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

United Airlines is the most popular carrier 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 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.

$1,748 Cheap Flights from Adelaide to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Adelaide to Washington

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One-way

Cheap return flights

Enter your travel dates to find the best prices.

20:00 - 06:19ADL Adelaide-PDX Portland

51h 49m2 stops Sydney Kingsford Smith Honolulu

10:30 - 11:05PDX Portland-ADL Adelaide

55h 05m2 stops Honolulu Sydney Kingsford Smith

$1,748Multiple Airlines

Wed, 14 Oct - Wed, 21 Oct

06:00 - 12:16ADL Adelaide-SEA Seattle/Tacoma Intl

23h 46m2 stops Melbourne Los Angeles Los Angeles

15:20 - 19:00SEA Seattle/Tacoma Intl-ADL Adelaide

34h 10m2 stops Los Angeles Los Angeles Melbourne

$1,796Qantas Airways

Wed, 14 Oct - Wed, 21 Oct

14:30 - 21:29ADL Adelaide-SEA Seattle/Tacoma Intl

23h 29m2 stops Sydney Kingsford Smith Honolulu

07:00 - 22:35SEA Seattle/Tacoma Intl-ADL Adelaide

22h 05m2 stops Honolulu Sydney Kingsford Smith

$1,799Multiple Airlines

Thu, 1 Oct - Wed, 14 Oct

06:10 - 10:05ADL Adelaide-SEA Seattle/Tacoma Intl

21h 25m2 stops Brisbane Vancouver Intl

15:00 - 13:55SEA Seattle/Tacoma Intl-ADL Adelaide

29h 25m2 stops Vancouver Intl Sydney Kingsford Smith

$1,887Air Canada

Tue, 13 Oct - Tue, 20 Oct

06:00 - 12:16ADL Adelaide-SEA Seattle/Tacoma Intl

23h 46m2 stops Melbourne Los Angeles Los Angeles

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

25h 46m2 stops San Francisco Sydney Kingsford Smith

$1,937Qantas Airways

Wed, 21 Oct - Wed, 28 Oct

06:00 - 17:03ADL Adelaide-PDX Portland

28h 33m2 stops Sydney Kingsford Smith Dallas/Fort Worth

06:30 - 11:55PDX Portland-ADL Adelaide

35h 55m2 stops Los Angeles Los Angeles Sydney Kingsford Smith

$2,024American Airlines

Sun, 11 Oct - Sun, 18 Oct

08:40 - 18:33ADL Adelaide-SEA Seattle/Tacoma Intl

28h 23m2 stops Melbourne San Francisco

17:24 - 16:20SEA Seattle/Tacoma Intl-ADL Adelaide

28h 26m2 stops San Francisco Brisbane

$2,096United Airlines

Tue, 24 Nov - Tue, 15 Dec

08:40 - 18:33ADL Adelaide-SEA Seattle/Tacoma Intl

28h 23m2 stops Melbourne San Francisco

17:24 - 16:20SEA Seattle/Tacoma Intl-ADL Adelaide

28h 26m2 stops San Francisco Brisbane

$2,102United Airlines

Tue, 24 Nov - Tue, 15 Dec

08:40 - 16:27ADL Adelaide-SEA Seattle/Tacoma Intl

26h 17m2 stops Melbourne San Francisco

17:24 - 13:55SEA Seattle/Tacoma Intl-ADL Adelaide

26h 01m2 stops San Francisco Sydney Kingsford Smith

$2,108United Airlines

Tue, 24 Nov - Tue, 15 Dec

22:00 - 12:25ADL Adelaide-SEA Seattle/Tacoma Intl

31h 55m1 stop Doha Hamad Intl

11:33 - 16:00SEA Seattle/Tacoma Intl-ADL Adelaide

34h 57m2 stops Los Angeles Los Angeles Doha Hamad Intl

$2,127Qatar Airways

Tue, 13 Oct - Tue, 20 Oct

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Qatar Airways flights from Adelaide to State of Washington

