OnTimeStats

Historical on-time performance

Medford to Seattle

352 miData through May 2026Source: US DOT · BTS

Flights on MFR–SEA arrive on time 90% of the time over the last 12 months.

On-time rate90%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 1,205 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time90%
    Medianon time
    p9010 min
    Cancel1.2%
    Flights1,205

Why flights run late

Delay causes

  • Airline54%
  • Weather36%
  • Air traffic (NAS)5%
  • Late aircraft4%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather60%
  • Air traffic (NAS)40%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 15 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MFR → SEA

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 85% to 91% on time.

  • Mornings91% on time · p90 5 min · 1,097 flights
  • Evenings91% on time · p90 10 min · 994 flights
  • Middays85% on time · p90 20 min · 1,056 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 86% to 93% on time.

  • Thursdays93% on time · p90 5 min · 484 flights
  • Wednesdays91% on time · p90 10 min · 468 flights
  • Saturdays90% on time · p90 10 min · 375 flights
  • Fridays89% on time · p90 10 min · 481 flights
  • Tuesdays89% on time · p90 15 min · 476 flights
  • Mondays87% on time · p90 15 min · 476 flights
  • Sundays86% on time · p90 25 min · 458 flights

Keep exploring

Related pages

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.