When did momondo last update prices for flights from Adelaide Airport to Washington?

Prices for flights from Adelaide Airport to Washington are updated daily.

How many operators does momondo search for flights from Adelaide Airport to Washington?

As of September 2026, there are 2 operators available to choose from for flights from Adelaide Airport to Washington.

How old do you have to be to fly from Adelaide Airport to Washington?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Adelaide Airport to Washington.

What documentation or ID do you need to fly to Washington?

The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$1,712 Cheap Flights from Adelaide to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Adelaide to Washington

Return

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

19:00 - 20:50ADL Adelaide-PDX Portland

43h 20m2 stops Sydney Kingsford Smith Honolulu

08:00 - 08:10PDX Portland-ADL Adelaide

30h 40m2 stops Honolulu Sydney Kingsford Smith

$1,712Multiple Airlines

Mon, 19 Oct - Mon, 26 Oct

20:00 - 20:50ADL Adelaide-PDX Portland

42h 20m2 stops Sydney Kingsford Smith Honolulu

08:00 - 08:10PDX Portland-ADL Adelaide

30h 40m2 stops Honolulu Sydney Kingsford Smith

$1,715Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

19:10 - 21:34ADL Adelaide-SEA Seattle/Tacoma Intl

43h 54m2 stops Sydney Kingsford Smith Honolulu

07:45 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

30h 55m2 stops Honolulu Sydney Kingsford Smith

$1,721Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

19:10 - 21:34ADL Adelaide-SEA Seattle/Tacoma Intl

43h 54m2 stops Sydney Kingsford Smith Honolulu

07:45 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

30h 55m2 stops Honolulu Sydney Kingsford Smith

$1,723Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

19:10 - 21:34ADL Adelaide-SEA Seattle/Tacoma Intl

43h 54m2 stops Sydney Kingsford Smith Honolulu

07:45 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

30h 55m2 stops Honolulu Sydney Kingsford Smith

$1,723Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

11:30 - 06:19ADL Adelaide-PDX Portland

36h 19m2 stops Sydney Kingsford Smith Honolulu

10:30 - 08:10PDX Portland-ADL Adelaide

52h 10m2 stops Honolulu Sydney Kingsford Smith

$1,733Multiple Airlines

Sun, 18 Oct - Sun, 25 Oct

19:10 - 21:34ADL Adelaide-SEA Seattle/Tacoma Intl

43h 54m2 stops Sydney Kingsford Smith Honolulu

20:45 - 11:00SEA Seattle/Tacoma Intl-ADL Adelaide

44h 45m2 stops Honolulu Sydney Kingsford Smith

$1,740Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

14:30 - 21:37ADL Adelaide-SEA Seattle/Tacoma Intl

24h 37m2 stops Sydney Kingsford Smith Honolulu

13:00 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

48h 40m2 stops Honolulu Sydney Kingsford Smith

$1,804Multiple Airlines

Sat, 31 Oct - Sun, 1 Nov

11:50 - 19:50ADL Adelaide-SEA Seattle/Tacoma Intl

25h 30m2 stops Sydney Kingsford Smith Los Angeles

15:44 - 11:00SEA Seattle/Tacoma Intl-ADL Adelaide

25h 46m2 stops San Francisco Sydney Kingsford Smith

$1,884Qantas Airways

Wed, 21 Oct - Wed, 28 Oct

19:55 - 18:22ADL Adelaide-SEA Seattle/Tacoma Intl

40h 57m2 stops Sydney Kingsford Smith Vancouver Intl

15:15 - 18:10SEA Seattle/Tacoma Intl-ADL Adelaide

32h 25m2 stops Vancouver Intl Sydney Kingsford Smith

$2,358Air Canada

Tue, 24 Nov - Tue, 15 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:25 - 23:50ADL Adelaide-SEA Seattle/Tacoma Intl

