Route reliability record
MRY→PHX
Monterey to Phoenix
- Flights
- 1,370
- Period
- September 2025 to August 2026
- Distance
- 598 mi
- Carriers
- 3
This route lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 1,370 MRY to PHX flights, with a median arrival 8 minutes early.
Best time to fly MRY to PHX: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 92.5% of the time and Tuesday flights 87.3%, against 82.7% for the route overall.
Set against the rest of the country, this route's record is 5 points better than the US average of 77.3%. That gap is worth roughly 54 fewer late arrivals for every thousand flights.
Key figures
On time
82.7%
Arrivals under 15 minutes late, of 1,350 completed flights
Avg delay
110 min
Across delayed arrivals only, not all flights
Cancelled
1.17%
National rate is 1.89%
Best carrier
SkyWest
82.3% on time across 888 flights
These figures cover 1,370 flights between September 2025 and August 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.
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Carrier by carrier
Which airline is most reliable on MRY 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 |
|---|---|---|---|---|---|
| Envoy Airthin sample | 231 | 84.6% | 42 min | 1.30% | B |
| American Airlinesthin sample | 251 | 82.7% | 156 min | 1.99% | B |
| SkyWest Airlines | 888 | 82.3% | 113 min | 0.90% | B+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Best ways to make this trip
The most reliable ways to fly Monterey to Phoenix
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 2 of the top 3 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. SJC → PHXSan Jose to Phoenix | American Airlines | 85.3% | 86.1% | 0.88% | 5am–8am, Tue | — |
| 2. MRY → PHXMonterey to Phoenix | SkyWest Airlines | 81.6% | 82.3% | 0.90% | 5am–8am, Tue | — |
| 3. SJC → PHXSan Jose to Phoenix | Southwest Airlines | 77.2% | 77.7% | 0.64% | 5am–8am, Sat | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
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 15 points, against half a point between the best and worst carrier.
- 5am–8am364 flights92.5%
- 8am–11am225 flights81.6%
- 11am–2pm336 flights78.4%
- 2pm–5pm242 flights77.9%
- 5pm–8pm203 flights79.4%
- 8pm–5am—
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.5% of the time, against 77.9% for the afternoon window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 364 flights scheduled in it.
Explore
Filter MRY to PHX by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On MRY to PHX, the best departure window is 5am–8am at 92.5% on time and the worst is 2pm–5pm at 77.9%, a wide gap of 14.6 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am92.5%
- 8–11am81.6%
- 11am–2pm78.4%
- 2–5pm77.9%
- 5–8pm79.4%
- 8pm–5am—
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 15 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.
Delays peak in October, when the on-time rate falls to 74.5%. July is the strongest month at 89.2%. Moving a flexible trip across that boundary buys 15 points. December was the busiest month here, with 132 flights.
Across the week, Tuesday is the strongest day at 87.3% on time and Sunday the weakest at 76.3%, a spread of 11 points.
Delay causes
Why this route gets delayed
Carrier accounts for 56% of the 26,000 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Carrier
- 29%Late-arriving aircraft
- 9%Extreme weather
- 5%National Airspace System
- 0%Security
The largest share of delay minutes, 56%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 14,000 of the 26,000 delay minutes reported here. The split is drawn from 25,645 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 92.5% on time here.
Cancellations sit at 1.17% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and stage length
What a delay here actually costs
7.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The 598 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 80.2% on time across 1,369 flights, within 3 points 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 1,370 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. July runs 89.2% on time and October 74.5%, a swing of 15 points. If the dates move at all, move them out of October before you think about anything else. 1,350 completed flights over 12 months sit behind that.
Common questions
MRY to PHX questions
How often is MRY to PHX delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 17.3% of the 1,370 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
How reliable is MRY to PHX compared with the rest of the country?
82.7% of flights arrive on time here against a national 77.3%, a difference of 5 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on MRY to PHX?
The 5am–8am departure window is the strongest at 92.5% on time. The 2pm–5pm window is the weakest at 77.9%, 15 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 October delays on MRY to PHX?
October is the weakest month at 74.5% on time, compared with 89.2% in July. Across the year that is 15 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 MRY — the return legseparate record
- Phoenix Sky Harbor International (PHX) delay statistics
- Envoy Air on MRY to PHX84.6%
- American Airlines on MRY to PHX82.7%
- SkyWest Airlines on MRY to PHX82.3%
- MRY to LAX, a related route86.6%
- DEN to PHX, a related route75.6%
- MRY to SFO, a related route58.5%
- Envoy Air on-time record84.6%
- American Airlines on-time record82.7%
- SkyWest Airlines on-time record82.3%
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
Direction matters. MRY to PHX and PHX to MRY 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.