Flights from Seattle Airport SEA to Ontario Airport ONT

We've found the cheapest flights to Ontario

Returns from £102.26

One-way from £64.47

A variety of 9 airline companies have direct flights to Ontario International to Seattle-Tacoma International, WestJet, Virgin Atlantic, Hawaiian Airlines, Korean Air, Jet Linx Aviation, Qatar Airways, KLM, 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 Airlines333443307:0021:24VIEW FLIGHTS
KLM222222114:3019:50VIEW FLIGHTS
Qatar Airways222112107:0023:59VIEW FLIGHTS
Korean Air111111114:3017:15VIEW FLIGHTS
Jet Linx Aviation111111116:2123:59VIEW FLIGHTS
WestJet100112114:3017:15VIEW FLIGHTS
Virgin Atlantic111111019:5019:50VIEW FLIGHTS
Hawaiian Airlines330000007:0023:59VIEW 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 DL3709, DL4031, DL4070 and DL4170

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
07:00
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
08:25
AirlineFlightNo
Delta ConnectionDL4070
09:39
AirlineFlightNo
Qatar AirwaysQR2011
10:54
AirlineFlightNo
Delta ConnectionDL4170
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:37
AirlineFlightNo
Alaska AirlinesAS592
17:15
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
18:13
AirlineFlightNo
Hawaiian AirlinesHA6829
Jet Linx AviationJL6388
19:50
AirlineFlightNo
KLMKL6269
Delta ConnectionDL3709
Virgin AtlanticVS5470
21:24
AirlineFlightNo
Alaska AirlinesAS489
23:59
AirlineFlightNo
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
VIEW FLIGHTS
Tuesday
07:00
AirlineFlightNo
Alaska AirlinesAS1364
Hawaiian AirlinesHA6836
Qatar AirwaysQR2011
08:25
AirlineFlightNo
Delta ConnectionDL4070
10:54
AirlineFlightNo
Delta ConnectionDL4170
14:30
AirlineFlightNo
Delta ConnectionDL4031
15:37
AirlineFlightNo
Alaska AirlinesAS592
17:15
AirlineFlightNo
Korean AirKE3070
KLMKL6270
18:13
AirlineFlightNo
Hawaiian AirlinesHA6829
19:50
AirlineFlightNo
KLMKL6269
Delta ConnectionDL3709
Virgin AtlanticVS5470
21:24
AirlineFlightNo
Alaska AirlinesAS489
23:59
AirlineFlightNo
Hawaiian AirlinesHA6828
Qatar AirwaysQR3331
Jet Linx AviationJL6388
VIEW FLIGHTS
Wednesday
07:05
AirlineFlightNo
Alaska AirlinesAS1364
08:25
AirlineFlightNo
Delta ConnectionDL4070
09:45
AirlineFlightNo
Qatar AirwaysQR2017
10:54
AirlineFlightNo
Delta ConnectionDL4170
11:38
AirlineFlightNo
Alaska AirlinesAS728
14:30
AirlineFlightNo
Korean AirKE3070
KLMKL6270
Delta ConnectionDL4031
19:50
AirlineFlightNo
Alaska AirlinesAS489
KLMKL6269
Qatar AirwaysQR3331
Jet Linx AviationJL6388
Delta ConnectionDL3709
Virgin AtlanticVS5470
VIEW FLIGHTS
Thursday
07:05
AirlineFlightNo
Alaska AirlinesAS1364
Qatar AirwaysQR2017
08:25
AirlineFlightNo
Delta ConnectionDL4070
10:54
AirlineFlightNo
Delta ConnectionDL4170
11:38
AirlineFlightNo
Alaska AirlinesAS728
14:30
AirlineFlightNo
Korean AirKE3070
KLMKL6270
Delta ConnectionDL4031
16:21
AirlineFlightNo
Alaska AirlinesAS592
Jet Linx AviationJL6388
17:15
AirlineFlightNo
WestJetWS8373
19:50
AirlineFlightNo
KLMKL6269
Delta ConnectionDL3709
Virgin AtlanticVS5470
21:17
AirlineFlightNo
Alaska AirlinesAS489
VIEW FLIGHTS
Friday
07:05
AirlineFlightNo
Alaska AirlinesAS1364
08:25
AirlineFlightNo
Delta ConnectionDL4070
10:54
AirlineFlightNo
Delta ConnectionDL4170
11:38
AirlineFlightNo
Alaska AirlinesAS728
14:30
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
Delta ConnectionDL4031
16:21
AirlineFlightNo
Alaska AirlinesAS592
Jet Linx AviationJL6388
19:50
AirlineFlightNo
KLMKL6269
Delta ConnectionDL3709
Virgin AtlanticVS5470
21:17
AirlineFlightNo
Alaska AirlinesAS489
23:59
AirlineFlightNo
Qatar AirwaysQR3331
VIEW FLIGHTS
Saturday
07:05
AirlineFlightNo
Alaska AirlinesAS1364
08:25
AirlineFlightNo
Delta ConnectionDL4070
09:45
AirlineFlightNo
Qatar AirwaysQR2017
10:54
AirlineFlightNo
Delta ConnectionDL4170
11:38
AirlineFlightNo
Alaska AirlinesAS728
14:30
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
Delta ConnectionDL4031
19:50
AirlineFlightNo
Alaska AirlinesAS489
KLMKL6269
Qatar AirwaysQR3331
Jet Linx AviationJL6388
Delta ConnectionDL3709
Virgin AtlanticVS5470
22:37
AirlineFlightNo
WestJetWS7147
VIEW FLIGHTS
Sunday
09:45
AirlineFlightNo
Alaska AirlinesAS1364
Qatar AirwaysQR2017
11:13
AirlineFlightNo
Delta ConnectionDL4070
13:39
AirlineFlightNo
Delta ConnectionDL4170
14:32
AirlineFlightNo
Alaska AirlinesAS728
17:15
AirlineFlightNo
Korean AirKE3070
WestJetWS8373
KLMKL6270
Delta ConnectionDL4031
19:05
AirlineFlightNo
Alaska AirlinesAS592
Jet Linx AviationJL6388
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 Hawaiian 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 £64.47 ($87 €74.21)
£64.47
$87 | €74.21
Check Latest Price
DIRECT Delta
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 £102.26 ($138 €117.72)
£102.26
$138 | €117.72
Check Latest Price
1+ STOP(S)
What is the cheapest flight one way from Seattle SEA to Ontario ONT?
The cheapest flight one way from Seattle SEA to Ontario ONT is £54.83 ($74 €63.12)
£54.83
$74 | €63.12
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, Hawaiian Airlines, Jet Linx Aviation, KLM, Korean Air, Qatar Airways, Virgin Atlantic, 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...