Carrier route record
OOMFR→SFO
SkyWest Airlines · Medford to San Francisco
- Flights
- 625
- Period
- July 2025 to June 2026
- Share of route
- 61%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on MFR to SFO sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 10 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 625 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.6%, so SkyWest on MFR to SFO runs 10 points behind the country as a whole. Across a thousand flights that is about 96 extra late arrivals.
Key figures
On time
68.0%
Arrivals under 15 minutes late, of 616 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
1.28%
National rate is 1.81%
Whole route
70.3%
Every carrier on MFR to SFO, 1,031 flights
These figures cover 625 flights between July 2025 and June 2026. Beyond the headline rate, 10.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on MFR to SFO
SkyWest flew 625 of the 1,031 flights on MFR to SFO, most of the route. Its 68.0% on time is 2 points worse than the route as a whole, which runs 70.3%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 73.6% to SkyWest at 68.0%.
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 |
|---|---|---|---|---|---|
| United Airlines | 406 | 73.6% | 53 min | 0.00% | C+ |
| SkyWest Airlines (this page) | 625 | 68.0% | 79 min | 1.28% | C |
Departure window
When SkyWest runs best on this route
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. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am151 flights80.5%
- 8am–11am15 flights—
- 11am–2pm—
- 2pm–5pm154 flights69.3%
- 5pm–8pm305 flights62.2%
- 8pm–5am—
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 62.2% on time, against 80.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 305 flights scheduled in it.
Across the year
SkyWest on MFR to SFO through the year
Delays peak in May, when the on-time rate falls to 58.5%. March is the strongest month at 87.8%. Moving a flexible trip across that boundary buys 29 points. January was the busiest month here, with 84 flights.
Across the week, Saturday is the strongest day at 77.4% on time and Tuesday the weakest at 62.7%. 15 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. National Airspace System accounts for 48% 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.
- 48%National Airspace System
- 25%Late-arriving aircraft
- 14%Extreme weather
- 13%Carrier
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 15,487 reported delay minutes.
48% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 7,380 minutes out of 15,000, against a national NAS share of 21%.
Cancellations sit at 1.28% against a national 1.81%, which is ordinary. Diversions add another 0.16%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 329 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 is a different operation and performs like one: it runs 79.5% on time across 623 flights, 12 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 12 points of difference.
One caution: this is a thin sample. 625 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.
What to do with this
Booking SkyWest on MFR to SFO
Put together: treat all of this as provisional. 625 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 68.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 616 completed flights over 12 months sit behind that.
Related
Where to go next
- MFR to SFO, every carrier
- SkyWest on SFO to MFR, the return leg
- United Airlines on MFR to SFO73.6%
- SkyWest Airlines network-wide record
- San Francisco International (SFO) delay statistics
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.04 million flight records
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.