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

We've found the cheapest flights to Seattle

Returns from £45.12

One-way from £22.95

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Volaris, LATAM Airlines, ITA Airways, Frontier, Air France, Japan Airlines, WestJet, Korean Air, KLM, Delta Connection, Virgin Atlantic, Qatar Airways, Alaska Airlines and Hawaiian 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
Hawaiian Airlines744666806:0020:59VIEW FLIGHTS
Alaska Airlines533543506:0020:59VIEW FLIGHTS
Virgin Atlantic233343305:4017:25VIEW FLIGHTS
Qatar Airways422333406:0020:59VIEW FLIGHTS
Delta Connection333332305:4017:25VIEW FLIGHTS
Korean Air232332105:4017:25VIEW FLIGHTS
KLM232332105:4017:25VIEW FLIGHTS
WestJet322220111:1811:18VIEW FLIGHTS
Japan Airlines111111106:0006:00VIEW FLIGHTS
Air France012111017:2517:25VIEW FLIGHTS
Volaris100111107:5810:59VIEW FLIGHTS
LATAM Airlines011111017:2517:25VIEW FLIGHTS
ITA Airways011111017:2517:25VIEW FLIGHTS
Frontier100111107:5810:59VIEW FLIGHTS

Hawaiian Airlines offer the highest number of flights for this route with departures times between 06:00 and 20:59.

If you wish to book your flight with Hawaiian Airlines then we advise you book direct from their website at hawaiianair.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
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:00
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
10:59
AirlineFlight  No
VolarisY42413
FrontierF93164
11:18
AirlineFlight  No
WestJetWS6897
WestJetWS6998
WestJetWS8152
Delta ConnectionDL4070
Virgin AtlanticVS5381
14:19
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6212
17:25
AirlineFlight  No
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
18:30
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6137
Hawaiian AirlinesHA6169
Qatar AirwaysQR2009
20:59
AirlineFlight  No
Alaska AirlinesAS1007
Hawaiian AirlinesHA6174
Qatar AirwaysQR8852
VIEW FLIGHTS
Tuesday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:18
AirlineFlight  No
WestJetWS6897
WestJetWS6998
Delta ConnectionDL4070
Virgin AtlanticVS5381
11:29
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
16:15
AirlineFlight  No
Alaska AirlinesAS1099
Hawaiian AirlinesHA4816
17:25
AirlineFlight  No
Korean AirKE3070
Korean AirKE7360
Air FranceAF2133
KLMKL5455
KLMKL6284
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
VIEW FLIGHTS
Wednesday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:18
AirlineFlight  No
WestJetWS6441
WestJetWS6897
Delta ConnectionDL4070
Virgin AtlanticVS5381
11:29
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
16:15
AirlineFlight  No
Alaska AirlinesAS1099
Hawaiian AirlinesHA4816
17:25
AirlineFlight  No
Korean AirKE7360
Air FranceAF2133
Air FranceAF8521
KLMKL5455
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
VIEW FLIGHTS
Thursday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Japan AirlinesJL6389
Qatar AirwaysQR2987
07:58
AirlineFlight  No
VolarisY42413
FrontierF93164
10:00
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
11:18
AirlineFlight  No
WestJetWS6441
WestJetWS6897
Delta ConnectionDL4070
Virgin AtlanticVS5381
14:19
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6212
17:25
AirlineFlight  No
Korean AirKE3070
Korean AirKE7360
Air FranceAF8521
KLMKL5455
KLMKL6284
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
18:30
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6137
20:59
AirlineFlight  No
Alaska AirlinesAS1007
Hawaiian AirlinesHA6174
Qatar AirwaysQR8852
VIEW FLIGHTS
Friday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Hawaiian AirlinesHA6191
Japan AirlinesJL6389
Qatar AirwaysQR2987
09:59
AirlineFlight  No
VolarisY42413
FrontierF93164
10:00
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
11:18
AirlineFlight  No
WestJetWS6441
WestJetWS6897
Delta ConnectionDL4070
Virgin AtlanticVS5381
14:19
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6212
17:25
AirlineFlight  No
Korean AirKE3070
Korean AirKE7360
Air FranceAF2133
KLMKL5455
KLMKL6284
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4052
Virgin AtlanticVS4636
20:59
AirlineFlight  No
Alaska AirlinesAS1007
Hawaiian AirlinesHA6174
Qatar AirwaysQR8852
VIEW FLIGHTS
Saturday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Hawaiian AirlinesHA6191
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:29
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
12:38
AirlineFlight  No
VolarisY42413
FrontierF93164
14:00
AirlineFlight  No
Korean AirKE7360
Air FranceAF2133
KLMKL5455
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4052
Virgin AtlanticVS4636
18:30
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6159
Hawaiian AirlinesHA6169
Qatar AirwaysQR2009
VIEW FLIGHTS
Sunday
05:40
AirlineFlight  No
Korean AirKE3098
KLMKL6979
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlight  No
Alaska AirlinesAS1091
Hawaiian AirlinesHA6185
Hawaiian AirlinesHA6191
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:00
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6186
Hawaiian AirlinesHA6206
Qatar AirwaysQR2044
10:59
AirlineFlight  No
VolarisY42413
FrontierF93164
11:18
AirlineFlight  No
WestJetWS6734
Delta ConnectionDL4070
Virgin AtlanticVS5381
14:19
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6212
17:25
AirlineFlight  No
Delta ConnectionDL4031
Virgin AtlanticVS4052
19:27
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6159
Hawaiian AirlinesHA6169
Qatar AirwaysQR2009
20:59
AirlineFlight  No
Alaska AirlinesAS1007
Hawaiian AirlinesHA6174
Qatar AirwaysQR8852
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
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 £22.95 ($29 €27.46)
£22.95
$29 | €27.46
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 £45.12 ($57 €53.97)
£45.12
$57 | €53.97
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, Hawaiian Airlines, ITA Airways, Japan Airlines, KLM, Korean Air, LATAM Airlines, 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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