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UAL1734

BOS → IAD · Boeing 737 MAX 9 · United Airlines

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Departure · Boston (BOS)

Terminal B · Gate B27
Scheduled 05:45 · Departed 05:46
Board status: Departed
Airborne since 05:51 (ADS-B)

Arrival · Washington, DC (IAD)

Gate D16 · Baggage belt 1
Scheduled 07:20 · Estimated 07:15 · early
Board status: InAir
In the air, ~18m to go (71% of the route flown)

Board data from bos, mwaa, updated 7 min ago; times local to each airport.

Flight

Status
In progress
Departure
General Edward Lawrence Logan International Airport (BOS) — Boston, United States
Scheduled departure
2026-10-03 09:45 UTC
Departed
2026-10-03 09:51 UTC
Arrival
Washington Dulles International Airport (IAD) — Washington, DC, United States (scheduled)
Scheduled arrival
2026-10-03 11:20 UTC
Estimated arrival
2026-10-03 11:15 UTC
Progress
71% · ~18m remaining
Also flies as
UA1734
Codeshares
AV2023, CM1090, ET1357, MS9317
Distance flown
524 km
Straight-line distance
664 km

Aircraft

Registration
N37538
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
14.3 t (77 kg/pax Economy, 102 kg/pax Business)

Altitude & speed

Max altitude
26,000 ft
Max ground speed
442 kt
Tracked
44m · 524 km
Note
still in progress - the track so far
Altitude (ft, max 26,000)
014,04028,0800m30m
Ground speed (kt, max 442)
02394770m30m
Altitude (ft, max 26,000)
014,04028,0800m
Ground speed (kt, max 442)
02394770m

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
2026-10-03 09:51 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N37538 Boeing 737 MAX 9 In progress ~664 km est.
2026-10-02 09:48 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17411 Boeing 737 MAX 9 Completed 764 km
2026-10-01 12:43 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N77865 Boeing 737-300 Completed 3898 km
2026-10-01 09:52 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N37474 Boeing 737-900 Completed 769 km
2026-09-30 12:42 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N78866 Boeing 737-300 Completed 3725 km
2026-09-30 09:58 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N47293 Boeing 737 MAX 8 Completed 753 km
2026-09-29 12:45 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N74856 Boeing 737-300 Completed 3715 km
2026-09-28 12:46 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57855 Boeing 737-300 Completed 3711 km
2026-09-28 09:56 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N27526 Boeing 737 MAX 9 Completed 831 km
2026-09-27 12:38 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N75851 Boeing 737-300 Completed 3712 km
2026-09-27 09:58 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N27503 Boeing 737 MAX 9 Completed 786 km
2026-09-26 12:38 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57855 Boeing 737-300 Completed 3716 km
2026-09-26 09:48 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17456 Boeing 737 MAX 9 Completed 829 km
2026-09-25 12:42 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57870 Boeing 737-300 Completed 3765 km
2026-09-25 09:59 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17402 Boeing 737 MAX 9 Completed 824 km
2026-09-24 12:53 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N77871 Boeing 737-300 Completed 3729 km
2026-09-24 09:50 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17402 Boeing 737 MAX 9 Completed 830 km
2026-09-23 12:12 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N17594 Boeing 737-900 Completed 3741 km
2026-09-23 09:46 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N27546 Boeing 737 MAX 9 Completed 810 km
2026-09-22 12:17 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N17408 Boeing 737 MAX 9 Completed 3786 km
2026-09-22 09:56 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N75426 Boeing 737-900 Completed 815 km
2026-09-21 12:08 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N37540 Boeing 737 MAX 9 Completed 3810 km
2026-09-21 09:49 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17430 Boeing 737 MAX 9 Completed 816 km
2026-09-20 12:31 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N77587 Boeing 737 MAX 9 Completed 3932 km
2026-09-20 09:52 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N39450 Boeing 737-900 Completed 789 km
2026-09-19 12:07 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57870 Boeing 737-300 Completed 3898 km
2026-09-19 09:55 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N47533 Boeing 737 MAX 9 Completed 864 km
2026-09-18 12:54 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N47462 Boeing 737 MAX 9 Completed 3981 km
2026-09-18 10:00 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N37555 Boeing 737 MAX 9 Completed 736 km
2026-09-17 12:16 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N27515 Boeing 737 MAX 9 Completed 3970 km
2026-09-17 09:54 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N62892 Boeing 737-900 Completed 802 km
2026-09-16 12:19 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N77544 Boeing 737 MAX 9 Completed 4031 km
2026-09-16 09:50 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N17443 Boeing 737 MAX 9 Completed 774 km
2026-09-15 12:12 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N17405 Boeing 737 MAX 9 Completed 4021 km
2026-09-15 09:55 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N77559 Boeing 737 MAX 9 Completed 849 km
2026-09-14 12:05 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N77598 Boeing 737 MAX 9 Completed 4124 km
2026-09-14 09:51 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N47462 Boeing 737 MAX 9 Completed 862 km
2026-09-13 12:06 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N17432 Boeing 737 MAX 9 Completed 4083 km
2026-09-13 09:57 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N77598 Boeing 737 MAX 9 Completed 797 km
2026-09-12 12:09 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57868 Boeing 737-300 Completed 4129 km
2026-09-12 09:50 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N77571 Boeing 737 MAX 9 Completed 794 km
2026-09-11 12:04 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N34460 Boeing 737-900 Completed 3986 km
2026-09-11 09:56 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N47457 Boeing 737 MAX 9 Completed 865 km
2026-09-10 12:10 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N47457 Boeing 737 MAX 9 Completed 4094 km
2026-09-10 09:47 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N38443 Boeing 737-900 Completed 792 km
2026-09-09 12:07 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N27519 Boeing 737 MAX 9 Completed 3988 km
2026-09-09 09:58 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N57478 Boeing 737 MAX 9 Completed 792 km
2026-09-08 11:57 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57478 Boeing 737 MAX 9 Incomplete (signal lost) ~3810 km est. (911 km recorded)
2026-09-08 09:49 UTC UAL1734 BOS → IAD
Boston → Washington, DC
 N37440 Boeing 737 MAX 9 Completed 849 km
2026-09-07 12:26 UTC UAL1734 IAD → LAX
Washington, DC → Los Angeles
 N57852 Boeing 737-300 Completed 3968 km

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