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United Airlines United Airlines

UA1665 Flight Status

Based on Trip.com’s real-time data, the UA1665 flight operated by United Airlines on Nov 4, 2026 is scheduled to fly from San Francisco (SFO) to Boston (BOS). The flight is expected to depart at 23:20 (local time in San Francisco, UTC-7) and land at 07:20 (local time in Boston, UTC-4) .
Tue, Nov 3
Wed, Nov 4
SFO-BOS

Access more flight status info on the Trip.com app

Scheduled
Your flight will depart on time.
San Francisco(SFO)
23:20
Scheduled: 23:20, Nov 3
San Francisco International Airport T3
173106C5-5199-4134-A176-6296CB3DA377 5h 36m
Boston(BOS)
07:20
Scheduled: 07:56, Nov 4
Boston Logan International Airport B
Check-in Counter
--
Boarding Gate
F15
Arrival Gate
B27
Baggage
5
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SFO-BOS

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Scheduled
Your flight will depart on time.
San Francisco(SFO)
23:20
Scheduled: 23:20, Nov 4
San Francisco International Airport T3
173106C5-5199-4134-A176-6296CB3DA377 5h 36m
Boston(BOS)
07:20
Scheduled: 07:56, Nov 5
Boston Logan International Airport B
Check-in Counter
--
Boarding Gate
--
Arrival Gate
--
Baggage
5
Need a flight from San Francisco to Boston?
United Airlines From RUB 17,060
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Information provided by VariFlight For the latest updates, please refer to airport announcements or consult your airline. You can also explore more flights from San Francisco to Boston or track other flights with our flight status tracker.

UA1665 Aircraft Details

According to Trip.com real-time data, the UA1665 flight flying from San Francisco to Boston on 11/4/2026 is operated by the aircraft model Boeing 757-200. This aircraft has been in service for 31y, 10m. The aircraft is equipped with 169 seats.
flight status
Boeing 757-200
Punctuality (Departure)
73 %
Punctuality (Arrival)
97 %
Early on average
22 minutes
Age
31y, 10m
Seats
169
Distance
--

Flight History for UA1665

Trip.com historical records show that the last UA1665 flight departed on Tue, Nov 3 from SFO at approximately 23:20. This flight is expected to arrrive in BOS at 07:20.
Date Airport Aircraft Type Departure Arrival Status
Departure Arrival
Thu, Oct 29 San Francisco (SFO) Boston (BOS) 752 23:41 07:34 Arrived
Fri, Oct 30 San Francisco (SFO) Boston (BOS) 752 -- -- Cancelled
Sat, Oct 31 San Francisco (SFO) Boston (BOS) 752 23:25 06:12 Arrived
Sun, Nov 1 San Francisco (SFO) Boston (BOS) 752 23:52 07:51 Arrived
Mon, Nov 2 San Francisco (SFO) Boston (BOS) 752 23:35 07:41 Arrived
Tue, Nov 3 San Francisco (SFO) Boston (BOS) 752 23:20 07:20 Scheduled
Wed, Nov 4 San Francisco (SFO) Boston (BOS) 752 23:20 07:20 Scheduled

UA1665 On-Time Performance

Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA1665 is 73% (Late on average 25 minutes), and the on-time arrival rate is 97% (Early on average 22 minutes).

On-Time Departures
Punctuality
73 %
Late on average 25 minutes
Early
0 %
On time
73 %
30 mins late
17 %
60 mins late
10 %
90 mins late
0 %
Cancelled
1 %
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
1 %

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Frequently Asked Questions

  • What is the current status of flight ua1665?

    Flight ua1665 has not departed yet and is currently on schedule. Scheduled departure 23:20, arrival 07:56 (updated Nov 4, 2026).
  • Flight ua1665 has not departed yet and is currently on schedule. Scheduled departure is 23:20, with arrival at 07:56. Recheck gate and timing before you head to the airport.
  • Flight ua1665 is scheduled to depart at 23:20. The latest actual or estimated departure time is 23:20, and the current status is Scheduled (updated Nov 4, 2026).
  • Flight ua1665 is scheduled to arrive at 07:56. The latest estimated or actual arrival time is 07:20. Status is Scheduled as of Nov 4, 2026.
  • After arrival, baggage for flight ua1665 is expected at carousel 5 in terminal B. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.
  • Flight ua1665 is operated by United Airlines from San Francisco (SFO) to Boston (BOS). Typical flight time is about 5 hours36 minutes; operating days may include Wednesday.
  • Track flight ua1665 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 ua1665 is delayed or canceled, first confirm the latest status here (Scheduled, updated Nov 4, 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.
  • Flight ua1665 has not departed from San Francisco (SFO) yet and is currently on schedule for 23:20.
  • Flight ua1665 usually flies a Boeing 757-200 with seat layout 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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Destination Info: Boston Weather & Time

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Intermittent clouds
|
12°C - 21°C
Expected weather conditions upon arrival
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3 hour time difference
Time on arrival: San Francisco 04:20 | Boston 07:20

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