Cheap Flights from Seattle (SEAA) to Adelaide (ADL)

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Find the cheapest month or even day of the year to fly to Adelaide

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Flight deals from Seattle to Adelaide

Looking for a cheap last-minute deal or the best return flight from Seattle to Adelaide? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Adelaide

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Adelaide flights are currently cheapest in June.

Seattle to Adelaide: Alternative routes

Compare routes from Seattle to Adelaide below. You may find an airport to fly into that's cheaper, faster, or easier than Adelaide.

Seattle to Adelaide: Flight information

The things to know before you go.
Cheapest flight found$1,641
Cheapest month to flyJune

Finding cheap flights from Seattle to Adelaide: Frequently asked questions

The best price we found for a return flight from Seattle to Adelaide is $1,641. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Adelaide. But we found flights with one stop from $1,641.
As of May 2025, there are no flights flying from Seattle to Adelaide.
The cheapest month to fly from Seattle to Adelaide is usually May 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Adelaide Airport on Thursday, 5 June 2025.
No airlines currently offer direct flights between Seattle and Adelaide Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Adelaide but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Adelaide is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Adelaide is Hawaiian Airlines .

Flying from Seattle to Adelaide Airport (ADL): what you need to know

  • Seattle is home to two main airports where you can kick off your travels. Explore your options for booking a flight from Seattle to Adelaide Airport (ADL) flying out of Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base (LKE).

  • Adelaide is 17 hours 30 minutes ahead of Seattle. Adelaide Airport is located in Adelaide, which operates on the UTC+10:30 timezone.

  • For stress-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your flight from Seattle to ADL.

  • With more people on the move during busy periods like July, be at your terminal even earlier. Two hours for domestic flights and as much as four for international journeys will allow for extra wait times. Remember things also get busy during major holidays like Christmas.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • We make it a piece of cake to book a flight from Seattle to ADL that includes a stopover. To see all your options departing from Seattle-Tacoma International Airport (SEA), deselect 'Direct flights only.' Then, simply select a flight that has a stop long enough to explore your chosen city. Major stopovers between SEA and ADL include:

    • Changi International Airport (SIN)

    • Dubai Airport (DXB)

    • Hamad International Airport (DOH)

  • The distance from central Seattle to SEA is about 23 kilometres. Use Google Maps for the fastest route, whether you prefer to drive or use public transport.

  • Catching an early flight from Seattle to Adelaide Airport? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by picking one of these stays near Seattle-Tacoma International Airport:

Lake Union Sea Plane Base (LKE)

  • Split up your flight from Seattle to Adelaide Airport with a stop so you can recharge or perhaps go somewhere you've never been before. Top stopovers between Lake Union Sea Plane Base and ADL are:

    • Changi International Airport (SIN)

    • Hamad International Airport (DOH)

    • Dubai Airport (DXB)

  • With public transport, you can travel from central Seattle to LKE in about 23 minutes. The terminal is roughly 3 kilometres away, and making the journey by car takes approximately 11 minutes.

  • Want to treat yourself to an extra night away before your flight from Seattle to ADL? Check in to a hotel near Lake Union Sea Plane Base before your break officially starts. Here's where you can stay:

About Adelaide Airport (ADL)

Getting from Adelaide Airport (ADL) to central Adelaide

  • Adelaide Airport is approximately 8 kilometres from central Adelaide. With your own car rental or if you're catching a cab, the drive is around 17 minutes.

  • If you're travelling by public transport, expect a journey time of about 49 minutes.

How to find the cheapest flights from Seattle to Adelaide Airport (ADL)

  • For a one-way ticket from Seattle to Adelaide Airport, $878 is the best price we've seen. You can also book a return flight from just $1,641. These are currently the lowest fares and may vary depending on availability.

  • To pick up flight tickets from Seattle to ADL, book early. Airlines tend to offer lower fares when flights are first made available.

  • Finding flight tickets from Seattle to Adelaide Airport is easy if you're flexible with your dates. Try using the 'Whole month' tool to see the lowest prices throughout the month and snap up a great deal.

  • Create a Price Alert for flight tickets from Seattle to ADL. You don't need to check every day to see whether prices have dropped. We'll update you the moment the price changes.

  • Take advantage of the filters to find your ideal trip. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Seattle to Adelaide Airport, use the 'Sort by' function. You can also filter results by airline, arrival and departure times, and journey duration.

The best time to fly from Seattle to Adelaide Airport (ADL)

  • July is the busiest month to board a flight from Seattle to Adelaide Airport while April is the quietest. To work out the best time to go to Adelaide, consider whether you prefer a lively vibe or a quieter pace.

  • Schedule your flight from Seattle to ADL for January if you're eager to explore the city during its warmest month. Expect temperatures in Adelaide to range from 15ºC to 30ºC.

  • August has average temperatures of between 7ºC and 16ºC. Look for cheap flights from Seattle to Adelaide Airport sometime around then if you like cooler conditions.

More about Adelaide

  • Start your Adelaide trip off on the right foot by choosing the perfect place to stay. After booking your flight from Seattle to Adelaide Airport, browse our range of hotels including:

  • Every great holiday has to include some sightseeing. Adelaide Botanic Garden, Glenelg Beach and Adelaide Oval are attractions you won't want to skip in Adelaide.

Complete your Adelaide trip with a car rental

  • We use the same magic that helped you find your cheap flight from Seattle to Adelaide Airport to track down your perfect ride. Browse our car rentals in Adelaide and easily compare your options. Plus you'll find all the info you need to know, from the most popular rental company to the best time to book.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.