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

We've found the cheapest flights to Seattle

Returns from £95.50

One-way from £47.38

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
Alaska Airlines533443306:0019:47VIEW FLIGHTS
Hawaiian Airlines433443306:0019:47VIEW FLIGHTS
KLM333333306:0018:05VIEW FLIGHTS
WestJet422332206:0018:05VIEW FLIGHTS
Delta Connection322222206:0018:05VIEW FLIGHTS
Virgin Atlantic222222206:0012:00VIEW FLIGHTS
SAS222222206:0012:00VIEW FLIGHTS
Qatar Airways322222106:0019:47VIEW FLIGHTS
Korean Air222222206:0018:05VIEW FLIGHTS
Volaris110220108:1317:03VIEW FLIGHTS
Japan Airlines111111106:0006:00VIEW FLIGHTS
Delta Air Lines011111111:4011:40VIEW FLIGHTS
Frontier110110108:1317:03VIEW FLIGHTS

The greatest amount of direct flights offered from Ontario International to Seattle-Tacoma International United States are by Alaska Airlines with around 25 flights a week. The earliest flight is available at 06:00 and the latest flights at 19:47 with the most popular flight number being AS1087, AS1091, AS1111 and AS1119.

alaskaair.com is available for information regarding booking flights etc with Alaska Airlines.

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
SASSK3875
WestJetWS8280
WestJetWS8340
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
09:40
AirlineFlightNo
VolarisY42452
FrontierF93164
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
12:00
AirlineFlightNo
SASSK3675
KLMKL7595
Delta ConnectionDL3697
Virgin AtlanticVS5467
12:05
AirlineFlightNo
Alaska AirlinesAS9807
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
19:47
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6287
Qatar AirwaysQR2180
VIEW FLIGHTS
Tuesday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8340
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
17:03
AirlineFlightNo
VolarisY42299
FrontierF92275
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
VIEW FLIGHTS
Wednesday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
VIEW FLIGHTS
Thursday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8280
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:13
AirlineFlightNo
VolarisY42452
VolarisY42462
FrontierF93164
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
19:40
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Friday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8280
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:13
AirlineFlightNo
VolarisY42452
VolarisY42462
FrontierF93164
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
19:40
AirlineFlightNo
Alaska AirlinesAS1087
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Saturday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8280
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:39
AirlineFlightNo
Alaska AirlinesAS1111
Hawaiian AirlinesHA6289
Qatar AirwaysQR2096
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
VIEW FLIGHTS
Sunday
06:00
AirlineFlightNo
Korean AirKE3098
SASSK3875
WestJetWS8280
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:13
AirlineFlightNo
VolarisY42462
FrontierF93164
11:40
AirlineFlightNo
SASSK3675
KLMKL7595
Delta Air LinesDL1566
Virgin AtlanticVS4052
15:06
AirlineFlightNo
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
18:05
AirlineFlightNo
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
19:40
AirlineFlightNo
Alaska AirlinesAS1087
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 Seattle 01,510 km (938 miles)2 Hours 35 Minutes
Las Vegas to Seattle 01,395 km (867 miles)2 Hours 27 Minutes
Los Angeles to Seattle 01,537 km (955 miles)2 Hours 37 Minutes
Palm Springs Municipal to Seattle 01,590 km (988 miles)2 Hours 41 Minutes
San Diego to Seattle 01,692 km (1,051 miles)2 Hours 48 Minutes
Santa Barbara Municipal to Seattle 01,463 km (909 miles)2 Hours 32 Minutes
San Bernardino Norton Afb to Seattle 01,544 km (960 miles)2 Hours 38 Minutes
Santa Ana John Wayne to Seattle 01,576 km (979 miles)2 Hours 40 Minutes
Los Angeles Van Nuys to Seattle 01,506 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.

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 £47.38 ($64 €54.60)
£47.38
$64 | €54.60
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 £95.50 ($129 €110.05)
£95.50
$129 | €110.05
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 Air Lines, Delta Connection, Frontier, Hawaiian Airlines, Japan Airlines, 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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