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

We've found the cheapest flights to Ontario

Returns from £101.31

One-way from £56.20

Airliners including Air Transport International, Volaris, Virgin Atlantic, SAS, Japan Airlines, Frontier, Delta Air Lines, Qatar Airways, Korean Air, KLM, Delta Connection, WestJet, Hawaiian Airlines and Alaska Airlines all offer direct flights between Seattle-Tacoma International to Ontario International. The flight from Seattle-Tacoma International to Ontario International is approximately 1,540 Kilometers which is 957 Miles. You should expect a flight time of around 2 Hours 37 Minutes.

Depending on the day of the week and the time of day you book, flight prices can vary dramatically. To obtain the best prices for Ontario International flights than book well in advance. If it is possible, you should book your flights 2 or more months in advance as ticket prices will be substantially lower.

Below you will see all the airlines that fly from Seattle-Tacoma International (SEA) to Ontario International (ONT) and the number of flights they operate each day.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
WestJet655455414:1522:42VIEW FLIGHTS
Hawaiian Airlines555554500:1521:30VIEW FLIGHTS
Alaska Airlines555554508:2721:30VIEW FLIGHTS
Qatar Airways222222200:1521:30VIEW FLIGHTS
Korean Air222222214:1522:42VIEW FLIGHTS
KLM222222214:1522:42VIEW FLIGHTS
Delta Connection222222214:1519:50VIEW FLIGHTS
Volaris111111113:4216:36VIEW FLIGHTS
Virgin Atlantic111111119:5019:50VIEW FLIGHTS
SAS111111119:5019:50VIEW FLIGHTS
Japan Airlines111111115:2518:04VIEW FLIGHTS
Frontier111111113:4213:42VIEW FLIGHTS
Delta Air Lines111111108:0508:05VIEW FLIGHTS
Air Transport International000010008:3008:30VIEW FLIGHTS

WestJet is the most popular airliners who operate this route. They have around 34 a week with times that vary between 14:15 and 22:42.

Would you like to book your flight? Bookings can be made direct with WestJet on their website westjet.com.

The flight time for the selected route vary based on the month you will travel, but below we has summarised the most common times they will fly. We recommend you only take these times as guidance and check with appropriate airline for the exact times for the date you depart.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
17:11
AirlineFlight  No
WestJetWS7713
WestJetWS8373
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7643
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS6621
WestJetWS7705
VIEW FLIGHTS
Tuesday
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:36
AirlineFlight  No
VolarisY42528
17:11
AirlineFlight  No
WestJetWS7621
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS6621
WestJetWS7643
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS7327
VIEW FLIGHTS
Wednesday
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:26
AirlineFlight  No
Hawaiian AirlinesHA6803
13:42
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
17:11
AirlineFlight  No
WestJetWS8373
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7327
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS6621
WestJetWS7541
VIEW FLIGHTS
Thursday
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:36
AirlineFlight  No
VolarisY42528
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7327
WestJetWS7541
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS7575
VIEW FLIGHTS
Friday
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:30
AirlineFlight  No
Air Transport International8C6713
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:36
AirlineFlight  No
VolarisY42528
17:11
AirlineFlight  No
WestJetWS8373
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7541
WestJetWS7575
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS7572
VIEW FLIGHTS
Saturday
00:15
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
08:05
AirlineFlight  No
Delta Air LinesDL1561
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
15:20
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
17:11
AirlineFlight  No
WestJetWS7621
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7572
WestJetWS7575
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:42
AirlineFlight  No
WestJetWS7541
VIEW FLIGHTS
Sunday
00:15
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
08:05
AirlineFlight  No
Delta Air LinesDL1561
08:27
AirlineFlight  No
Alaska AirlinesAS1254
10:47
AirlineFlight  No
Alaska AirlinesAS1278
11:05
AirlineFlight  No
Hawaiian AirlinesHA6814
12:00
AirlineFlight  No
Alaska AirlinesAS1118
13:26
AirlineFlight  No
Hawaiian AirlinesHA6803
13:42
AirlineFlight  No
FrontierF93163
14:15
AirlineFlight  No
Delta ConnectionDL4031
14:46
AirlineFlight  No
Hawaiian AirlinesHA6813
15:25
AirlineFlight  No
Alaska AirlinesAS1086
16:36
AirlineFlight  No
VolarisY42528
17:11
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
18:04
AirlineFlight  No
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
SASSK3676
WestJetWS7572
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:42
AirlineFlight  No
Korean AirKE3106
WestJetWS7541
KLMKL6206
VIEW FLIGHTS

If you are planning to hire a car from Ontario International airport then don’t wait until you arrive. The prices are typically 20% to 30% higher and the availability of vehicles are much lower. You can check out the solutions we have for car hire on our car hire pages which can save you £££’s.

Looking for the best car hire deals?

Find cheap car rentals in Ontario

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 £56.20 ($76 €64.84)
£56.20
$76 | €64.84
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 £101.31 ($137 €116.87)
£101.31
$137 | €116.87
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): Air Transport International, 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 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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