Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 736
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 736 · BOS → BWI
departs 9:40 PM ET · arrives 11:25 PM ET
Forecast issued Sat 3:00 PM ET · 31h before departure
Watch this flight
Other days
Sun 10/4
Mon 10/5 22%
Fri 10/9 24%
Odds over time
Arrive at BWI more than 15 minutes late?
41%
chance · ±5 pts
−7 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
64%
Arrive 1h+ late
19%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.0d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 25% · changed −7 pts in 24h
−7 pts
41%
Yes 41%
No 59%
Leave BOS more than 15 minutes late?
Calm-weather odds: 45% · changed +6 pts in 24h
+6 pts
64%
Yes 64%
No 36%
Arrive at BWI more than an hour late?
Calm-weather odds: 8% · changed −13 pts in 24h
−13 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
58%
15–30 min late
3%
30 min–1 hour late
18%
1–2 hours late
14%
Over 2 hours late
6%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
9pm departures from BOS are often late
↑
Arrivals into BWI at that hour are often late
↓
Other factors
↓
BWI usually runs smoothly
Weather at each end
BOS (origin)
Gusts 15 kt Ceiling 600 ft Visibility 9 mi Precip 0.03 in
BWI (destination)
Gusts 11 kt Ceiling 200 ft Visibility 0.5 mi Precip 0.13 in
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.