Schedule: FAA flight plans.
UNITED · FLIGHT UA 1866
DELAYED: NOW PLANNED TO TAKE OFF 11:18 PM ET (43 MIN LATER THAN FIRST FILED)
Today
UA 1866 · IAD → BOS
departs 10:23 PM ET · arrives 11:59 PM ET
Forecast issued Mon 11:00 AM ET · 11h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
85%
chance · ±0 pts
+31 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
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How late will it get to BOS?
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On time or early
40%
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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
12%
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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%.