2026–November 2026 can save you up to 19% compared to the most expensive months.
Price variation across months on this route is 11.9%. Your choice of departure month significantly affects the total flight cost.
All airports
United Airlines
Every day
starting at $524
The only airline operating direct flights from Hong Kong to San Francisco is United Airlines. Flights operate every day.
Hong Kong — San Francisco
10/19/2026
Departure
Direct flight
CX870
starting at $703
Hong Kong — San Francisco
11/03/2026
Departure
Direct flight
UA878
starting at $815
Hong Kong — San Francisco
01/10/2027
Departure
Direct flight
CX872
starting at $1,454
Hong Kong — San Francisco
12/07/2026
Departure
Direct flight
UA878
starting at $837
Hong Kong — San Francisco
01/22/2027
Departure
Direct flight
CX870
starting at $709
starting at $703
starting at $815
starting at $376
starting at $424
The route Hong Kong — San Francisco is served by many carriers — 4 in total, including Cathay Pacific, United Airlines, Perimeter Aviation Ltd., and Philippine Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $376) 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 flight ticket from Hong Kong to San Francisco according to data for the last 48 hours costs $376
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: October, November, September.
The fastest flights from Hong Kong to San Francisco start from 15 hours 40 minutes in the air.
The following airlines operate direct flights on the route Hong Kong — San Francisco: Cathay Pacific, United Airlines
The cheapest one-way flight from Hong Kong to San Francisco departs on 01/22/2027, is operated by Perimeter Aviation Ltd. and costs $376
The cheapest roundtrip flight from Hong Kong to San Francisco departs on 03/09/2027, is operated by Philippine Airlines and costs $780
Fastest flight from Hong Kong to San Francisco takes 15h 40m
There are direct flights on this route 4 days a week: Su, Mo, Tu, and Fr
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
We couldn't find any special offers for flights from Hong Kong to San Francisco