Route reliability record
DEN→MFR
Denver to Medford
- Flights
- 730
- Period
- September 2025 to August 2026
- Distance
- 964 mi
- Carriers
- 2
This route lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 55 minutes on average. That rests on 730 DEN to MFR flights, with a median arrival right on schedule.
Best time to fly DEN to MFR: a 8pm–5am departure, ideally on a Friday. Flights in that window arrived on time 93.9% of the time and Friday flights 82.4%, against 77.1% 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
77.1%
Arrivals under 15 minutes late, of 724 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
Best carrier
United
76.8% on time across 574 flights
These figures cover 730 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Which airline is most reliable on DEN 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 |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 156 | 77.9% | 57 min | 0.00% | B+ |
| United Airlines | 574 | 76.8% | 53 min | 0.35% | B+ |
Flight by flight
Flights on DEN to MFR
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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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 18 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am—
- 11am–2pm365 flights76.0%
- 2pm–5pm1 flights—
- 5pm–8pm331 flights76.5%
- 8pm–5am33 flights93.9%
Scale runs 70% to 100%. 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 76.0% on time against 93.9% for 8pm–5am. 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 11am–2pm window is the busiest, with 365 flights scheduled in it.
Explore
Filter DEN 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 DEN to MFR, the best departure window is 8pm–5am at 93.9% on time and the worst is 11am–2pm at 76.0%, a wide gap of 17.9 points. All US flights leaving 8pm–5am ran 70.1%.
- 5–8am—
- 8–11am—
- 11am–2pm76.0%
- 2–5pm—
- 5–8pm76.5%
- 8pm–5am93.9%
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 50 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 43.3% on time, 50 points below November, the best at 93.2%. 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. October was the busiest month here, with 63 flights.
Across the week, Friday is the strongest day at 82.4% on time and Sunday the weakest at 71.2%, a spread of 11 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 48% of the 8,917 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 26%Carrier
- 21%National Airspace System
- 5%Extreme weather
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,917 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 8,917 reported delay minutes.
Cancellations are rare at 0.27%, 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
Badly late arrivals are rare here: only 4.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 964 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 81.5% on time across 728 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. 730 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. 730 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 77.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 724 completed flights over 12 months sit behind that.
Common questions
DEN to MFR questions
How often is DEN to MFR delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.9% of the 730 flights in this analysis, against 22.7% nationally. Delayed flights are late by roughly 55 minutes on average.
How reliable is DEN to MFR compared with the rest of the country?
77.1% of flights arrive on time here against a national 77.3%, a difference of half a point against it. That is worth a B+ on this site's grading scale.
What time of day has the fewest delays on DEN to MFR?
The 8pm–5am departure window is the strongest at 93.9% on time. The 11am–2pm window is the weakest at 76.0%, 18 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 DEN to MFR?
June is the weakest month at 43.3% on time, compared with 93.2% in November. Across the year that is 50 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 DEN — the return legseparate record
- Denver International (DEN) delay statistics
- SkyWest Airlines on DEN to MFR77.9%
- United Airlines on DEN to MFR76.8%
- DEN to PHX, a related route75.6%
- SEA to MFR, a related route86.2%
- DEN to SLC, a related route78.2%
- SkyWest Airlines on-time record77.9%
- United Airlines on-time record76.8%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. DEN to MFR and MFR to DEN 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.