Route reliability record
PHX→YUM
Phoenix to Yuma
- Flights
- 1,328
- Period
- July 2025 to June 2026
- Distance
- 160 mi
- Carriers
- 2
This route earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 1,328 PHX to YUM flights, with a median arrival 8 minutes early.
Best time to fly PHX to YUM: a 8am–11am departure, ideally on a Wednesday. Flights in that window arrived on time 87.2% of the time and Wednesday flights 88.8%, against 84.9% for the route overall.
Set against the rest of the country, this route's record is 7 points better than the US average of 77.6%. That gap is worth roughly 73 fewer late arrivals for every thousand flights.
Key figures
On time
84.9%
Arrivals under 15 minutes late, of 1,311 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
1.20%
National rate is 1.81%
Best carrier
SkyWest
84.0% on time across 1,010 flights
These figures cover 1,328 flights between July 2025 and June 2026. The median arrival is 8 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Which airline is most reliable on PHX to YUM
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 318 | 87.9% | 53 min | 3.77% | A− |
| SkyWest Airlines | 1,010 | 84.0% | 79 min | 0.40% | B+ |
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 13 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am406 flights87.2%
- 11am–2pm167 flights81.2%
- 2pm–5pm357 flights85.8%
- 5pm–8pm111 flights74.5%
- 8pm–5am287 flights86.8%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 87.2% of the time, against 74.5% for the evening window. That is 13 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 406 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 13 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
June is the worst month at 80.0% on time, 13 points below August, the best at 93.3%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 149 flights.
Across the week, Wednesday is the strongest day at 88.8% on time and Sunday the weakest at 81.5%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Carrier accounts for 54% of the 15,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 54%Carrier
- 35%Late-arriving aircraft
- 6%National Airspace System
- 5%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 15,000 reported delay minutes here, that single category outweighs weather by 7 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 14,658 reported delay minutes.
The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 7,958 of the 15,000 delay minutes reported here.
Cancellations sit at 1.20% against a national 1.81%, which is ordinary. Diversions add another 0.08%.
Connections and stage length
What a delay here actually costs
5.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
At 160 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 85.0% on time across 1,328 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,328 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in YUM after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. August runs 93.3% on time and June 80.0%, a swing of 13 points. If the dates move at all, move them out of June before you think about anything else. 1,311 completed flights over 12 months sit behind that.
Common questions
PHX to YUM questions
How often is PHX to YUM delayed?
About one flight in seven arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 15.1% of the 1,328 flights in this analysis, against 22.4% nationally. Delayed flights are late by a little over an hour on average.
How reliable is PHX to YUM compared with the rest of the country?
84.9% of flights arrive on time here against a national 77.6%, a difference of 7 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on PHX to YUM?
The 8am–11am departure window is the strongest at 87.2% on time. The 5pm–8pm window is the weakest at 74.5%, 13 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are June delays on PHX to YUM?
June is the weakest month at 80.0% on time, compared with 93.3% in August. Across the year that is 13 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- YUM to PHX — the return legseparate record
- Phoenix Sky Harbor International (PHX) delay statistics
- Envoy Air on PHX to YUM87.9%
- SkyWest Airlines on PHX to YUM84.0%
- PHX to DEN, a related route77.2%
- PHX to LAX, a related route82.8%
- PHX to SEA, a related route82.7%
- Envoy Air on-time record87.9%
- SkyWest Airlines on-time record84.0%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Direction matters. PHX to YUM and YUM to PHX are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.