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

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How to find the cheapest flight from
Seattle (SEA) to Adelaide (ADL)

All the information you need to plan the best SEA to ADL flight in 2022: compare Seattle to Adelaide flight prices with the expected peak season, weather and rainfall in Adelaide.
What is the cheapest day to fly round-trip from Seattle to Adelaide?

Users have found that flying from Seattle to Adelaide on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Seattle to Adelaide?

March can be a great time to fly to Adelaide from Seattle with a flight ticket averaging about $1,853. Cheapflights users have found deals in the month of March for as cheap as $1,132. The most expensive prices can be found in the month of November.

When is the cheapest time to fly from Seattle to Adelaide (SEA - ADL)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Adelaide in the morning. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight at noon.

Cheap flights from Seattle to Adelaide in August, September 2022

The best prices found for SEA to ADL flights for August, September
13 Sep - 13 Oct
$1,282pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
13 Sep - 13 Oct
$1,285pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
13 Sep - 13 Oct
$1,312pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Adelaide 2022 flight deals

Cheap flights to Adelaide from Seattle found for this year
30 Oct - 8 Nov
$1,043pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Air Canada
   
2 STOPS
SEA
Seattle/Tacoma Intl
30 Oct - 7 Nov
$1,114pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Air Canada
   
2 STOPS
SEA
Seattle/Tacoma Intl
11 Nov - 29 Nov
$1,152pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Cheap Qatar Airways flights from Seattle to Adelaide

18 Aug - 2 Sep
$6,414pp
SEA
Seattle/Tacoma Intl
Qatar Airways
 
1 STOP
ADL
Adelaide
ADL
Adelaide
Qatar Airways
 
1 STOP
SEA
Seattle/Tacoma Intl

Cheap Air Canada flights from Seattle to Adelaide

31 Oct - 8 Nov
$1,195pp
SEA
Seattle/Tacoma Intl
Air Canada
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Air Canada
   
2 STOPS
SEA
Seattle/Tacoma Intl
31 Oct - 6 Nov
$1,325pp
SEA
Seattle/Tacoma Intl
Air Canada
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Air Canada
   
2 STOPS
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Adelaide

Late deals on round-trip flights to Adelaide from Seattle, departing today and this week
18 Aug - 2 Sep
$2,250pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
18 Aug - 2 Sep
$3,524pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
18 Aug - 2 Sep
$3,698pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ADL
Adelaide
ADL
Adelaide
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Adelaide</span> flights.

Flight FAQs

From Seattle to Adelaide

Which airlines flying from Seattle/Tacoma Intl to Adelaide have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air New Zealand, Singapore Airlines, and Virgin Australia flying from Seattle/Tacoma Intl to Adelaide have implemented new flexible cancellation policies.

Can I find flights from Seattle to Adelaide for under $1,100 on Cheapflights?

Yes, there are multiple flights from Seattle to Adelaide for under $1,100. The cheapest flight booked recently is on Multiple Airlines for just $1,043, but on average you can expect to pay $1,283.

Are there last-minute flights available from Seattle to Adelaide for under $2,300?

There are currently 5+ open flights from Seattle to Adelaide within the next 7 days for less than $2,300.

What are the cheapest airlines flying from Seattle to Adelaide round-trip?

American Airlines, at $1,152, was found to be the cheapest airline from Seattle to Adelaide. An alternate airline flying to your destination would be Air Canada. These flights start at 37% lower than the current average price 3 months from now.

What are the cheapest flights from Seattle to Adelaide?

Looking for the cheapest flight from Seattle to Adelaide? While on average our users pay $2,735, our data indicates the cheapest price to be $678. The most popular route (Seattle/Tacoma Intl - Adelaide), is priced around $1,223.

What are the most popular airlines that fly from Seattle to Adelaide?

Consider Air Canada, Cathay Pacific or Delta when booking your flight. These represent the most popular airlines when flying from Seattle to Adelaide.

COVID Restrictions

View COVID Travel Restrictions for Adelaide, Australia

Do I need a COVID test to fly to Adelaide from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Adelaide

Most visitors from Seattle/Tacoma Intl can enter Adelaide without restrictions.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Adelaide.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Adelaide.

Do I need a test to fly back to Seattle from Adelaide?

Returning to Seattle/Tacoma Intl from Adelaide

COVID-19 testing requirements
Visitors from Adelaide are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Adelaide are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Adelaide, Australia

Top 3 airlines flying from Seattle/Tacoma Intl to Adelaide

The chart below displays the airlines Cheapflights users traveling from Seattle to Adelaide choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Air New Zealand
$728 $962 No cancel fee 78%
Virgin Australia
$892 $1,082 No cancel fee 80%
Singapore Airlines
$1,456 $1,586 No cancel fee 81%
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