Is there a ground stop at Ontario (ONT) right now?

No. As of Oct 15, 04:29 UTC there is no ground stop at ONT. This page updates every minute.

How often does ONT have ground stops?

GroundStop.app has not recorded a ground stop at ONT in the last 90 days, while 791 were recorded at 66 other airports nationwide.

What causes ground stops at ONT?

Common causes are thunderstorms, low ceilings and visibility, strong winds, high traffic volume, equipment outages and runway closures.

Which air traffic control center handles ONT?

ONT is in the airspace of Los Angeles Center (ZLA), one of the US Air Route Traffic Control Centers.

Is weather affecting ONT right now?

There is a High Wind Warning in effect for the ONT area. Current conditions are VFR (wind 250° 4 kt · vis 10+ mi · no ceiling).

Which airports are near Ontario (ONT)?

The closest airports with pages on GroundStop.app are Santa Ana/John Wayne (SNA, 30 mi), Long Beach (LGB, 36 mi), Burbank Hollywood (BUR, 44 mi) and Los Angeles (LAX, 47 mi). In the last 90 days SNA had 2 ground stops, BUR had 1 ground stop, LAX had 4 ground stops, VNY had 1 ground stop.

What is the difference between a ground stop and a ground delay program?

A ground stop halts departures to an airport entirely until it is lifted. A ground delay program lets flights depart but assigns them later departure times to meter arrivals.

Ontario (ONT) delays and ground stop status

Ontario, CA · in Los Angeles Center (ZLA) airspace

Listen to ATC

There is no ground stop at ONT as of Oct 15, 04:29 UTC.

Ontario (ONT, ICAO KONT) serves Ontario, CA and sits in Los Angeles Center (ZLA) airspace. Local time there is Wed, 11:40 PM PDT. GroundStop.app has not recorded a ground stop at ONT in the last 90 days, while 791 ground stops were recorded at 66 other airports nationwide, which puts ONT among the quieter airports. Nearby, SNA had 2, BUR had 1 and LAX had 4.

No ground stop at ONT right now

No ground stops, delay programs or reported delays. Updated Oct 15, 04:29 UTC.

Weather nowVFRWind 250° 4 kt · Vis 10+ mi · No ceiling

Delay outlook · 12 hMedium

High winds until 8:00 PM PDT could cause some delays at Ontario International Airport.

High Wind Warning in effect until 8:00 PM PDT

Check your flight

Enter your flight number to see its EDCT, the ground stop or delay program at its destination, and its status.

Airport map

Runways, taxiways, terminals and gates at Ontario, with aircraft on the ground and arriving or departing. Click a plane for its flight.

Delays now

Delay data unavailable right now.

Departures and arrivals

Flights at ONT from an hour ago to the next several hours, local time. Late means 15+ minutes behind schedule.

Board unavailable right now.

Refreshed every few minutes. Times are scheduled, with estimated or actual times below when they differ.

Weather at ONT

Current conditions and weather alerts

VFRgood conditions

Wind 250° 4 kt · Vis 10+ mi · No ceiling

METAR KONT 150353Z 25004KT 10SM CLR 21/03 A3006 RMK AO2 SLP169 T02060033 $

Observed Oct 15, 03:53 UTC (KONT)

High Wind Warning
High Wind Warning issued October 14 at 6:39PM PDT until October 17 at 8:00PM PDT by NWS San Diego CA

Full forecast at weather.gov

Weather briefing

Strong winds expected Thursday with a high wind warning

Delays likely

Now: Clear skies with a light breeze from the west-southwest at about 5 mph.

Later: Tonight stays clear and calm. Thursday from 8 AM to 4 PM, winds rise to 12 mph with gusts to 23 mph, then from 4 to 5 PM winds reach 23 mph with gusts to 35 mph.

High wind warning in effect until Saturday, 8 PM
Gusts up to 35 mph Thursday afternoon could cause delays
Skies stay clear through the period

AI-written · may contain mistakes. Written from the latest METAR, TAF and weather alerts. Not for flight planning.

Forecast for ONT

Model forecast in local time (PDT). For official aviation forecasts, see the TAF.

