Flights from Seattle Airport SEA to Ontario Airport ONT

We've found the cheapest flights to Ontario

Returns from £54.37

One-way from £23.19

A variety of 11 airline companies have direct flights to Ontario International to Seattle-Tacoma International, Solairus Aviation, Frontier, Virgin Atlantic, Jet Linx Aviation, Alaska Horizon, Korean Air, KLM, Alaska Airlines, Qatar Airways, Delta Connection and Hawaiian Airlines. 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
Hawaiian Airlines544554507:2023:59VIEW FLIGHTS
Qatar Airways322343314:4221:26VIEW FLIGHTS
Delta Connection333332307:4519:55VIEW FLIGHTS
Alaska Airlines322332307:2021:26VIEW FLIGHTS
Korean Air222222214:0522:42VIEW FLIGHTS
KLM222222214:0522:42VIEW FLIGHTS
Virgin Atlantic111111119:5522:42VIEW FLIGHTS
Jet Linx Aviation111111114:4217:21VIEW FLIGHTS
Alaska Horizon111111114:4214:48VIEW FLIGHTS
Frontier000100112:2912:29VIEW FLIGHTS
Solairus Aviation0000010VIEW FLIGHTS

Hawaiian Airlines offer the most direct flights from Seattle-Tacoma International to Ontario International with an average of 32 flights a week. The earliest flights are operated at 07:20 and the latest flights operated at 23:59 and the most common flight numbers are HA6324, HA6493, HA6503 and HA6511

For more details regarding Hawaiian Airlines flight information and bookings you can visit them at hawaiianair.com

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
07:20
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6511
07:45
AirlineFlightNo
Delta ConnectionDL4070
09:53
AirlineFlightNo
Hawaiian AirlinesHA6667
14:05
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:48
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
Alaska HorizonAS2314
17:28
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR3355
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:26
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Tuesday
07:45
AirlineFlightNo
Delta ConnectionDL4070
10:25
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
12:58
AirlineFlightNo
Hawaiian AirlinesHA6511
14:05
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:48
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
Alaska HorizonAS2314
17:28
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR3355
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Wednesday
07:45
AirlineFlightNo
Delta ConnectionDL4070
10:25
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
12:58
AirlineFlightNo
Hawaiian AirlinesHA6511
14:05
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:48
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
Alaska HorizonAS2314
17:28
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR3355
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
07:20
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6511
07:45
AirlineFlightNo
Delta ConnectionDL4070
09:53
AirlineFlightNo
Hawaiian AirlinesHA6667
12:29
AirlineFlightNo
FrontierF93163
14:05
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:48
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
Alaska HorizonAS2314
17:28
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR3355
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:26
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
07:20
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6511
07:45
AirlineFlightNo
Delta ConnectionDL4070
09:53
AirlineFlightNo
Hawaiian AirlinesHA6667
14:05
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
14:42
AirlineFlightNo
Hawaiian AirlinesHA6324
Qatar AirwaysQR2074
Jet Linx AviationJL6388
Alaska HorizonAS2119
17:28
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR2105
Qatar AirwaysQR3355
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:26
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Saturday
08:35
AirlineFlightNo
Korean AirKE3070
KLMKL6284
Delta ConnectionDL4031
10:25
AirlineFlightNo
Alaska AirlinesAS1097
Hawaiian AirlinesHA6667
11:30
AirlineFlightNo
Solairus AviationTWY201
12:58
AirlineFlightNo
Hawaiian AirlinesHA6511
14:48
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
Alaska HorizonAS2314
18:30
AirlineFlightNo
Alaska AirlinesAS1003
Hawaiian AirlinesHA6493
Qatar AirwaysQR4277
19:55
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:04
AirlineFlightNo
Qatar AirwaysQR3355
VIEW FLIGHTS
Sunday
07:20
AirlineFlightNo
Alaska AirlinesAS1097
07:45
AirlineFlightNo
Delta ConnectionDL4070
09:53
AirlineFlightNo
Hawaiian AirlinesHA6511
Hawaiian AirlinesHA6667
12:29
AirlineFlightNo
FrontierF93163
14:05
AirlineFlightNo
Delta ConnectionDL4031
14:48
AirlineFlightNo
Alaska HorizonAS2314
16:54
AirlineFlightNo
Korean AirKE3070
KLMKL6284
17:21
AirlineFlightNo
Hawaiian AirlinesHA6503
Qatar AirwaysQR2105
Jet Linx AviationJL6388
17:28
AirlineFlightNo
Alaska AirlinesAS1003
19:55
AirlineFlightNo
Delta ConnectionDL4027
20:00
AirlineFlightNo
Hawaiian AirlinesHA6493
Qatar AirwaysQR3355
Qatar AirwaysQR4277
21:26
AirlineFlightNo
Alaska AirlinesAS1040
22:42
AirlineFlightNo
Korean AirKE3106
KLMKL6282
Virgin AtlanticVS5376
23:59
AirlineFlightNo
Hawaiian AirlinesHA6811
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.

Looking for the best deals on rental cars?

Search for cheap vehicle hire in Seattle

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 £23.19 ($29 €27.91)
£23.19
$29 | €27.91
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 £54.37 ($68 €65.43)
£54.37
$68 | €65.43
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

Was your flight delayed or cancelled?

Was your flight delayed or cancelled?

You may be eligible to receive up to 600 EUR compensation per person in your party.

Claim Now!

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, Alaska Horizon, Delta Connection, Frontier, Hawaiian Airlines, Jet Linx Aviation, KLM, Korean Air, Qatar Airways, Solairus Aviation, Virgin Atlantic.
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.

Alternative Airports in United States with Connections from Seattle Airport

Planning a Holiday or Business Trip?

Find cheap car hire deals at SEA

Useful Information about Seattle Airport

Lounges at Seattle Airport

See all the airport lounges, locations and opening times available at Seattle Airport

View...
Eating and Drinking at Seattle Airport

See all bars and restaurants at Seattle Airport, including locations and if they are before or after check-in

View...
Duty Free Shopping at Seattle Airport

See all shops available at Seattle Airport - plan your duty free shopping in advance

View...
Seattle Tourist Attractions

From wine tasting to a coffee & chocolate walking tour, just some of the things to see in Seattle..

View...