SEA to ONT (Seattle to Ontario) Flights

Last Minute Flights from SEA to ONT

Best airfare and ticket deals for SEA to ONT flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
SEALos AngelesApril 27 to April 30$118
*Prices include taxes and fees

Cheapest SEA to ONT Flights

Best airfare and ticket deals for SEA to ONT flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
SEALos AngelesMay 21 to May 22$78
SEALos AngelesJune 1 to June 12$170
SEALos AngelesJune 11 to June 11$171
PAELos AngelesMay 8 to May 14$523
*Prices include taxes and fees
SEA to ONT Flight Details
Origin airport
Seattle - Tacoma Intl.
Origin airport IATA code
SEA
Destination airport
Los Angeles - Ontario Intl.
Destination airport IATA code
ONT
Distance
956 mi

Frequently asked questions

Which airlines with flights from SEA to ONT allow free cancellation due to COVID-19?
Once all available flight options are shown for your desired travel dates, click the “No change fee” box underneath the “Flexible change policies” filter. You’ll see your options from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to ONT. Remember to check the rules and regulations regarding COVID-19 cancellations before you lock in your flight.
What airlines fly direct from Sea-Tac Airport to ONT?
Say nope to lengthy stopovers and jet straight from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to ONT with Alaska Airlines (AS). This carrier operates 108 nonstop services on this route every month. You can also choose from 91 nonstop monthly flights provided by Delta (DL). No changeovers? No sweat.
How many flights are there from SEA to ONT?
Around 6 per day. If you’re in a big hurry to head to Los Angeles, see if you can find a good last-minute deal from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) and then lock it in quick!
How long does it take to fly from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.)?
The flight will take approximately 2 hours and 35 minutes from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) — just long enough to devour a few chapters of a book!
What is the flight distance from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.)?
Around 960 miles (1550 km) separates Seattle and Los Angeles, and it’s classed as a medium-haul flight. No quick jaunt yet no high-altitude marathon, pack whatever you need to help make your flight a comfortable one.
How many morning flights are there from SEA to ONT?
Every week, 20 flights journey from SEA to ONT before noon. Alaska Airlines (AS) offers 13 of these, with the earliest departing at 1:44PM.
How many afternoon flights are there from SEA to ONT?
Ditch the super early check in and choose one of the 26 weekly afternoon and evening flights from SEA to ONT. Afternoon and evening services advertised by Delta (DL) leave from 2:52AM. In total, this airline operates 14 weekly flights departing after midday.
What is the earliest departure time out of Seattle to Los Angeles?
6:44AM is the earliest scheduled flight out of SEA, landing at ONT at 9:14AM. Save time in the morning by having your bags packed and ready to be bundled into your ride.
What is the latest departure time out of Seattle to Los Angeles?
From SEA, the latest flight you can catch jets out at 8:56PM and comes in for landing at ONT at 11:21PM. If you’re not a fan of early starts, this is the flight for you!
What is the average price from Seattle to Los Angeles?
Round-trip journeys between SEA and ONT start from about $78. When you’re ready book your trip, we’ll help you find the best price around. This price was available on Flights.com within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Seattle to Ontario Flight Schedule

CarrierFlightDepart SEAArrive ONTSun
4/21		Mon
4/22		Tue
4/23		Wed
4/24		Thu
4/25		Fri
4/26		Sat
4/27		Stops
AS125407:00 am09:33 amCheck FareCheck Fare
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DL402007:55 am10:40 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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DL401610:30 am01:12 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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AS109701:15 pm03:48 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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DL403202:20 pm05:00 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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AS108604:31 pm07:04 pmCheck FareCheck Fare
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DL403107:59 pm10:40 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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AS104009:26 pm11:59 pmCheck FareCheck Fare
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AS345207:00 am09:33 am
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AS108806:55 pm09:28 pm
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AS205507:00 am09:33 am
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Seattle to Ontario Flights

Whether it’s for an obligation or the sake of your sanity, sometimes you need to get away. Maybe you need flights from Seattle to Ontario to attend your cousin’s wedding, to pitch a business idea to your boss, or perhaps simply to treat yourself to a mini vacation. Regardless of the reasons behind packing your bags and needing to find the cheapest flights from SEA to ONT, we’ve got you covered here at Flights.com.

We present you with some of the hottest deals on airfare so stop that Google flights search. We want you to spend less on your flight from Seattle to Ontario, so you can spend more during your getaway. With Flights.com, you’ll find it simple to land airline tickets with itineraries matching your travel schedule. What’s more, we provide you with all the information you need to confidently make reservations on your family, business, or personal trip.