Next 24 hours

Now74°40%
10 PM73°20%
11 PM72°10%
12 AM71°00%
1 AM71°10%
2 AM70°10%
3 AM69°2G100%
4 AM69°30%
5 AM68°4G130%
6 AM68°40%
7 AM68°40%
8 AM70°5G150%
9 AM78°10G230%
10 AM82°15G230%
11 AM84°17G220%
12 PM86°18G230%
1 PM87°19G240%
2 PM87°19G250%
3 PM87°19G270%
4 PM87°18G250%
5 PM85°19G270%
6 PM83°18G301%
7 PM82°18G320%
8 PM81°15G290%

Wind in knots (arrow shows where it blows) · chance of rain or snow

TodaySunny · wind to 7 kt63° / 82°
ThuSunny · wind to 19 kt68° / 87°
FriSunny · wind to 18 kt74° / 91°

Sunrise 6:54 AM Sunset 6:17 PM

TAF summary

Terminal forecast for ONT, valid 15/0000Z to 16/0600Z (UTC)

15/0000Z–0400Z
27009KT · 6+ mi · SKC
VFR
15/0400Z–1500Z · From
03005KT · 6+ mi · SKC
VFR
15/1500Z–0100Z · From
04012G22KT · 6+ mi · SKC
VFR
16/0100Z–0600Z · From
05023G34KT · 6+ mi · SKC
VFR

Decoded table and raw TAF

ONT history, forecast and airspace

Ground stops at ONT

Recorded by GroundStop.app, last 90 days

Last 30 days: 0
Last 90 days: 0
Average length: —
Longest: —

Forecast for ONT (TAF)

Issued 14/2342Z · valid 15/0000Z to 16/0600Z · times are UTC (Z)

When	Change	Category	Wind	Visibility	Clouds	Weather
15/0000Z–0400Z	Base	VFR	27009KT	6+ mi	SKC	—
15/0400Z–1500Z	From	VFR	03005KT	6+ mi	SKC	—
15/1500Z–0100Z	From	VFR	04012G22KT	6+ mi	SKC	—
16/0100Z–0600Z	From	VFR	05023G34KT	6+ mi	SKC	—

TAF KONT 142342Z 1500/1606 27009KT P6SM SKC FM150400 03005KT P6SM SKC FM151500 04012G22KT P6SM SKC FM160100 05023G34KT P6SM SKC

White outline: Los Angeles Center. Open the live map

Other airports in Los Angeles Center

BURBurbank Hollywood LASLas Vegas Harry Reid LAXLos Angeles LGBLong Beach PSPPalm Springs SANSan Diego SBASanta Barbara SNASanta Ana/John Wayne VNYVan Nuys

About Ontario

ONT at a glance

IATA / FAA code: ONT
ICAO code: KONT
Location: Ontario, CA, United States
Coordinates: 34.0560° N, 117.6012° W
Time zone: America/Los_Angeles · now Wed, 11:40 PM PDT
ATC center (ARTCC): Los Angeles Center (ZLA)
Ground stops, last 90 days: 0

Airports near ONT

Straight-line distance from ONT

SNA Santa Ana/John Wayne
Santa Ana, CA · live ground stop status · 2 ground stops in 90 days
30 mi
49 km
LGB Long Beach
Long Beach, CA · live ground stop status · 0 ground stops in 90 days
36 mi
57 km
BUR Burbank Hollywood
Burbank, CA · live ground stop status · 1 ground stop in 90 days
44 mi
72 km
LAX Los Angeles
Los Angeles, CA · live ground stop status · 4 ground stops in 90 days
47 mi
76 km
VNY Van Nuys
Van Nuys, CA · live ground stop status · 1 ground stop in 90 days
52 mi
84 km
PSP Palm Springs
Palm Springs, CA · live ground stop status · 0 ground stops in 90 days
65 mi
104 km

ONT ground stop FAQ

Is there a ground stop at Ontario (ONT) right now?: No. As of Oct 15, 04:29 UTC there is no ground stop at ONT. This page updates every minute.
How often does ONT have ground stops?: GroundStop.app has not recorded a ground stop at ONT in the last 90 days, while 791 were recorded at 66 other airports nationwide.
What causes ground stops at ONT?: Common causes are thunderstorms, low ceilings and visibility, strong winds, high traffic volume, equipment outages and runway closures.
Which air traffic control center handles ONT?: ONT is in the airspace of Los Angeles Center (ZLA), one of the US Air Route Traffic Control Centers.
Is weather affecting ONT right now?: There is a High Wind Warning in effect for the ONT area. Current conditions are VFR (wind 250° 4 kt · vis 10+ mi · no ceiling).
Which airports are near Ontario (ONT)?: The closest airports with pages on GroundStop.app are Santa Ana/John Wayne (SNA, 30 mi), Long Beach (LGB, 36 mi), Burbank Hollywood (BUR, 44 mi) and Los Angeles (LAX, 47 mi). In the last 90 days SNA had 2 ground stops, BUR had 1 ground stop, LAX had 4 ground stops, VNY had 1 ground stop.
What is the difference between a ground stop and a ground delay program?: A ground stop halts departures to an airport entirely until it is lifted. A ground delay program lets flights depart but assigns them later departure times to meter arrivals.

New to this? What is a ground stop? · Ground stop vs. ground delay program