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

Qatar Airways

13 Oct

ADL22:00Adelaide

31h 55m

1 stop

SEA12:25Seattle/Tacoma Intl

20 Oct

SEA11:33Seattle/Tacoma Intl

34h 57m

2 stops

ADL16:00Adelaide

$2,127

Qatar Airways

14 Oct

ADL22:00Adelaide

39h 20m

2 stops

SEA19:50Seattle/Tacoma Intl

21 Oct

SEA16:25Seattle/Tacoma Intl

30h 05m

1 stop

ADL16:00Adelaide

$2,129

Qatar Airways

13 Oct

ADL22:00Adelaide

31h 55m

1 stop

SEA12:25Seattle/Tacoma Intl

20 Oct

SEA16:25Seattle/Tacoma Intl

30h 05m

1 stop

ADL16:00Adelaide

$2,284

United Airlines flights from Adelaide to State of Washington

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

United Airlines

24 Nov

ADL08:40Adelaide

28h 23m

2 stops

SEA18:33Seattle/Tacoma Intl

15 Dec

SEA17:24Seattle/Tacoma Intl

28h 26m

2 stops

ADL16:20Adelaide

$2,096

United Airlines

24 Nov

ADL08:40Adelaide

28h 23m

2 stops

SEA18:33Seattle/Tacoma Intl

15 Dec

SEA17:24Seattle/Tacoma Intl

28h 26m

2 stops

ADL16:20Adelaide

$2,102

United Airlines

24 Nov

ADL08:40Adelaide

26h 17m

2 stops

SEA16:27Seattle/Tacoma Intl

15 Dec

SEA17:24Seattle/Tacoma Intl

26h 01m

2 stops

ADL13:55Adelaide

$2,108

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

Wed 14/10

20:00-06:19

2 stops51h 49m

Portland

Wed 21/10

10:30-11:05

2 stops55h 05m

$1,748

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 14/10

06:00-12:16

2 stops23h 46m

Seattle/Tacoma Intl

Wed 21/10

15:20-19:00

2 stops34h 10m

$1,796

Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Thu 1/10

14:30-21:29

2 stops23h 29m

Seattle/Tacoma Intl

Wed 14/10

07:00-22:35

2 stops22h 05m

$1,799

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 13/10

06:10-10:05

2 stops21h 25m

Seattle/Tacoma Intl

Tue 20/10

15:00-13:55

2 stops29h 25m

$1,887

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 21/10

06:00-12:16

2 stops23h 46m

Seattle/Tacoma Intl

Wed 28/10

15:44-11:00

2 stops25h 46m

$1,937

AdelaidePortland

ADL Adelaide - PDX Portland

ADLPDX

Adelaide

Sun 11/10

06:00-17:03

2 stops28h 33m

Portland

Sun 18/10

06:30-11:55

2 stops35h 55m

$2,024

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

08:40-18:33

2 stops28h 23m

Seattle/Tacoma Intl

Tue 15/12

17:24-16:20

2 stops28h 26m

$2,096

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

08:40-18:33

2 stops28h 23m

Seattle/Tacoma Intl

Tue 15/12

17:24-16:20

2 stops28h 26m

$2,102

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

08:40-16:27

2 stops26h 17m

Seattle/Tacoma Intl

Tue 15/12

17:24-13:55

2 stops26h 01m

$2,108

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 13/10

22:00-12:25

1 stop31h 55m

Seattle/Tacoma Intl

Tue 20/10

11:33-16:00

2 stops34h 57m

$2,127

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 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 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	$2,628
Fastest flight time	23h 46m
Direct flights	None

The best one-way flight to State of Washington from Adelaide in the past 72 hours is $2,628. The best return flight deal from Adelaide to State of Washington found on momondo in the last 72 hours is $1,748.

The fastest flight from Adelaide to State of Washington takes 23h 46m

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 $1,163	Free cancellation	Rating 7.1 11,566 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.