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

We've found the cheapest flights to Seattle

Returns from £65.21

One-way from £37.79

You have a choice of 13 airline companies when flying from Ontario International to Seattle-Tacoma International. The distance covered when flying from Ontario International to Seattle-Tacoma International United States is 1,540 Km (957 Miles) with the travel time being around 2 Hours 37 Minutes. ONT is the Airport code for Ontario International and SEA is for Seattle-Tacoma International United States.

Ticket prices are normally at a premium at weekends and can vary also with the time of day. It is normally worth booking flights well in advance if possible to get the best deal to Seattle-Tacoma International United States perhaps midweek or late evening. Flights to Seattle-Tacoma International United States normally go up in price the nearer the travel date, so it would be advisable to book as early as possible.

The table below shows the amount of daily flights in operation from Ontario International (ONT) to Seattle-Tacoma International (SEA).

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
WestJet455654306:0019:05VIEW FLIGHTS
Delta Connection444444406:0019:05VIEW FLIGHTS
Hawaiian Airlines444443406:0019:20VIEW FLIGHTS
Alaska Airlines444443406:0019:20VIEW FLIGHTS
Virgin Atlantic333333306:0014:55VIEW FLIGHTS
KLM333333306:0019:05VIEW FLIGHTS
Qatar Airways222233306:0011:51VIEW FLIGHTS
Korean Air222222206:0019:05VIEW FLIGHTS
SAS022222206:0011:44VIEW FLIGHTS
Japan Airlines111111006:0006:00VIEW FLIGHTS
Volaris100111110:0316:29VIEW FLIGHTS
Frontier100111110:0316:29VIEW FLIGHTS
Jet Linx Aviation000001106:0006:00VIEW FLIGHTS

The greatest amount of direct flights offered from Ontario International to Seattle-Tacoma International United States are by WestJet with around 32 flights a week. The earliest flight is available at 06:00 and the latest flights at 19:05 with the most popular flight number being WS5513, WS6909, WS6910 and WS7849.

westjet.com is available for information regarding booking flights etc with WestJet.

Please see below the times of flights. These times and frequency may vary at different times of the year please visit the website for more information.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
06:00
AirlineFlightNo
Korean AirKE3098
WestJetWS7849
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlightNo
WestJetWS6910
WestJetWS7882
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:29
AirlineFlightNo
VolarisY42593
FrontierF93164
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Tuesday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlightNo
SASSK3675
WestJetWS5513
WestJetWS6910
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7956
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Wednesday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlightNo
SASSK3675
WestJetWS5513
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7956
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Thursday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS7902
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:05
AirlineFlightNo
VolarisY42593
FrontierF93164
11:44
AirlineFlightNo
SASSK3675
WestJetWS5513
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Friday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:03
AirlineFlightNo
VolarisY42593
FrontierF93164
11:44
AirlineFlightNo
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS8642
WestJetWS8694
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Saturday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Qatar AirwaysQR2987
Jet Linx AviationJL6389
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:42
AirlineFlightNo
Japan AirlinesJL6389
10:03
AirlineFlightNo
VolarisY42593
FrontierF93164
11:44
AirlineFlightNo
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7956
WestJetWS8694
KLMKL6208
Delta ConnectionDL4031
VIEW FLIGHTS
Sunday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Qatar AirwaysQR2987
Jet Linx AviationJL6389
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:03
AirlineFlightNo
VolarisY42593
FrontierF93164
11:44
AirlineFlightNo
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlightNo
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlightNo
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7956
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlightNo
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS

You may instead fly from Ontario International and arrive at Seattle-Tacoma International by an alternative airport or airports. The summary of this is in the table below.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Burbank to Seattle01,510 km (938 miles)2 Hours 35 Minutes
Las Vegas to Seattle01,395 km (867 miles)2 Hours 27 Minutes
Los Angeles to Seattle01,537 km (955 miles)2 Hours 37 Minutes
Palm Springs Municipal to Seattle01,590 km (988 miles)2 Hours 41 Minutes
San Diego to Seattle01,692 km (1,051 miles)2 Hours 48 Minutes
Santa Barbara Municipal to Seattle01,463 km (909 miles)2 Hours 32 Minutes
San Bernardino Norton Afb to Seattle01,544 km (960 miles)2 Hours 38 Minutes
Santa Ana John Wayne to Seattle01,576 km (979 miles)2 Hours 40 Minutes
Palm Springs Bermuda Dunes to Seattle01,607 km (998 miles)2 Hours 42 Minutes
Los Angeles Van Nuys to Seattle01,506 km (936 miles)2 Hours 35 Minutes

If you require a hire car at Seattle-Tacoma International be sure that you are in possession of a valid driving licence and also a current credit card.

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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 £37.79 ($51 €45.02)
£37.79
$51 | €45.02
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 £65.21 ($88 €77.68)
£65.21
$88 | €77.68
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, Jet Linx Aviation, KLM, Korean Air, Qatar Airways, SAS, 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.

Other Airports Connecting To Seattle Airport in united states

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Useful Information about Seattle Airport

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