Flights from Seattle Airport SEA to Ontario Airport ONT

We've found the cheapest flights to Ontario

Returns from £54.59

One-way from £20.94

A variety of 13 airline companies have direct flights to Ontario International to Seattle-Tacoma International, Solairus Aviation, Delta Air Lines, Volaris, Frontier, WestJet, Virgin Atlantic, Jet Linx Aviation, Qatar Airways, Korean Air, KLM, Hawaiian Airlines, 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 Connection333333208:3020:05VIEW FLIGHTS
Hawaiian Airlines322332308:4323:29VIEW FLIGHTS
Alaska Airlines322332308:4320:55VIEW FLIGHTS
Korean Air222222214:1922:47VIEW FLIGHTS
KLM222222214:1922:47VIEW FLIGHTS
Qatar Airways211221218:3323:29VIEW FLIGHTS
Virgin Atlantic111111120:0522:47VIEW FLIGHTS
Jet Linx Aviation111111118:3318:33VIEW FLIGHTS
WestJet110111114:1917:07VIEW FLIGHTS
Volaris000010110:5110:51VIEW FLIGHTS
Frontier000010110:5110:51VIEW FLIGHTS
Solairus Aviation0000010VIEW FLIGHTS
Delta Air Lines000000120:0520:05VIEW FLIGHTS

Delta Connection offer the most direct flights from Seattle-Tacoma International to Ontario International with an average of 20 flights a week. The earliest flights are operated at 08:30 and the latest flights operated at 20:05 and the most common flight numbers are DL4027, DL4031 and DL4096

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
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
14:19
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:55
AirlineFlightNo
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Tuesday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
14:19
AirlineFlightNo
Korean AirKE3070
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
17:07
AirlineFlightNo
WestJetWS8373
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Wednesday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
14:19
AirlineFlightNo
Korean AirKE3070
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
14:19
AirlineFlightNo
Korean AirKE3070
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
17:07
AirlineFlightNo
WestJetWS8373
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:55
AirlineFlightNo
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Friday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
10:51
AirlineFlightNo
VolarisY42506
FrontierF93163
14:19
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
20:55
AirlineFlightNo
Alaska AirlinesAS489
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Saturday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
11:30
AirlineFlightNo
Solairus AviationTWY201
14:19
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6436
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Sunday
08:30
AirlineFlightNo
Delta ConnectionDL4096
08:43
AirlineFlightNo
Alaska AirlinesAS1364
10:51
AirlineFlightNo
VolarisY42506
FrontierF93163
11:19
AirlineFlightNo
Hawaiian AirlinesHA6836
14:19
AirlineFlightNo
Delta ConnectionDL4031
15:57
AirlineFlightNo
Alaska AirlinesAS592
17:07
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6436
18:33
AirlineFlightNo
Hawaiian AirlinesHA6829
Qatar AirwaysQR3336
Jet Linx AviationJL6388
20:05
AirlineFlightNo
Delta Air LinesDL4027
20:55
AirlineFlightNo
Alaska AirlinesAS489
22:47
AirlineFlightNo
Korean AirKE3106
KLMKL6435
Virgin AtlanticVS5376
23:29
AirlineFlightNo
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
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
Seattle Boeing Field King County to Ontario01,549 km (962 miles)2 Hours 38 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 £20.94 ($28 €23.84)
£20.94
$28 | €23.84
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 £54.59 ($73 €62.15)
£54.59
$73 | €62.15
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, Solairus Aviation, 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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