Flights from Seattle Airport (SEA) to Ontario Airport Airport (ONT)

We've found the cheapest flights to Ontario

Returns from £53.50

One-way from £22.81

Airliners including Alaska Horizon, Virgin Atlantic, Japan Airlines, Frontier, Korean Air, KLM, Qatar Airways, Delta Connection, Alaska Airlines and Hawaiian Airlines all offer direct flights between Seattle-Tacoma International to Ontario International. When travelling from Seattle-Tacoma International you will cover about 957 miles before you reach Ontario International. This journey will take 2 Hours 37 Minutes.

The exact cost of the flight we vary quite significantly base on the dates you travel, the time of day you will depart and how long in advance you pre book the flights. If you are on a tight budget then you should avoid flying at peak hours as the prices are more expensive. The cheapest flights are in the evenings and in mid week. Flight to Ontario International will get more expensive the nearer you get the departure date, so it’s advisable to book in advance if it is possible.

To see all airliners that offer flights between Seattle-Tacoma International and Ontario International please see the table below.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Hawaiian Airlines555454406:3323:59VIEW FLIGHTS
Alaska Airlines554343306:3321:31VIEW FLIGHTS
Delta Connection333113307:4519:55VIEW FLIGHTS
Qatar Airways332123214:5923:59VIEW FLIGHTS
Korean Air222112214:0022:45VIEW FLIGHTS
KLM222112214:0022:45VIEW FLIGHTS
Japan Airlines111111114:5919:24VIEW FLIGHTS
Frontier111111118:3519:22VIEW FLIGHTS
Virgin Atlantic111001119:5522:45VIEW FLIGHTS
Alaska Horizon000001106:4706:47VIEW FLIGHTS

Hawaiian Airlines is the most popular airliners who operate this route. They have around 32 a week with times that vary between 06:33 and 23:59.

To book your flight you can visit Hawaiian Airlines on their website hawaiianair.com. You will find up to date information on availability and the latest discounts.

Flight times for the route are summarised in the table below. These time were correct at the time of writing, but please be aware that times may vary from time to time so please check their website for exact times and the dates you wish to fly.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
06:33
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6660
07:45
AirlineFlight  No
Delta ConnectionDL4070
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:59
AirlineFlight  No
Alaska AirlinesAS967
Hawaiian AirlinesHA6664
Japan AirlinesJL6388
Qatar AirwaysQR3366
16:54
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Qatar AirwaysQR2105
18:35
AirlineFlight  No
FrontierF93163
19:55
AirlineFlight  No
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:31
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Tuesday
06:33
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6660
07:45
AirlineFlight  No
Delta ConnectionDL4070
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Delta ConnectionDL4031
14:59
AirlineFlight  No
Alaska AirlinesAS967
Hawaiian AirlinesHA6664
Japan AirlinesJL6388
Qatar AirwaysQR3366
16:45
AirlineFlight  No
Korean AirKE3070
KLMKL6284
16:54
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Qatar AirwaysQR2105
19:10
AirlineFlight  No
FrontierF93163
19:55
AirlineFlight  No
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:31
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Wednesday
06:33
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6660
07:45
AirlineFlight  No
Delta ConnectionDL4070
09:05
AirlineFlight  No
Hawaiian AirlinesHA6608
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
16:54
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
18:41
AirlineFlight  No
FrontierF93163
19:55
AirlineFlight  No
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:31
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Thursday
06:33
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6608
09:05
AirlineFlight  No
Hawaiian AirlinesHA6660
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:59
AirlineFlight  No
Alaska AirlinesAS967
Hawaiian AirlinesHA6664
Japan AirlinesJL6388
Qatar AirwaysQR3366
19:10
AirlineFlight  No
FrontierF93163
VIEW FLIGHTS
Friday
06:33
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6660
09:05
AirlineFlight  No
Hawaiian AirlinesHA6608
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
16:54
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
18:35
AirlineFlight  No
FrontierF93163
21:31
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Saturday
07:45
AirlineFlight  No
Delta ConnectionDL4070
10:55
AirlineFlight  No
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
15:12
AirlineFlight  No
Hawaiian AirlinesHA6387
Japan AirlinesJL6388
Qatar AirwaysQR3366
Alaska HorizonAS2227
16:54
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Qatar AirwaysQR2105
19:22
AirlineFlight  No
FrontierF93163
19:55
AirlineFlight  No
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:31
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Sunday
06:47
AirlineFlight  No
Alaska HorizonAS2259
07:45
AirlineFlight  No
Delta ConnectionDL4070
09:19
AirlineFlight  No
Hawaiian AirlinesHA6632
10:55
AirlineFlight  No
Alaska AirlinesAS1097
13:27
AirlineFlight  No
Hawaiian AirlinesHA6667
14:00
AirlineFlight  No
Delta ConnectionDL4031
16:45
AirlineFlight  No
Korean AirKE3070
KLMKL6284
16:54
AirlineFlight  No
Alaska AirlinesAS1086
19:22
AirlineFlight  No
FrontierF93163
19:24
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:55
AirlineFlight  No
Delta ConnectionDL4027
21:31
AirlineFlight  No
Alaska AirlinesAS1040
22:45
AirlineFlight  No
Korean AirKE3106
KLMKL6282
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS

If the airlines stated don’t offer flights that suite your travel times, you could look at alternative options. Below we have summarised flights from alternative departures airports and flights that are not direct.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Seattle Boeing Field King County to Ontario02 Hours 38 Minutes

Please remember to leave plenty of time to get though customers when you are departing form the airports. Flights regulations are getting very strict these days so getting through customs can take in excess of 1 hour in some cases.

Don't forget to book your car rental!

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Flight Price FAQ - Seattle (SEA) to Ontario (ONT)

DIRECT Frontier Airlines
What is the cheapest direct flight one way from Seattle SEA to Ontario ONT?
The cheapest direct flight one way from Seattle SEA to Ontario ONT is £22.81 ($29 €27.56)
£22.81
$29 | €27.56
Check Latest Price
DIRECT Frontier Airlines
What is the cheapest direct return flight from Seattle SEA to Ontario ONT?
The cheapest direct return flight from Seattle SEA to Ontario ONT is £53.50 ($68 €64.63)
£53.50
$68 | €64.63
Check Latest Price
Important Note: Prices shown are taken from searches performed for flights operating during the current month. Please use the "Latest Price" buttons to get the most up to date airfares.

Compare Flight Prices from SEA to ONT

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Flight Info FAQ - Seattle (SEA) to Ontario (ONT)

Who flies from Seattle to Ontario?
The following airlines fly from Seattle (SEA) to Ontario (ONT): Alaska Airlines, Alaska Horizon, Delta Connection, Frontier, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Qatar Airways, Virgin Atlantic.
How far is the flight from Seattle to Ontario?
The flight from Seattle to Ontario is 1,540KM or 957 miles.
How long does the flight from Seattle to Ontario to take?
The flight from Seattle to Ontario takes 2 Hours 37 Minutes.

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