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

United Airlines and Cathay Pacific 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.

$918 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

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

18:35 - 07:05ADL Adelaide-SEA Seattle/Tacoma Intl

31h 00m1 stop Singapore Changi

08:40 - 08:50SEA Seattle/Tacoma Intl-ADL Adelaide

29h 40m1 stop Singapore Changi

$1,602Singapore Airlines

Mon, 9 Nov - Sun, 6 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

$1,608Singapore Airlines

Mon, 9 Nov - Sat, 5 Dec

12:40 - 21:29ADL Adelaide-SEA Seattle/Tacoma Intl

25h 19m2 stops Sydney Kingsford Smith Honolulu

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

22h 45m2 stops Honolulu Sydney Kingsford Smith

$1,711Multiple Airlines

Thu, 10 Sep - Fri, 25 Sep

20:05 - 21:25ADL Adelaide-SEA Seattle/Tacoma Intl

43h 50m2 stops Sydney Kingsford Smith Honolulu

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

30h 40m2 stops Honolulu Sydney Kingsford Smith

$1,726Multiple Airlines

Mon, 9 Nov - Sat, 5 Dec

20:05 - 21:25ADL Adelaide-SEA Seattle/Tacoma Intl

43h 50m2 stops Sydney Kingsford Smith Honolulu

11:55 - 08:10SEA Seattle/Tacoma Intl-ADL Adelaide

49h 45m2 stops Honolulu Sydney Kingsford Smith

$1,737Multiple Airlines

Mon, 9 Nov - Sun, 6 Dec

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

39h 20m1 stop Singapore Changi

08:40 - 16:10SEA Seattle/Tacoma Intl-ADL Adelaide

37h 00m2 stops Singapore Changi Melbourne

$1,774Singapore Airlines

Mon, 9 Nov - Sun, 6 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

$1,952Air Canada

Tue, 24 Nov - Tue, 15 Dec

06:00 - 13:35ADL Adelaide-PDX Portland

25h 05m2 stops Melbourne Los Angeles Los Angeles

18:18 - 11:55PDX Portland-ADL Adelaide

24h 07m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$2,065Qantas Airways

Fri, 9 Oct - Fri, 16 Oct

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

21h 47m2 stops Brisbane Vancouver Intl

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

30h 15m2 stops Vancouver Intl Sydney Kingsford Smith

$2,128Air Canada

Tue, 24 Nov - Tue, 15 Dec

09:30 - 21:55ADL Adelaide-PDX Portland

28h 55m2 stops Brisbane Los Angeles Los Angeles

17:55 - 18:25PDX Portland-ADL Adelaide

32h 00m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$2,440Qantas Airways

Wed, 23 Sep - Wed, 30 Sep

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Air Canada flights from Adelaide to State of Washington

Our best Air Canada deals on Adelaide to State of Washington flight tickets

Air Canada

24 Nov

ADL06:10Adelaide

21h 47m

2 stops

SEA09:27Seattle/Tacoma Intl

15 Dec

SEA15:15Seattle/Tacoma Intl

32h 25m

2 stops

ADL18:10Adelaide

$1,952

Air Canada

24 Nov

ADL06:10Adelaide

21h 47m

2 stops

SEA09:27Seattle/Tacoma Intl

15 Dec

SEA10:10Seattle/Tacoma Intl

30h 15m

2 stops

ADL10:55Adelaide

$2,128

Qantas Airways flights from Adelaide to State of Washington

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

Qantas Airways

8 Oct

ADL06:00Adelaide

23h 46m

2 stops

SEA12:16Seattle/Tacoma Intl

15 Oct

SEA15:20Seattle/Tacoma Intl

24h 35m

2 stops

ADL09:25Adelaide

$1,845

Qantas Airways

4 Oct

ADL19:45Adelaide

41h 35m

2 stops

SEA19:50Seattle/Tacoma Intl

17 Oct

SEA20:36Seattle/Tacoma Intl

43h 34m

2 stops

ADL09:40Adelaide

$1,937

Qantas Airways

9 Oct

ADL06:00Adelaide

25h 05m

2 stops

PDX13:35Portland

16 Oct

PDX18:18Portland

24h 07m

2 stops

ADL11:55Adelaide

$2,065

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 9/11

18:35-07:05

1 stop31h 00m

Seattle/Tacoma Intl

Sun 6/12

08:40-08:50

1 stop29h 40m

$1,602

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 9/11

10:15-07:05

1 stop39h 20m

Seattle/Tacoma Intl

Sat 5/12

08:40-17:20

1 stop38h 10m

$1,608

Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Thu 10/9

12:40-21:29

2 stops25h 19m

Seattle/Tacoma Intl

Fri 25/9

07:20-22:35

2 stops22h 45m

$1,711

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 9/11

20:05-21:25

2 stops43h 50m

Seattle/Tacoma Intl

Sat 5/12

07:00-08:10

2 stops30h 40m

$1,726

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 9/11

20:05-21:25

2 stops43h 50m

Seattle/Tacoma Intl

Sun 6/12

11:55-08:10

2 stops49h 45m

$1,737

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 9/11

10:15-07:05

1 stop39h 20m

Seattle/Tacoma Intl

Sun 6/12

08:40-16:10

2 stops37h 00m

$1,774

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

$1,952

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Fri 9/10

06:00-13:35

2 stops25h 05m

Portland

Fri 16/10

18:18-11:55

2 stops24h 07m

$2,065

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

10:10-10:55

2 stops30h 15m

$2,128

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Wed 23/9

09:30-21:55

2 stops28h 55m

Portland

Wed 30/9

17:55-18:25

2 stops32h 00m

$2,440

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	$918
Fastest flight time	22h 35m
Direct flights	None

The best one-way flight to State of Washington from Adelaide in the past 72 hours is $918. The best return flight deal from Adelaide to State of Washington found on momondo in the last 72 hours is $1,602.

The fastest flight from Adelaide to State of Washington takes 22h 35m

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 $1,161	Free cancellation	Rating 7.1 11,540 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.