Route reliability record
PHX→MFR
Phoenix to Medford
- Flights
- 754
- Period
- September 2025 to August 2026
- Distance
- 855 mi
- Carriers
- 2
This route lands a B+, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 754 PHX to MFR flights, with a median arrival 10 minutes early.
Best time to fly PHX to MFR: a 8am–11am departure, ideally on a Wednesday. Flights in that window arrived on time 84.5% of the time and Wednesday flights 84.6%, against 80.9% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.9%
Arrivals under 15 minutes late, of 747 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
0.40%
National rate is 1.89%
Best carrier
SkyWest
78.2% on time across 516 flights
These figures cover 754 flights between September 2025 and August 2026. The median arrival is 10 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 PHX to MFR
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 | 238 | 86.8% | 47 min | 0.84% | A+ |
| SkyWest Airlines | 516 | 78.2% | 81 min | 0.19% | 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.
Departure window
The best time of day to leave
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 754 flights.
- 5am–8am—
- 8am–11am232 flights84.5%
- 11am–2pm126 flights77.0%
- 2pm–5pm70 flights81.2%
- 5pm–8pm110 flights84.1%
- 8pm–5am216 flights77.5%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 77.0% on time against 84.5% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 232 flights scheduled in it.
Explore
Filter PHX to MFR 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 PHX to MFR, the best departure window is 8am–11am at 84.5% on time and the worst is 11am–2pm at 77.0%, a real gap of 7.5 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am84.5%
- 11am–2pm77.0%
- 2–5pm81.2%
- 5–8pm84.1%
- 8pm–5am77.5%
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 24 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.
September is the best month on the calendar at 92.9% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. November was the busiest month here, with 78 flights.
Across the week, Wednesday is the strongest day at 84.6% on time and Saturday the weakest at 74.0%, a spread of 11 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 54% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 35%Carrier
- 7%National Airspace System
- 4%Extreme weather
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 10,498 reported delay minutes.
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,715 of the 10,000 delay minutes reported here.
Cancellations are rare at 0.40%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
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 a little over an hour, which a normal layover absorbs.
The 855 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 is a different operation and performs like one: it runs 84.4% on time across 754 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
One caution: this is a thin sample. 754 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
Work out the risk of missing a connection in MFR after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 754 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 80.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 747 completed flights over 12 months sit behind that.
Common questions
PHX to MFR questions
How often is PHX to MFR delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 19.1% of the 754 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
How reliable is PHX to MFR compared with the rest of the country?
80.9% of flights arrive on time here against a national 77.3%, a difference of 4 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 MFR?
The 8am–11am departure window is the strongest at 84.5% on time. The 11am–2pm window is the weakest at 77.0%, 8 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 March delays on PHX to MFR?
March is the weakest month at 69.4% on time, compared with 92.9% in September. Across the year that is 24 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
- MFR to PHX — the return legseparate record
- Phoenix Sky Harbor International (PHX) delay statistics
- Envoy Air on PHX to MFR86.8%
- SkyWest Airlines on PHX to MFR78.2%
- PHX to DEN, a related route76.7%
- SEA to MFR, a related route86.2%
- PHX to LAX, a related route82.1%
- Envoy Air on-time record86.8%
- SkyWest Airlines on-time record78.2%
- Why the first flight of the morning is statistically safest
- Worst months to fly in the US, ranked by the data
Direction matters. PHX to MFR and MFR 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.