IAD (Washington) to PHX (Phoenix) flights arrive on time 81% of the time. The most reliable airline on this route is United Airlines at 84%. The average delay is 64 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.IAD → PHX
IAD (Washington) to PHX (Phoenix)
IAD → PHX on-time performance by month
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This route is on time most of the time. About 81% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
United Airlines edges out Southwest Airlines on this route — 84% vs 70% on time.
Airline Comparison
United Airlines leads at 84% on time; Southwest Airlines trails at 70%.
Accurate?
Good to know
Departing from IAD
83% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. IAD has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at PHX
82% on timeWhen flights into PHX are late, the average delay is 67 minutes. Build buffer if you have ground plans.
If connecting at PHX: TSA is ~11 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.