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 2356 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Today

UA 2356 · SFO → BOS

departs 10:05 AM PT · arrives 6:59 PM ET

Forecast issued Fri 10:00 PM ET · 9h after departure

Arrive at BOS more than 15 minutes late?

41% chance · ±0 pts +0 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to BOS?

On time or early
58%
15–30 min late
14%
30 min–1 hour late
13%
1–2 hours late
11%
Over 2 hours late
3%
Cancelled
<1%

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

What’s moving the odds

↑ Mostly benign weather forecast at BOS

↑ Arrivals into BOS at that hour are often late

↑ 10am departures from SFO are often late

↓ Other factors

↓ UA's recent on-time record

Weather at each end

SFO (origin) Gusts10 kt Ceiling300 ft Visibility3 mi Precipnone

BOS (destination) Gusts28 kt Ceiling5,000 ft Visibility7 mi Precipnone

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 2356 · SFO → BOS

Odds over time

How late will it get to BOS?