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United Airlines

Is UA4558 delayed?

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

Last reported

Cancelled

This update may be out of date. Check with your airline.

Update time unavailable

Departure

Dulles

IAD

Scheduled

Sep 18

Arrival

Buffalo

BUF

Scheduled

Sep 18

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available

Recent arrivals

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

  • IAD → BUF

    8 min early

  • IAD → BUF

    3 min late

  • IAD → BUF

    9 min late

  • IAD → BUF

    208 min late

  • IAD → BUF

    11 min early
Flight history and details

Aug 25, 2026 — Sep 24, 2026

Observed arrivals
15
Arrivals over 15 minutes late
1
Observed cancellations
1
Observed occurrences
18

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

UA4558 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 22, 2026ArrivedDullesBuffalo
-8
Sep 21, 2026ArrivedDullesBuffalo
3
Sep 20, 2026ArrivedDullesBuffalo
9
Sep 18, 2026CancelledDullesBuffaloNot available
Not available
Sep 17, 2026ArrivedDullesBuffalo
208
Sep 16, 2026ArrivedDullesBuffalo
-11
Sep 15, 2026ArrivedDullesBuffalo
3
Sep 14, 2026ArrivedDullesBuffalo
-7
Sep 13, 2026ArrivedDullesBuffalo
-12
Sep 11, 2026ArrivedDullesBuffalo
-5
Sep 9, 2026ArrivedDullesBuffalo
-6
Sep 8, 2026ArrivedDullesBuffalo
-11
Sep 7, 2026ArrivedHuntsvilleHouston
-35
Sep 6, 2026ArrivedHuntsvilleHouston
-29
Sep 5, 2026ArrivedHuntsvilleHouston
-29
Sep 4, 2026ArrivedHuntsvilleHouston
-10

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