ON TIMEBOARD

DCA → PHX on time

Washington Reagan National (Washington, DC) to Phoenix Sky Harbor (Phoenix, AZ). Every scheduled flight, September 2025 to August 2026.

On time
80%
arrived < 15 min late
Cancelled
1.5%
1,086 flights
Typical arrival
−11 min
median vs schedule
When late
+108 min
average delay
Flights / day
3
1 airline

80% of flights from Washington to Phoenix arrived on time over the past 12 months. That is about the typical U.S. route. The 7 a.m. departures ran on time 89% of the time; the 5 p.m. ones 73%. 9% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for DCA → PHX: when a flight was late, it was under 45 minutes late 49% of the time. About 1 in 15 flights landed an hour or more late, and 1 in 39 three hours or more; 1.5% were cancelled outright.

Share of all 1,086 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
American Airlines1,08680%1.5%−11 min6.5%+108 minAmerican Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at DCA). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%7 a.m. departures: 89% on time (365 flights)897a8 a.m. departures: too few flights8a9 a.m. departures: too few flights (1 flights)9a10 a.m. departures: 81% on time (363 flights)8110a11 a.m. departures: too few flights11anoon departures: too few flights12p1 p.m. departures: too few flights1p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights (69 flights)4p5 p.m. departures: 73% on time (255 flights)735p6 p.m. departures: too few flights (33 flights)6p
DCA → PHX, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On DCA → PHX, each airline's last flight of the day was cancelled 2.8% of the time, against 0.8% for its earlier flights (3.3× as often). It arrived 3+ hours late 2.2% of the time (earlier flights: 2.8%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
American Airlines5:30 p.m.2.8%2.2%0.8%first flight 7:36 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

If you need to be in PHX tonight, book an earlier flight so there's a backup if it's cancelled.

By month

Each calendar month pooled over 2023–2026. Best: December (92%). Worst: July (75%).

40%70%100%Jan: 79% on time (275 flights)79JanFeb: 85% on time (255 flights)85FebMar: 90% on time (279 flights)90MarApr: 83% on time (270 flights)83AprMay: 82% on time (279 flights)82MayJun: 84% on time (270 flights)84JunJul: 75% on time (277 flights)75JulAug: 81% on time (279 flights)81AugSep: 87% on time (270 flights)87SepOct: 87% on time (279 flights)87OctNov: 85% on time (264 flights)85NovDec: 92% on time (272 flights)92Dec

By day of week

DayFlightsOn timeCancelled
Monday15882%1.9%
Tuesday15687%1.9%
Wednesday15481%0.7%
Thursday15473%1.3%
Friday15581%1.3%
Saturday15380%1.3%
Sunday15680%1.9%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 47%Airline (crew, maintenance, ops) 30%Air traffic & airport (NAS) 18%Severe weather 5%

Cancellations: weather 14 · air traffic/airport 2

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
AA 20067:29 a.m.13888%0.0%−13 minAmerican Airlines
AA 121810:00 a.m.33481%1.2%−14 minAmerican Airlines

Worst days in the past year

DateFlightsOn timeCancelled
Aug 16, 202630%0
Sep 21, 202530%0
Feb 20, 202630%0
Feb 22, 202630%0
Feb 19, 202630%0

Nearby airport alternatives

Other ways to make the same trip, using airports within 60 miles of Washington or Phoenix. None has been clearly more reliable than DCA → PHX.

RouteFlightsOn timeCancelled
DCA → PHX (this route)1,08680%1.5%
IAD → PHX Washington Dulles to Phoenix Sky Harbor97980%0.8%
BWI → PHX Baltimore/Washington to Phoenix Sky Harbor1,21875%1.1%

Questions

How often are flights from DCA to PHX on time?

80% of 1,086 scheduled flights from Washington, DC to Phoenix, AZ arrived within 15 minutes of schedule between September 2025 and August 2026. 1.5% were cancelled.

What is the best time of day to fly DCA to PHX?

Flights scheduled to leave at 7 a.m. were the most reliable (89% on time). The 5 p.m. departures were the least (73%).

What month has the most delays from DCA to PHX?

July (75% on time). The best month is December (92%), over 2023–2026.

Is the last flight of the day from DCA to PHX more likely to be cancelled?

Yes. Each airline's last DCA–PHX flight of the day was cancelled 2.8% of the time over the past year, against 0.8% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.