Flights from Seattle Airport SEA to Ontario Airport ONT

We've found the cheapest flights to Ontario

Returns from £102.32

One-way from £58.16

A variety of 12 airline companies have direct flights to Ontario International to Seattle-Tacoma International, Japan Airlines, Volaris, Virgin Atlantic, SAS, Frontier, Qatar Airways, KLM, Korean Air, Delta Connection, WestJet, Hawaiian Airlines and Alaska 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
Alaska Airlines455544500:1521:30VIEW FLIGHTS
WestJet666433314:2022:46VIEW FLIGHTS
Hawaiian Airlines455543500:1521:30VIEW FLIGHTS
Delta Connection444433407:3019:55VIEW FLIGHTS
Korean Air222222214:2022:46VIEW FLIGHTS
Qatar Airways222211200:1521:30VIEW FLIGHTS
KLM222211214:2019:55VIEW FLIGHTS
Volaris111111116:3016:36VIEW FLIGHTS
Virgin Atlantic111111119:5519:55VIEW FLIGHTS
SAS111111119:5519:55VIEW FLIGHTS
Frontier111111113:4213:50VIEW FLIGHTS
Japan Airlines111101115:2518:04VIEW FLIGHTS

Alaska 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 00:15 and the latest flights operated at 21:30 and the most common flight numbers are AS1040, AS1086, AS1118 and AS1254

For more details regarding Alaska Airlines flight information and bookings you can visit them at alaskaair.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
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlightNo
FrontierF93163
14:20
AirlineFlightNo
Korean AirKE3070
WestJetWS7644
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlightNo
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
16:30
AirlineFlightNo
VolarisY42603
17:10
AirlineFlightNo
WestJetWS6437
WestJetWS7523
18:04
AirlineFlightNo
Qatar AirwaysQR3308
19:55
AirlineFlightNo
Korean AirKE3106
SASSK3676
WestJetWS7434
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlightNo
WestJetWS7637
WestJetWS8530
VIEW FLIGHTS
Tuesday
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlightNo
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlightNo
FrontierF93163
14:20
AirlineFlightNo
Korean AirKE3070
WestJetWS6437
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlightNo
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlightNo
VolarisY42603
17:10
AirlineFlightNo
WestJetWS7283
WestJetWS7644
19:55
AirlineFlightNo
Korean AirKE3106
SASSK3676
WestJetWS7637
WestJetWS8530
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlightNo
WestJetWS7223
VIEW FLIGHTS
Wednesday
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlightNo
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlightNo
FrontierF93163
14:20
AirlineFlightNo
Korean AirKE3070
WestJetWS7283
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlightNo
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlightNo
VolarisY42603
17:10
AirlineFlightNo
WestJetWS6437
WestJetWS7523
19:55
AirlineFlightNo
Korean AirKE3106
SASSK3676
WestJetWS7223
WestJetWS8530
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
22:46
AirlineFlightNo
WestJetWS7434
VIEW FLIGHTS
Thursday
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlightNo
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlightNo
FrontierF93163
14:20
AirlineFlightNo
Korean AirKE3070
WestJetWS7523
KLMKL6208
Delta ConnectionDL4031
15:25
AirlineFlightNo
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
16:30
AirlineFlightNo
VolarisY42603
17:10
AirlineFlightNo
WestJetWS7283
19:55
AirlineFlightNo
Korean AirKE3106
SASSK3676
WestJetWS7223
WestJetWS7434
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
00:15
AirlineFlightNo
Alaska AirlinesAS1040
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
10:47
AirlineFlightNo
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:50
AirlineFlightNo
FrontierF93163
16:30
AirlineFlightNo
VolarisY42603
19:55
AirlineFlightNo
Korean AirKE3070
Korean AirKE3106
SASSK3676
WestJetWS7434
WestJetWS7523
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
22:46
AirlineFlightNo
WestJetWS7083
VIEW FLIGHTS
Saturday
07:30
AirlineFlightNo
Delta ConnectionDL3593
10:47
AirlineFlightNo
Alaska AirlinesAS1278
Hawaiian AirlinesHA6803
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
Hawaiian AirlinesHA6813
13:42
AirlineFlightNo
VolarisY42603
FrontierF93163
15:20
AirlineFlightNo
Alaska AirlinesAS1086
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:55
AirlineFlightNo
Korean AirKE3070
SASSK3676
WestJetWS7083
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
22:46
AirlineFlightNo
Korean AirKE3106
WestJetWS7394
WestJetWS7523
VIEW FLIGHTS
Sunday
00:15
AirlineFlightNo
Hawaiian AirlinesHA6811
Qatar AirwaysQR4277
07:30
AirlineFlightNo
Delta ConnectionDL3593
08:27
AirlineFlightNo
Alaska AirlinesAS1254
10:47
AirlineFlightNo
Alaska AirlinesAS1278
11:05
AirlineFlightNo
Hawaiian AirlinesHA6814
11:33
AirlineFlightNo
Delta ConnectionDL3589
12:00
AirlineFlightNo
Alaska AirlinesAS1118
13:26
AirlineFlightNo
Hawaiian AirlinesHA6803
13:42
AirlineFlightNo
FrontierF93163
14:20
AirlineFlightNo
Delta ConnectionDL4031
14:46
AirlineFlightNo
Hawaiian AirlinesHA6813
15:25
AirlineFlightNo
Alaska AirlinesAS1086
16:36
AirlineFlightNo
VolarisY42603
17:10
AirlineFlightNo
WestJetWS7434
KLMKL6208
18:04
AirlineFlightNo
Hawaiian AirlinesHA6812
Japan AirlinesJL6388
Qatar AirwaysQR3308
19:55
AirlineFlightNo
Korean AirKE3070
SASSK3676
WestJetWS7083
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:30
AirlineFlightNo
Alaska AirlinesAS1040
22:46
AirlineFlightNo
Korean AirKE3106
WestJetWS7394
VIEW FLIGHTS

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 £58.16 ($79 €67.50)
£58.16
$79 | €67.50
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 £102.32 ($139 €118.76)
£102.32
$139 | €118.76
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, 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.

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...