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Flights from Ontario International Airport (ONT) to Seattle–Tacoma International Airport (SEA)

About 52 flights a week. First departure around 11:52, last around 19:59.

Operates Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.

On sampled departures, 43.2% left 15 minutes late or more (125 flights, average lateness 35.1 minutes).

Schedule by day of the week

Day Flights First departure Last departure
Monday 8 11:52 19:59
Tuesday 8 11:52 19:59
Wednesday 8 11:52 19:59
Thursday 7 11:52 19:59
Friday 6 11:52 19:59
Saturday 7 11:52 19:32
Sunday 8 11:52 19:59

Airlines

Airline Flights per week
Alaska Airlines (AS) 33
Delta Air Lines (DL) 19

ONT departure delays · SEA departure delays

Every flight on this route, as JSON

About 52 flights a week are on this schedule. GET /routes returns each ONT–SEA flight: airline, departure time, duration and the days it operates.

https://www.goflightlabs.com/routes?access_key=YOUR_ACCESS_KEY&dep_iata=ONT&arr_iata=SEA

Example response

Field names match the live API. This flight only shows the shape. It is not a live result.

{ "success": true, "data": [ { "airline_iata": "AA", "flight_iata": "AA100", "flight_number": "100", "dep_iata": "ONT", "arr_iata": "SEA", "dep_time": "08:00", "days": [ "mon", "tue", "wed", "thu", "fri" ] } ] }

That URL still says YOUR_ACCESS_KEY. A 7-day trial replaces it with a real key and returns each ONT–SEA flight in the JSON above. After the trial, Starter is $24.99/mo.

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