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.
ALLEGIANT · FLIGHT G4 1878
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 1878 · IAD → PGD
departs 6:25 PM ET · arrives 8:57 PM ET
Forecast issued Thu 10:00 PM ET · 4h after departure
Watch this flight
Odds over time
Arrive at PGD more than 15 minutes late?
28%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
28%
Leave 15+ late
35%
Arrive 1h+ late
16%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Now
Arrive at PGD more than 15 minutes late?
Calm-weather odds: 28% · changed −5 pts in 24h
−5 pts
28%
Yes 28%
No 72%
Leave IAD more than 15 minutes late?
Calm-weather odds: 35% · changed +1 pt in 24h
+1 pt
35%
Yes 35%
No 65%
Arrive at PGD more than an hour late?
Calm-weather odds: 16% · changed +3 pts in 24h
+3 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PGD?
On time or early
71%
15–30 min late
6%
30 min–1 hour late
6%
1–2 hours late
8%
Over 2 hours late
7%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
G4's recent on-time record
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 26% of the time recently
↓
Mostly benign weather forecast at IAD
↓
Thursdays in October are usually quieter than average
Weather at each end
IAD (origin)
Gusts 7 kt Ceiling none (clear) Visibility 8 mi Precip none
PGD (destination)
Gusts 31 kt Ceiling 2,300 ft Visibility 10+ mi Precip 0.07 in
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.