NZ$369 Cheap Flights Seattle to Ontario Intl. Airport (SEA-ONT)
Popular airlines from Seattle-Tacoma International Airport (SEA) to Ontario Intl. Airport (ONT)
Alaska AirlinesAlaska Airlines
Frontier AirlinesFrontier Airlines
UnitedUnited
DeltaDelta
Southwest AirlinesSouthwest Airlines
American AirlinesAmerican Airlines
Be in the knowGet alerts if flight prices drop or rise*
Book smarterSave up to 35% on select hotels after you book a flight*
Cheap Flights from Seattle to Ontario (SEA-ONT)
Book with confidence
SEA to ONT Flights
Ready to have the time of your life? When you use Expedia.co.nz to book cheap flights from Seattle to Ontario, you can experience all of the attractions this city is famous for, or escape the crowds and explore the outskirts on your own. Our amazing deals on airfare help you save big on tickets, so you can spend more of your hard-earned money enjoying local entertainment options. Even if you seek to score a seat on one of the last-minute SEA to ONT flights, you’ll still save a bundle when compared to the competition.
See for yourself how simple it is to book the holiday of your dreams to Ontario by using our helpful search engine today. We have the largest inventory of flights on the internet, and our intuitive tools make it easy to find affordable airfare at any time of year.
Prefer to fly with a particular airline? Our extensive network of travel partners ensures that you can travel with whichever carrier you prefer. So if you’ve been searching for cheap flights to Ontario from Seattle, Expedia.co.nz has exactly what you’re looking for. As the world’s leader in travel, we’re committed to helping you get the best rates around.
Frequently Asked Questions
How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to ONT?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Sea-Tac Airport and Los Angeles - Ontario Intl. Airport (ONT) start from NZ$769. Make your booking ASAP to score the best price for your big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Los Angeles - Ontario Intl. Airport (ONT)?
The majority of flights can be cancelled online, but every airline has its own set of terms and conditions. If you do need to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from SEA to Los Angeles - Ontario Intl. Airport (ONT) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to ONT?
The flying distance between Sea-Tac Airport and Los Angeles - Ontario Intl. Airport (ONT) is 1 550 kilometres. Close your eyes or get stuck into a book and the journey will zip on by.
Which airlines fly direct from Sea-Tac Airport to Ontario Airport?
One airline that services the route from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) is Alaska Airlines (AS). It offers 117 flights every month. Another carrier servicing this route is Delta Air Lines (DL). You'll have 86 flights each month to select from.
Are SEA to ONT flight tickets cheaper when they're purchased at the last minute?
It is possible to nab a fantastic last-minute deal from SEA to Ontario Airport, but it can also be hit-or-miss. As many airlines release prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a bargain. Expedia compares carrier prices and updates flight deals often, so you can rest easy knowing you're always getting the latest offers.
Travel information
Origin airport | Seattle-Tacoma International Airport |
|---|---|
Destination airport | Ontario Intl. Airport |
Distance | 1,539 km away |
Airlines serving | Alaska Airlines, Frontier Airlines, United, Delta, Southwest Airlines, American Airlines |
Popular airline | Alaska Airlines |
Return price | NZ$769 |
Average flight time | 3 hours 1 min |