33h 55m2 stops Sydney Kingsford Smith Honolulu

07:20 - 22:35SEA Seattle/Tacoma Intl-ADL Adelaide

22h 45m2 stops Honolulu Sydney Kingsford Smith

$1,758Multiple Airlines

Thu, 10 Sep - Fri, 11 Sep

20:00 - 10:05ADL Adelaide-SEA Seattle/Tacoma Intl

30h 35m2 stops Sydney Kingsford Smith Vancouver Intl

16:25 - 15:00SEA Seattle/Tacoma Intl-ADL Adelaide

30h 05m1 stop Doha Hamad Intl

$2,389Multiple Airlines

Wed, 9 Sep - Thu, 10 Sep

19:00 - 10:05ADL Adelaide-SEA Seattle/Tacoma Intl

31h 35m2 stops Sydney Kingsford Smith Vancouver Intl

16:25 - 15:00SEA Seattle/Tacoma Intl-ADL Adelaide

30h 05m1 stop Doha Hamad Intl

$2,498Multiple Airlines

Thu, 10 Sep - Fri, 11 Sep

20:00 - 10:05ADL Adelaide-SEA Seattle/Tacoma Intl

30h 35m2 stops Sydney Kingsford Smith Vancouver Intl

12:25 - 11:05SEA Seattle/Tacoma Intl-ADL Adelaide

30h 10m2 stops Hong Kong Intl Sydney Kingsford Smith

$2,502Multiple Airlines

Wed, 9 Sep - Thu, 10 Sep

06:00 - 09:08ADL Adelaide-SEA Seattle/Tacoma Intl

43h 38m3 stops Sydney Kingsford Smith Hong Kong Intl San Francisco

21:25 - 08:05SEA Seattle/Tacoma Intl-ADL Adelaide

42h 10m3 stops San Francisco Hong Kong Intl Sydney Kingsford Smith

$2,621Cathay Pacific

Thu, 10 Sep - Fri, 11 Sep

06:00 - 19:40ADL Adelaide-SEA Seattle/Tacoma Intl

30h 10m3 stops Melbourne Hong Kong Intl Taipei City Taiwan Taoyuan Intl

12:25 - 11:05SEA Seattle/Tacoma Intl-ADL Adelaide

30h 10m2 stops Hong Kong Intl Sydney Kingsford Smith

$2,731Multiple Airlines

Wed, 9 Sep - Thu, 10 Sep

16:55 - 10:05ADL Adelaide-SEA Seattle/Tacoma Intl

33h 40m3 stops Auckland Intl Sydney Kingsford Smith Vancouver Intl

13:15 - 16:40SEA Seattle/Tacoma Intl-ADL Adelaide

34h 55m3 stops Tokyo Narita Hanoi Noibai Sydney Kingsford Smith

$3,089Multiple Airlines

Wed, 9 Sep - Thu, 10 Sep

15:00 - 16:10ADL Adelaide-SEA Seattle/Tacoma Intl

41h 40m3 stops Sydney Kingsford Smith Singapore Changi Taipei City Taiwan Taoyuan Intl

19:10 - 20:05SEA Seattle/Tacoma Intl-ADL Adelaide

32h 25m2 stops Dublin Dubai Intl

$3,319Multiple Airlines

Thu, 10 Sep - Fri, 11 Sep

22:00 - 13:05ADL Adelaide-SEA Seattle/Tacoma Intl

31h 35m1 stop Doha Hamad Intl

16:25 - 15:00SEA Seattle/Tacoma Intl-ADL Adelaide

30h 05m1 stop Doha Hamad Intl

$3,815Multiple Airlines

Wed, 9 Sep - Thu, 10 Sep

17:35 - 08:45ADL Adelaide-SEA Seattle/Tacoma Intl

31h 40m1 stop Singapore Changi

16:25 - 15:00SEA Seattle/Tacoma Intl-ADL Adelaide

30h 05m1 stop Doha Hamad Intl

$4,001Multiple Airlines

Thu, 10 Sep - Fri, 11 Sep

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Cathay Pacific flights from Adelaide to State of Washington

Our best Cathay Pacific deals on Adelaide to State of Washington flight tickets

Cathay Pacific

31 Oct

ADL12:00Adelaide

44h 58m

3 stops

SEA15:28Seattle/Tacoma Intl

1 Nov

SEA16:59Seattle/Tacoma Intl

43h 36m

3 stops

ADL07:05Adelaide

$2,552

Cathay Pacific

10 Sept

ADL06:00Adelaide

43h 38m

3 stops

SEA09:08Seattle/Tacoma Intl

11 Sept

SEA21:25Seattle/Tacoma Intl

42h 10m

3 stops

ADL08:05Adelaide

$2,621

Cathay Pacific

1 Oct

ADL06:00Adelaide

44h 21m

3 stops

SEA09:51Seattle/Tacoma Intl

11 Oct

SEA06:10Seattle/Tacoma Intl

42h 05m

3 stops

ADL17:45Adelaide

$2,720

Singapore Airlines flights from Adelaide to State of Washington

Our best Singapore Airlines deals on Adelaide to State of Washington flight tickets

