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Cheap flights from Seattle to Adelaide from $991

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
5 May — 12 May1
1 adult

Cheap flight deals from Seattle to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 April 2025.

Round-trip from

$2,034

One-way from

$991

Popular in

January

Cheapest in

March

Average price

$2,451
Hawaiian Airlines
  • Hawaiian Airlines
  • 23/8-28/8
  • 4 total stops
  • 55h 22m total
  • Seattle to Adelaide
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Qantas Airways
  • Qantas Airways
  • 14/6
  • 2 total stops
  • 27h 10m total
  • Seattle to Adelaide
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($814 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($153 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Seattle to Adelaide

Cheapest flights from Seattle to Adelaide
Explore the most affordable flight options available from Seattle to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Sat 23/808:15SEA - ADL
2 stops32h 10mHawaiian Airlines
Thu 28/816:30ADL - SEA
2 stops23h 12mHawaiian Airlines
Deal found 30/4$2,034
Thu 5/618:59SEA - ADL
2 stops24h 06mMultiple Airlines
Thu 12/612:35ADL - SEA
2 stops21h 49mMultiple Airlines
Deal found 29/4$2,070
Sat 4/1015:35SEA - ADL
2 stops27h 00mQantas Airways
Sat 18/1014:55ADL - SEA
2 stops22h 30mQantas Airways
Deal found 29/4$2,195
Sat 14/617:59SEA - ADL
2 stops25h 06mFiji Airways
Sat 21/612:35ADL - SEA
2 stops22h 49mFiji Airways
Deal found 30/4$2,266
Fri 13/617:14SEA - ADL
2 stops24h 21mUnited Airlines
Fri 20/606:05ADL - SEA
3 stops31h 33mUnited Airlines
Deal found 29/4$2,334
Sat 4/1016:30SEA - ADL
1 stop30h 50mQatar Airways
Sat 18/1018:20ADL - SEA
2 stops35h 40mQatar Airways
Deal found 29/4$2,464
Fri 22/813:00SEA - ADL
2 stops29h 25mAir New Zealand
Thu 28/819:15ADL - SEA
3 stops39h 51mAir New Zealand
Deal found 30/4$2,598
Sat 4/1010:15SEA - ADL
1 stop37h 35mSingapore Airlines
Sat 18/1018:35ADL - SEA
1 stop31h 40mSingapore Airlines
Deal found 29/4$2,898
Tue 6/514:55SEA - ADL
2 stops28h 25mAir Canada
Sun 18/521:20ADL - SEA
2 stops28h 28mAir Canada
Deal found 29/4$15,092

Cheapflights Fare Finder

Customise your flight search to find flights from Seattle to Adelaide that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.

Fly from

Seattle

Fly to

Adelaide

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 23/8

08:15-08:55

2 stops32h 10m

Adelaide

Thu 28/8

16:30-23:12

2 stops23h 12m

$2,034

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 5/6

18:59-11:35

2 stops24h 06m

Adelaide

Thu 12/6

12:35-17:54

2 stops21h 49m

$2,070

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 4/10

15:35-12:05

2 stops27h 00m

Adelaide

Sat 18/10

14:55-19:55

2 stops22h 30m

$2,195

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 14/6

17:59-11:35

2 stops25h 06m

Adelaide

Sat 21/6

12:35-18:54

2 stops22h 49m

$2,266

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 13/6

17:14-10:05

2 stops24h 21m

Adelaide

Fri 20/6

06:05-21:08

3 stops31h 33m

$2,334

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 4/10

16:30-16:50

1 stop30h 50m

Adelaide

Sat 18/10

18:20-12:30

2 stops35h 40m

$2,464

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 22/8

13:00-10:55

2 stops29h 25m

Adelaide

Thu 28/8

19:15-18:36

3 stops39h 51m

$2,598

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 4/10

10:15-17:20

1 stop37h 35m

Adelaide

Sat 18/10

18:35-08:45

1 stop31h 40m

$2,898

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 14/6

14:40-10:20

2 stops27h 10m

$991

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 13/6

17:14-10:05

2 stops24h 21m

$1,121

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 13 results
1
2

Best time to book a flight from Seattle to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Adelaide

What is the cheapest month to book a flight from Seattle to Adelaide?

Currently, June is the cheapest month in which you can book a flight from Seattle to Adelaide (average of $168). Flying from Seattle to Adelaide in October is currently the most expensive (average of $241). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Adelaide by month

Plan your trip to Adelaide by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Adelaide ranges from 10.0 - 60.0 inches per month. July is typically the wettest month, when rainfall can reach 60.0 mm. January is typically the driest time to visit Adelaide when rainfall is around 10.0 mm.

Temperature in Adelaide by month

Plan your trip to Adelaide by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Adelaide, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Adelaide

Get insights into the airlines that provide service to Adelaide. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Adelaide. Reviews last updated 30 April 2025.
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Fiji Airways
8.1
Very Good
190 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Singapore Airlines
8.1
Very Good
1,292 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Air New Zealand
8.0
Very Good
472 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Hawaiian Airlines
7.9
Good
2,408 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Qantas Airways
7.5
Good
829 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Comfort

8.1

Entertainment

7.5

Overall

8.1

Crew

8.5

Boarding

8.2

Food

7.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Our cheapest airline available from Seattle to Adelaide is Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $2,034 on this airline. Additional options worth looking into are Qantas Airways and Fiji Airways, starting at $2,195 and $2,266 round-trip. Hawaiian Airlines is 12% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Adelaide one-way?

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $991. Users have also found prices from $1,121 and $1,999 on United Airlines and Qatar Airways, respectively.

  • Can I find deals for flights from Seattle to Adelaide that include hotel bookings?

    Yes. In addition to deals on Seattle to Adelaide flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Adelaide.

  • Can I find deals for business class flights from Seattle to Adelaide?

    Yes. Cheapflights offers flight deals from Seattle to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Adelaide?

    Currently, June is the cheapest month in which you can book a flight from Seattle to Adelaide (average of $168). Flying from Seattle to Adelaide in October is currently the most expensive (average of $241). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Other flights to Adelaide

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Can Cheapflights notify me if prices for flights from Seattle to Adelaide become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Adelaide flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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