OnTimeRoutes
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Alaska Airlines SAN to IAD on-time performance

Alaska Airlines nonstop flights from San Diego to Washington · Aug 2025 – Jul 2026

On-time arrivals
87%
arrived < 15 min late
Cancelled
0.8%
3 flights
Avg arrival delay
8 min
58 min when late
Rank on route
#2 of 2
route average 88% on time

Key facts

  • Alaska Airlines flights on SAN to IAD arrived on time 87% of the time in Aug 2025 – Jul 2026.
  • 0.8% were cancelled, and 4% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 88% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (33%).

On-time trend by month

50%75%100%July 2025: 66.7% on time, 0.0% cancelledJul ’25August 2025: 82.8% on time, 3.2% cancelledAug ’25September 2025: 93.1% on time, 0.0% cancelledSep ’25October 2025: 93.3% on time, 0.0% cancelledOct ’25November 2025: 81.5% on time, 0.0% cancelledNov ’25December 2025: 90.3% on time, 0.0% cancelledDec ’25January 2026: 89.7% on time, 6.5% cancelledJan ’26February 2026: 92.9% on time, 0.0% cancelledFeb ’26March 2026: 77.4% on time, 0.0% cancelledMar ’26April 2026: 96.7% on time, 0.0% cancelledApr ’26May 2026: 96.8% on time, 0.0% cancelledMay ’26June 2026: 90.0% on time, 0.0% cancelledJun ’26July 2026: 61.3% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft33%
  • Airline (crew, maintenance, cleaning, fueling)32%
  • Air traffic control & airport congestion26%
  • Extreme weather9%
  • Security0%

Other airlines on SAN to IAD

361 Alaska Airlines flights tracked on this route; 3 cancelled, 2 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.