What is the cheapest airline that flies from Adelaide to Washington?

Qantas Airways, United Airlines, and Singapore Airlines are the most popular carriers operating 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 August 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.

$1,069 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

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:30 - 07:05ADL Adelaide-SEA Seattle/Tacoma Intl

35h 05m2 stops Sydney Kingsford Smith Singapore Changi

08:40 - 17:20SEA Seattle/Tacoma Intl-ADL Adelaide

38h 10m1 stop Singapore Changi

$1,807Singapore Airlines

Tue, 3 Nov - Wed, 2 Dec

14:30 - 07:05ADL Adelaide-SEA Seattle/Tacoma Intl

35h 05m2 stops Sydney Kingsford Smith Singapore Changi

08:40 - 17:20SEA Seattle/Tacoma Intl-ADL Adelaide

38h 10m1 stop Singapore Changi

$1,808Singapore Airlines

Tue, 3 Nov - Wed, 2 Dec

06:10 - 14:37ADL Adelaide-SEA Seattle/Tacoma Intl

26h 57m2 stops Brisbane Vancouver Intl

15:15 - 13:55SEA Seattle/Tacoma Intl-ADL Adelaide

28h 10m2 stops Vancouver Intl Sydney Kingsford Smith

$1,833Air Canada

Tue, 24 Nov - Tue, 15 Dec

06:10 - 18:22ADL Adelaide-SEA Seattle/Tacoma Intl

30h 42m2 stops Brisbane Vancouver Intl

15:15 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

25h 10m2 stops Vancouver Intl Sydney Kingsford Smith

$1,888Air Canada

Tue, 24 Nov - Tue, 15 Dec

22:00 - 11:40ADL Adelaide-SEA Seattle/Tacoma Intl

32h 10m1 stop Doha Hamad Intl

15:50 - 15:55SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m1 stop Doha Hamad Intl

$1,899Qatar Airways

Tue, 3 Nov - Wed, 2 Dec

14:30 - 21:25ADL Adelaide-SEA Seattle/Tacoma Intl

25h 25m2 stops Sydney Kingsford Smith Honolulu

07:00 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

30h 40m2 stops Honolulu Sydney Kingsford Smith

$1,905Multiple Airlines

Tue, 3 Nov - Wed, 2 Dec

14:30 - 21:25ADL Adelaide-SEA Seattle/Tacoma Intl

25h 25m2 stops Sydney Kingsford Smith Honolulu

07:00 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

30h 40m2 stops Honolulu Sydney Kingsford Smith

$1,911Multiple Airlines

Tue, 3 Nov - Wed, 2 Dec

10:15 - 07:05ADL Adelaide-SEA Seattle/Tacoma Intl

39h 20m1 stop Singapore Changi

08:40 - 17:20SEA Seattle/Tacoma Intl-ADL Adelaide

38h 10m1 stop Singapore Changi

$1,936Singapore Airlines

Tue, 3 Nov - Wed, 2 Dec

06:10 - 09:27ADL Adelaide-SEA Seattle/Tacoma Intl

21h 47m2 stops Brisbane Vancouver Intl

15:15 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

25h 10m2 stops Vancouver Intl Sydney Kingsford Smith

$1,960Multiple Airlines

Tue, 24 Nov - Tue, 15 Dec

06:10 - 09:27ADL Adelaide-SEA Seattle/Tacoma Intl

21h 47m2 stops Brisbane Vancouver Intl

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

32h 25m2 stops Vancouver Intl Sydney Kingsford Smith

$1,964Air Canada

Tue, 24 Nov - Tue, 15 Dec

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Singapore Airlines flights from Adelaide to State of Washington

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

Singapore Airlines

19 Oct

ADL18:35Adelaide

31h 40m

1 stop

SEA08:45Seattle/Tacoma Intl

18 Nov

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$1,749

Singapore Airlines

3 Nov

ADL14:30Adelaide

35h 05m

2 stops

SEA07:05Seattle/Tacoma Intl

2 Dec

SEA08:40Seattle/Tacoma Intl

38h 10m

1 stop

ADL17:20Adelaide

$1,807

Singapore Airlines

3 Nov

ADL14:30Adelaide

35h 05m

2 stops

SEA07:05Seattle/Tacoma Intl

2 Dec

SEA08:40Seattle/Tacoma Intl

38h 10m

1 stop

ADL17:20Adelaide

$1,808

Qatar Airways flights from Adelaide to State of Washington

Our best Qatar Airways deals on Adelaide to State of Washington flight tickets

Qatar Airways

3 Nov

ADL22:00Adelaide

32h 10m

1 stop

SEA11:40Seattle/Tacoma Intl

2 Dec

SEA15:50Seattle/Tacoma Intl

29h 35m

1 stop

ADL15:55Adelaide

$1,899

Qatar Airways

13 Sept

ADL22:00Adelaide

40h 31m

2 stops

PDX22:01Portland

20 Sept

PDX09:20Portland

37h 10m

2 stops

ADL15:00Adelaide

$2,237

Qatar Airways

4 Oct

ADL22:00Adelaide

31h 55m

1 stop

SEA12:25Seattle/Tacoma Intl

11 Oct

SEA16:25Seattle/Tacoma Intl

30h 05m

1 stop

ADL16:00Adelaide

$2,332

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

14:30-07:05

2 stops35h 05m

Seattle/Tacoma Intl

Wed 2/12

08:40-17:20

1 stop38h 10m

$1,807

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

14:30-07:05

2 stops35h 05m

Seattle/Tacoma Intl

Wed 2/12

08:40-17:20

1 stop38h 10m

$1,808

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:10-14:37

2 stops26h 57m

Seattle/Tacoma Intl

Tue 15/12

15:15-13:55

2 stops28h 10m

$1,833

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:10-18:22

2 stops30h 42m

Seattle/Tacoma Intl

Tue 15/12

15:15-10:55

2 stops25h 10m

$1,888

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

22:00-11:40

1 stop32h 10m

Seattle/Tacoma Intl

Wed 2/12

15:50-15:55

1 stop29h 35m

$1,899

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

14:30-21:25

2 stops25h 25m

Seattle/Tacoma Intl

Wed 2/12

07:00-08:10

2 stops30h 40m

$1,905

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

14:30-21:25

2 stops25h 25m

Seattle/Tacoma Intl

Wed 2/12

07:00-08:10

2 stops30h 40m

$1,911

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 3/11

10:15-07:05

1 stop39h 20m

Seattle/Tacoma Intl

Wed 2/12

08:40-17:20

1 stop38h 10m

$1,936

Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Tue 15/12

15:15-10:55

2 stops25h 10m

$1,960

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Tue 15/12

15:15-18:10

2 stops32h 25m

$1,964

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted 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

Prices

Airlines

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

You could potentially save up to 10% 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	$1,069
Fastest flight time	21h 47m
Direct flights	None

The best one-way flight to State of Washington from Adelaide in the past 72 hours is $1,069. The best return flight deal from Adelaide to State of Washington found on momondo in the last 72 hours is $1,807.

The fastest flight from Adelaide to State of Washington takes 21h 47m

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 August 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 $1,170	Free cancellation	Rating 7.1 11,509 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.