5 Feb
UA521
LANDED 9h 39m AGO
23:17
Boston, MA (BOS)
00:35
Newark, NJ (EWR)
01h04m
N39728 (B737)
322 km
Departed
23:17
11 hours ago
Arrived
00:35
10 hours ago
UA521
UAL521
LANDED 9h 39m AGO
Thursday, February 5 2026
18:17 EST
Scheduled 18:17
Thursday, February 5 2026
19:35 EST
ON-TIME
Scheduled 19:48
Flight info
Airline/Operator
Duration
01h04m
Distance
322 km
Operation Days
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Departure Gate
B26
Arrival Gate
A20
Departure Terminal
B
Arrival Terminal
A
Departure Taxi Time
15m
Arrival Taxi Time
-
ATC Route
KBOS.PATSS7.PATSS..NELIE.FLOSI4.KEWR/0033
Position Info
Latitude
-
Longitude
-
Altitude
-
Ground Speed
Wind
Air Temperature
Vertical Speed
Heading
-
Squawk
-
Source
-
Station
-
FIR
Aircraft Info
Aircraft Model
Registration
Mode-S
Serial Number
28944/321
Aircraft Age
Owner
Last Activity
6 hours ago
Last Known Location
Atlanta, GA, United States
Last Flight
Aircraft Type
Nr. Engines
Nr. Seats
Weight Class
Cruising Speed
Engine
Engine Type
Aircraft Category
Registrant Type
Airworthiness Class
Operation Types
Certificate Issue Date
Registration Status
Flight Activity
  • Future
  • 8 Feb
    UA521
    SCHEDULED IN 2d
    23:25
    Boston, MA (BOS)
    00:56
    Newark, NJ (EWR)
    01h31m
    B737
    322 km
  • 7 Feb
    UA521
    EST. DEPART IN 1d
    22:42
    St Louis, MO (STL)
    01:10
    Houston, TX (IAH)
    02h28m
    N462UA (A320)
    1076 km
    Estimated
    22:42
    In 1 day
    Estimated
    01:10
    In 2 days
  • 6 Feb
    UA521
    EST. DEPART IN 13h 2m
    23:17
    Boston, MA (BOS)
    00:48
    Newark, NJ (EWR)
    01h31m
    N24702 (B737)
    322 km
    Estimated
    23:17
    In 13 hours
    Estimated
    00:48
    In 15 hours
  • Past
  • 5 Feb
    UA521
    LANDED 9h 39m AGO
    23:17
    Boston, MA (BOS)
    00:35
    Newark, NJ (EWR)
    01h04m
    N39728 (B737)
    322 km
    Departed
    23:17
    11 hours ago
    Arrived
    00:35
    10 hours ago
  • 4 Feb
    UA521
    LANDED 1d AGO
    23:19
    Boston, MA (BOS)
    00:39
    Newark, NJ (EWR)
    00h52m
    N15751 (B737)
    322 km
    Departed
    23:19
    1 day ago
    Arrived
    00:39
    1 day ago
  • 3 Feb
    UA521
    LANDED 2d AGO
    23:31
    Boston, MA (BOS)
    00:42
    Newark, NJ (EWR)
    00h47m
    N27733 (B737)
    322 km
    Departed
    23:31
    2 days ago
    Arrived
    00:42
    2 days ago
  • 2 Feb
    UA521
    LANDED 3d AGO
    23:06
    Boston, MA (BOS)
    00:24
    Newark, NJ (EWR)
    00h47m
    N38727 (B737)
    322 km
    Departed
    23:06
    3 days ago
    Arrived
    00:24
    3 days ago
  • 1 Feb
    UA521
    LANDED 4d AGO
    23:33
    Boston, MA (BOS)
    01:00
    Newark, NJ (EWR)
    00h49m
    N24715 (B737)
    322 km
    Departed
    23:33
    4 days ago
    Arrived
    01:00
    4 days ago
  • 31 Jan
    UA521
    LANDED 5d AGO
    22:37
    St Louis, MO (STL)
    00:31
    Houston, TX (IAH)
    01h31m
    N454UA (A320)
    1076 km
    Departed
    22:37
    5 days ago
    Arrived
    00:31
    5 days ago
  • 30 Jan
    UA521
    LANDED 6d AGO
    23:14
    Boston, MA (BOS)
    00:25
    Newark, NJ (EWR)
    00h41m
    N16732 (B737)
    322 km
    Departed
    23:14
    6 days ago
    Arrived
    00:25
    6 days ago
DateOriginSTDATDDestinationSTAAircraftDelayStatusDurationReplay
Future
2026 Feb 8Boston, MA (BOS/KBOS)
18:25 EST
Newark, NJ (EWR/KEWR)
19:56 EST
B737
Scheduled
01h31m
2026 Feb 7St Louis, MO (STL/KSTL)
16:42 CST
Houston, TX (IAH/KIAH)
19:10 CST
A320 (N462UA)
Estimated
02h28m
2026 Feb 6Boston, MA (BOS/KBOS)
18:17 EST
Newark, NJ (EWR/KEWR)
19:48 EST
B737 (N24702)
Estimated
01h31m
Past
2026 Feb 5Boston, MA (BOS/KBOS)
18:17 EST
18:17 EST
Newark, NJ (EWR/KEWR)
19:48 EST
B737 (N39728)
Landed 19:35 EST
Time aircraft arrives at gate derived from company/airport information
01h04m
2026 Feb 4Boston, MA (BOS/KBOS)
18:17 EST
18:19 EST
Newark, NJ (EWR/KEWR)
19:48 EST
B737 (N15751)
Landed 19:39 EST
Time aircraft arrives at gate derived from company/airport information
00h52m
2026 Feb 3Boston, MA (BOS/KBOS)
18:29 EST
18:31 EST
Newark, NJ (EWR/KEWR)
19:59 EST
B737 (N27733)
Landed 19:42 EST
Time aircraft arrives at gate derived from company/airport information
00h47m
2026 Feb 2Boston, MA (BOS/KBOS)
18:17 EST
18:06 EST
Newark, NJ (EWR/KEWR)
19:48 EST
B737 (N38727)
Landed 19:24 EST
Time aircraft arrives at gate derived from company/airport information
00h47m
2026 Feb 1Boston, MA (BOS/KBOS)
18:25 EST
18:33 EST
Newark, NJ (EWR/KEWR)
19:56 EST
B737 (N24715)
Landed 20:00 EST
Time aircraft arrives at gate derived from company/airport information
00h49m
2026 Jan 31St Louis, MO (STL/KSTL)
16:42 CST
16:37 CST
Houston, TX (IAH/KIAH)
19:10 CST
A320 (N454UA)
Landed 18:31 CST
Time aircraft arrives at gate derived from company/airport information
01h31m
2026 Jan 30Boston, MA (BOS/KBOS)
18:17 EST
18:14 EST
Newark, NJ (EWR/KEWR)
19:48 EST
B737 (N16732)
Landed 19:25 EST
Time aircraft arrives at gate derived from company/airport information
00h41m

Flight history for UA521 is available for a period over 7 days under our Basic subscription. More details here
More airport data is available for purchase. Please check our On Demand API.