Flights from Seattle Airport SEA to Ontario Airport ONT

We've found the cheapest flights to Ontario

Returns from £79.58

One-way from £34.95

A variety of 11 airline companies have direct flights to Ontario International to Seattle-Tacoma International, Volaris, SAS, Frontier, Virgin Atlantic, Korean Air, Jet Linx Aviation, WestJet, KLM, Qatar Airways, Alaska Airlines and Delta Connection. The distance covered when flying from Seattle-Tacoma International to Ontario International United States is 1,540 Km (957 Miles) with the travel time being around 2 Hours 37 Minutes. SEA is the Airport code for Seattle-Tacoma International and ONT is for Ontario International United States.

The cost of ticket prices to Ontario International United States can vary quite considerably if you travel at certain times of the week especially at weekends. It is normally worth booking flights well in advance if possible to get the best deal to Ontario International United States perhaps midweek or late evening. Please book in advance if you want to take advantage of the best prices airlines have to offer as prices normally increase as time goes on.

Below you can see a table that shows the airlines that fly from Seattle-Tacoma International (SEA) to Ontario International (ONT) and frequency of flights daily.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Delta Connection444444308:2519:50VIEW FLIGHTS
Alaska Airlines444443308:3021:22VIEW FLIGHTS
Qatar Airways333202208:3023:58VIEW FLIGHTS
WestJet222222117:1019:50VIEW FLIGHTS
KLM222222117:1019:50VIEW FLIGHTS
Korean Air111111117:1017:10VIEW FLIGHTS
Jet Linx Aviation111111115:0915:09VIEW FLIGHTS
Virgin Atlantic111111019:5019:50VIEW FLIGHTS
Volaris100111111:5114:35VIEW FLIGHTS
SAS110111019:5022:34VIEW FLIGHTS
Frontier100111111:5114:35VIEW FLIGHTS

Delta Connection offer the most direct flights from Seattle-Tacoma International to Ontario International with an average of 27 flights a week. The earliest flights are operated at 08:25 and the latest flights operated at 19:50 and the most common flight numbers are DL3840, DL3884, DL4031 and DL4070

For more details regarding Delta Connection flight information and bookings you can visit them at www.google.com/search?q=Delta Connection

Please see below the times of flights. These times and frequency may vary at different times of the year please visit the website for more information.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:30
AirlineFlightNo
Alaska AirlinesAS1364
11:10
AirlineFlightNo
Qatar AirwaysQR2017
11:51
AirlineFlightNo
VolarisY42359
FrontierF92276
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
16:40
AirlineFlightNo
Alaska AirlinesAS592
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
21:22
AirlineFlightNo
Alaska AirlinesAS489
22:34
AirlineFlightNo
SASSK3259
23:58
AirlineFlightNo
Qatar AirwaysQR3320
VIEW FLIGHTS
Tuesday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:30
AirlineFlightNo
Alaska AirlinesAS1364
Qatar AirwaysQR2017
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
16:10
AirlineFlightNo
Alaska AirlinesAS592
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
SASSK3259
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
21:22
AirlineFlightNo
Alaska AirlinesAS489
23:58
AirlineFlightNo
Qatar AirwaysQR3320
VIEW FLIGHTS
Wednesday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:32
AirlineFlightNo
Alaska AirlinesAS1364
11:12
AirlineFlightNo
Qatar AirwaysQR2017
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
16:10
AirlineFlightNo
Alaska AirlinesAS592
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
21:22
AirlineFlightNo
Alaska AirlinesAS489
23:58
AirlineFlightNo
Qatar AirwaysQR3320
VIEW FLIGHTS
Thursday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:30
AirlineFlightNo
Alaska AirlinesAS1364
Qatar AirwaysQR2017
11:51
AirlineFlightNo
FrontierF92276
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
14:35
AirlineFlightNo
VolarisY42359
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
16:10
AirlineFlightNo
Alaska AirlinesAS592
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
21:22
AirlineFlightNo
Alaska AirlinesAS489
22:34
AirlineFlightNo
SASSK3259
VIEW FLIGHTS
Friday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:30
AirlineFlightNo
Alaska AirlinesAS1364
11:51
AirlineFlightNo
VolarisY42359
FrontierF92276
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:09
AirlineFlightNo
Alaska AirlinesAS625
Jet Linx AviationJL6388
16:10
AirlineFlightNo
Alaska AirlinesAS592
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
SASSK3259
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
21:22
AirlineFlightNo
Alaska AirlinesAS489
VIEW FLIGHTS
Saturday
08:25
AirlineFlightNo
Delta ConnectionDL4070
08:30
AirlineFlightNo
Alaska AirlinesAS1364
11:10
AirlineFlightNo
Qatar AirwaysQR2017
11:51
AirlineFlightNo
VolarisY42359
FrontierF92276
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
16:25
AirlineFlightNo
Alaska AirlinesAS592
17:05
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
19:50
AirlineFlightNo
SASSK3259
WestJetWS7755
KLMKL6269
Delta ConnectionDL3884
Virgin AtlanticVS5470
VIEW FLIGHTS
Sunday
11:10
AirlineFlightNo
Alaska AirlinesAS1364
Qatar AirwaysQR2017
11:12
AirlineFlightNo
Delta ConnectionDL4070
12:35
AirlineFlightNo
Delta ConnectionDL3840
14:35
AirlineFlightNo
VolarisY42359
FrontierF92276
15:09
AirlineFlightNo
Alaska AirlinesAS625
Qatar AirwaysQR2036
Jet Linx AviationJL6388
17:10
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
Delta ConnectionDL4031
18:47
AirlineFlightNo
Alaska AirlinesAS592
VIEW FLIGHTS

There may also be different routes to Ontario International, by an alternative nearby airport. Please see details below.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Olympia to Ontario01,503 km (934 miles)2 Hours 35 Minutes

Don’t forget that flight regulations are getting tight so we recommend you leave plenty of time to get through customs at Seattle-Tacoma International.

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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 £34.95 ($47 €40.41)
£34.95
$47 | €40.41
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 £79.58 ($107 €91.99)
£79.58
$107 | €91.99
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 Connection, Frontier, 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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