OnTimeStats

Historical on-time performance

Dallas-Fort Worth to Seattle

1,660 miData through May 2026Source: 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
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights

based on 5,201 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-time78%
    Medianon time
    p9040 min
    Cancel1.7%
    Flights710
  • Alaska Airlines
    On-time70%
    Medianon time
    p9045 min
    Cancel1.5%
    Flights1,756
  • American Airlines
    On-time64%
    Medianon time
    p9060 min
    Cancel2.8%
    Flights2,735

Why flights run late

Delay causes

  • Airline33%
  • Weather8%
  • Air traffic (NAS)19%
  • Late aircraft39%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline23%
  • Weather75%
  • Air traffic (NAS)2%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 115 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 DFW → 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 56% to 77% on time.

  • Middays77% on time · p90 35 min · 3,039 flights
  • Mornings77% on time · p90 35 min · 4,700 flights
  • Afternoons69% on time · p90 65 min · 2,645 flights
  • Evenings61% on time · p90 70 min · 2,833 flights
  • Overnights56% on time · p90 70 min · 1,785 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 71% on time.

  • Tuesdays71% on time · p90 50 min · 2,040 flights
  • Saturdays71% on time · p90 50 min · 1,943 flights
  • Wednesdays71% on time · p90 55 min · 2,060 flights
  • Fridays70% on time · p90 45 min · 2,260 flights
  • Mondays70% on time · p90 55 min · 2,250 flights
  • Thursdays70% on time · p90 55 min · 2,231 flights
  • Sundays68% on time · p90 55 min · 2,218 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.