BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DFW→SEA

Dallas/Fort Worth, TX (DFW) to Seattle, WA (SEA) flight delay odds

67.9% of 5,232 official scheduled DFW-to-SEA flights arrived on time; 18.4% arrived at least 30 minutes late and 2.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
67.9%arrived on time
18.4%30+ min late
2.1%cancelled
5,232scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.1%all scheduled flights
120+ minutes late3.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+14.2 mincompleted flights

Which departure time was most reliable for DFW to SEA?

Among qualifying DFW-to-SEA departure window results, Early morning had the highest on-time rate: 76.9% of 1,413 flights. Night was lowest at 41.2% across 272 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,41376.9%11.3%1.9%
Late morning69776.5%11.8%1.9%
Afternoon1,63668.3%19.4%2.1%
Evening1,21458.1%25.9%2.1%
Night27241.2%33.1%4.4%

Which weekday was most reliable for DFW to SEA?

Among qualifying DFW-to-SEA weekday results, Tuesday had the highest on-time rate: 71.0% of 731 flights. Sunday was lowest at 63.7% across 788 flights.

DayFlightsOn time30+ minCancelled
Monday77568.0%18.5%2.8%
Tuesday73171.0%16.1%2.1%
Wednesday71670.1%16.5%0.8%
Thursday78369.5%16.1%1.0%
Friday77068.1%18.3%1.8%
Saturday66965.3%22.9%3.0%
Sunday78863.7%20.8%3.3%

Which airline was most reliable for DFW to SEA?

Among qualifying DFW-to-SEA airline results, Delta Air Lines had the highest on-time rate: 77.4% of 712 flights. American Airlines was lowest at 63.2% across 2,736 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines2,73663.2%21.5%2.7%
Alaska Airlines1,75671.5%16.0%1.5%
Delta Air Lines71277.4%12.5%1.7%
Frontier Airlines2867.9%14.3%0.0%

Which month was most reliable for DFW to SEA?

Among qualifying DFW-to-SEA month results, February 2026 had the highest on-time rate: 77.5% of 342 flights. December 2025 was lowest at 60.3% across 453 flights.

MonthFlightsOn time30+ minCancelled
July 202550661.9%23.3%1.6%
August 202547564.2%22.1%2.5%
September 202542973.7%14.5%1.4%
October 202544268.1%18.3%0.9%
November 202541272.3%17.0%1.9%
December 202545360.3%22.7%0.7%
January 202640065.5%15.0%9.5%
February 202634277.5%12.6%0.3%
March 202638771.8%14.2%2.6%
April 202641376.5%13.1%0.7%
May 202648367.7%19.0%2.1%
June 202649061.4%24.5%1.6%

What drove DFW to SEA delay minutes?

Late aircraft was the largest recorded DFW-to-SEA delay category, accounting for 39.0% of 100,021 BTS-attributed delay minutes during July 2025–June 2026.

Airline33.2%
Late aircraft39.0%
National airspace18.0%
Weather9.2%
Security0.6%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.