Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 737
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 737 · BWI → BOS
departs 3:35 PM ET · arrives 5:10 PM ET
Forecast issued Wed 1:00 AM ET · 39h before departure
Watch this flight
Other days
Today 26%
Thu 10/1
Fri 10/2 33%
Mon 10/5 31%
Odds over time
Arrive at BOS more than 15 minutes late?
29%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
29%
Leave 15+ late
38%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 23% · changed +1 pt in 24h
+1 pt
29%
Yes 29%
No 71%
Leave BWI more than 15 minutes late?
Calm-weather odds: 34% · changed +0 pts in 24h
+0 pts
38%
Yes 38%
No 62%
Arrive at BOS more than an hour late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
71%
15–30 min late
11%
30 min–1 hour late
10%
1–2 hours late
6%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
WN's recent on-time record
↑
This flight has been late 33% of the time recently
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at BWI
↓
Visibility down to 1 mi forecast at BOS that day
Weather at each end
BWI (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
BOS (destination)
Gusts 16 kt Ceiling none (clear) Visibility 1 mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.