Medford (MFR) to Seattle (SEA): On-Time Performance
Data through July 2026
Medford (MFR) to Seattle (SEA) effectively runs on two schedules. In March 2025, 99% of arrivals were on time; in September 2024 that fell to 83% — a 16-point seasonal swing. Across the full period the route averages 90% on-time against a national 78%.
- On-time
- 90%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 3.5
- last 12 months
- Duration
- 1h 36m
- scheduled
- Distance
- 352 mi
Monthly on-time trend
Best time to fly from MFR to SEA
Aim for departures around 6 a.m. (96% on-time); avoid 1 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 89% | 10 min |
| Tuesday | 90% | 8 min |
| Wednesdaybest | 92% | 8 min |
| Thursday | 91% | 7 min |
| Friday | 91% | 8 min |
| Saturday | 90% | 7 min |
| Sunday | 88% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft4%
- Airline operations45%
- National airspace system7%
- Weather44%
Frequently asked questions
- How often are flights from MFR to SEA delayed?
- 10% of MFR–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 9 minutes.
- What is the best time of day to fly from MFR to SEA?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 1 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MFR to SEA?
- The scheduled MFR–SEA flight time averages 1h 36m over 352 miles. Actual arrival times vary — flights on this route land 15+ minutes late 10% of the time.
- How often are MFR to SEA flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MFR to SEA?
- September 2024 was the roughest month in this dataset, with only 83% of arrivals on time. The best was March 2025 at 99%. If your dates are flexible, that 16-point gap is worth planning around.
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Based on 2,373 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.