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

We've found the cheapest flights to Seattle

Returns from £62.70

One-way from £29.46

You have a choice of 14 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
KLM343444305:4017:30VIEW FLIGHTS
Delta Connection333333305:4017:30VIEW FLIGHTS
Virgin Atlantic233333205:4017:30VIEW FLIGHTS
Korean Air232333205:4017:30VIEW FLIGHTS
Hawaiian Airlines322331306:0019:17VIEW FLIGHTS
Alaska Airlines322331306:0019:17VIEW FLIGHTS
Qatar Airways222221206:0011:33VIEW FLIGHTS
WestJet111111111:4211:42VIEW FLIGHTS
Japan Airlines111111106:0006:00VIEW FLIGHTS
Air France012111017:3017:30VIEW FLIGHTS
LATAM Airlines011111017:3017:30VIEW FLIGHTS
ITA Airways011111017:3017:30VIEW FLIGHTS
Volaris100110110:1210:12VIEW FLIGHTS
Frontier100110110:1210:12VIEW FLIGHTS

The greatest amount of direct flights offered from Ontario International to Seattle-Tacoma International United States are by KLM with around 25 flights a week. The earliest flight is available at 05:40 and the latest flights at 17:30 with the most popular flight number being KL5455, KL6208, KL6919 and KL7595.

klm.com is available for information regarding booking flights etc with KLM.

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
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:12
AirlineFlightNo
VolarisY42593
FrontierF93164
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
KLMKL6208
Delta ConnectionDL4031
19:17
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6107
VIEW FLIGHTS
Tuesday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
Korean AirKE7360
Air FranceAF2133
KLMKL5455
KLMKL6208
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
VIEW FLIGHTS
Wednesday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE7360
Air FranceAF2133
Air FranceAF8521
KLMKL5455
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
VIEW FLIGHTS
Thursday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:12
AirlineFlightNo
VolarisY42593
FrontierF93164
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
Korean AirKE7360
Air FranceAF8521
KLMKL5455
KLMKL6208
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
19:17
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6107
VIEW FLIGHTS
Friday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:12
AirlineFlightNo
VolarisY42593
FrontierF93164
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
Korean AirKE7360
Air FranceAF2133
KLMKL5455
KLMKL6208
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
19:17
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6107
VIEW FLIGHTS
Saturday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
Korean AirKE7360
Air FranceAF2133
KLMKL5455
KLMKL6208
ITA AirwaysAZ3408
LATAM AirlinesLA6297
Delta ConnectionDL4031
Virgin AtlanticVS4636
VIEW FLIGHTS
Sunday
05:40
AirlineFlightNo
Korean AirKE3098
KLMKL6919
Delta ConnectionDL4042
Virgin AtlanticVS3853
06:00
AirlineFlightNo
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
Japan AirlinesJL6389
Qatar AirwaysQR2987
10:12
AirlineFlightNo
VolarisY42593
FrontierF93164
11:33
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
11:42
AirlineFlightNo
WestJetWS7732
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
17:30
AirlineFlightNo
Korean AirKE3070
KLMKL6208
Delta ConnectionDL4031
19:17
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6107
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

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.

Don't forget to book your hire car!

Search for a cheap rental car at SEA

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 £29.46 ($39 €34.39)
£29.46
$39 | €34.39
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 £62.70 ($83 €73.18)
£62.70
$83 | €73.18
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.

Other Airports Connecting To Seattle Airport in united states

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