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

We've found the cheapest flights to Ontario

Returns from £54.17

One-way from £31.07

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. 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
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.

To book your flight you can visit Delta Connection on their website www.google.com/search?q=Delta Connection. 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
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

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 £31.07 ($39 €36.12)
£31.07
$39 | €36.12
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 £54.17 ($68 €62.98)
£54.17
$68 | €62.98
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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