DAL (Dallas) to BOS (Boston) flights arrive on time 51% of the time. The most reliable airline on this route is Southwest Airlines at 53%. The average delay is 72 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated May 2026.DAL → BOS
DAL (Dallas) to BOS (Boston)
DAL → BOS on-time performance by month
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is frequently delayed. About 51% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
Accurate?
Accurate?
Good to know
Departing from DAL
78% on timeTSA is currently ~21 min. Best time: 4 AM (about 5 min).
DAL cancels 2.1% of flights — higher than average. Have a backup plan.
Arriving at BOS
79% on timeWhen flights into BOS are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at BOS: TSA is ~21 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.