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Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.

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Passenger events at your flight's airports

Enter a flight: you see events at its departure and arrival airports, including tight aircraft turns there. Your own flight’s inbound aircraft is on its flight page.

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Departures: events affecting flights leaving the airport. Arrivals: flights going to it.

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“Today” and dates above start at midnight in this zone. Each item shows its airport’s local time; hover a time for UTC.

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Type: Cancellation ×Airport: ORD × Clear filters
CST, Nov 15 4 h ago
Forecast Significant New Cancellation ORD departures

Model expects about 7 cancellations among O'Hare departures 9 PM–midnight Sunday

Adding up each flight’s cancellation probability, Tailodds’ model expects about 7 of the 134 departures scheduled 9 PM–midnight Sunday to be cancelled (5%). With calm weather it would expect about 1. From the 9:00 AM CST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~7 cancellationsHorizon 11.0 hModel famA-fc-v3+famB-sd-v4i

Source: Tailodds forecast Timeline (1) View ORD
CST, Nov 15 6 h ago
Forecast Significant New Cancellation ORD departures

Model expects about 14 cancellations among O'Hare departures 6–9 PM Sunday

Adding up each flight’s cancellation probability, Tailodds’ model expects about 14 of the 226 departures scheduled 6–9 PM Sunday to be cancelled (6%). With calm weather it would expect about 1. From the 7:00 AM CST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~14 cancellationsHorizon 9.6 hModel famA-fc-v3+famB-sd-v4i

Source: Tailodds forecast Timeline (1) View ORD
CST, Nov 15 6 h ago
Forecast Significant Resolved De-escalation Cancellation ORD departures

Model lowers expected cancellations to about 18 among O'Hare departures 9 AM–noon Sunday

What changed: about 24 → 18 expected cancellations since the 6:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 18 of the 240 departures scheduled 9 AM–noon Sunday to be cancelled (7%). With calm weather it would expect about 2. From the 7:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~18 cancellationsHorizon 0.6 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View ORD
CST, Nov 15 7 h ago
Forecast Significant Developing De-escalation Cancellation ORD departures

Updated model now expects about 17 among O'Hare departures 3–6 PM Sunday

What changed: about 86 → 17 expected cancellations since the 5:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 17 of the 225 departures scheduled 3–6 PM Sunday to be cancelled (7%). With calm weather it would expect about 1. From the 6:00 AM CST forecast (model famB-sd-v4i). The model changed since the previous item (from famA-fc-v3+famB-sd-v4i), so some or all of this change comes from the new model rather than new information. This is a forecast, not a report of cancellations.

Expected ~17 cancellationsHorizon 7.6 hModel famB-sd-v4iModel changed

Source: Tailodds forecast Timeline (2) 1 earlier matching update View ORD
CST, Nov 15 7 h ago
Forecast Significant Resolved De-escalation Cancellation ORD departures

Model lowers expected cancellations to about 21 among O'Hare departures noon–3 PM Sunday

What changed: about 89 → 21 expected cancellations since the 5:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 21 of the 227 departures scheduled noon–3 PM Sunday to be cancelled (9%). With calm weather it would expect about 1. From the 6:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~21 cancellationsHorizon 4.6 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (3) 2 earlier matching updates View ORD
CST, Nov 15 8 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 99 among O'Hare departures 6–9 AM Sunday

What changed: about 14 → 99 expected cancellations since the 4:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 99 of the 240 departures scheduled 6–9 AM Sunday to be cancelled (41%). With calm weather it would expect about 2. From the 5:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~99 cancellationsHorizon 0.1 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View ORD
CST, Nov 14 19 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 27 among O'Hare departures 9 PM–midnight Saturday

What changed: about 14 → 27 expected cancellations since the 5:00 PM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 27 of the 130 departures scheduled 9 PM–midnight Saturday to be cancelled (21%). With calm weather it would expect about 1. From the 6:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~28 cancellationsHorizon 1.6 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View ORD
CST, Nov 14 20 h ago
Forecast Major Resolved De-escalation Cancellation ORD departures

Model lowers expected cancellations to about 23 among O'Hare departures 6–9 PM Saturday

What changed: about 44 → 23 expected cancellations since the 3:00 PM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 23 of the 226 departures scheduled 6–9 PM Saturday to be cancelled (10%). With calm weather it would expect about 2. From the 5:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~24 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View ORD
CST, Nov 14 25 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 38 among O'Hare departures 3–6 PM Saturday

What changed: about 29 → 38 expected cancellations since the 8:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 38 of the 223 departures scheduled 3–6 PM Saturday to be cancelled (17%). With calm weather it would expect about 2. From the 12:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~38 cancellationsHorizon 2.1 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (5) 4 earlier matching updates View ORD
CST, Nov 14 26 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 46 among O'Hare departures noon–3 PM Saturday

What changed: about 38 → 46 expected cancellations since the 10:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 46 of the 220 departures scheduled noon–3 PM Saturday to be cancelled (21%). With calm weather it would expect about 2. From the 11:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~46 cancellationsHorizon 0.1 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (7) 6 earlier matching updates View ORD
CST, Nov 14 29 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 52 among O'Hare departures 9 AM–noon Saturday

What changed: about 25 → 52 expected cancellations since the 7:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 52 of the 236 departures scheduled 9 AM–noon Saturday to be cancelled (22%). With calm weather it would expect about 2. From the 8:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~52 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (9) 8 earlier matching updates View ORD
CST, Nov 14 33 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 102 among O'Hare departures 6–9 AM Saturday

What changed: about 25 → 102 expected cancellations since the 3:00 AM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 102 of the 234 departures scheduled 6–9 AM Saturday to be cancelled (44%). With calm weather it would expect about 2. From the 4:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~102 cancellationsHorizon 1.1 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (5) 4 earlier matching updates View ORD
CST, Nov 13 41 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 50 among O'Hare departures 9 PM–midnight Friday

What changed: about 43 → 50 expected cancellations since the 6:00 PM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 50 of the 138 departures scheduled 9 PM–midnight Friday to be cancelled (36%). With calm weather it would expect about 1. From the 8:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~50 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (4) 3 earlier matching updates View ORD
CST, Nov 13 44 h ago
Forecast Major Resolved Escalation Cancellation ORD departures

Model raises expected cancellations to about 59 among O'Hare departures 6–9 PM Friday

What changed: about 40 → 59 expected cancellations since the 4:00 PM CST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 59 of the 233 departures scheduled 6–9 PM Friday to be cancelled (25%). With calm weather it would expect about 2. From the 5:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~59 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (3) 2 earlier matching updates View ORD

Each item is the latest update matching your filters; the event’s current status is on its chip. All updates shows the full chronological wire.

Confirmed
An official source (the FAA) reports it. We attribute it; we don’t independently verify it.
Observed
We measured it from FAA flight data: window, sample size and the typical level are on the item.
Forecast
Our model predicts it, with its probability, target, horizon and model version. It has not happened. How accurate is it?

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