Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
REPUBLIC · FLIGHT YX 4538
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
YX 4538 · JFK → DCA
departs 6:30 AM ET · arrives 7:59 AM ET
Forecast issued Thu 7:00 PM ET · 36h before departure
Watch this flight
Other days
Today 9%
Fri 10/2 11%
Sat 10/3
Sun 10/4 8%
Mon 10/5 8%
Tue 10/6 7%
Wed 10/7 7%
Odds over time
Arrive at DCA more than 15 minutes late?
7%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
7%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.4d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DCA more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Leave JFK more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Arrive at DCA more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to DCA?
On time or early
92%
15–30 min late
2%
30 min–1 hour late
3%
1–2 hours late
<1%
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
↑
JFK is prone to delays
↑
Mostly benign weather forecast at DCA
↓
Early flights usually leave on time
↓
YX's recent on-time record
Weather at each end
JFK (origin)
Gusts 14 kt
Ceiling 6,667 ft
Visibility 10+ mi
Precip none
DCA (destination)
Gusts 14 kt
Ceiling 2,500 ft
Visibility 10+ mi
Precip 0.19 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.