Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 2647 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Today

UA 2647 · SFO → BOS

departs 8:10 AM PT · arrives 5:04 PM ET

Forecast issued Fri 3:00 AM ET · 8h before departure

Arrive at BOS more than 15 minutes late?

36% chance · ±0 pts +18 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to BOS?

On time or early
59%
15–30 min late
17%
30 min–1 hour late
3%
1–2 hours late
9%
Over 2 hours late
4%
Cancelled
7%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Arrivals into BOS at that hour are often late

↑ Mostly benign weather forecast at BOS

↑ Cloud base down to 100 ft, visibility down to 0.5 mi forecast at SFO that day

↓ Other factors

↓ Early flights usually leave on time

Weather at each end

SFO (origin) Gusts8 kt Ceiling100 ft Visibility2 mi Precipnone

BOS (destination) Gusts21 kt Ceiling4,500 ft Visibility10+ mi Precip0.08 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.

UA 2647 · SFO → BOS

Odds over time

How late will it get to BOS?