SEA (Seattle) to DFW (Dallas) flights arrive on time 79% of the time. The most reliable airline on this route is Alaska Airlines at 80%. The average delay is 44 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated March 2026.SEA → DFW
SEA (Seattle) to DFW (Dallas)
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SEA → DFW on-time performance by month
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This route is on time most of the time. About 79% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
Airlines are roughly equal on this route — Alaska Airlines leads slightly at 80% vs JetBlue Airways at 78%.
Airline Comparison
Alaska Airlines leads at 80% on time; JetBlue Airways trails at 78%.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.