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American Airlines

Is AA4439 delayed?

Service date: · Scheduled departure date (America/New_York)

Arrived

21 min early

Official source · Updated

Departure

Boston

BOS

Actual

Scheduled 20:21

Sep 7

Arrival

Buffalo

BUF

Actual

Scheduled 01:40

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • BOS → BUF

    93 min late

  • BOS → BUF

    36 min late

  • BOS → BUF

    4 min late

  • BOS → BUF

    On time

  • BOS → BUF

    35 min late
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
16
Arrivals over 15 minutes late
10
Observed cancellations
0
Observed occurrences
26

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

AA4439 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 17, 2026ArrivedBostonBuffalo
View this flight’s market
93
Sep 16, 2026ArrivedBostonBuffalo
36
Sep 15, 2026ArrivedBostonBuffalo
4
Sep 14, 2026ArrivedBostonBuffalo
0
Sep 11, 2026ArrivedBostonBuffalo
35
Sep 10, 2026ArrivedBostonBuffalo
-9
Sep 9, 2026ArrivedBostonBuffalo
42
Sep 8, 2026ArrivedBostonBuffalo
29
Sep 7, 2026ArrivedBostonBuffalo
-21
Sep 6, 2026ArrivedBostonBuffalo
104
Sep 5, 2026ArrivedBostonBuffalo
62
Sep 4, 2026ArrivedBostonBuffalo
47
Sep 3, 2026ArrivedBostonBuffalo
120
Sep 1, 2026ArrivedBostonBuffalo
-28
Aug 28, 2026ArrivedBostonBuffalo
-16
Aug 21, 2026ArrivedBostonBuffalo
21

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