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

We've found the cheapest flights to Ontario

Returns from £53.94

One-way from £30.94

Airliners including Jet Linx Aviation, Alaska Horizon, China Airlines, Alaska SkyWest, Aeromexico, Japan Airlines, Korean Air, Virgin Atlantic, Qatar Airways, KLM, WestJet, Alaska Airlines and Delta Connection 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
Delta Connection444444410:0422:39VIEW FLIGHTS
Alaska Airlines422442409:3323:59VIEW FLIGHTS
WestJet234333210:5418:02VIEW FLIGHTS
KLM233222210:5422:39VIEW FLIGHTS
Qatar Airways311331216:3123:59VIEW FLIGHTS
Virgin Atlantic122111110:5422:39VIEW FLIGHTS
Korean Air211111115:2322:39VIEW FLIGHTS
Japan Airlines111111113:3216:05VIEW FLIGHTS
China Airlines011000010:5413:33VIEW FLIGHTS
Alaska SkyWest011000009:3309:33VIEW FLIGHTS
Aeromexico011000010:5413:33VIEW FLIGHTS
Jet Linx Aviation100000016:0516:05VIEW FLIGHTS
Alaska Horizon0000010VIEW FLIGHTS

Delta Connection is the most popular airliners who operate this route. They have around 28 a week with times that vary between 10:04 and 22:39.

Would you like to book your flight? Bookings can be made direct with Delta Connection on their website www.google.com/search?q=Delta Connection.

