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

We've found the cheapest flights to Ontario

Returns from £101.74

One-way from £57.82

Airliners including Frontier Airlines, Volaris, Virgin Atlantic, SAS, Japan Airlines, Frontier, Qatar Airways, Korean Air, KLM, Hawaiian Airlines, Alaska Airlines, Delta Connection and WestJet all offer direct flights between Seattle-Tacoma International to Ontario International. When travelling from Seattle-Tacoma International you will cover about 957 miles before you reach Ontario International. This journey will take 2 Hours 37 Minutes.

The exact cost of the flight we vary quite significantly base on the dates you travel, the time of day you will depart and how long in advance you pre book the flights. 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. Flight to Ontario International will get more expensive the nearer you get the departure date, so it’s advisable to book in advance if it is possible.

To see all airliners that offer flights between Seattle-Tacoma International and Ontario International please see the table below.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
WestJet444455314:2022:46VIEW FLIGHTS
Delta Connection444444407:3019:55VIEW FLIGHTS
Hawaiian Airlines444443400:1521:30VIEW FLIGHTS
Alaska Airlines444443408:2721:30VIEW FLIGHTS
Qatar Airways222222200:1521:30VIEW FLIGHTS
Korean Air222222214:2022:46VIEW FLIGHTS
KLM222222214:2022:46VIEW FLIGHTS
Volaris111111116:3016:30VIEW FLIGHTS
Virgin Atlantic111111119:5522:46VIEW FLIGHTS
SAS111111119:5522:46VIEW FLIGHTS
Japan Airlines111111115:2518:04VIEW FLIGHTS
Frontier111111113:5016:30VIEW FLIGHTS
Frontier Airlines000010013:5013:50VIEW FLIGHTS

WestJet is the most popular airliners who operate this route. They have around 29 a week with times that vary between 14:20 and 22:46.

To book your flight you can visit WestJet on their website westjet.com. You will find up to date information on availability and the 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
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS7644
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS6437
WestJetWS7523
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7842
VIEW FLIGHTS
Tuesday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS6437
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS7283
WestJetWS7644
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7842
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Wednesday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS7283
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS6437
WestJetWS7523
19:55
AirlineFlight  No
Delta ConnectionDL4027
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7842
KLMKL6206
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS7523
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS7283
WestJetWS7403
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7842
VIEW FLIGHTS
Friday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
Frontier AirlinesF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS7403
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
FrontierF93163
17:10
AirlineFlight  No
WestJetWS7083
WestJetWS7523
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7842
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7572
VIEW FLIGHTS
Saturday
00:15
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlight  No
Delta ConnectionDL3593
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Korean AirKE3070
WestJetWS7083
KLMKL6208
Delta ConnectionDL4031
15:20
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS7403
WestJetWS7523
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7572
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:46
AirlineFlight  No
WestJetWS7434
VIEW FLIGHTS
Sunday
00:15
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
11:05
AirlineFlight  No
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
13:50
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Delta ConnectionDL4031
14:46
AirlineFlight  No
Hawaiian AirlinesHA6813
15:25
AirlineFlight  No
Alaska AirlinesAS1086
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
Korean AirKE3070
WestJetWS7083
WestJetWS7523
KLMKL6208
18:04
AirlineFlight  No
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:55
AirlineFlight  No
Delta ConnectionDL4027
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:46
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7434
KLMKL6206
Virgin AtlanticVS5376
VIEW FLIGHTS

Please remember to leave plenty of time to get though customers when you are departing form the airports. Flights regulations are getting very strict these days so getting through customs can take in excess of 1 hour in some cases.

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Flight Price FAQ - Seattle (SEA) to Ontario (ONT)

DIRECT Frontier Airlines
What is the cheapest direct flight one way from Seattle SEA to Ontario ONT?
The cheapest direct flight one way from Seattle SEA to Ontario ONT is £57.82 ($79 €66.98)
£57.82
$79 | €66.98
Check Latest Price
DIRECT Frontier Airlines
What is the cheapest direct return flight from Seattle SEA to Ontario ONT?
The cheapest direct return flight from Seattle SEA to Ontario ONT is £101.74 ($139 €117.86)
£101.74
$139 | €117.86
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 SEA to ONT

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Flight Info FAQ - Seattle (SEA) to Ontario (ONT)

Who flies from Seattle to Ontario?
The following airlines fly from Seattle (SEA) to Ontario (ONT): Alaska Airlines, Delta Connection, Frontier, Frontier Airlines, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Qatar Airways, SAS, Virgin Atlantic, Volaris, WestJet.
How far is the flight from Seattle to Ontario?
The flight from Seattle to Ontario is 1,540KM or 957 miles.
How long does the flight from Seattle to Ontario to take?
The flight from Seattle to Ontario takes 2 Hours 37 Minutes.

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Useful Information about Ontario Airport

Lounges at Ontario Airport

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Duty Free Shopping at Ontario Airport

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Ontario Tourist Attractions

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