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United Airlines

Is UA599 delayed?

Each route and date is shown separately. Confirm that both airports match your booking.

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

Arrived

6 min late

Updated

Departure

Dulles

IAD

Actual

Scheduled 17:26

Aug 24

Arrival

Denver

DEN

Actual

Scheduled 19:30

Aug 24

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

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

DepartedLast reported

22 min late

This update may be out of date.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

Update time unavailable

Departure

San Francisco

SFO

Actual

Scheduled 08:10

Aug 24

Arrival

Dulles

IAD

Scheduled

Not available

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available
Route overview: Dulles → DenverIADDEN
Route overview
Route overview: San Francisco → DullesSFOIAD
Route overview

Recent arrivals

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

  • IAD → DEN

    64 min late

  • SFO → IAD

    15 min late

  • IAD → DEN

    7 min early

  • SFO → IAD

    35 min late

  • IAD → DEN

    2 min early
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
39
Arrivals over 15 minutes late
13
Observed cancellations
0
Observed occurrences
57

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

UA599 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedDullesDenver
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64
Sep 16, 2026ArrivedSan FranciscoDulles
15
Sep 15, 2026ArrivedDullesDenver
-7
Sep 15, 2026ArrivedSan FranciscoDulles
35
Sep 14, 2026ArrivedDullesDenver
-2
Sep 14, 2026ArrivedSan FranciscoDulles
-25
Sep 13, 2026ArrivedDullesDenver
61
Sep 13, 2026ArrivedSan FranciscoDulles
-31
Sep 12, 2026ArrivedDullesDenver
-8
Sep 12, 2026ArrivedSan FranciscoDulles
7
Sep 11, 2026ArrivedDullesDenver
-26
Sep 11, 2026ArrivedSan FranciscoDulles
-18
Sep 10, 2026ArrivedDullesDenver
-26
Sep 10, 2026ArrivedSan FranciscoDulles
-34
Sep 9, 2026ArrivedDullesDenver
-11
Sep 9, 2026ArrivedSan FranciscoDulles
-9
Sep 8, 2026ArrivedDullesDenver
17
Sep 8, 2026ArrivedSan FranciscoDulles
44
Sep 7, 2026ArrivedDullesDenver
-37
Sep 7, 2026ArrivedSan FranciscoDulles
37
Sep 6, 2026ArrivedDullesDenver
6
Sep 6, 2026ArrivedSan FranciscoDulles
-18
Sep 5, 2026ArrivedDullesDenver
-33
Sep 5, 2026ArrivedSan FranciscoDulles
-5
Sep 4, 2026ArrivedDullesDenver
33
Sep 4, 2026ArrivedSan FranciscoDulles
69
Sep 3, 2026ArrivedDullesDenver
-43
Sep 3, 2026ArrivedSan FranciscoDulles
22
Sep 2, 2026ArrivedDullesDenver
45
Sep 2, 2026ArrivedSan FranciscoDulles
1
Sep 1, 2026ArrivedDullesDenver
-21
Aug 31, 2026ArrivedDullesDenver
-32
Aug 30, 2026ArrivedDullesDenver
-1
Aug 29, 2026ArrivedDullesDenver
-20
Aug 28, 2026ArrivedDullesDenver
18
Aug 27, 2026ArrivedDullesDenver
24
Aug 26, 2026ArrivedDullesDenver
43
Aug 25, 2026ArrivedDullesDenver
-22
Aug 24, 2026ArrivedDullesDenver
6

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