Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1827
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
WN 1827 · MHT → BWI
departs 3:55 PM ET · arrives 5:40 PM ET
Forecast issued Tue 9:00 PM ET · 19h before departure
Watch this flight
Other days
Today 11%
Wed 9/30
Odds over time
Arrive at BWI more than 15 minutes late?
11%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
11%
Leave 15+ late
22%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Leave MHT more than 15 minutes late?
Calm-weather odds: 21% · changed +4 pts in 24h
+4 pts
22%
Yes 22%
No 78%
Arrive at BWI more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
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
88%
15–30 min late
5%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
<1%
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
↑
Arrivals into BWI at that hour are often late
↑
WN's recent on-time record
↓
Other factors
↓
Wednesdays in September are usually quieter than average
Weather at each end
MHT (origin)
Gusts 5 kt Ceiling 2,200 ft Visibility 10+ mi Precip none
BWI (destination)
Gusts 10 kt Ceiling 9,533 ft Visibility 4 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.