CA $995 Cheap Flights from Adelaide (ADL) to Seattle (SEA)

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.

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.

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.

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.

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!

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.