AED530 Cheap Flights from Ontario (ONT) to Seattle (SEA)

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Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Ontario to Seattle (ONT-SEA)

Prices were available within the past 7 days and start at AED530 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Flights from Ontario (ONT) to Seattle (SEA)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
1530 km
Average flight time
2 hours 56 mins

Ontario to Seattle Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Ontario to Seattle offer the perfect respite. Not only does exploring Seattle provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Ontario to Seattle may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Seattle are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Seattle more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is AED530 now!

Frequently asked questions

How long does it take to fly from ONT to Sea-Tac Airport?
A direct flight with Delta Air Lines takes approximately 2 hours and 52 minutes. Jump on the 5:40PM flight from ONT and come in to land at Sea-Tac Airport at 8:32PM. Grab an epic deal on this and other routes when you book with Expedia.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Sea-Tac Airport last minute?
When it's time to book your flights, it's always better to be prepared. While it's possible to pick up a deal on an ONT to Seattle - Tacoma Intl. Airport (SEA) flight at the last minute, tickets usually don't get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days in advance. For international travel it's between three and four months.
What airline has the least delays from Ontario Airport to Sea-Tac Airport?
If you'd rather not be stuck at your gate for hours — or worse, your vacation plans shelved due to a flight delay — travel with Alaska Airlines. Around 86% of its Los Angeles - Ontario Intl. Airport (ONT) to Seattle - Tacoma Intl. Airport (SEA) services touch down on time. You can review your flight status before making your way to the airport through the Expedia App. It'll also provide you with real-time alerts about other key info, such as gate number changes and how to get to your hotel. Everything you need to know is in your pocket with this handy travel companion.
What airports do you fly into for Seattle from Ontario?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to select from, flying from Ontario to Seattle is a piece of cake. The city's main hub, Seattle - Tacoma Intl. Airport (SEA), is around 19 kilometers south of the downtown area. As well as ticket costs, consider factors like public transportation options from the airport and the distance to your hotel before deciding where you'll get off the plane. Get your Seattle adventure off to a fun start by checking out Space Needle and Pike Place Market.
What are the most popular departure times for flights from ONT to Seattle - Tacoma Intl. Airport (SEA)?
Between 7:00 AM - 8:00 AM is when you'll find the most Delta Air Lines flights departing Ontario Airport to Sea-Tac Airport. Our handy tip? Leave earlier in the day. With air traffic yet to build up, your chances of jumping on a delay-free flight are better.
Can I change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Sea-Tac Airport?
Sometimes life gets in the way of plans, so Expedia is here to help make things as simple as possible. To start, access your ONT to SEA itinerary through the Expedia Trips portal and browse the fare conditions and rules about what changes you can make. If you booked your plane ticket in the last 24 hours, some airlines will let you cancel without charge and organize new flights. If you bought your fare more than 24 hours ago, get in touch with us via our Customer Service portal to see how we can assist.

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