United Airlines
UA878 Flight status
According to Trip.com real-time data, the UA878 flight operated by United Airlines on Oct 4, 2026, flying from Hong Kong (HKG) to San Francisco (SFO), departed at 22:50 (local time in Hong Kong, UTC+8) and is expected to arrive at 19:47 (local time in San Francisco, UTC-7) at San Francisco International Airport (SFO).
Sun, Oct 4
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En route
Your flight has departed Hong Kong and is expected to arrive in San Francisco at 19:47.
11128km
12h 40m
Check-in Counter
G1-G36
Boarding Gate
64
Arrival Gate
G2
Baggage
6
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UA878 Aircraft Details
According to Trip.com real-time data, the UA878 flight from Hong Kong to San Francisco on 10/5/2026 is operated using the aircraft model Boeing 777-300ER. This aircraft has been in service for 9y, 4m. The aircraft has 350 seats.
Boeing 777-300ER
Punctuality (Departure)
100
%
Punctuality (Arrival)
97
%
Early on average
22 minutes
Age
9y, 4m
Seats
350
Flight Distance
--
Economy
Business
Premium Economy
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
--
Legroom
43 cm
Seat width
--
Reclining Angle
3-4-3
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
198 cm
More legroom than on 75% of flights
56 cm
Seat width better than on 75% of flights
180°
Reclining Angle
Fully reclinable
1-2-1
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
97 cm
Legroom
47 cm
Seat width
140°
Reclining Angle
2-4-2
Seat layout example
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Flight History for UA878
Check more records from Trip.com about UA878 before and after today
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Sep 28 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:47 | 20:22 | Arrived |
| Tue, Sep 29 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:36 | 19:22 | Arrived |
| Wed, Sep 30 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:40 | 19:36 | Arrived |
| Thu, Oct 1 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:45 | 20:09 | Arrived |
| Fri, Oct 2 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:41 | 19:37 | Arrived |
| Sat, Oct 3 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:36 | 19:11 | Arrived |
| Sun, Oct 4 | Hong Kong (HKG) | San Francisco (SFO) | 77W | 22:50 | 19:47 | En route |
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UA878 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of UA878 is 100% (Late on average 14 minutes), and the on-time arrival rate is 97% (Early on average 22 minutes).
On-Time Departures
Punctuality
100
%
Late on average
14 minutes
Early
0
%
On time
100
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
97
%
Early on average
22 minutes
Early
83
%
On time
13
%
30 mins late
3
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Flight FAQs
-
What is the current status of flight ua878?
Flight ua878 has departed (status: En route). Departure 22:50, estimated arrival 19:47 (updated Oct 5, 2026). -
Is flight ua878 on time today?
Flight ua878 has already departed (status: En route). It took off at 22:50 and is estimated to arrive at 19:47. -
Has flight ua878 departed yet? What is the departure time?
Flight ua878 is scheduled to depart at 22:30. The latest actual or estimated departure time is 22:50, and the current status is En route (updated Oct 5, 2026). -
When is flight ua878 scheduled to arrive?
Flight ua878 is scheduled to arrive at 20:10. The latest estimated or actual arrival time is 19:47. Status is En route as of Oct 5, 2026. -
What is the gate information for flight ua878?
For flight ua878, the departure terminal is T1 and the boarding gate is 64. Gate assignments can change at short notice—confirm on airport screens before heading to security. -
What is the baggage carousel number for flight ua878?
After arrival, baggage for flight ua878 is expected at carousel 6 in terminal I. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival. -
What route does flight ua878 fly?
Flight ua878 is operated by United Airlines from Hong Kong (HKG) to San Francisco (SFO). Typical flight time is about 12 hours 40 minutes; operating days may include Monday. -
How can I check real-time status for flight ua878?
Track flight ua878 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications. -
If flight ua878 is delayed or canceled, what should I do?
If ua878 is delayed or canceled, first confirm the latest status here (En route, updated Oct 5, 2026). Contact United Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com. -
Has flight ua878 departed from Hong Kong?
Flight ua878 has departed from Hong Kong (HKG) at 22:50 (status: En route). -
What is the seat configuration for flight ua878?
Flight ua878 usually flies a Boeing 777-300ER with seat layout 3-4-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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