Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1139
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 1139 · BZN → SAN
departs 1:50 PM MT · arrives 3:30 PM PT
Forecast issued Thu 10:00 PM ET · 6h after departure
Watch this flight
Other days
Thu 10/1
Today 37%
Mon 10/5 23%
Fri 10/9 32%
Odds over time
Arrive at SAN more than 15 minutes late?
30%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
30%
Leave 15+ late
32%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 30% · changed +2 pts in 24h
+2 pts
30%
Yes 30%
No 70%
Leave BZN more than 15 minutes late?
Calm-weather odds: 32% · changed +1 pt in 24h
+1 pt
32%
Yes 32%
No 68%
Arrive at SAN more than an hour late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAN?
On time or early
70%
15–30 min late
16%
30 min–1 hour late
9%
1–2 hours late
3%
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
↑
SAN is prone to delays
↑
Arrivals into SAN at that hour are often late
↑
This flight has been late 22% of the time recently
↓
Mostly benign weather forecast at BZN
↓
BZN usually runs smoothly
Weather at each end
BZN (origin)
Gusts 9 kt Ceiling 7,000 ft Visibility 10+ mi Precip none
SAN (destination)
Gusts 19 kt Ceiling 500 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.