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

We've found the cheapest flights to Seattle

Returns from £92.33

One-way from £70.39

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Volaris, Frontier, Jet Linx Aviation, Icelandair, KLM, Air France, Virgin Atlantic, WestJet, Qatar Airways, Korean Air, Delta Connection 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 Airlines023443406:0022:00VIEW FLIGHTS
Delta Connection023332307:0020:57VIEW FLIGHTS
Korean Air013323307:0020:57VIEW FLIGHTS
Qatar Airways012332306:0022:00VIEW FLIGHTS
WestJet002223307:0020:57VIEW FLIGHTS
Virgin Atlantic012221207:0014:56VIEW FLIGHTS
KLM002212207:0017:56VIEW FLIGHTS
Air France012221107:0014:56VIEW FLIGHTS
Jet Linx Aviation001111106:0008:51VIEW FLIGHTS
Icelandair001111106:0008:51VIEW FLIGHTS
Volaris000110117:0620:08VIEW FLIGHTS
Frontier000110117:0620:08VIEW FLIGHTS

Alaska Airlines offer the highest number of flights for this route with departures times between 06:00 and 22:00.

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
Tuesday
11:57
AirlineFlight  No
Air FranceAF9017
Delta ConnectionDL4070
Virgin AtlanticVS5467
12:02
AirlineFlight  No
Alaska AirlinesAS575
16:09
AirlineFlight  No
Alaska AirlinesAS571
Qatar AirwaysQR3361
17:56
AirlineFlight  No
Korean AirKE7670
20:57
AirlineFlight  No
Delta ConnectionDL4031
VIEW FLIGHTS
Wednesday
06:00
AirlineFlight  No
Alaska AirlinesAS607
Qatar AirwaysQR2126
Jet Linx AviationJL6388
07:00
AirlineFlight  No
Korean AirKE3098
Air FranceAF9016
KLMKL5584
Delta ConnectionDL3816
08:51
AirlineFlight  No
IcelandairFI7707
10:01
AirlineFlight  No
WestJetWS7042
Virgin AtlanticVS3853
11:57
AirlineFlight  No
Air FranceAF9017
Virgin AtlanticVS5467
12:02
AirlineFlight  No
Alaska AirlinesAS575
14:56
AirlineFlight  No
Delta ConnectionDL4070
16:09
AirlineFlight  No
Alaska AirlinesAS571
Qatar AirwaysQR3361
17:56
AirlineFlight  No
Korean AirKE7670
KLMKL6526
20:57
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
Delta ConnectionDL4031
VIEW FLIGHTS
Thursday
06:00
AirlineFlight  No
IcelandairFI7707
Qatar AirwaysQR2126
07:00
AirlineFlight  No
Air FranceAF9016
KLMKL5584
Virgin AtlanticVS3853
08:51
AirlineFlight  No
Alaska AirlinesAS607
Jet Linx AviationJL6388
10:01
AirlineFlight  No
Korean AirKE3098
WestJetWS7042
Delta ConnectionDL3816
12:02
AirlineFlight  No
Alaska AirlinesAS575
14:56
AirlineFlight  No
Air FranceAF9017
Delta ConnectionDL4070
Virgin AtlanticVS5467
16:09
AirlineFlight  No
Qatar AirwaysQR3361
17:56
AirlineFlight  No
Korean AirKE3070
Korean AirKE7670
WestJetWS8373
KLMKL6526
18:56
AirlineFlight  No
Alaska AirlinesAS571
19:13
AirlineFlight  No
Alaska AirlinesAS594
20:08
AirlineFlight  No
VolarisY42358
FrontierF92275
20:57
AirlineFlight  No
Delta ConnectionDL4031
22:00
AirlineFlight  No
Qatar AirwaysQR3355
VIEW FLIGHTS
Friday
06:00
AirlineFlight  No
IcelandairFI7707
Jet Linx AviationJL6388
07:00
AirlineFlight  No
Korean AirKE3098
WestJetWS7523
Air FranceAF9016
KLMKL5584
Virgin AtlanticVS3853
08:51
AirlineFlight  No
Alaska AirlinesAS607
Qatar AirwaysQR2126
10:01
AirlineFlight  No
WestJetWS7042
Delta ConnectionDL3816
11:57
AirlineFlight  No
Air FranceAF9017
Delta ConnectionDL4070
Virgin AtlanticVS5467
12:02
AirlineFlight  No
Alaska AirlinesAS575
17:06
AirlineFlight  No
FrontierF92275
17:56
AirlineFlight  No
Delta ConnectionDL4031
18:56
AirlineFlight  No
Alaska AirlinesAS571
Qatar AirwaysQR3361
19:13
AirlineFlight  No
Alaska AirlinesAS594
Qatar AirwaysQR3355
20:08
AirlineFlight  No
VolarisY42358
20:57
AirlineFlight  No
Korean AirKE7670
VIEW FLIGHTS
Saturday
06:00
AirlineFlight  No
Qatar AirwaysQR2126
Jet Linx AviationJL6388
07:00
AirlineFlight  No
Korean AirKE3098
WestJetWS7042
Air FranceAF9016
08:51
AirlineFlight  No
Alaska AirlinesAS607
IcelandairFI7707
10:01
AirlineFlight  No
WestJetWS7523
KLMKL5584
Delta ConnectionDL3816
Virgin AtlanticVS3853
12:02
AirlineFlight  No
Alaska AirlinesAS575
16:09
AirlineFlight  No
Alaska AirlinesAS571
Qatar AirwaysQR3361
17:56
AirlineFlight  No
Korean AirKE3070
Korean AirKE7670
KLMKL6526
20:57
AirlineFlight  No
WestJetWS8373
Delta ConnectionDL4031
VIEW FLIGHTS
Sunday
06:00
AirlineFlight  No
IcelandairFI7707
Qatar AirwaysQR2126
Jet Linx AviationJL6388
07:00
AirlineFlight  No
Korean AirKE3098
WestJetWS7042
WestJetWS7523
Air FranceAF9016
KLMKL5584
Virgin AtlanticVS3853
08:51
AirlineFlight  No
Alaska AirlinesAS607
10:01
AirlineFlight  No
Delta ConnectionDL3816
11:57
AirlineFlight  No
Delta ConnectionDL4070
Virgin AtlanticVS5467
14:49
AirlineFlight  No
Alaska AirlinesAS575
16:09
AirlineFlight  No
Qatar AirwaysQR3361
17:06
AirlineFlight  No
VolarisY42358
FrontierF92275
17:56
AirlineFlight  No
Korean AirKE3070
Korean AirKE7670
WestJetWS8373
KLMKL6526
Delta ConnectionDL4031
18:56
AirlineFlight  No
Alaska AirlinesAS571
19:13
AirlineFlight  No
Qatar AirwaysQR3355
22:00
AirlineFlight  No
Alaska AirlinesAS594
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
Long Beach to Seattle02 Hours 38 Minutes
Palm Springs Municipal to Seattle02 Hours 41 Minutes
San Diego to Seattle02 Hours 48 Minutes
Santa Barbara Municipal to Seattle02 Hours 32 Minutes
San Bernardino Norton Afb to Seattle02 Hours 38 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.

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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 £70.39 ($93 €84.36)
£70.39
$93 | €84.36
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 £92.33 ($122 €110.67)
£92.33
$122 | €110.67
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 France, Alaska Airlines, Delta Connection, Frontier, Icelandair, 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.

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