Flights from Ontario Airport ONT to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £66.66

One-way from £21.97

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Volaris, Frontier, Korean Air, KLM, Japan Airlines, WestJet, Virgin Atlantic, Delta Connection, Qatar Airways, 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 Airlines455244405:0019:21VIEW FLIGHTS
Hawaiian Airlines455243405:0019:21VIEW FLIGHTS
Qatar Airways344232305:0019:21VIEW FLIGHTS
Delta Connection333113306:4517:49VIEW FLIGHTS
Virgin Atlantic222112206:4511:48VIEW FLIGHTS
WestJet121112206:4511:48VIEW FLIGHTS
Korean Air111111106:4506:45VIEW FLIGHTS
KLM111111106:4506:45VIEW FLIGHTS
Japan Airlines111111106:0006:00VIEW FLIGHTS
Volaris111011118:0118:01VIEW FLIGHTS
Frontier111011118:0118:01VIEW FLIGHTS

Alaska Airlines offer the highest number of flights for this route with departures times between 05:00 and 19:21.

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
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:46
AirlineFlight  No
Delta ConnectionDL4096
Virgin AtlanticVS4052
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL4031
18:01
AirlineFlight  No
VolarisY42343
FrontierF92275
19:21
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR2181
VIEW FLIGHTS
Tuesday
05:00
AirlineFlight  No
Alaska AirlinesAS1477
Hawaiian AirlinesHA4866
Qatar AirwaysQR2084
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:46
AirlineFlight  No
WestJetWS5450
Delta ConnectionDL4096
Virgin AtlanticVS4052
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL4031
18:01
AirlineFlight  No
VolarisY42343
FrontierF92275
19:21
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR2181
VIEW FLIGHTS
Wednesday
05:00
AirlineFlight  No
Alaska AirlinesAS1477
Hawaiian AirlinesHA4866
Qatar AirwaysQR2084
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:46
AirlineFlight  No
WestJetWS5450
Delta ConnectionDL4096
Virgin AtlanticVS4052
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL4031
18:01
AirlineFlight  No
VolarisY42343
FrontierF92275
19:21
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR2181
VIEW FLIGHTS
Thursday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
VIEW FLIGHTS
Friday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
18:01
AirlineFlight  No
VolarisY42353
FrontierF92275
19:21
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR2181
VIEW FLIGHTS
Saturday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:00
AirlineFlight  No
Alaska AirlinesAS9803
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:48
AirlineFlight  No
WestJetWS6508
Delta ConnectionDL4096
Virgin AtlanticVS4052
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL4031
18:01
AirlineFlight  No
VolarisY42353
FrontierF92275
VIEW FLIGHTS
Sunday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Japan AirlinesJL6389
Qatar AirwaysQR2182
06:45
AirlineFlight  No
Korean AirKE3098
WestJetWS8280
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:49
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:48
AirlineFlight  No
WestJetWS6508
Delta ConnectionDL4096
Virgin AtlanticVS4052
16:48
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL4031
18:01
AirlineFlight  No
VolarisY42353
FrontierF92275
19:21
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR2181
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 £21.97 ($29 €24.97)
£21.97
$29 | €24.97
Check Latest Price
DIRECT Frontier 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 £66.66 ($88 €75.78)
£66.66
$88 | €75.78
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 £63.63 ($84 €72.33)
£63.63
$84 | €72.33
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): Alaska Airlines, Delta Connection, Frontier, Hawaiian Airlines, Japan Airlines, 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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