Flights from Ontario Airport ONT to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £82.78

One-way from £21.63

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Air Transport International, Japan Airlines, Volaris, Frontier, Jet Linx Aviation, WestJet, Virgin Atlantic, Korean Air, KLM, Qatar Airways, Delta Connection, Hawaiian Airlines and Alaska Airlines. These airliners all offer direct flights that depart from Ontario International, so you will find flying to Seattle-Tacoma International is quite easy. When travelling from Ontario International you will cover about 957 miles before you reach Seattle-Tacoma International. This journey will take 2 Hours 37 Minutes.

The price of the flight is dependent on the time of the day you fly and the day of the week with weekends being normally a higher price. 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. We advise all our viewers to book well in advance. This way you will get the low priced tickets available.

The table below displays the numbers of daily flights from Ontario International (ONT) to Seattle-Tacoma International (SEA) and the relevant airlines that fly.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines442342306:0019:19VIEW FLIGHTS
Hawaiian Airlines442332306:0019:19VIEW FLIGHTS
Qatar Airways331221206:0019:19VIEW FLIGHTS
Delta Connection222222207:3015:30VIEW FLIGHTS
WestJet111111107:3007:30VIEW FLIGHTS
Virgin Atlantic111111107:3007:30VIEW FLIGHTS
Korean Air111111107:3007:30VIEW FLIGHTS
KLM111111107:3007:30VIEW FLIGHTS
Jet Linx Aviation110110106:0006:00VIEW FLIGHTS
Volaris100100114:4517:15VIEW FLIGHTS
Frontier100100114:4517:15VIEW FLIGHTS
Japan Airlines000110008:5408:54VIEW FLIGHTS
Air Transport International100000004:0004:00VIEW FLIGHTS

Alaska Airlines offer the highest number of flights for this route with departures times between 06:00 and 19:19.

You can find the latest flight availability and prices from Alaska Airlines at alaskaair.com. You can also book direct and get their 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
04:00
AirlineFlight  No
Air Transport International8C6730
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
14:45
AirlineFlight  No
VolarisY42380
FrontierF92275
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
19:19
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR3345
VIEW FLIGHTS
Tuesday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
19:19
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR3345
VIEW FLIGHTS
Wednesday
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:53
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:03
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
VIEW FLIGHTS
Thursday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:54
AirlineFlight  No
Japan AirlinesJL6389
11:53
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:03
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:15
AirlineFlight  No
VolarisY42380
FrontierF92275
VIEW FLIGHTS
Friday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:54
AirlineFlight  No
Japan AirlinesJL6389
11:53
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
15:36
AirlineFlight  No
Alaska AirlinesAS9234
16:03
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
VIEW FLIGHTS
Saturday
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:53
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:03
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
VIEW FLIGHTS
Sunday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
07:30
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:53
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
15:30
AirlineFlight  No
Delta ConnectionDL4031
16:03
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:15
AirlineFlight  No
VolarisY42380
FrontierF92275
VIEW FLIGHTS

Instead of flying from Ontario International you could consider a few airports that are close by. Please see that table below of alternative routes.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Burbank to Seattle02 Hours 35 Minutes
Las Vegas to Seattle02 Hours 27 Minutes
Los Angeles to Seattle02 Hours 37 Minutes
Palm Springs Municipal to Seattle02 Hours 41 Minutes
San Diego to Seattle02 Hours 48 Minutes
Santa Barbara Municipal to Seattle02 Hours 32 Minutes
Santa Ana John Wayne to Seattle02 Hours 40 Minutes

Whilst you will find a bureau de change at Seattle-Tacoma International, we recommend you change some money before you depart if you don’t have the local currency. The exchange rates within any airport are not very favorable, so exchanging money before hand is a good idea.

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

DIRECT Frontier Airlines
What is the cheapest direct flight one way from Ontario ONT to Seattle SEA?
The cheapest direct flight one way from Ontario ONT to Seattle SEA is £21.63 ($29 €24.93)
£21.63
$29 | €24.93
Check Latest Price
DIRECT Hawaiian Airlines
What is the cheapest direct return flight from Ontario ONT to Seattle SEA?
The cheapest direct return flight from Ontario ONT to Seattle SEA is £82.78 ($111 €95.40)
£82.78
$111 | €95.40
Check Latest Price
1+ STOP(S)
What is the cheapest return flight from Ontario ONT to Seattle SEA?
The cheapest return flight from Ontario ONT to Seattle SEA is £73.83 ($99 €85.09)
£73.83
$99 | €85.09
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 ONT to SEA

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

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

Alternative Airports in United States with Connections from Ontario Airport

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Useful Information about Ontario Airport

Lounges at Ontario Airport

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