Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1121
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
WN 1121 · MHT → BWI
departs 11:30 AM ET · arrives 1:10 PM ET
Forecast issued Sat 12:00 AM ET · 60h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 6%
Odds over time
Arrive at BWI more than 15 minutes late?
6%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
11%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
6.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 4% · changed – in 24h
–
6%
Yes 6%
No 94%
Leave MHT more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
11%
Yes 11%
No 89%
Arrive at BWI more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
94%
15–30 min late
<1%
30 min–1 hour late
3%
1–2 hours late
1%
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
↓
BWI usually runs smoothly
↓
11am departures from MHT are usually not late
Weather at each end
MHT (origin)
Gusts 24 kt Ceiling 300 ft Visibility 0.5 mi Precip none
BWI (destination)
Gusts 19 kt Ceiling 200 ft 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.