CA $793 Cheap Flights from Adelaide (ADL) to Seattle (SEA)

View CA $793 flight on Fri, Oct. 24, 2025Opens in a new window

Popular airlines from Adelaide, SA Airport (ADL) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Adelaide (ADL) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $793 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flight from Adelaide to Seattle (ADL - SEA) route information
Origin airport
Adelaide
Destination airport
Seattle - Tacoma Intl.
Distance
13340 km

Adelaide to Seattle Flights

The easy way to book your flights from Adelaide to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Adelaide whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Adelaide to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Adelaide, ADL to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Adelaide to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Adelaide currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Adelaide 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Frequently asked questions

How much is a flight from Adelaide Airport (ADL) to Sea-Tac Airport?
Start packing your suitcase, because round-trip journeys from ADL to SEA start from . That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Adelaide Airport to Sea-Tac Airport?
We understand that circumstances change unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from ADL to Sea-Tac Airport that have flexible change policies?
Flights from Adelaide Airport to Sea-Tac Airport with flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to cover the cost difference between the two flights, without any added fees to worry about.
How far is the flight from Adelaide Airport (ADL) to Sea-Tac Airport?
The distance is around 13,400 kilometres, so fill your carry-on luggage with everything you need to make your journey comfortable. Wondering what to take on board your Adelaide to SeaTac flight? A neck pillow, earplugs and a sleep mask are among the essentials.
Which airlines fly direct from Adelaide Airport to SEA?
You won't find any airlines operating directly between ADL and SEA, so be prepared to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!
Are ADL to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Adelaide Airport to Sea-Tac Airport at the last minute could be your ticket to a fantastic deal. However, you might miss out on a flight altogether! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

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