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What flights are delayed or canceled at Ontario Airport today?
Every delayed or canceled flight at Ontario Airport (ONT) is listed above, departures and arrivals combined across every airline. Flights running on schedule don't appear, and the list refreshes every one to two hours. Southwest and Delta anchor a fast-growing passenger operation at Ontario alongside heavy overnight cargo traffic, and Inland Empire summer heat restrictions are a common cause of delays here.
No US law requires airlines to pay cash for a domestic weather delay, but a canceled flight still guarantees you a refund under DOT rules if you don't want to be rebooked. Should any part of your itinerary have departed the EU or UK, or landed there on an EU or UK airline, you could be owed up to $650 under EU261 or UK261 for that segment. Click "Check payout" next to your flight above to check.
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