Schedule: FAA flight plans.
DELTA · FLIGHT DL 474
SCHEDULED
Today
DL 474 · SEA → BOS
departs 3:31 PM PT · arrives 11:44 PM ET
Your aircraft is N577DN (A21N), coming in as DL 332 from BOS: landed 1:26 PM PT.
Forecast issued Mon 5:00 PM ET · 2h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
65%
chance · ±0 pts
+38 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
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How late will it get to BOS?
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On time or early
35%
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15–30 min late
44%
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30 min–1 hour late
0%
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1–2 hours late
16%
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Over 2 hours late
4%
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Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.