Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3749
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 3749 · SLC → MDW
departs 8:00 AM MT · arrives 12:00 PM CT
Forecast issued Fri 1:00 PM ET · 21h before departure
Watch this flight
Other days
Today 4%
Sat 10/3
Sun 10/4 4%
Mon 10/5 5%
Odds over time
Arrive at MDW more than 15 minutes late?
7%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
7%
Leave 15+ late
5%
Arrive 1h+ late
1%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.5d
2d
Now
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Leave SLC more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Arrive at MDW more than an hour late?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to MDW?
On time or early
92%
15–30 min late
4%
30 min–1 hour late
2%
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
↑
Other factors
↑
MDW is prone to delays
↓
Mostly benign weather forecast at SLC
↓
Early flights usually leave on time
Weather at each end
SLC (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
MDW (destination)
Gusts 8 kt Ceiling none (clear) Visibility 10+ 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.