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

We've found the cheapest flights to Ontario

Returns from £102.04

One-way from £56.60

Airliners including Volaris, Virgin Atlantic, SAS, Japan Airlines, Frontier, Delta Air Lines, Qatar Airways, Korean Air, KLM, Delta Connection, Alaska Airlines, Hawaiian Airlines and WestJet 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
WestJet555455414:1522:42VIEW FLIGHTS
Hawaiian Airlines465443400:1523:59VIEW FLIGHTS
Alaska Airlines454443400:1521:30VIEW FLIGHTS
Qatar Airways232221200:1523:59VIEW FLIGHTS
Korean Air222222214:1522:42VIEW FLIGHTS
KLM222222214:1522:42VIEW FLIGHTS
Delta Connection222222214:1519:50VIEW FLIGHTS
Virgin Atlantic111111119:5022:42VIEW FLIGHTS
SAS111111119:5022:42VIEW FLIGHTS
Japan Airlines111111115:2518:28VIEW FLIGHTS
Frontier111111113:2020:42VIEW FLIGHTS
Delta Air Lines111111108:0508:05VIEW FLIGHTS
Volaris100110113:2016:14VIEW FLIGHTS

WestJet is the most popular airliners who operate this route. They have around 33 a week with times that vary between 14:15 and 22:42.

To book your flight you can visit WestJet on their website westjet.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
08:05
AirlineFlight  No
Delta Air LinesDL1561
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
17:11
AirlineFlight  No
WestJetWS7621
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7541
WestJetWS7637
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS6616
VIEW FLIGHTS
Tuesday
00:15
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
08:05
AirlineFlight  No
Delta Air LinesDL1561
10:47
AirlineFlight  No
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
12:00
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
17:11
AirlineFlight  No
WestJetWS7621
18:04
AirlineFlight  No
Hawaiian AirlinesHA6668
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS6616
WestJetWS7637
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:42
AirlineFlight  No
FrontierF92276
21:30
AirlineFlight  No
Alaska AirlinesAS332
Hawaiian AirlinesHA4759
Qatar AirwaysQR2138
22:42
AirlineFlight  No
WestJetWS7330
VIEW FLIGHTS
Wednesday
00:15
AirlineFlight  No
Alaska AirlinesAS332
Hawaiian AirlinesHA4759
Qatar AirwaysQR2138
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
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:48
AirlineFlight  No
Alaska AirlinesAS1086
17:11
AirlineFlight  No
WestJetWS8373
18:28
AirlineFlight  No
Hawaiian AirlinesHA6668
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS6616
WestJetWS7330
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:42
AirlineFlight  No
FrontierF92276
22:42
AirlineFlight  No
WestJetWS7541
VIEW FLIGHTS
Thursday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:05
AirlineFlight  No
Delta Air LinesDL1561
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:20
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:48
AirlineFlight  No
Alaska AirlinesAS1086
18:28
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
Korean AirKE3106
WestJetWS7541
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:17
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
SASSK3676
WestJetWS7330
WestJetWS7575
VIEW FLIGHTS
Friday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:05
AirlineFlight  No
Delta Air LinesDL1561
11:25
AirlineFlight  No
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:20
AirlineFlight  No
VolarisY42528
FrontierF93163
14:15
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
KLMKL6208
Delta ConnectionDL4031
15:48
AirlineFlight  No
Alaska AirlinesAS1086
17:11
AirlineFlight  No
WestJetWS8373
18:28
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7541
WestJetWS7575
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:17
AirlineFlight  No
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:42
AirlineFlight  No
WestJetWS7572
VIEW FLIGHTS
Saturday
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
WestJetWS8373
KLMKL6208
Delta ConnectionDL4031
15:48
AirlineFlight  No
Alaska AirlinesAS1086
17:11
AirlineFlight  No
WestJetWS7621
18:28
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7572
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:27
AirlineFlight  No
FrontierF92276
22:42
AirlineFlight  No
WestJetWS7541
WestJetWS7575
VIEW FLIGHTS
Sunday
07:55
AirlineFlight  No
Alaska AirlinesAS1254
08:05
AirlineFlight  No
Delta Air LinesDL1561
10:44
AirlineFlight  No
Hawaiian AirlinesHA6814
11:25
AirlineFlight  No
Alaska AirlinesAS1118
13:20
AirlineFlight  No
FrontierF93163
14:09
AirlineFlight  No
Hawaiian AirlinesHA6813
14:15
AirlineFlight  No
Delta ConnectionDL4031
15:48
AirlineFlight  No
Alaska AirlinesAS1086
16:14
AirlineFlight  No
VolarisY42528
17:11
AirlineFlight  No
Korean AirKE3070
WestJetWS7621
WestJetWS8373
KLMKL6208
18:28
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:50
AirlineFlight  No
Delta ConnectionDL4027
21:17
AirlineFlight  No
Alaska AirlinesAS1040
22:42
AirlineFlight  No
Korean AirKE3106
SASSK3676
WestJetWS7541
WestJetWS7572
KLMKL6206
Virgin AtlanticVS5376
23:59
AirlineFlight  No
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
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
Seattle Boeing Field King County to Ontario 02 Hours 38 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.

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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 £56.60 ($76 €65.63)
£56.60
$76 | €65.63
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 £102.04 ($137 €118.30)
£102.04
$137 | €118.30
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, 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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Useful Information about Ontario Airport

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