Route reliability record
YUM→PHX
Yuma to Phoenix
- Flights
- 1,328
- Period
- July 2025 to June 2026
- Distance
- 160 mi
- Carriers
- 2
This route earns an A. 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 an hour and a half. That rests on 1,328 YUM to PHX flights, with a median arrival 9 minutes early.
Best time to fly YUM to PHX: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 95.1% of the time and Wednesday flights 91.0%, against 85.0% 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 74 fewer late arrivals for every thousand flights.
Key figures
On time
85.0%
Arrivals under 15 minutes late, of 1,311 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
1.20%
National rate is 1.81%
Best carrier
SkyWest
85.6% on time across 1,010 flights
These figures cover 1,328 flights between July 2025 and June 2026. The median arrival is 9 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 YUM to PHX
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 |
|---|---|---|---|---|---|
| SkyWest Airlines | 1,010 | 85.6% | 106 min | 0.40% | A+ |
| Envoy Airthin sample | 318 | 83.0% | 69 min | 3.77% | 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 20 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–8am306 flights95.1%
- 8am–11am183 flights89.8%
- 11am–2pm389 flights84.7%
- 2pm–5pm96 flights81.9%
- 5pm–8pm348 flights74.9%
- 8pm–5am6 flights—
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.1% of the time, against 74.9% for the evening window. That is 20 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 389 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 12 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.
February is the weak month at 77.2% on time, against 89.3% in August. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. January was the busiest month here, with 149 flights.
Across the week, Wednesday is the strongest day at 91.0% on time and Thursday the weakest at 81.7%. 9 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 56% of the 19,000 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.
- 56%Carrier
- 30%Late-arriving aircraft
- 9%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 56%, 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 11,000 of the 19,000 delay minutes reported here. The split is drawn from 18,910 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 95.1% on time 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
6.3% 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 an hour and a half, 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 5am–8am window matters as much as it does.
The return leg runs 84.9% 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 PHX 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 89.3% on time and February 77.2%, a swing of 12 points. If the dates move at all, move them out of February before you think about anything else. 1,311 completed flights over 12 months sit behind that.
Common questions
YUM to PHX questions
How often is YUM to PHX 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 15.0% of the 1,328 flights in this analysis, against 22.4% nationally. Delayed flights are late by an hour and a half on average.
How reliable is YUM to PHX compared with the rest of the country?
85.0% of flights arrive on time here against a national 77.6%, a difference of 7 points in its favour. That is worth a A on this site's grading scale.
What time of day has the fewest delays on YUM to PHX?
The 5am–8am departure window is the strongest at 95.1% on time. The 5pm–8pm window is the weakest at 74.9%, 20 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 February delays on YUM to PHX?
February is the weakest month at 77.2% on time, compared with 89.3% in August. Across the year that is 12 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
- PHX to YUM — the return legseparate record
- Phoenix Sky Harbor International (PHX) delay statistics
- SkyWest Airlines on YUM to PHX85.6%
- Envoy Air on YUM to PHX83.0%
- DEN to PHX, a related route75.7%
- LAX to PHX, a related route80.9%
- SEA to PHX, a related route79.2%
- SkyWest Airlines on-time record85.6%
- Envoy Air on-time record83.0%
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
Direction matters. YUM to PHX and PHX to YUM 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.