United UA4639 Flight Status Tracker
UA4639 is a domestic flight operated by United. UA4639 is departing from Ontario (ONT), United States and arriving at San Francisco (SFO), United States. The flight distance is about 585.63 km or 363.89 miles and flight time is 1 hours 41 minutes. Get the latest status of UA4639 / UAL4639 here.
Update on March 1, 2026, 11:03 p.m.
Lastest Status
Arrived On time
| ONT | SFO |
Distance: 585.63 km / 363.89 miles or 316.21 nautical miles.
Departure Ontario International Airport
Actual Departure: 07:30
Scheduled Departure: 07:40
Departure Terminal : N/A Gate None
Arrival San Francisco International Airport
Actual Arrival: 09:36
Scheduled Arrival: 09:50
Arrival Terminal : 1 Gate None
Flight UA4639 detail information
| Type | Domestic Flight |
| Route | Departure Ontario (ONT), United States and arriving at San Francisco (SFO), United States |
| Airlines | United (UA) |
| Aircraft | EMBRAER EMB 175 (short wing) |
| Flight Duration | 1 hours 41 minutes |
| Flight Distance | 585.63 km /363.89 miles |
| Operating Days | Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday |
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UA4639 Airports
| Departures |
|---|
| Airport: Ontario International Airport, United States |
| ICAO Code: ONT |
| ONT Current time: 17:08 01-Mar-2026 |
| Arrivals |
| Airport: San Francisco International Airport, United States |
| ICAO Code: SFO |
| SFO Current time: 17:08 01-Mar-2026 |