United Airlines UA7939 Flight Status
According to Trip.com real-time data, the UA7939 flight operated by United Airlines on Mar 22, 2026 is scheduled to fly from Tokyo (HND) to San Francisco (SFO). The flight is expected to depart at 10:55 PM (local time in Tokyo, UTC+9) and land at 4:20 PM (local time in San Francisco, UTC-7) .
Sat, Mar 21
Sun, Mar 22
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En route
Your flight has departed Tokyo and is expected to arrive in San Francisco at 4:24 PM.
9h 25m
Check-in Counter
D,E
Boarding Gate
110
Arrival Gate
--
Baggage
4
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Scheduled
Your flight will depart on time.
9h 25m
Check-in Counter
D,E
Boarding Gate
110
Arrival Gate
--
Baggage
--
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Information provided by VariFlightVariFlight. For real-time updates, please check airport displays or contact your airline. If this is not your flight, you can browse more options for flights from Tokyo to San Francisco to find your schedule.
UA7939 Aircraft Details
According to Trip.com real-time data, the UA7939 flight flying from Tokyo to San Francisco on 3/22/2026 is operated by the aircraft model Boeing 777-300. This aircraft has been in service for 10y, 1m.
Boeing 777-300
Punctuality (Departure)
77%
Punctuality (Arrival)
83%
Late on average
11 minutes
Age
10y, 1m
Seats
--
Flight Distance
--
Economy
Business
First
Premium Economy
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
86 cm
More legroom than on 71% of flights
43 cm
Seat width better than on 21% of flights
110°
Reclining Angle
3-4-3
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (free)
USB port and power outlet
Seat Information
157 cm
More legroom than on 33% of flights
53 cm
Seat width better than on 56% of flights
180°
Reclining Angle Fully reclinable
1-2-1
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (free)
USB port and power outlet
Seat Information
193 cm
More legroom than on 14% of flights
84 cm
Seat width better than on 57% 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
More legroom than on 45% of flights
49 cm
Seat width better than on 55% of flights
135°
Reclining Angle
2-4-2
Seat layout example
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Flight History for UA7939
Trip.com historical records show that the last UA7939 flight departed on Sat, Mar 21 from HND at approximately 11:19 PM. This flight is expected to arrrive in SFO at 4:24 PM.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Mar 16 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:17 PM | 4:31 PM | Arrived |
| Tue, Mar 17 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:24 PM | 4:36 PM | Arrived |
| Wed, Mar 18 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:22 PM | 4:35 PM | Arrived |
| Thu, Mar 19 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:12 PM | 4:18 PM | Arrived |
| Fri, Mar 20 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:13 PM | 4:16 PM | Arrived |
| Sat, Mar 21 | Tokyo (HND) | San Francisco (SFO) | B77W | 11:19 PM | 4:24 PM | En route |
| Sun, Mar 22 | Tokyo (HND) | San Francisco (SFO) | 773 | 10:55 PM | 4:20 PM | Scheduled |
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UA7939 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA7939 is 77% (Late on average 29 minutes), and the on-time arrival rate is 83% (Late on average 11 minutes).
On-Time Departures
Punctuality
77%
Late on average 29 minutes
Early
0%
On time
77%
30 mins late
17%
60 mins late
7%
90 mins late
0%
Canceled
0%
On-Time Arrivals
Punctuality
83%
Late on average 11 minutes
Early
33%
On time
50%
30 mins late
10%
60 mins late
7%
90 mins late
0%
Canceled
0%
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Arrival Info: San Francisco Weather & Current Time
Intermittent clouds
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11°C - 23°C
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-16 hour time difference
Time on arrival: Tokyo 08:20| San Francisco 16:20
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