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

We've found the cheapest flights to Ontario

Returns from £85.44

One-way from £27.98

Airliners including Volaris, Frontier, Japan Airlines, Aeromexico, Qatar Airways, Virgin Atlantic, Korean Air, Hawaiian Airlines, Alaska Airlines, KLM and Delta Connection 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
KLM333333308:1522:24VIEW FLIGHTS
Delta Connection333333308:1519:40VIEW FLIGHTS
Hawaiian Airlines322331308:0121:23VIEW FLIGHTS
Alaska Airlines322331308:0121:23VIEW FLIGHTS
Virgin Atlantic222222208:1522:24VIEW FLIGHTS
Korean Air222222216:4422:24VIEW FLIGHTS
Qatar Airways211221215:5021:23VIEW FLIGHTS
Aeromexico111111108:1511:02VIEW FLIGHTS
Japan Airlines111110115:5018:23VIEW FLIGHTS
Volaris100110112:4615:25VIEW FLIGHTS
Frontier100110112:4612:46VIEW FLIGHTS

KLM is the most popular airliners who operate this route. They have around 21 a week with times that vary between 08:15 and 22:24.

To book your flight you can visit KLM on their website klm.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
08:01
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
Virgin AtlanticVS3687
12:46
AirlineFlight  No
VolarisY42603
FrontierF93163
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS1086
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
18:23
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:23
AirlineFlight  No
Alaska AirlinesAS1003
Hawaiian AirlinesHA6667
Qatar AirwaysQR4277
VIEW FLIGHTS
Tuesday
08:01
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
Virgin AtlanticVS3687
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS1086
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
18:23
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Wednesday
08:01
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
Virgin AtlanticVS3687
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS1086
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
VIEW FLIGHTS
Thursday
08:01
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
11:02
AirlineFlight  No
Virgin AtlanticVS3687
12:46
AirlineFlight  No
VolarisY42603
FrontierF93163
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS1086
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
18:23
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:23
AirlineFlight  No
Alaska AirlinesAS1003
Hawaiian AirlinesHA6667
Qatar AirwaysQR4277
VIEW FLIGHTS
Friday
08:01
AirlineFlight  No
Alaska AirlinesAS1254
Hawaiian AirlinesHA6814
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
Virgin AtlanticVS3687
12:46
AirlineFlight  No
VolarisY42603
FrontierF93163
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:50
AirlineFlight  No
Alaska AirlinesAS1086
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
18:23
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:23
AirlineFlight  No
Alaska AirlinesAS1003
Hawaiian AirlinesHA6667
Qatar AirwaysQR4277
VIEW FLIGHTS
Saturday
08:15
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Delta ConnectionDL4070
Virgin AtlanticVS3687
13:59
AirlineFlight  No
Korean AirKE3070
KLMKL6208
Delta ConnectionDL4031
19:40
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Delta ConnectionDL4027
Virgin AtlanticVS5376
21:23
AirlineFlight  No
Alaska AirlinesAS1003
23:59
AirlineFlight  No
Hawaiian AirlinesHA6667
Qatar AirwaysQR4277
VIEW FLIGHTS
Sunday
08:01
AirlineFlight  No
Alaska AirlinesAS1254
08:15
AirlineFlight  No
Delta ConnectionDL4070
10:39
AirlineFlight  No
Hawaiian AirlinesHA6814
11:02
AirlineFlight  No
AeromexicoAM4248
KLMKL7189
Virgin AtlanticVS3687
12:46
AirlineFlight  No
FrontierF93163
13:59
AirlineFlight  No
Delta ConnectionDL4031
15:25
AirlineFlight  No
VolarisY42603
15:50
AirlineFlight  No
Alaska AirlinesAS1086
16:44
AirlineFlight  No
Korean AirKE3070
KLMKL6208
18:23
AirlineFlight  No
Hawaiian AirlinesHA6668
Japan AirlinesJL6388
Qatar AirwaysQR2105
19:40
AirlineFlight  No
Delta ConnectionDL4027
21:23
AirlineFlight  No
Alaska AirlinesAS1003
Hawaiian AirlinesHA6667
Qatar AirwaysQR4277
22:24
AirlineFlight  No
Korean AirKE3106
KLMKL6206
Virgin AtlanticVS5376
VIEW FLIGHTS

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.

Don't forget to book your car rental!

Find the cheapest car rentals in Ontario California

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 £27.98 ($37 €32.57)
£27.98
$37 | €32.57
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 £85.44 ($113 €99.47)
£85.44
$113 | €99.47
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): Aeromexico, Alaska Airlines, Delta Connection, Frontier, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Qatar Airways, Virgin Atlantic, Volaris.
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.

Other Airports Connecting To Ontario Airport in united states

Don't forget to book your hire car!

Find the cheapest car rentals in Ontario California, United States

Useful Information about Ontario Airport

Lounges at Ontario Airport

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

View...
Eating and Drinking at Ontario Airport

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

View...
Duty Free Shopping at Ontario Airport

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

View...
Ontario Tourist Attractions

Things to see and do in and around Ontario in Canada

View...