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United Airlines

Is UA421 delayed?

No observed occurrence is available for this date.

Recent arrivals

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

  • IAD → ORD

    14 min early

  • DEN → IAD

    6 min early

  • IAD → ORD

    On time

  • DEN → IAD

    26 min early

  • IAD → ORD

    9 min early
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
52
Arrivals over 15 minutes late
6
Observed cancellations
0
Observed occurrences
55

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

UA421 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedDullesChicago
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-14
Sep 16, 2026ArrivedDenverDulles
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-6
Sep 15, 2026ArrivedDullesChicago
0
Sep 15, 2026ArrivedDenverDulles
-26
Sep 14, 2026ArrivedDullesChicago
-9
Sep 14, 2026ArrivedDenverDulles
-23
Sep 13, 2026ArrivedDullesChicago
6
Sep 13, 2026ArrivedDenverDulles
-4
Sep 12, 2026ArrivedDullesChicago
-2
Sep 12, 2026ArrivedDenverDulles
-18
Sep 11, 2026ArrivedDullesChicago
-34
Sep 11, 2026ArrivedDenverDulles
-10
Sep 10, 2026ArrivedDullesChicago
-6
Sep 10, 2026ArrivedDenverDulles
-24
Sep 9, 2026ArrivedDullesChicago
-6
Sep 9, 2026ArrivedDenverDulles
-15
Sep 8, 2026ArrivedDullesChicago
-2
Sep 8, 2026ArrivedDenverDulles
-17
Sep 7, 2026ArrivedDullesChicago
-10
Sep 7, 2026ArrivedDenverDulles
9
Sep 6, 2026ArrivedDullesChicago
23
Sep 6, 2026ArrivedDenverDulles
-8
Sep 5, 2026ArrivedDullesChicago
-21
Sep 5, 2026ArrivedDenverDulles
-23
Sep 4, 2026ArrivedDullesChicago
-1
Sep 4, 2026ArrivedDenverDulles
-14
Sep 3, 2026ArrivedDenverDulles
40
Sep 2, 2026ArrivedDullesChicago
-22
Sep 2, 2026ArrivedDenverDulles
-21
Sep 1, 2026ArrivedDullesChicago
17
Sep 1, 2026ArrivedDenverDulles
-10
Aug 31, 2026ArrivedDullesChicago
-4
Aug 31, 2026ArrivedDenverDulles
-2
Aug 30, 2026ArrivedDullesChicago
56
Aug 30, 2026ArrivedDenverDulles
-2
Aug 29, 2026ArrivedDullesChicago
-28
Aug 29, 2026ArrivedDenverDulles
-2
Aug 28, 2026ArrivedDullesChicago
-20
Aug 28, 2026ArrivedDenverDulles
12
Aug 27, 2026ArrivedDullesChicago
51
Aug 27, 2026ArrivedDenverDulles
5
Aug 26, 2026ArrivedDullesChicago
-16
Aug 26, 2026ArrivedDenverDulles
-23
Aug 25, 2026ArrivedDullesChicago
-36
Aug 25, 2026ArrivedDenverDulles
118
Aug 24, 2026ArrivedDullesChicago
-20
Aug 24, 2026ArrivedDenverDulles
-33
Aug 23, 2026ArrivedDullesChicago
-17
Aug 23, 2026ArrivedDenverDulles
-12
Aug 21, 2026ArrivedDullesChicago
-2
Aug 21, 2026ArrivedDenverDulles
0
Aug 20, 2026ArrivedDullesChicago
1

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