Flights from Ontario Airport ONT to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £65.21

One-way from £37.79

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Jet Linx Aviation, Volaris, Frontier, Japan Airlines, SAS, Korean Air, Qatar Airways, Virgin Atlantic, KLM, Hawaiian Airlines, Alaska Airlines, Delta Connection and WestJet. These airliners all offer direct flights that depart from Ontario International, so you will find flying to Seattle-Tacoma International is quite easy. When travelling from Ontario International you will cover about 957 miles before you reach Seattle-Tacoma International. This journey will take 2 Hours 37 Minutes.

The price of the flight is dependent on the time of the day you fly and the day of the week with weekends being normally a higher price. If you are on a tight budget then you should avoid flying at peak hours as the prices are more expensive. The cheapest flights are in the evenings and in mid week. We advise all our viewers to book well in advance. This way you will get the low priced tickets available.

The table below displays the numbers of daily flights from Ontario International (ONT) to Seattle-Tacoma International (SEA) and the relevant airlines that fly.

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

WestJet offer the highest number of flights for this route with departures times between 06:00 and 19:05.

You can find the latest flight availability and prices from WestJet at westjet.com. You can also book direct and get their latest discounts.

Flight times for the route are summarised in the table below. These time were correct at the time of writing, but please be aware that times may vary from time to time so please check their website for exact times and the dates you wish to fly.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
06:00
AirlineFlight  No
Korean AirKE3098
WestJetWS7849
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlight  No
WestJetWS6910
WestJetWS7882
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:29
AirlineFlight  No
VolarisY42593
FrontierF93164
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Tuesday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlight  No
SASSK3675
WestJetWS5513
WestJetWS6910
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS7956
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Wednesday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
11:44
AirlineFlight  No
SASSK3675
WestJetWS5513
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS7956
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Thursday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS7902
WestJetWS8434
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:05
AirlineFlight  No
VolarisY42593
FrontierF93164
11:44
AirlineFlight  No
SASSK3675
WestJetWS5513
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS8642
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Friday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS6909
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Japan AirlinesJL6389
Qatar AirwaysQR2987
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:03
AirlineFlight  No
VolarisY42593
FrontierF93164
11:44
AirlineFlight  No
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS8642
WestJetWS8694
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS
Saturday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Qatar AirwaysQR2987
Jet Linx AviationJL6389
Delta ConnectionDL4042
Virgin AtlanticVS3853
08:42
AirlineFlight  No
Japan AirlinesJL6389
10:03
AirlineFlight  No
VolarisY42593
FrontierF93164
11:44
AirlineFlight  No
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS7956
WestJetWS8694
KLMKL6208
Delta ConnectionDL4031
VIEW FLIGHTS
Sunday
06:00
AirlineFlight  No
Korean AirKE3098
SASSK3875
WestJetWS7902
Alaska AirlinesAS1091
Hawaiian AirlinesHA6288
KLMKL6919
Qatar AirwaysQR2987
Jet Linx AviationJL6389
Delta ConnectionDL4042
Virgin AtlanticVS3853
10:03
AirlineFlight  No
VolarisY42593
FrontierF93164
11:44
AirlineFlight  No
SASSK3675
WestJetWS7904
KLMKL7595
Delta ConnectionDL4070
Virgin AtlanticVS5467
11:51
AirlineFlight  No
Alaska AirlinesAS1255
Hawaiian AirlinesHA6289
Qatar AirwaysQR2048
Qatar AirwaysQR2080
14:55
AirlineFlight  No
Delta ConnectionDL3946
Virgin AtlanticVS5381
16:45
AirlineFlight  No
Alaska AirlinesAS1119
Hawaiian AirlinesHA6290
19:05
AirlineFlight  No
Korean AirKE3070
WestJetWS7956
KLMKL6208
Delta ConnectionDL4031
19:20
AirlineFlight  No
Alaska AirlinesAS1399
Hawaiian AirlinesHA6287
VIEW FLIGHTS

Instead of flying from Ontario International you could consider a few airports that are close by. Please see that table below of alternative routes.

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
Palm Springs Bermuda Dunes to Seattle02 Hours 42 Minutes
Los Angeles Van Nuys to Seattle02 Hours 35 Minutes

Whilst you will find a bureau de change at Seattle-Tacoma International, we recommend you change some money before you depart if you don’t have the local currency. The exchange rates within any airport are not very favorable, so exchanging money before hand is a good idea.

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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.

Alternative Airports in United States with Connections from Ontario Airport

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Useful Information about Ontario Airport

Lounges at Ontario Airport

See all the airport lounges, locations and opening times available at Ontario Airport

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Eating and Drinking at Ontario Airport

See all bars and restaurants at Ontario Airport, including locations and if they are before or after check-in

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Duty Free Shopping at Ontario Airport

See all shops available at Ontario Airport - plan your duty free shopping in advance

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Ontario Tourist Attractions

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