Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 437
SCHEDULED · TYPICAL SCHEDULE
DL 437 · LAX → BOS
departs 10:45 AM PT · arrives 7:20 PM ET
Forecast issued Tue 8:00 PM ET · 66h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
24%
chance · ±4 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
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How late will it get to BOS?
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On time or early
76%
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15–30 min late
9%
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30 min–1 hour late
8%
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1–2 hours late
5%
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Over 2 hours late
3%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.