Schedule: FAA flight plans.
REPUBLIC · FLIGHT YX 4439
IN THE AIR (OFF 9:29 PM ET, ETA 10:33 PM ET)
Today
YX 4439 · BOS → BUF
took off 9:29 PM ET · expected to land 10:33 PM ET (scheduled 7:47 PM ET → 9:37 PM ET)
Forecast issued Mon 8:00 PM ET · 0h before departure
Odds over time
Arrive at BUF more than 15 minutes late?
100%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
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How late will it get to BUF?
LIVE
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On time or early
0%
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15–30 min late
<1%
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30 min–1 hour late
48%
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1–2 hours late
52%
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Over 2 hours late
0%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%; while it’s in the air they come from the FAA’s arrival estimate.