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

We've found the cheapest flights to Ontario

Returns from £94.51

One-way from £46.89

Airliners including Delta Air Lines, Frontier, Volaris, Virgin Atlantic, SAS, Jet Linx Aviation, WestJet, Qatar Airways, Korean Air, KLM, Delta Connection, Hawaiian Airlines and Alaska Airlines 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
Alaska Airlines443444400:0321:17VIEW FLIGHTS
Hawaiian Airlines443444300:0321:17VIEW FLIGHTS
Delta Connection322333308:1519:50VIEW FLIGHTS
Korean Air222222214:0622:40VIEW FLIGHTS
KLM222222214:0622:40VIEW FLIGHTS
WestJet211222214:0617:11VIEW FLIGHTS
Qatar Airways221222100:0321:17VIEW FLIGHTS
Virgin Atlantic111111119:5022:40VIEW FLIGHTS
SAS111111119:5022:40VIEW FLIGHTS
Jet Linx Aviation111111118:4718:47VIEW FLIGHTS
Volaris100220112:0515:18VIEW FLIGHTS
Frontier100110112:0512:30VIEW FLIGHTS
Delta Air Lines011000008:0508:05VIEW FLIGHTS

Alaska Airlines is the most popular airliners who operate this route. They have around 27 a week with times that vary between 00:03 and 21:17.

To book your flight you can visit Alaska Airlines on their website alaskaair.com. 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
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:30
AirlineFlight  No
Delta ConnectionDL3593
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
12:30
AirlineFlight  No
VolarisY42461
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
KLMKL6208
Delta ConnectionDL4031
15:55
AirlineFlight  No
Alaska AirlinesAS1086
17:11
AirlineFlight  No
WestJetWS7621
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:17
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Tuesday
00:03
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:05
AirlineFlight  No
Delta Air LinesDL1561
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
KLMKL6208
Delta ConnectionDL4031
15:55
AirlineFlight  No
Alaska AirlinesAS1086
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Wednesday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:05
AirlineFlight  No
Delta Air LinesDL1561
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
KLMKL6208
Delta ConnectionDL4031
15:55
AirlineFlight  No
Alaska AirlinesAS1086
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
Delta ConnectionDL4096
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
12:05
AirlineFlight  No
VolarisY42461
FrontierF93163
14:06
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
KLMKL6208
Delta ConnectionDL4031
14:53
AirlineFlight  No
VolarisY42482
15:55
AirlineFlight  No
Alaska AirlinesAS1086
17:00
AirlineFlight  No
WestJetWS7486
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:17
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
Delta ConnectionDL4096
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
12:30
AirlineFlight  No
VolarisY42482
FrontierF93163
14:06
AirlineFlight  No
Korean AirKE3070
WestJetWS7486
KLMKL6208
Delta ConnectionDL4031
15:18
AirlineFlight  No
VolarisY42461
15:55
AirlineFlight  No
Alaska AirlinesAS1086
17:00
AirlineFlight  No
WestJetWS7465
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:17
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Saturday
00:03
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
Delta ConnectionDL4096
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
14:06
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
KLMKL6208
Delta ConnectionDL4031
15:55
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
17:00
AirlineFlight  No
WestJetWS7486
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Sunday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
08:15
AirlineFlight  No
Delta ConnectionDL4096
10:44
AirlineFlight  No
Hawaiian AirlinesHA6814
11:25
AirlineFlight  No
Alaska AirlinesAS1118
12:05
AirlineFlight  No
FrontierF93163
14:06
AirlineFlight  No
Delta ConnectionDL4031
14:12
AirlineFlight  No
Hawaiian AirlinesHA6813
14:53
AirlineFlight  No
VolarisY42482
15:55
AirlineFlight  No
Alaska AirlinesAS1086
17:00
AirlineFlight  No
Korean AirKE3070
WestJetWS7465
WestJetWS7486
KLMKL6208
18:47
AirlineFlight  No
Hawaiian AirlinesHA6668
Qatar AirwaysQR3308
Jet Linx AviationJL6388
19:50
AirlineFlight  No
Delta ConnectionDL4027
21:17
AirlineFlight  No
Alaska AirlinesAS1040
22:40
AirlineFlight  No
Korean AirKE3106
SASSK3676
KLMKL6206
Virgin AtlanticVS5376
VIEW FLIGHTS

If the airlines stated don’t offer flights that suite your travel times, you could look at alternative options. Below we have summarised flights from alternative departures airports and flights that are not direct.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Mount Vernon to Ontario 02 Hours 45 Minutes

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.

Don't forget to book your car rental!

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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 £46.89 ($64 €54.07)
£46.89
$64 | €54.07
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 £94.51 ($129 €108.98)
£94.51
$129 | €108.98
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): Alaska Airlines, Delta Air Lines, Delta Connection, Frontier, Hawaiian Airlines, Jet Linx Aviation, 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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Useful Information about Ontario Airport

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