Are there delays at Ontario International (ONT) today?

ONT has an on-time departure rate of 81%. When delays occur, they average 64 minutes. About 0.9% of flights are cancelled. The most common reason for departure delays here is the incoming plane arriving late.

What are TSA wait times at ONT?

TSA wait at ONT is about 10-16 minutes. Fastest time: 4 AM (about 5 min). Busiest: 6 AM (24-30 minutes).

What causes delays at ONT?

The most common reason for departure delays here is the incoming plane arriving late.

How long of a connection do I need at ONT?

ONT is fairly reliable — 60 minutes is usually fine for domestic, 90 minutes for international.

Heads up at ONT. Avg delay is 64 min when late.

Give yourself extra time. 81% on-time rate, TSA is about 10-16 minutes.

Updated 2:07 PM UTC

ONT Ontario Delays & Airport Status

Ontario International

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Delay Stats

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81% on timeAvg delay 64 min

Security Lines

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~13 minBest: 4 AM (about 5 min)

Flying out of ONT? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

ONT departure performance by month

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Airlines at ONT

On-time departure rate from DOT data

SkyWest Airlines87%

Delta Air Lines87%

Alaska Airlines84%

Southwest Airlines81%

United Airlines80%

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ONT → PHX ONT → DEN ONT → LAS ONT → SEA ONT → DFW ONT → SMF ONT → OAK ONT → SFO ONT → SJC ONT → SLC