ONT Ontario International Airport
live · 3h ago
Ontario CaliforniaOntario International Airport08:50·14°C·#65/327
OPSMINOR DELAYS WEATHERVFR
+12 min

Ontario California (ONT) airport average arrival delay right now

Departures +9 min, arrivals +12 min. This airport's board does not publish cancellations.

Hour by hour
08:00today +12 min on time

Drag. Solid bars are observed. Hatched bars are expected.

Ontario California (ONT) delays today: 73% of the 22 flights we have timed operated within 15 minutes of schedule. Departures are running +9 min and arrivals +12 min, across 47 flights tracked so far today. Source: official airport boards, METAR weather, Pro Flight Search tracking. Updated 28 October 2026 at 13:18 UTC.

Departures13 timed
On time69%9
Delayed31%4
typical now +9 min
On the boardDeparturesfull board ↗
09:15WN 2475PHX on time
09:25UA 432SFO on time
09:41AA 4171PHX on time
09:45DL 1416SLC on time
10:15WN 2751OAK on time

When this board posts +15, the median flight leaves +24. Posted vs. actual across every hub: the slippage study →

Arrivalsfull board ↗
07:20 08:50PCM 8730BFL +90 min
08:55DL 1416SLC on time
09:05PCM 8704SBA on time
09:10AA 4171PHX on time
09:30PCM 8683IYK on time
09:35AA 1820DFW on time
Running late right now1 of 18 still on the board · 5.6%
+90
PCM 8730 from BFL · arr 08:50
Across our network, flights this late still cancel only 3.0% of the time.
In the air to ONTlive positions · 3-min feed
7aircraft inbound · next to land DL 1416 from SLC, lands ~08:56
DL 1416SLC
lands ~08:56
WN 775OAK
lands ~09:15
AA 1820DFW
lands ~09:36
WN 2537PHX
lands ~09:43

Positions as of 08:45 local · updates every 3 min. Tap any flight to watch it on its own page.

Airlines by median delay todaymedian · min 3 legs
8CATI+22m
Why3 kt ENE winds, Few clouds. Conditions like these carry no delay penalty at ONT in our weather × delay record.
Weather window Forecast (TAF) 🌤 staying clear No significant weather in the TAF window. Made up in the air Network figure ~27 min Network-wide median for delayed flights in our tracked sample.

Tomorrow at Ontario California

Forecast

Thu 29 Oct, local date

High22°Clikely 20°C to 25°C
Low14°Clikely 13°C to 16°C
Outlook: about usual
Chance a departure leaves 60+ min late
7.2%usually 6.3%

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Based on about 92 departures a day. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Last 30 days

Today is the 21st worst day of the last 30. Median day: +13 min departures.

Typical week here
+14
MON
+12
TUE
+12
WED
+17
THU
+15
FRI
+12
SAT
+13
SUN

Last 90 days: lightest on Tuesday (+12 min), heaviest on Thursday (+17 min).

Watch this airportfree · no account

One message when ONT crosses your line, one when it clears. Nothing else, ever.

Tell me when delays go

From forecast@proflightsearch.com · one-tap unwatch in every message.

Sample · what you getONT went yellow · departures now +34 min and building · 19:40 local. Weather clears after 03:00. → proflightsearch.com/airport-delays/ontario-ONT

Ontario California airport delays today

ONT has minor delays. A typical arrival is currently +12 min. Departures are +9 min. The calmest upcoming departure hour looks like 19:00 (+3 min expected).

Other Los Angeles airports: LAX BUR SNA LGB · Nearby gateways: SNA LGB BUR LAX PSP SAN · Global delay board · Nonstop routes from Ontario California

Is Ontario California (ONT) delayed right now?

ONT has minor delays. Departures +9 min, arrivals +12 min. This airport's board does not publish cancellations. 73% of the 22 flights we timed here today operated within 15 minutes of schedule.

What is the current weather at Ontario California (ONT)?

Winds ENE-060 at 3kt, Vis 10sm, Temp 14°C, Dew 11°C, Alt 29.97 inHg, Few clouds at 1200ft, Few clouds at 30000ft. 14°C. wind 3 kt. visibility >10 km. flight rules VFR.

What is the best day to fly from Ontario California (ONT)?

Over the last 90 days, Tuesday averaged the lightest departure delays (+12 min). Thursday ran heaviest (+17 min).

How often are flights delayed at ONT today?

We tracked 47 flights today: departures +9 min, arrivals +12 min.

What is the TAF forecast for ONT?

The next TAF period (VFR) forecasts: Winds Variable at 4kt, Vis greater than 6sm, Scattered clouds at 25000ft.

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Suggested citation

Pro Flight Search: Ontario California (ONT) live delay and board tracking, measured from official airport boards.

Canonical URL
https://proflightsearch.com/airport-delays/ontario-ONT
How we measure this →
Technical · METAR, flight rules & indexes
VFRRight now visual (VFR), but the forecast (TAF) below dips to marginal visual ahead: small spacing adjustments are possible.
Wind60° 3 kt
Visibility>10 km
Temp / dew14 / 11 °C
Pressure1015 hPa
KONT 281453Z 06003KT 10SM FEW012 FEW300 14/11 A2997 RMK AO2 SLP141 T01440106 53003
05:00 to 14:00VFRWinds Variable at 4kt, Vis greater than 6sm, Scattered clouds at 25000ft
14:00 to 21:00VFRWinds WSW-250 at 9kt, Vis greater than 6sm, Scattered clouds at 20000ft
21:00 to 11:00VFRWinds Variable at 5kt, Vis greater than 6sm, Scattered clouds at 1500ft, Scattered clouds at 20000ft
03:00 to 07:00TEMPOMVFRBroken layer at 1500ft
METAR 07:53 local · 58m ago · delay window 06:18 local · How these are computed → methodology