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UAL1665

SFO → BOS · Boeing 737 MAX 9 · United Airlines

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Departure · San Francisco (SFO)

Terminal T3 · Gate E12
Scheduled 03 Oct 23:20 · Departed 03 Oct 23:16
Board status: Departed
Airborne since 03 Oct 23:30 (ADS-B)

Arrival · Boston (BOS)

Terminal B · Gate B23 · Baggage belt 6
Scheduled 08:16 · Estimated 07:37 · early
Board status: Now 7:37 AM
In the air, ~2h 9m to go (54% of the route flown)

Board data from bos, sfo, updated 0 min ago; times local to each airport.

Flight

Status
In progress
Departure
San Francisco International Airport (SFO) — San Francisco, United States
Scheduled departure
2026-10-04 06:20 UTC
Departed
2026-10-04 06:30 UTC
Arrival
General Edward Lawrence Logan International Airport (BOS) — Boston, United States (scheduled)
Scheduled arrival
2026-10-04 12:16 UTC
Estimated arrival
2026-10-04 11:37 UTC
Progress
54% · ~2h 9m remaining
Also flies as
UA1665
Codeshares
NZ9018, VA8306
Distance flown
2391 km
Straight-line distance
4341 km

Aircraft

Registration
N77471
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First) (typical for type, not this tail)
CO2 (EMEP est., total)
87.5 t (620 kg/pax Business, 473 kg/pax Economy)

Altitude & speed

Max altitude
35,025 ft
Max ground speed
502 kt
Tracked
2h 45m · 2,391 km
Note
still in progress - the track so far
Altitude (ft, max 35,025)
018,91437,8270m30m1h 0m1h 30m2h 0m2h 30m
Ground speed (kt, max 502)
02715420m30m1h 0m1h 30m2h 0m2h 30m
Altitude (ft, max 35,025)
018,91437,8270m1h 0m2h 0m
Ground speed (kt, max 502)
02715420m1h 0m2h 0m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-04 06:30 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N77471 Boeing 737 MAX 9 In progress ~4341 km est.
2026-10-03 06:33 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17443 Boeing 737 MAX 9 Completed (landing confirmed by airport data) 4483 km
2026-10-02 06:33 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17438 Boeing 737 MAX 9 Completed 4457 km
2026-10-01 06:31 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N77592 Boeing 737 MAX 9 Completed 4460 km
2026-09-30 06:36 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17441 Boeing 737 MAX 9 Completed 4483 km
2026-09-29 06:39 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37440 Boeing 737 MAX 9 Completed 4473 km
2026-09-28 06:53 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17428 Boeing 737 MAX 9 Completed 4511 km
2026-09-27 06:31 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37507 Boeing 737 MAX 9 Completed 4466 km
2026-09-26 06:49 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N47570 Boeing 737 MAX 9 Completed 4481 km
2026-09-25 06:22 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N68801 Boeing 737-900 Completed 4479 km
2026-09-24 06:33 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17420 Boeing 737 MAX 9 Completed 4514 km
2026-09-23 06:03 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N27515 Boeing 737 MAX 9 Completed 4503 km
2026-09-22 06:12 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N27463 Boeing 737 MAX 9 Completed 4541 km
2026-09-21 08:04 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N37281 Boeing 737-800 Completed 628 km
2026-09-21 00:21 UTC UAL1665 SFO → ONT
San Francisco → Ontario
 N37281 Boeing 737-800 Completed 704 km
2026-09-20 06:28 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17436 Boeing 737 MAX 9 Completed 4628 km
2026-09-19 06:26 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17402 Boeing 737 MAX 9 Completed 4704 km
2026-09-19 02:38 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N12225 Boeing 737-800 Completed 718 km
2026-09-18 06:33 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N77587 Boeing 737 MAX 9 Completed 4744 km
2026-09-18 03:48 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N37278 Boeing 737 MAX 8 Completed 675 km
2026-09-17 06:43 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17454 Boeing 737 MAX 9 Completed 4685 km
2026-09-16 06:10 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37556 Boeing 737 MAX 9 Completed 4626 km
2026-09-15 06:10 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17594 Boeing 737-900 Completed 4744 km
2026-09-14 06:35 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17437 Boeing 737 MAX 9 Completed 4758 km
2026-09-14 03:07 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N35260 Boeing 737-800 Completed 653 km
2026-09-13 06:42 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N87442 Boeing 737 MAX 9 Completed 4653 km
2026-09-12 06:17 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37447 Boeing 737 MAX 9 Completed 4807 km
2026-09-11 06:22 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37545 Boeing 737 MAX 9 Completed 4746 km
2026-09-10 06:36 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N47412 Boeing 737 MAX 9 Completed 4663 km
2026-09-09 07:24 UTC UAL1665 ? → BOS
? → Boston
 N47412 Boeing 737 MAX 9 Completed 3620 km
2026-09-08 06:24 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17410 Boeing 737 MAX 9 Completed 4730 km
2026-09-08 02:17 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N36280 Boeing 737-800 Completed 640 km
2026-09-07 06:13 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17428 Boeing 737 MAX 9 Completed 4638 km
2026-09-06 06:31 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N57416 Boeing 737 MAX 9 Completed 4669 km
2026-09-05 06:35 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N47505 Boeing 737 MAX 9 Completed 4632 km
2026-09-05 02:35 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N14214 Boeing 737-800 Completed 628 km
2026-09-04 06:51 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17597 Boeing 737 MAX 9 Completed 4714 km
2026-09-04 03:27 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N62894 Boeing 737-900 Completed 667 km
2026-09-03 06:09 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17468 Boeing 737 MAX 9 Completed 4597 km
2026-09-02 05:44 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17438 Boeing 737 MAX 9 Completed 4528 km
2026-09-01 04:42 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N13248 Boeing 737-800 Completed 764 km
2026-08-31 06:19 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N27474 Boeing 737 MAX 9 Completed 4795 km
2026-08-31 02:26 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N75428 Boeing 737-900 Completed 683 km
2026-08-30 06:23 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17429 Boeing 737 MAX 9 Completed 4500 km
2026-08-29 06:11 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17468 Boeing 737 MAX 9 Completed 4730 km
2026-08-29 02:52 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N33286 Boeing 737-800 Completed 641 km
2026-08-28 06:13 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N37555 Boeing 737 MAX 9 Completed 4616 km
2026-08-28 03:27 UTC UAL1665 ONT → SFO
Ontario → San Francisco
 N33203 Boeing 737-800 Completed 651 km
2026-08-27 06:16 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N17529 Boeing 737 MAX 9 Completed 4633 km
2026-08-26 06:11 UTC UAL1665 SFO → BOS
San Francisco → Boston
 N77572 Boeing 737 MAX 9 Completed 4569 km

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