ALTO — Gate Optimization for Alaska Airlines at SEA

Scenario

Day

Delay an aircraft

minutes late

Close gates

Alaska rents C, N and D. The S stands are common-use — billed $552.89 every turn they are used, so the optimizer only reaches for them when it must.

Delay cost $98.41 / minute

A4A, 2025: $98.41 default.

Delay propagation 0.75

How much lateness carries to the aircraft's next flight. An assumption, not a published figure.

Solve exactly

Integer program instead of network flow. ~20s instead of ~1s, for 9% less walking. Same gate count — proven on 16 days.

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Cost of the disruption

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Recovered by re-optimizing

Share of the damage recovered

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Aircraft moved to a new gate

Scenario	Delay	Idle gates	Towing	Common use	Total	Gates
Run a scenario to fill this in.

at gate towed off-gate moved to a different gate running late

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