Ground stop at YYZ (YYZ), Nov 13, 2026

EndedGround stop at YYZ lifted after one hour seven minutes

Started: Fri, Nov 13, 10:09 PM UTC22:09 UTC
Ended: Fri, Nov 13, 11:16 PM UTC23:16 UTC
Duration: 1 hr 7 min
Cause: other; Extended 1 time

Ended: final numbers are being collected; this page becomes permanent shortly.

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What happened

AI-written · may contain mistakes. Written from the advisory text and weather only.

Cause: Air traffic control stopped departures to YYZ for reasons listed only as "other," with no specific cause given in the advisory.

A ground stop at YYZ began at 22:09 UTC on November 13, 2026, holding departures from 23 air traffic control centers. At 22:22 UTC it was extended to 6:15 pm EST and a new advisory was issued, which listed 776 total delays. The ground stop ended at 23:16 UTC, after 1 hour 7 minutes.

Impact by airline

No airline data was collected for this ground stop.

Airline numbers appear after the first sample, within about 20 minutes of the start.

Impact by region

Air traffic control centers whose departures to the airport were held.

Center	Status
ZAN	Held
ZLA	Held
ZAU	Held
ZLC	Held
ZTL	Held
ZDC	Held
ZHN	Held
ZNY	Held
ZHU	Held
ZJX	Held
ZFW	Held
ZOB	Held
ZDV	Held
ZOA	Held
ZSE	Held
ZBW	Held
ZMA	Held
ZKC	Held
ZME	Held
ZID	Held
ZAB	Held
ZMP	Held
ZSU	Held

Timeline

Every change published while the ground stop was in effect, as seen each minute.

Nov 13, 10:09 PM UTC
Ground stop issued at YYZ for other, until 6:00 pm EST. Departures held from ZAN, ZLA, ZAU, ZLC and 19 more.
Nov 13, 10:22 PM UTC
Extended until 6:15 pm EST.
Nov 13, 10:22 PM UTC
New advisory issued.
Read the advisory ↗
Nov 13, 11:16 PM UTC
Ground stop ended after 1 hr 7 min.

Advisories

The air traffic control advisories issued for this ground stop, as published.

Advisory 6011

CTL ELEMENT: CYYZ
ELEMENT TYPE: APT
ADL TIME: 2219Z
GROUND STOP PERIOD: 13/2208Z - 13/2315Z
DEP FACILITIES INCLUDED: (Manual) ZAN ZLA ZAU ZLC ZTL ZDC ZHN ZNY ZHU
 ZJX ZFW ZOB ZDV ZOA ZSE ZBW ZMA ZKC ZME ZID ZAB ZMP ZSU
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 512 / 61 / 23
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 776 / 76 / 35
PROBABILITY OF EXTENSION: HIGH
IMPACTING CONDITION: OTHER / OTHER
COMMENTS:

Original advisory ↗

Advisory 6010

CTL ELEMENT: CYYZ
ELEMENT TYPE: APT
ADL TIME: 2204Z
GROUND STOP PERIOD: 13/2154Z - 13/2300Z
DEP FACILITIES INCLUDED:  ALL
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 0 / 0 / 0
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1407 / 62 / 32
PROBABILITY OF EXTENSION: HIGH
IMPACTING CONDITION: OTHER / OTHER
COMMENTS:

Original advisory ↗

How it is measured

Status, timeline, cause and held centers: the national airspace status feed, checked every minute, and the air traffic control advisories it links to.
Delays by airline and region: departures and arrivals at YYZ 30 or more minutes late, by their estimated delay against the schedule, sampled every 10 minutes while the stop is active and once more after it ends.
Totals and cancellations: arrival and departure boards for YYZ, every 30 minutes while active and once more after the end. Delayed means 15 or more minutes late at YYZ; cancelled is the airline's cancelled status; codeshares count once. Flights scheduled from the start until an hour after the end are counted.
Held at origin: the same arrivals boards, which carry each flight's scheduled and actual departure from its origin. A flight is held when it is still scheduled, not departed, 15 or more minutes past its scheduled departure at a sample taken during the stop. In scope: its origin is in a held center or listed facility; flights from elsewhere are late for other reasons.
Inbound in the air: the same arrivals boards. At each board taken during the stop, a flight to YYZ is in the air when it has departed (en route, or with an actual departure time) and not landed, cancelled or diverted; one still shown in the air over an hour past its arrival estimate, or departed more than 18 hours earlier, is treated as stale and left out.
Diversions: an inbound flight marked diverted during the stop or the wrap-up after it (not one marked before it could have departed), or one still shown in the air 30+ minutes past its arrival estimate that ADS-B (by its ICAO call sign) then found on the ground at another airport, not its origin. The diversion airport is the airport ADS-B found it at, else the updated destination. Cancellations never count. Regional flights flown under another call sign can't be found on ADS-B, so their diversion airport may be unknown.
Aircraft on the ground and holding: ADS-B positions around YYZ, every 5 minutes; the airline is read from the call sign. Holding counts airline flights only (passenger, regional and cargo), not private, military or medical flights.
Weather: METARs, SIGMETs and weather alerts.
News: headline links filtered to this airport and these days; we show titles and links only.

Data sources are listed on the credits page.