SEA (Seattle) to DFW (Dallas) flights arrive on time 76% of the time. The most reliable airline on this route is American Airlines at 80%. The average delay is 72 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.SEA → DFW
SEA (Seattle) to DFW (Dallas)
SEA → DFW on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
American Airlines is significantly more reliable on this route at 80% on time vs Frontier Airlines at 54%.
Airline Comparison
American Airlines leads at 80% on time; Frontier Airlines trails at 54%.
Accurate?
Good to know
Departing from SEA
82% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.
TSA is currently ~22 min. Best time: 4 AM (about 5 min).
Arriving at DFW
77% on timeWhen flights into DFW are late, the average delay is 80 minutes. Build buffer if you have ground plans.
If connecting at DFW: TSA is ~20 min right now. Allow at least 60 minutes for a domestic connection.
DFW has a 2.5% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
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Data last updated April 2026. Source: Bureau of Transportation Statistics.