OnTimeStats

Historical on-time performance

Dallas-Fort Worth to Seattle

1,660 miData through Dec 2025Source: US DOT · BTS

Flights on DFW–SEA arrive on time 68% of the time over the last 12 months.

On-time rate68%arrived within 15 min
Median delayon timetypical arrival
p90 delay55 min1 in 10 flights is worsetail risk
Cancelled1.7%of scheduled flights

based on 5,208 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time80%
    Medianon time
    p9040 min
    Cancel0.9%
    Flights687
  • Alaska Airlines
    On-time66%
    Medianon time
    p9055 min
    Cancel1.2%
    Flights1,759
  • American Airlines
    On-time66%
    Medianon time
    p9060 min
    Cancel2.1%
    Flights2,762

Why flights run late

Delay causes

  • Airline30%
  • Weather9%
  • Air traffic (NAS)19%
  • Late aircraft42%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

Advertisement

Keep exploring

Related pages

Delay predictorfor this route→DFW airportDallas-Fort Worth→SEA airportSeattle→Delta Air Lines on this routecarrier detail→Delta Air Linesairline profile→

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.