Tracked live by the FAA. The scheduled times shown are from a typical Friday because the FAA's flight plan was first seen after takeoff.
UNITED · FLIGHT UA 521
LANDED 11:54 PM ET, ~43 MIN LATE
UA 521 · IAH → BOS
took off 7:50 PM CT · landed 11:54 PM ET (scheduled 6:15 PM CT → 11:19 PM ET)
Forecast issued Fri 10:00 PM ET · 3h after departure
Odds over time
Arrive at BOS more than 15 minutes late?
Late
chance · ±2 pts
+6 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
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How late did it get to BOS?
RESOLVED
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On time or early
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15–30 min late
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30 min–1 hour late
✓
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1–2 hours late
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Over 2 hours late
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Gate arrival compared with the scheduled arrival. The ranges add up to 100%.