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United · Route guide

United Airlines: San Francisco (SFO) to Hong Kong (HKG) Flight Details

Everything you need to fly San Francisco to Hong Kong: when to go, who flies it, what it costs, and how to land well.

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1 airline on this route · Daily, Year-Round

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Airline

United

Aircraft

Boeing 787-9

Service

Daily, Year-Round

Region

Asia-Pacific

The route

United Airlines provides a critical link between the technology capital of San Francisco and the global financial hub of Hong Kong. This long-haul transpacific service is a cornerstone of United's international network, catering to business leaders, vacationers, and those visiting friends and family. This route offers a direct connection to the heart of the Asia-Pacific region, utilizing state-of-the-art aircraft designed for long-distance comfort.

Operating daily and year-round, the non-stop service between San Francisco (SFO) and Hong Kong (HKG) covers approximately 6,900 miles. Passengers can expect a flight duration of about 14 to 15 hours depending on wind patterns, arriving at one of the world's most efficient airport facilities.

This route matters because it bridges two major economic powerhouses. San Francisco serves as the primary gateway for West Coast travelers heading to Asia, while Hong Kong remains a vital transit point for mainland China and Southeast Asian destinations. The route's consistency makes it an essential bridge for global trade and tourism.
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Airports

Taking off, touching down.

Check-in, security, connections and getting into town at both ends of the flight.

Departure

San Francisco International Airport (SFO)

SFO
Check-in
United international flights typically depart from International Terminal G.
Security
Arrive at least 3 hours before departure to account for international document checks and security queues.
Connections
Easily accessible via BART from downtown San Francisco and the East Bay.
Arrival

Hong Kong International Airport (HKG)

HKG
On arrival
Pick up an Octopus card at the airport for seamless payment on all public transport.
Ground transport
The Airport Express train reaches Central District in approximately 24 minutes.
Planning ahead
Hong Kong International offers extensive 24-hour dining and transit hotel options for late arrivals.
Timing & fares

When it flies, what it costs.

Schedule & reliability

Schedule
Flights generally depart SFO in the late morning or early afternoon, arriving in HKG the following evening.
Duration
Westbound flights toward Hong Kong are usually longer than the return eastbound flights due to jet stream winds.
Seasonality
Consistent daily operations throughout the year without seasonal pauses.
Time zones
Hong Kong is 15 to 16 hours ahead of San Francisco, leading to significant jet lag potential.

Fares & booking

Booking window
Optimal prices are usually found 3 to 4 months before departure for peak seasons.
Cabin advice
For a flight of this length, Premium Plus offers a significant comfort upgrade over standard Economy.
Peak pricing
Prices increase sharply during the Lunar New Year and summer school holiday periods.
  • Book at least 60 days in advance to secure the most competitive fares
  • Consider mid-week travel (Tuesday or Wednesday) for potentially lower pricing
  • Use the United mobile app to monitor for upgrade offers to Premium Plus or Polaris

Peak season

December, late January/February (Lunar New Year), and the summer months of June and July.

Shoulder season

March through May and September through October.

Off-peak season

November and the period immediately following Lunar New Year in late February.

Tours and experiences at either end

Vetted day trips and activities in Hong Kong and San Francisco, through our travel partner.

Browse tours
When to fly

Best Time to Fly San Francisco to Hong Kong

  1. 01

    Autumn (September to November)

    Generally considered the best time for visiting Hong Kong due to clear skies and pleasant temperatures.

  2. 02

    Spring (March to May)

    Mild weather, though humidity begins to rise and fog is possible.

  3. 03

    Winter (December to February)

    Cool and dry, making it ideal for hiking and outdoor exploration.

Trip planning

Who this route suits best.

Business Travelers

Direct access between two global financial centers with daily frequency.

Tech Industry Professionals

Connects Silicon Valley directly to the Asian tech manufacturing and finance hub.

Leisure Explorers

A perfect starting point for exploring the culture and cuisine of Hong Kong and beyond.

Connections & alternatives

Singapore (SIN)

Hong Kong is a major regional hub with frequent short flights to Changi Airport.

Bangkok (BKK)

Many travelers use Hong Kong as a stopover before continuing to Thailand's capital.

Taipei (TPE)

A very short flight from Hong Kong makes it an easy secondary destination.

Field notes

Travel Tips for the San Francisco-Hong Kong Route

Visa & entry

  • US citizens currently enjoy visa-free entry for short-term tourism and business stays in Hong Kong
  • Ensure your passport has at least six months of validity remaining from the date of entry
  • Complete the arrival card provided by the flight crew before landing to save time at immigration

Airport transfers

  • The Airport Express is the most efficient way to reach the city's urban core
  • Public 'A' route buses provide a more affordable way to reach various districts across Hong Kong
  • Taxis are color-coded by region: Red for urban areas, Green for New Territories, and Blue for Lantau

Baggage & transit

  • Check your specific fare class for baggage allowances as international rules vary
  • Ensure all bags have durable tags with your current contact information
  • Keep a change of clothes and essential toiletries in your carry-on for the long journey

Checklist

  • Valid Passport with 6 months validity
  • Universal power adapter (Type G plug used in Hong Kong)
  • Noise-canceling headphones for the 15-hour flight
  • Local currency (HKD) or a credit card with no foreign transaction fees
Carriers

Airlines Flying San Francisco to Hong Kong

United

Daily service (7 flights per week)

The Boeing 787-9 is the standard aircraft for this long-haul mission.

FAQ

Common questions.

Straight answers about flying San Francisco to Hong Kong.

How long is the flight from San Francisco to Hong Kong?

The non-stop flight usually takes about 14 hours and 45 minutes, though it can vary based on weather.

What terminal does United use at SFO for flights to Hong Kong?

United typically uses the International Terminal, specifically boarding areas near G gates.

Does United provide meals on the SFO to HKG route?

Yes, passengers receive multiple complimentary meals, snacks, and beverage services throughout the flight.

Is Wi-Fi available on the United flight to Hong Kong?

Yes, United's Boeing 787-9 aircraft are equipped with satellite Wi-Fi available for purchase.

Can I use the Polaris Lounge at SFO before my flight to Hong Kong?

If you are traveling in United Polaris business class, you have access to the Polaris Lounge in Terminal G.

Keep exploring

Where to next.

Structured data verified

Airports

San Francisco (SFO) (SAN)Hong Kong (HKG)San Francisco International AirportHong Kong International Airport

Countries & layovers

United StatesThe Ultimate Hong Kong layover guideSan Francisco layover guide

More on United

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