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

We've found the cheapest flights to Seattle

Returns from £82.42

One-way from £21.53

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Volaris, Frontier, Korean Air, KLM, Jet Linx Aviation, WestJet, Virgin Atlantic, 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. The flight from Ontario International to Seattle-Tacoma International is approximately 1,540 Kilometers which is 957 Miles. You should expect a flight time of around 2 Hours 37 Minutes.

The cost of flights varies on the time and day you fly. To obtain the best prices for Seattle-Tacoma International flights than book well in advance. The ticket prices for most airliners will increase the closer you get the departure date, so as soon as you know the date you will travel you should book your flights.

For a full summary of all the airliners that fly from Ontario International to Seattle-Tacoma International, please see the table below.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines443344406:0019:19VIEW FLIGHTS
Hawaiian Airlines443343406:0019:19VIEW FLIGHTS
Delta Connection332233306:3817:49VIEW FLIGHTS
Qatar Airways332232306:0019:19VIEW FLIGHTS
Virgin Atlantic222222206:3814:50VIEW FLIGHTS
WestJet110122206:3811:42VIEW FLIGHTS
Korean Air111111106:3806:38VIEW FLIGHTS
KLM111111106:3806:38VIEW FLIGHTS
Jet Linx Aviation111111106:0006:00VIEW FLIGHTS
Volaris110011114:2714:45VIEW FLIGHTS
Frontier110011114:2714:45VIEW FLIGHTS

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

If you wish to book your flight with Alaska Airlines then we advise you book direct from their website at alaskaair.com. The best discounts can only be obtained from their website.

The flight time for the selected route vary based on the month you will travel, but below we has summarised the most common times they will fly. We recommend you only take these times as guidance and check with appropriate airline for the exact times for the date you depart.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:42
AirlineFlight  No
Delta ConnectionDL4070
Virgin AtlanticVS5467
14:45
AirlineFlight  No
VolarisY42380
FrontierF92275
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL3834
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
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:42
AirlineFlight  No
Delta ConnectionDL4070
Virgin AtlanticVS5467
14:45
AirlineFlight  No
VolarisY42380
FrontierF92275
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL3834
19:19
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR3345
VIEW FLIGHTS
Wednesday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
14:50
AirlineFlight  No
Delta ConnectionDL4070
Virgin AtlanticVS5467
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
VIEW FLIGHTS
Thursday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
14:50
AirlineFlight  No
Delta ConnectionDL4070
Virgin AtlanticVS5467
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
VIEW FLIGHTS
Friday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:42
AirlineFlight  No
WestJetWS8396
Delta ConnectionDL4070
Virgin AtlanticVS5467
14:45
AirlineFlight  No
VolarisY42380
FrontierF92275
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL3834
19:19
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR3345
VIEW FLIGHTS
Saturday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:00
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:42
AirlineFlight  No
WestJetWS8396
Delta ConnectionDL4070
Virgin AtlanticVS5467
15:50
AirlineFlight  No
VolarisY42380
FrontierF92275
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL3834
19:32
AirlineFlight  No
Alaska AirlinesAS753
VIEW FLIGHTS
Sunday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Hawaiian AirlinesHA6361
Qatar AirwaysQR2182
Jet Linx AviationJL6389
06:38
AirlineFlight  No
Korean AirKE3098
WestJetWS6921
KLMKL5663
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:44
AirlineFlight  No
Alaska AirlinesAS654
Hawaiian AirlinesHA6371
Qatar AirwaysQR2186
11:42
AirlineFlight  No
WestJetWS8396
Delta ConnectionDL4070
Virgin AtlanticVS5467
14:27
AirlineFlight  No
VolarisY42380
FrontierF92275
16:36
AirlineFlight  No
Alaska AirlinesAS665
Hawaiian AirlinesHA6372
17:49
AirlineFlight  No
Delta ConnectionDL3834
19:19
AirlineFlight  No
Alaska AirlinesAS594
Hawaiian AirlinesHA6358
Qatar AirwaysQR3345
VIEW FLIGHTS

If you are flexible on the airport you depart from, then there are other airports that offer direct flights to Seattle-Tacoma International. You can see full details of these below.

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

Over the past 10 years flight regulations have become very strict so we advise you to leave plenty of time to check in and get through customs.

Looking for the best deals on car rental?

Search for the cheapest vehicle rental deals in Ontario

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 £21.53 ($29 €24.72)
£21.53
$29 | €24.72
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 £82.42 ($111 €94.63)
£82.42
$111 | €94.63
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 £73.51 ($99 €84.40)
£73.51
$99 | €84.40
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

Was your flight delayed or cancelled?

Was your flight delayed or cancelled?

You may be eligible to receive up to 600 EUR compensation per person in your party.

Claim Now!

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, 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 International Airport

Looking for the best deals on rental cars?

Search for the cheapest vehicle rental deals in Ontario, United States

Useful Information about Ontario International Airport

Ontario International Airport Lounges

See all the airport lounges, locations and opening times available at Ontario International Airport

View...
Dining and Bars at Ontario International Airport

See all bars and restaurants at Ontario International Airport, including locations and if they are before or after check-in

View...
Shops and Duty Free at Ontario International Airport

See all shops available at Ontario International Airport - plan your duty free shopping in advance

View...
Los Angeles Tourist Attractions

Things too see and do in and around Los Angeles City, California in the United States of America.

View...