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

We've found the cheapest flights to Ontario

Returns from £102.21

One-way from £58.09

Airliners including Japan Airlines, Volaris, Virgin Atlantic, SAS, Frontier, Qatar Airways, KLM, Korean Air, 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
Alaska Airlines455544500:1521:30VIEW FLIGHTS
WestJet666433314:2022:46VIEW FLIGHTS
Hawaiian Airlines455543500:1521:30VIEW FLIGHTS
Delta Connection444433407:3019:55VIEW FLIGHTS
Korean Air222222214:2022:46VIEW FLIGHTS
Qatar Airways222211200:1521:30VIEW FLIGHTS
KLM222211214:2019:55VIEW FLIGHTS
Volaris111111116:3016:36VIEW FLIGHTS
Virgin Atlantic111111119:5519:55VIEW FLIGHTS
SAS111111119:5519:55VIEW FLIGHTS
Frontier111111113:4213:50VIEW FLIGHTS
Japan Airlines111101115:2518:04VIEW FLIGHTS

Alaska Airlines is the most popular airliners who operate this route. They have around 32 a week with times that vary between 00:15 and 21:30.

Would you like to book your flight? Bookings can be made direct with Alaska Airlines on their website alaskaair.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
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
16:30
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS6437
WestJetWS7523
18:04
AirlineFlight  No
Qatar AirwaysQR3308
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7434
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7637
WestJetWS8530
VIEW FLIGHTS
Tuesday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
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
WestJetWS7637
WestJetWS8530
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7223
VIEW FLIGHTS
Wednesday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
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
Korean AirKE3106
SASSK3676
WestJetWS7223
WestJetWS8530
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlight  No
WestJetWS7434
VIEW FLIGHTS
Thursday
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
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
19:55
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7223
WestJetWS7434
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
00:15
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlight  No
FrontierF93163
16:30
AirlineFlight  No
VolarisY42603
19:55
AirlineFlight  No
Korean AirKE3070
Korean AirKE3106
SASSK3676
WestJetWS7434
WestJetWS7523
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
22:46
AirlineFlight  No
WestJetWS7083
VIEW FLIGHTS
Saturday
07:30
AirlineFlight  No
Delta ConnectionDL3593
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
VolarisY42603
FrontierF93163
15:20
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:55
AirlineFlight  No
Korean AirKE3070
SASSK3676
WestJetWS7083
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:46
AirlineFlight  No
Korean AirKE3106
WestJetWS7394
WestJetWS7523
VIEW FLIGHTS
Sunday
00:15
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlight  No
Delta ConnectionDL3593
08:27
AirlineFlight  No
Alaska AirlinesAS1254
10:47
AirlineFlight  No
Alaska AirlinesAS1278
11:05
AirlineFlight  No
Hawaiian AirlinesHA6814
11:33
AirlineFlight  No
Delta ConnectionDL3589
12:00
AirlineFlight  No
Alaska AirlinesAS1118
13:26
AirlineFlight  No
Hawaiian AirlinesHA6803
13:42
AirlineFlight  No
FrontierF93163
14:20
AirlineFlight  No
Delta ConnectionDL4031
14:46
AirlineFlight  No
Hawaiian AirlinesHA6813
15:25
AirlineFlight  No
Alaska AirlinesAS1086
16:36
AirlineFlight  No
VolarisY42603
17:10
AirlineFlight  No
WestJetWS7434
KLMKL6208
18:04
AirlineFlight  No
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:55
AirlineFlight  No
Korean AirKE3070
SASSK3676
WestJetWS7083
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
22:46
AirlineFlight  No
Korean AirKE3106
WestJetWS7394
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 £58.09 ($79 €67.36)
£58.09
$79 | €67.36
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 £102.21 ($139 €118.51)
£102.21
$139 | €118.51
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, 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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