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United Airlines

Is UA4547 delayed?

Service date: · Scheduled departure date (UTC)

Arrived

16 min early

Official source · Updated

Departure

Buffalo

BUF

Actual

Scheduled 00:13

Sep 16

Arrival

Dulles

IAD

Actual

Scheduled 21:11

Sep 15

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.

  • BUF → IAD

    21 min early

  • BUF → IAD

    8 min early

  • BUF → IAD

    16 min early

  • BUF → IAD

    17 min early

  • BUF → IAD

    17 min early
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
13
Arrivals over 15 minutes late
1
Observed cancellations
0
Observed occurrences
13

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

UA4547 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 18, 2026ArrivedBuffaloDulles
View this flight’s market
-21
Sep 17, 2026ArrivedBuffaloDulles
-8
Sep 16, 2026ArrivedBuffaloDulles
-16
Sep 15, 2026ArrivedBuffaloDulles
-17
Sep 14, 2026ArrivedBuffaloDulles
-17
Sep 12, 2026ArrivedBuffaloDulles
-17
Sep 11, 2026ArrivedBuffaloDulles
-19
Sep 10, 2026ArrivedBuffaloDulles
-19
Sep 9, 2026ArrivedBuffaloDulles
-20
Sep 7, 2026ArrivedSpringfieldChicago
16
Sep 6, 2026ArrivedSpringfieldChicago
-50
Sep 5, 2026ArrivedSpringfieldChicago
-27
Sep 4, 2026ArrivedSpringfieldChicago
-24

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