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.
SKYWEST · FLIGHT OO 4821
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Today
OO 4821 · GRI → DFW
departs 6:18 PM CT · arrives 8:19 PM CT
Forecast issued Mon 9:00 AM ET · 10h before departure
Watch this flight
Other days
Today
Wed 10/7 11%
Thu 10/8 19%
Fri 10/9 20%
Sat 10/10 20%
Sun 10/11 28%
Odds over time
Arrive at DFW more than 15 minutes late?
33%
chance · ±0 pts
+9 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
39%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
2d
1d
Now
6h
Departs
Lands
Arrive at DFW more than 15 minutes late?
Calm-weather odds: 28% · changed +9 pts in 24h
+9 pts
33%
Yes 33%
No 67%
Leave GRI more than 15 minutes late?
Calm-weather odds: 28% · changed +13 pts in 24h
+13 pts
39%
Yes 39%
No 61%
Arrive at DFW more than an hour late?
Calm-weather odds: 10% · changed +1 pt in 24h
+1 pt
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to DFW?
On time or early
67%
15–30 min late
11%
30 min–1 hour late
12%
1–2 hours late
5%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DFW at that hour are often late
↑
OO's recent on-time record
↑
This flight has been late 25% of the time recently
↓
Mostly benign weather forecast at DFW
↓
Mondays in October are usually quieter than average
Weather at each end
GRI (origin)
Gusts 22 kt Ceiling none (clear) Visibility 9 mi Precip none
DFW (destination)
Gusts 16 kt Ceiling 6,000 ft 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.