Cheap Flights from Seattle to Adelaide

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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 Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Adelaide Airport? If you want to travel next month, return fares start from $2,065. 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 April.

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$1,906
Cheapest month to flyApril

Finding cheap flights from Seattle to Adelaide: Frequently asked questions

The best price we found for a return flight from Seattle to Adelaide is $1,906. 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 $1,906.
As of March 2026, there are no flights flying from Seattle to Adelaide.
The cheapest month to fly from Seattle to Adelaide is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Adelaide Airport on Monday, 27 April 2026.
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 Qantas .

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

  • Adelaide Airport is located in Adelaide. The city operates on the UTC+10:30 timezone and is 18 hours 30 minutes ahead of Seattle.

  • To ensure you get on your flight from Seattle to ADL, leave enough time to check in and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • Flying during a peak time like July? Busy periods (like Thanksgiving, Christmas and New Year) can add another hour at check-in and security. Be extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Stopovers are the perfect opportunity to break up your journey and maybe even tour another city. When searching for cheap flights from Seattle to ADL leaving from Seattle-Tacoma International Airport (SEA), uncheck the 'Direct flights only' box to find out where you can stop along the way. Popular options include:

    • Dubai International Airport (DXB)

    • Singapore Changi Airport (SIN)

    • Doha Hamad International Airport (DOH)

  • SEA is around 23 kilometres from central Seattle. If you're catching a taxi, driving or ride-sharing from the centre, it'll take 25 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the journey time to be around 35 minutes.

  • Searching for a convenient hotel close to Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to Adelaide Airport, these accommodation options will put you moments from check-in:

  • Seattle-Tacoma International Airport has a solid on-time record, so you're unlikely to face delays. Departures from SEA make it to their destination as scheduled 80% of the time.

Seattle Paine Field International Airport (PAE)

  • You can arrive at PAE from central Seattle in approximately 40 minutes by car (depending on traffic conditions). The ride on public transport will take roughly 1 hour 30 minutes to travel the 40 kilometres or so.

  • Got a crack-of-dawn departure? Think about staying at one of these hotels near Seattle Paine Field International Airport the day before your Seattle to ADL flight:

  • Flights from Seattle Paine Field International Airport have a proven record for punctuality, with 80% of them landing as planned.

About Adelaide Airport (ADL)

Getting from Adelaide Airport (ADL) to central Adelaide

  • Adelaide Airport is around 6 kilometres from central Adelaide. It takes around 20 minutes or so to get to the city by car.

  • If you're travelling on public transport, expect a journey time of about 35 minutes.

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

  • The lowest price we've found for a one-way ticket from Seattle to Adelaide Airport is $989. For a return flight on this route, the best price is $1,906. Depending on the availability when you book, these fares could change.

  • Don't leave everything to the last minute. You're more likely to find cheap flights from Seattle to ADL if you book ahead. Airlines often offer some fantastic early bird discounts.

  • If you're flexible with your trip dates, try using the 'Whole month' search tool. It'll give you the lowest price across every month when searching for your Seattle to Adelaide Airport ticket.

  • There's no need to check every day to find out if prices have dropped when you create a Price Alert. We'll notify you the moment there's a better deal on plane tickets from Seattle to ADL.

  • Find the best deal on a flight from Seattle to Adelaide Airport with the help of the filters. Pick your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest.'

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

  • Think about the kind of holiday you want when planning your trip dates. December is the quietest month to go to Adelaide. November is when most people book flights from Seattle to Adelaide Airport (ADL), which may be ideal if you're chasing more action.

  • When booking your Seattle to ADL plane ticket, consider the weather you're most comfortable in. January is the warmest month in Adelaide, with temperatures ranging from 15ºC to 30ºC.

  • July sees temperatures of between 7ºC and 14ºC. Look for cheap tickets from Seattle to Adelaide Airport around that time if you want to travel in cooler conditions.

More about Adelaide

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Adelaide right here. Browse these options after you've booked your flight from Seattle to Adelaide Airport:

  • There are plenty of things to do in Adelaide when you're ready to see the sights. Kick off your exploring at St Peter's Cathedral followed by Adelaide Oval and Penfolds Winery.

Explore more of Australia

  • You've seen Adelaide, now it's time to discover more of Australia. Travel about 241 kilometres west to Port Lincoln to check off its top attractions. From Lincoln National Park to Winter Hill Lookout and Port Lincoln Railway Museum, you'll have a full itinerary ahead.

  • If you're interested in discovering another major stop in Australia, consider Port Pirie, about 209 kilometres north of Adelaide. Port Pirie Military Museum, Port Pirie National Trust Museum and Port Pirie Regional Tourism and Arts Centre are the start of reasons to visit.

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