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
09:33
AirlineFlight  No
Alaska AirlinesAS1254
10:39
AirlineFlight  No
Delta ConnectionDL4020
13:11
AirlineFlight  No
Delta ConnectionDL4016
13:32
AirlineFlight  No
Japan AirlinesJL6388
16:05
AirlineFlight  No
Alaska AirlinesAS1097
Jet Linx AviationJL6388
16:31
AirlineFlight  No
Qatar AirwaysQR2105
17:00
AirlineFlight  No
Korean AirKE3070
WestJetWS7240
WestJetWS7511
KLMKL5150
Delta ConnectionDL4032
19:04
AirlineFlight  No
Alaska AirlinesAS1086
22:39
AirlineFlight  No
Korean AirKE3106
KLMKL6240
Delta ConnectionDL4031
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Alaska AirlinesAS1040
Qatar AirwaysQR2146
Qatar AirwaysQR4277
VIEW FLIGHTS
Tuesday
09:33
AirlineFlight  No
Alaska SkyWestAS3452
10:04
AirlineFlight  No
Delta ConnectionDL3881
10:54
AirlineFlight  No
AeromexicoAM3949
WestJetWS6453
KLMKL5504
China AirlinesCI9150
Delta ConnectionDL3946
Virgin AtlanticVS1973
13:32
AirlineFlight  No
Alaska AirlinesAS1097
Japan AirlinesJL6388
15:23
AirlineFlight  No
Korean AirKE3070
WestJetWS7564
KLMKL6240
Delta ConnectionDL3728
18:02
AirlineFlight  No
WestJetWS8074
21:28
AirlineFlight  No
Alaska AirlinesAS1088
Qatar AirwaysQR2105
22:38
AirlineFlight  No
KLMKL5150
Delta ConnectionDL3865
Virgin AtlanticVS5376
VIEW FLIGHTS
Wednesday
09:33
AirlineFlight  No
Alaska SkyWestAS3452
10:04
AirlineFlight  No
Delta ConnectionDL3881
13:32
AirlineFlight  No
Alaska AirlinesAS1097
13:33
AirlineFlight  No
AeromexicoAM3949
WestJetWS6453
KLMKL5504
China AirlinesCI9150
Delta ConnectionDL3946
Virgin AtlanticVS1973
15:23
AirlineFlight  No
Korean AirKE3070
WestJetWS8074
KLMKL6240
Delta ConnectionDL3728
16:05
AirlineFlight  No
Japan AirlinesJL6388
18:02
AirlineFlight  No
WestJetWS7564
WestJetWS8296
18:55
AirlineFlight  No
Alaska AirlinesAS1088
Qatar AirwaysQR2105
19:55
AirlineFlight  No
KLMKL5150
Delta ConnectionDL3865
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
09:33
AirlineFlight  No
Alaska AirlinesAS1254
10:04
AirlineFlight  No
Delta ConnectionDL3881
13:32
AirlineFlight  No
Alaska AirlinesAS1097
Japan AirlinesJL6388
13:33
AirlineFlight  No
Delta ConnectionDL3946
15:23
AirlineFlight  No
WestJetWS8296
18:02
AirlineFlight  No
Korean AirKE3070
WestJetWS8074
WestJetWS8161
KLMKL6240
Delta ConnectionDL3728
19:04
AirlineFlight  No
Alaska AirlinesAS1086
Qatar AirwaysQR2105
19:55
AirlineFlight  No
Delta ConnectionDL3865
22:38
AirlineFlight  No
KLMKL5150
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Alaska AirlinesAS1040
Qatar AirwaysQR2146
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
09:33
AirlineFlight  No
Alaska AirlinesAS1254
10:04
AirlineFlight  No
Delta ConnectionDL3881
13:13
AirlineFlight  No
Alaska AirlinesAS1097
13:33
AirlineFlight  No
Delta ConnectionDL3946
15:23
AirlineFlight  No
Korean AirKE3070
KLMKL6240
Delta ConnectionDL3728
15:46
AirlineFlight  No
Japan AirlinesJL6388
16:31
AirlineFlight  No
Alaska AirlinesAS1086
18:02
AirlineFlight  No
WestJetWS6969
WestJetWS8161
WestJetWS8296
19:04
AirlineFlight  No
Qatar AirwaysQR2105
19:55
AirlineFlight  No
KLMKL5150
Delta ConnectionDL3865
21:26
AirlineFlight  No
Qatar AirwaysQR2146
22:38
AirlineFlight  No
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Alaska AirlinesAS1040
Qatar AirwaysQR4277
VIEW FLIGHTS
Saturday
07:00
AirlineFlight  No
Alaska HorizonAS2055
07:25
AirlineFlight  No
Delta ConnectionDL3881
13:33
AirlineFlight  No
Delta ConnectionDL3946
16:05
AirlineFlight  No
Alaska AirlinesAS1097
Japan AirlinesJL6388
18:02
AirlineFlight  No
Korean AirKE3070
WestJetWS6969
WestJetWS8161
WestJetWS8264
KLMKL6240
Delta ConnectionDL3728
18:55
AirlineFlight  No
Alaska AirlinesAS1088
19:55
AirlineFlight  No
Delta ConnectionDL3865
21:28
AirlineFlight  No
Qatar AirwaysQR2105
22:38
AirlineFlight  No
KLMKL5150
Virgin AtlanticVS5376
VIEW FLIGHTS
Sunday
09:33
AirlineFlight  No
Alaska AirlinesAS1254
10:04
AirlineFlight  No
Delta ConnectionDL3881
13:33
AirlineFlight  No
Delta ConnectionDL3946
15:23
AirlineFlight  No
Delta ConnectionDL3728
15:48
AirlineFlight  No
Alaska AirlinesAS1097
Japan AirlinesJL6388
16:31
AirlineFlight  No
Alaska AirlinesAS1086
18:02
AirlineFlight  No
Korean AirKE3070
WestJetWS6969
WestJetWS8264
KLMKL6240
19:04
AirlineFlight  No
Qatar AirwaysQR2105
22:38
AirlineFlight  No
KLMKL5150
Delta ConnectionDL3865
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Alaska AirlinesAS1040
Qatar AirwaysQR2146
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 £30.94 ($39 €36.03)
£30.94
$39 | €36.03
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 £53.94 ($68 €62.82)
£53.94
$68 | €62.82
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): Aeromexico, Alaska Airlines, Alaska Horizon, Alaska SkyWest, China Airlines, Delta Connection, Japan Airlines, Jet Linx Aviation, KLM, Korean Air, Qatar Airways, Virgin Atlantic, 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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