Singapore Airlines

21 Oct

ADL10:10Adelaide

40h 05m

1 stop

SEA08:45Seattle/Tacoma Intl

28 Oct

SEA06:39Seattle/Tacoma Intl

32h 41m

2 stops

ADL08:50Adelaide

$2,065

Singapore Airlines

24 Nov

ADL18:20Adelaide

31h 15m

2 stops

SEA07:05Seattle/Tacoma Intl

15 Dec

SEA08:40Seattle/Tacoma Intl

29h 40m

1 stop

ADL08:50Adelaide

$2,377

Singapore Airlines

24 Nov

ADL18:20Adelaide

31h 15m

2 stops

SEA07:05Seattle/Tacoma Intl

15 Dec

SEA08:40Seattle/Tacoma Intl

29h 40m

1 stop

ADL08:50Adelaide

$2,378

momondo Fare Finder

Use the filters below to find and compare flights from Adelaide to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Mon 19/10

19:00-20:50

2 stops43h 20m

Portland

Mon 26/10

08:00-08:10

2 stops30h 40m

$1,712

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Wed 21/10

20:00-20:50

2 stops42h 20m

Portland

Wed 28/10

08:00-08:10

2 stops30h 40m

$1,715

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

19:10-21:34

2 stops43h 54m

Seattle/Tacoma Intl

Wed 28/10

07:45-08:10

2 stops30h 55m

$1,721

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

19:10-21:34

2 stops43h 54m

Seattle/Tacoma Intl

Wed 28/10

07:45-08:10

2 stops30h 55m

$1,723

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

19:10-21:34

2 stops43h 54m

Seattle/Tacoma Intl

Wed 28/10

07:45-08:10

2 stops30h 55m

$1,723

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Sun 18/10

11:30-06:19

2 stops36h 19m

Portland

Sun 25/10

10:30-08:10

2 stops52h 10m

$1,733

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

19:10-21:34

2 stops43h 54m

Seattle/Tacoma Intl

Wed 28/10

20:45-11:00

2 stops44h 45m

$1,740

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sat 31/10

14:30-21:37

2 stops24h 37m

Seattle/Tacoma Intl

Sun 1/11

13:00-08:10

2 stops48h 40m

$1,804

Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

11:50-19:50

2 stops25h 30m

Seattle/Tacoma Intl

Wed 28/10

15:44-11:00

2 stops25h 46m

$1,884

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

19:55-18:22

2 stops40h 57m

Seattle/Tacoma Intl

Tue 15/12

15:15-18:10

2 stops32h 25m

$2,358

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Adelaide to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Adelaide to State of Washington flights?

You could potentially save up to 2% on your flight if you consider stops on a Adelaide to State of Washington flight.

Cheap Adelaide to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Adelaide to State of Washington

Best price found	$1,712
Fastest flight time	21h 30m
Direct flights	None

The best flight deal from Adelaide to State of Washington found on momondo in the last 72 hours is $1,712

The fastest flight from Adelaide to State of Washington takes 21h 30m

There are no direct flights from Adelaide to State of Washington. There are no popular flight routes from Adelaide to State of Washington.

Search flight deals

Frequently asked questions about flying from Adelaide to Washington

When did momondo last update prices for flights from Adelaide Airport to Washington?
Prices for flights from Adelaide Airport to Washington are updated daily.
How many operators does momondo search for flights from Adelaide Airport to Washington?
As of September 2026, there are 2 operators available to choose from for flights from Adelaide Airport to Washington.
How old do you have to be to fly from Adelaide Airport to Washington?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Adelaide Airport to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Adelaide to State of Washington

Compare and see reviews for airlines that fly from Adelaide to State of Washington with momondo

Airline	Rating	Free cancellation	Price
Air Canada	PriceFrom $1,325	Free cancellation	Rating 7.1 11,593 reviews		Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Adelaide to Washington?

Finding the right flight to Washington from Adelaide is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

Can I find flights from Adelaide to Washington with flexible booking policies on momondo?

Flights from Adelaide to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Adelaide to Washington?

momondo helps you find the best flight between Adelaide and Washington by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Adelaide to Washington right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Adelaide to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.