Schedule: FAA flight plans.
SOUTHWEST · FLIGHT WN 1538
IN THE AIR (OFF 10:52 AM CT, ETA 2:06 PM ET)
Today
WN 1538 · STL → BOS
took off 10:52 AM CT · expected to land 2:06 PM ET (scheduled 10:24 AM CT → 2:20 PM ET)
Forecast issued Wed 12:00 PM ET · 1h after departure
Odds over time
Arrive at BOS more than 15 minutes late?
2%
chance · ±0 pts
+1 pt · 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 BOS?
LIVE
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On time or early
98%
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15–30 min late
2%
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30 min–1 hour late
<1%
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1–2 hours late
0%
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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.