Carrier route record
OOSFO→MFR
SkyWest Airlines · San Francisco to Medford
- Flights
- 620
- Period
- September 2025 to August 2026
- Share of route
- 61%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SFO to MFR 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 a little over an hour on average. That rests on 620 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on SFO to MFR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.3%
Arrivals under 15 minutes late, of 600 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
1.77%
National rate is 1.89%
Whole route
78.0%
Every carrier on SFO to MFR, 1,017 flights
These figures cover 620 flights between September 2025 and August 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
SkyWest against every carrier on SFO to MFR
SkyWest flew 620 of the 1,017 flights on SFO to MFR, most of the route. Its 77.3% on time is about level with the route as a whole at 78.0%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 79.1% to SkyWest at 77.3%.
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 | 397 | 79.1% | 58 min | 0.00% | B+ |
| SkyWest Airlines (this page) | 620 | 77.3% | 79 min | 1.77% | 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
When SkyWest runs best on this route
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 620 flights.
- 5am–8am—
- 8am–11am152 flights76.5%
- 11am–2pm—
- 2pm–5pm314 flights75.8%
- 5pm–8pm4 flights—
- 8pm–5am150 flights80.9%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is the strongest at 80.9% on time. The full set of windows spans 5 points.
Across the year
SkyWest on SFO to MFR through the year
October is the best month on the calendar at 90.9% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. December was the busiest month here, with 84 flights.
Across the week, Tuesday is the strongest day at 81.0% on time and Monday the weakest at 72.5%, a spread of 9 points.
Arrival by arrival
How late SkyWest on SFO to MFR runs when it is late
SkyWest on SFO to MFR often beats the schedule: 159 of 600 completed flights, 27%, arrived 15 minutes or more early. The 136 late arrivals split 36 under half an hour, 52 between 30 and 60 minutes, and 48 an hour or more.
- 15+ min early159 flights26.5%
- Within 15 min305 flights50.8%
- 15–29 min late36 flights6.0%
- 30–59 min late52 flights8.7%
- 1–2 hours late28 flights4.7%
- 2+ hours late20 flights3.3%
Scale runs 0% to 100%.
Share of 600 completed flights by arrival against schedule.
37 of 161 late departures made up the time and arrived on time, 23% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SFO to MFR
The latest arrival of the period was on 12 January 2026, 15 hours 32 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 January 2026 | 15 hours 32 minutes | Carrier |
| 15 January 2026 | 14 hours 29 minutes | Extreme weather |
| 20 March 2026 | 10 hours 12 minutes | Late-arriving aircraft |
| 3 January 2026 | 5 hours 16 minutes | National Airspace System |
| 1 October 2025 | 4 hours 36 minutes | National Airspace System |
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 11,000 reported delay minutes.
- 30%Late-arriving aircraft
- 29%National Airspace System
- 27%Carrier
- 14%Extreme weather
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 10,689 reported delay minutes.
Cancellations sit at 1.77% against a national 1.89%, which is ordinary. Diversions add another 1.45%.
Connections and stage length
What a delay here costs
8.0% 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.
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 8pm–5am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 64.1% on time across 622 flights, 13 points below 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 13 points of difference.
One caution: this is a thin sample. 620 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 SFO to MFR
Put together: treat all of this as provisional. 620 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 77.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 600 completed flights over 12 months sit behind that.
Related
Where to go next
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.