Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
REPUBLIC · FLIGHT YX 4379
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
YX 4379 · LGA → BUF
departs 10:29 AM ET · arrives 12:02 PM ET
Forecast issued Thu 10:00 PM ET · 60h before departure
Watch this flight
Other days
Today 22%
Sat 10/3 7%
Sun 10/4
Mon 10/5 11%
Tue 10/6 8%
Wed 10/7 12%
Odds over time
Arrive at BUF more than 15 minutes late?
8%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BUF more than 15 minutes late?
Calm-weather odds: 5% · changed – in 24h
–
8%
Yes 8%
No 92%
Leave LGA more than 15 minutes late?
Calm-weather odds: 5% · changed – in 24h
–
6%
Yes 6%
No 94%
Arrive at BUF more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to BUF?
On time or early
91%
15–30 min late
3%
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
↑
LGA is prone to delays
↓
YX's recent on-time record
↓
Sundays in October are usually quieter than average
Weather at each end
LGA (origin)
Gusts 14 kt Ceiling 1,700 ft Visibility 10+ mi Precip 0.03 in
BUF (destination)
Gusts 14 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.