UA3431United Airlines · IAD → YYZ
updated 4h ago
Route confirmed United Airlines

UA3431 WashingtonIAD TorontoYYZ

UA3431 by United Airlines flies from Washington (IAD) to Toronto (YYZ).

Right nowNext departure today Operates daily
10:24

scheduled from IAD

The route today

live boards
IADWashingtonOn-time likelyIAD delay board →
YYZTorontoOn-time likelyYYZ delay board →
IAD→YYZevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
38%Chance of 15+ min delay
5.2%Chance of cancellation
+14 minTypical airport delay in this weather

Driven mainly by YYZ (Toronto), currently flying IFR (instrument). These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Washington

Forecast

Fri 13 Nov, local date

High10°Clikely 8°C to 12°C
Low4°Clikely 2°C to 7°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at YYZ

Forecast

Fri 13 Nov, local date

High5°Clikely 4°C to 7°C
Low1°Clikely −1°C to 2°C
  • 21% chance of snow

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Washington to Toronto flights today

same route · United Airlines
UA3490departs 12:39
UA3453departs 17:15
UA3515departs 22:10

If UA3431 is cancelled, these are the other United Airlines nonstop flights from Washington to Toronto on the same day, with scheduled departure times in IAD local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA3431 actually runs

Pro Flight Search has tracked every published board update for UA3431 across the IAD and YYZ boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at IAD and YYZ.

The verdict above is that record speaking, so it reflects how UA3431 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3431? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA3431 Washington to Toronto on-time performance, measured from the IAD and YYZ airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3431
How we measure this →