ON TIMEBOARD

PHX → PSC on time

Phoenix Sky Harbor (Phoenix, AZ) to Tri Cities (Pasco/Kennewick/Richland, WA). Every scheduled flight, September 2025 to August 2026.

On time
85%
arrived < 15 min late
Cancelled
0.1%
694 flights
Typical arrival
−9 min
median vs schedule
When late
+85 min
average delay
Flights / day
2
1 airline

85% of flights from Phoenix to Pasco arrived on time over the past 12 months. That is better than the typical U.S. route. The 10 a.m. departures ran on time 91% of the time; the 8 p.m. ones 77%. 7% 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 PHX → PSC: when a flight was late, it was under 45 minutes late 47% of the time. About 1 in 15 flights landed an hour or more late, and 1 in 116 three hours or more; 0.1% were cancelled outright.

Share of all 694 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
American Airlines69485%0.1%−9 min6.5%+85 minSkyWest

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 PHX). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%10 a.m. departures: 91% on time (137 flights)9110a11 a.m. departures: 86% on time (113 flights)8611anoon departures: 84% on time (115 flights)8412p1 p.m. departures: too few flights1p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights (49 flights)4p5 p.m. departures: too few flights (45 flights)5p6 p.m. departures: too few flights (90 flights)6p7 p.m. departures: too few flights (37 flights)7p8 p.m. departures: 77% on time (106 flights)778p
PHX → PSC, 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 PHX → PSC, each airline's last flight of the day was cancelled 0.0% of the time, against 0.3% for its earlier flights, so here the last flight is actually the safer one. It arrived 3+ hours late 1.2% of the time (earlier flights: 0.6%). 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 Airlines8:34 p.m.0.0%1.2%0.3%first flight 12:01 p.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.

By month

Each calendar month pooled over 2023–2026. Best: October (92%). Worst: December (79%).

40%70%100%Jan: 88% on time (123 flights)88JanFeb: 87% on time (127 flights)87FebMar: 83% on time (157 flights)83MarApr: 91% on time (150 flights)91AprMay: 88% on time (154 flights)88MayJun: 84% on time (150 flights)84JunJul: 82% on time (153 flights)82JulAug: 89% on time (154 flights)89AugSep: 91% on time (100 flights)91SepOct: 92% on time (109 flights)92OctNov: 86% on time (117 flights)86NovDec: 79% on time (122 flights)79Dec

By day of week

DayFlightsOn timeCancelled
Monday10690%0.0%
Tuesday96——
Wednesday94——
Thursday10183%1.0%
Friday99——
Saturday93——
Sunday10578%0.0%

Why flights were late

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

Late inbound plane 51%Airline (crew, maintenance, ops) 39%Severe weather 5%Air traffic & airport (NAS) 5%

Cancellations: weather 1

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 50066:05 p.m.25383%0.0%−6 minSkyWest

Worst days in the past year

DateFlightsOn timeCancelled
Nov 30, 2025367%0
Dec 19, 20253100%0

Questions

How often are flights from PHX to PSC on time?

85% of 694 scheduled flights from Phoenix, AZ to Pasco/Kennewick/Richland, WA arrived within 15 minutes of schedule between September 2025 and August 2026. 0.1% were cancelled.

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

Flights scheduled to leave at 10 a.m. were the most reliable (91% on time). The 8 p.m. departures were the least (77%).

What month has the most delays from PHX to PSC?

December (79% on time). The best month is October (92%), over 2023–2026.

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

No, the opposite. Each airline's last PHX–PSC flight of the day was cancelled 0.0% of the time over the past year, against 0.3% 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.