Apparatus

Try JFK, AAL1290, BAW, or N225AN.

route Route

SEA → ONT

374 km avg 1h 54m 1 airline

Departure

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
04:09 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
60° / 10 kt
Visibility
10 SM
Ceiling
BKN 2,200 ft, OVC 4,000 ft
Temp / Dew
5°C / 2°C
Altimeter
29.79 inHg
Wx
-RA

Obs: 2026-04-15T10:53:00.000Z

Raw METAR / TAF 
METAR KSEA 151053Z 06010KT 10SM -RA BKN022 OVC040 05/02 A2979 RMK AO2 SLP095 P0003 T00500022

TAF KSEA 151017Z 1510/1612 05014G22KT P6SM VCSH FEW010 BKN025 OVC035 FM151600 21007KT P6SM VCSH SCT025 BKN035 FM151900 22010G18KT P6SM -SHRA SCT030 BKN040 PROB30 1521/1524 5SM -TSRA BKN040CB FM160000 23009KT P6SM -RA SCT025 BKN035 FM160200 03006KT P6SM -RA SCT025 BKN035

flight Live Traffic

flight_takeoff 130 Departures
flight_land 141 Arrivals

Arrival

ONT KONT VFR

Ontario International Airport

Ontario, US

Local time
04:09 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
944 ft
Coordinates
34.0560, -117.6010

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
13°C / 8°C
Altimeter
30.01 inHg

Obs: 2026-04-15T10:53:00.000Z

Raw METAR / TAF 
METAR KONT 151053Z 00000KT 10SM CLR 13/08 A3001 RMK AO2 SLP155 T01280083 $

TAF KONT 150520Z 1506/1612 VRB04KT P6SM SKC FM152100 25010KT P6SM SCT250 FM160500 VRB04KT P6SM BKN250

flight Live Traffic

flight_takeoff 45 Departures
flight_land 27 Arrivals
Flights tracked
10
Avg duration
1h 54m
Distance
374 km

Live traffic

SEA → ONT. Live aircraft currently filed on this route.

Airlines 1

Airline Flights shown
Alaska Airlines 9

Other connections

More destinations from SEA

More origins to ONT

Recent flights last 10

DateFlightAircraftTakeoffLandingDurationArr Δ
2026-04-14 ASA119 A2919A Apr 14, 09:10 UTCApr 14, 09:50 UTC40m -
2026-04-14 ASA119 A2919A Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m -
2026-04-14 ASA119 A2919A Apr 14, 06:35 UTCApr 14, 07:10 UTC35m -
2026-04-13 ASA120 A6B435 Apr 13, 23:11 UTCApr 14, 02:32 UTC3h 21m +6m
2026-04-13 ASA119 A7F286 Apr 13, 08:25 UTCApr 13, 09:35 UTC1h 10m -
2026-04-13 ASA119 A7F286 Apr 13, 07:55 UTCApr 13, 09:35 UTC1h 40m -
2026-04-13 ASA119 A7F286 Apr 13, 06:20 UTCApr 13, 09:26 UTC3h 6m +6m
2026-04-13 ASA489 A613E0 Apr 13, 04:52 UTCApr 13, 06:59 UTC2h 7m +5m
2026-04-13 ASA120 A69F49 Apr 13, 00:20 UTCApr 13, 02:20 UTC2h 0m -
2026-04-12 ASA120 A69F49 Apr 12, 23:55 UTCApr 13, 02:20 UTC2h 25m -

SEA → ONT frequently asked

How long is the flight from SEA to ONT?
Average flight time on the SEA–ONT route is 1h 54m, covering approximately 374 km (232 mi).
What is the distance from SEA to ONT?
The great-circle distance from SEA to ONT is approximately 374 km (232 miles).
Which airlines fly from SEA to ONT?
1 airline operates this route in our records: Alaska Airlines.
How many flights per week from SEA to ONT?
We've observed ~3 flights per day on this route across our tracking data (10 total flights recorded).
Can I track SEA–ONT flights live?
Yes. The live tracker map above shows aircraft currently flying this route, filtered by departure and arrival airport.