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

We've found the cheapest flights to Ontario

Returns from £55.30

One-way from £21.21

Airliners including Air Transport International, Delta Air Lines, Virgin Atlantic, Volaris, Frontier, WestJet, Japan Airlines, Korean Air, KLM, Qatar Airways, Delta Connection, 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
Hawaiian Airlines555243401:0123:59VIEW FLIGHTS
Alaska Airlines555243401:0122:25VIEW FLIGHTS
Delta Connection333112208:1520:05VIEW FLIGHTS
Qatar Airways333021201:0123:59VIEW FLIGHTS
Korean Air222112214:1922:55VIEW FLIGHTS
KLM222112214:1922:55VIEW FLIGHTS
WestJet111111114:1917:09VIEW FLIGHTS
Japan Airlines111111113:2215:54VIEW FLIGHTS
Volaris111011114:1716:57VIEW FLIGHTS
Frontier111011114:1714:17VIEW FLIGHTS
Virgin Atlantic111001120:0522:55VIEW FLIGHTS
Delta Air Lines000001120:0520:05VIEW FLIGHTS
Air Transport International100000010:3010:30VIEW FLIGHTS

Hawaiian Airlines is the most popular airliners who operate this route. They have around 28 a week with times that vary between 01:01 and 23:59.

Would you like to book your flight? Bookings can be made direct with Hawaiian Airlines on their website hawaiianair.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
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
08:15
AirlineFlight  No
Delta ConnectionDL4096
10:30
AirlineFlight  No
Air Transport International8C6727
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
14:17
AirlineFlight  No
VolarisY42520
FrontierF93163
14:19
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS592
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
20:05
AirlineFlight  No
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:25
AirlineFlight  No
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
22:25
AirlineFlight  No
Alaska AirlinesAS1468
Hawaiian AirlinesHA4709
Qatar AirwaysQR2102
VIEW FLIGHTS
Tuesday
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
08:15
AirlineFlight  No
Delta ConnectionDL4096
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
14:17
AirlineFlight  No
VolarisY42520
FrontierF93163
14:19
AirlineFlight  No
Korean AirKE3070
KLMKL6436
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS592
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
17:09
AirlineFlight  No
WestJetWS8373
20:05
AirlineFlight  No
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:25
AirlineFlight  No
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
22:25
AirlineFlight  No
Alaska AirlinesAS1468
Hawaiian AirlinesHA4709
Qatar AirwaysQR2102
VIEW FLIGHTS
Wednesday
01:01
AirlineFlight  No
Alaska AirlinesAS1468
Hawaiian AirlinesHA4709
Qatar AirwaysQR2102
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
08:15
AirlineFlight  No
Delta ConnectionDL4096
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
14:17
AirlineFlight  No
VolarisY42520
FrontierF93163
14:19
AirlineFlight  No
Korean AirKE3070
KLMKL6436
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS592
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
17:09
AirlineFlight  No
WestJetWS8373
20:05
AirlineFlight  No
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:25
AirlineFlight  No
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Thursday
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
15:30
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
VIEW FLIGHTS
Friday
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
14:17
AirlineFlight  No
VolarisY42528
FrontierF93163
15:30
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS592
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
21:25
AirlineFlight  No
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Saturday
07:15
AirlineFlight  No
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
08:17
AirlineFlight  No
Delta ConnectionDL4096
13:22
AirlineFlight  No
Alaska AirlinesAS664
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
14:17
AirlineFlight  No
VolarisY42528
FrontierF93163
14:19
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
20:05
AirlineFlight  No
Delta Air LinesDL4027
21:25
AirlineFlight  No
Alaska AirlinesAS489
22:55
AirlineFlight  No
Korean AirKE3106
KLMKL6435
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Sunday
07:15
AirlineFlight  No
Alaska AirlinesAS1364
08:17
AirlineFlight  No
Delta ConnectionDL4096
09:55
AirlineFlight  No
Hawaiian AirlinesHA6836
13:22
AirlineFlight  No
Alaska AirlinesAS664
14:17
AirlineFlight  No
FrontierF93163
14:19
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS592
15:54
AirlineFlight  No
Hawaiian AirlinesHA6834
Japan AirlinesJL6388
16:57
AirlineFlight  No
VolarisY42528
17:09
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6436
18:27
AirlineFlight  No
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
20:05
AirlineFlight  No
Delta Air LinesDL4027
21:25
AirlineFlight  No
Alaska AirlinesAS489
22:55
AirlineFlight  No
Korean AirKE3106
KLMKL6435
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
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 £21.21 ($28 €24.11)
£21.21
$28 | €24.11
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 £55.30 ($73 €62.86)
£55.30
$73 | €62.86
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): Air Transport International, Alaska Airlines, Delta Air Lines, Delta Connection, Frontier, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Qatar Airways, 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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