United Airlines
UA939 Flight Status (London to San Francisco)
According to Trip.com real-time data, the UA939 flight operated by United Airlines on Oct 8, 2026 is scheduled to fly from London (LHR) to San Francisco (SFO). The flight is expected to depart at 16:15 (local time in London, UTC+1) and land at 19:15 (local time in San Francisco, UTC-7) .
Wed, Oct 7
Thu, Oct 8
Fri, Oct 9
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En route
Your flight has departed London and is expected to arrive in San Francisco at 19:04.
11h
Check-in Counter
D
Boarding Gate
B46
Arrival Gate
G6
Baggage
1
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Scheduled
Your flight will depart on time.
11h
Check-in Counter
D
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Scheduled
Your flight will depart on time.
11h
Check-in Counter
D
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Information provided by VariFlight
For real-time updates, please check airport displays or contact your airline.
You can also explore more flights from London to San Francisco or track other flights with our flight status tracker.
Flight.News
A Heat Advisory remains in effect for the San Francisco Bay Shoreline and surrounding areas until 10 PM PDT Thursday. Hot conditions will bring maximum temperatures from the mid-90s to near 105, with mild overnight temperatures limiting relief. The heat poses risks to anyone without effective cooling or adequate hydration, with likely impacts on health systems, heat-sensitive industries, and infrastructure.
Track the Previous Flight Status: Scheduled
UA930
|
San Francisco (SFO)
London (LON)
London (LON)
Scheduled: 14:10
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UA939 Aircraft Details and Cabin Information - London to San Francisco on United Airlines
According to Trip.com real-time data, the UA939 flight flying from London to San Francisco on 10/8/2026 is operated by the aircraft model Boeing 787-9. This aircraft has been in service for 4m. The aircraft is equipped with 257 seats.
Boeing 787-9
Punctuality (Departure)
57
%
Punctuality (Arrival)
90
%
Early on average
2 minutes
Age
4m
Seats
257
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
81 cm
More legroom than on 63% of flights
--
Seat width
100°
Reclining Angle
3-3-3
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 50% of flights
51 cm
Seat width
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 38% of flights
47 cm
Seat width better than on 88% of flights
120°
Reclining Angle
2-3-2
Seat layout example
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UA939 Recent Flight History and Status - United Airlines
Trip.com historical records show that the last UA939 flight departed on Wed, Oct 7 from LHR at approximately 16:44. This flight is expected to arrrive in SFO at 19:04.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 3 | London (LHR) | San Francisco (SFO) | 789 | 16:51 | 19:16 | Arrived |
| Sun, Oct 4 | London (LHR) | San Francisco (SFO) | 789 | 17:22 | 19:44 | Arrived |
| Mon, Oct 5 | London (LHR) | San Francisco (SFO) | 789 | 16:28 | 18:49 | Arrived |
| Tue, Oct 6 | London (LHR) | San Francisco (SFO) | 789 | 16:49 | 19:07 | Arrived |
| Wed, Oct 7 | London (LHR) | San Francisco (SFO) | 789 | 16:44 | 19:04 | En route |
| Thu, Oct 8 | London (LHR) | San Francisco (SFO) | 789 | 16:15 | 19:15 | Scheduled |
| Fri, Oct 9 | London (LHR) | San Francisco (SFO) | 789 | 16:15 | 19:15 | Scheduled |
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UA939 On-Time Performance, Departure, and Arrival Trends
Review UA939 on-time performance based on recent trips, including departure punctuality, arrival punctuality, average delays, and early arrival trends to better understand overall flight reliability. Based on the average performance of UA939 flight over the past 30 trips, the on-time departure rate of UA939 is 57% (Late on average 38 minutes), while the on-time arrival rate is 90% (Early on average 2 minutes).
On-Time Departures
Punctuality
57
%
Late on average
38 minutes
Early
0
%
On time
57
%
30 mins late
30
%
60 mins late
7
%
90 mins late
7
%
Canceled
0
%
On-Time Arrivals
Punctuality
90
%
Early on average
2 minutes
Early
67
%
On time
23
%
30 mins late
3
%
60 mins late
0
%
90 mins late
7
%
Canceled
0
%
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Frequently Asked Questions
-
What is the current status of flight ua939?
Flight ua939 has not departed yet and is currently on schedule. Scheduled departure 16:15, arrival 19:15 (updated Oct 8, 2026). -
Is flight ua939 on time today?
Flight ua939 has not departed yet and is currently on schedule. Scheduled departure is 16:15, with arrival at 19:15. Recheck gate and timing before you head to the airport. -
Has flight ua939 departed yet? What is the departure time?
Flight ua939 is scheduled to depart at 16:15. The latest actual or estimated departure time is 16:15, and the current status is Scheduled (updated Oct 8, 2026). -
When is flight ua939 scheduled to arrive?
Flight ua939 is scheduled to arrive at 19:15. The latest estimated or actual arrival time is 19:15. Status is Scheduled as of Oct 8, 2026. -
What route does flight ua939 fly?
Flight ua939 is operated by United Airlines from London (LHR) to San Francisco (SFO). Typical flight time is about 11 hours; operating days may include Thursday. -
How can I check real-time status for flight ua939?
Track flight ua939 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 ua939 is delayed or canceled, what should I do?
If ua939 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 8, 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 ua939 departed from London?
Flight ua939 has not departed from London (LHR) yet and is currently on schedule for 16:15. -
What is the seat configuration for flight ua939?
Flight ua939 usually flies a Boeing 787-9 with seat layout 3-3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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Arrival Info: San Francisco Weather & Current Time
Mostly clear
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14°C - 23°C
Weather forecast for your arrival day
-8 hour time difference
Time on arrival: London 03:15
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San Francisco 19:15
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