San Francisco Airport (SFO): United international check-in

Text and commentary: ThaiLiveNow

For the United itinerary from San Francisco to Bangkok via Hong Kong, go to United international check-in in the International Terminal, Level 3. Choose Aisle 1 for Business and Premium check-in or Aisle 2 for Economy. The domestic Terminal 2 and Terminal 3 entries are different.

Airport maps and check-in directions

Official SFO map · United international check-in ↗SFO United international check-in and contacts ↗

Airport counters

United Airlines · International check-in location

International Terminal G · Level 3 · Aisles 1–2

For a United international departure from San Francisco, check in on the International Terminal’s Departures Level (Level 3). Business and Premium passengers use Aisle 1; Economy passengers use Aisle 2. Aisles are check-in rows, not boarding gate numbers. This is separate from United’s domestic Terminal 2 and Terminal 3 listings. Ask United for the counter opening time and your flight’s check-in deadline; security checkpoint hours are not check-in hours.

Airline information →

Checked on: 2026-10-19

United Airlines · Baggage service contact

+1 800-221-6903

SFO lists this number as United’s Baggage Service. It is a baggage support channel, not a verified direct phone for a check-in counter or a particular arrivals desk. If your checked bag is missing or damaged, contact the operating airline’s arrivals baggage team and keep the report number.

Airline information →

Checked on: 2026-10-19

United Airlines · General airline contact · remote support

+1 800-538-2929

The SFO United international entry labels this number General Telephone. It is an airline contact, not a dedicated check-in desk or departure gate phone. Use the baggage service number for baggage support.

Airline information →

Checked on: 2026-10-19

Route

SFO → BKKUA877 + UA820 BKK → SFOUA821 + UA878

Check today’s flight status

United Airlines · Check today’s flight status ↗

Route

SFO ↔ BKK →

Frequently asked questions

Which airline counter should I use?

Check the actual operating airline and distinguish check-in, ticketing and arrival baggage services. Confirm the counter on your travel date with the departure screens and the airline.

How do I find routes at this airport?

Open a listed route to check its operating dates and schedule validity. Airport-pair links show information for the relevant departure and arrival airports.

Does the timetable show today’s flight status?

Scheduled departure and arrival times are separate from flight status on your travel date. Check your flight number and travel date through the airline’s official flight-status link.

Flight delays & cancellations

Delay and cancellation rights for flights departing Thailand: CAAT complaints →Find the right airline counter at the airport →Filing a Travel Insurance Claim: What to Prepare →My flight is delayed · US–Thailand →My flight has been canceled · US–Thailand →My checked bag has not arrived · US–Thailand →My suitcase is damaged · US–Thailand →

View official sources · 9