Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
REPUBLIC · FLIGHT YX 4721
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29 Tomorrow
YX 4721 · BOS → JFK
departs 5:29 PM ET · arrives 6:53 PM ET
Forecast issued Wed 2:00 PM ET · 28h before departure
Watch this flight
Other days
Today 16%
Thu 10/29
Fri 10/30 24%
Sat 10/31 38%
Sun 11/1 44%
Mon 11/2 26%
Tue 11/3 24%
Odds over time
Arrive at JFK more than 15 minutes late?
23%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
23%
Leave 15+ late
20%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
6.7d
2d
Now
12h
6h
Departs
Lands
Arrive at JFK more than 15 minutes late?
Calm-weather odds: 17% · changed −1 pt in 24h
−1 pt
23%
Yes 23%
No 77%
Leave BOS more than 15 minutes late?
Calm-weather odds: 14% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Arrive at JFK more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to JFK?
On time or early
77%
15–30 min late
11%
30 min–1 hour late
6%
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
↑
5pm departures from BOS are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into JFK at that hour are often late
↓
Mostly benign weather forecast at BOS
↓
Mostly benign weather forecast at JFK
Weather at each end
BOS (origin)
Gusts 20 kt Ceiling none (clear) Visibility 10+ mi Precip none
JFK (destination)
Gusts 15 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.