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

Qantas Airways, United Airlines, and Qatar Airways 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 June 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.

$1,109 Cheap Flights from Adelaide to Washington in 2026

1 adult

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Find the cheapest flights from Adelaide to Washington

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:10 - 22:41

ADL

SEA

22h 01m

2 stops

18:10 - 11:55

SEA

ADL

25h 15m

2 stops

$1,678Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

13:25 - 21:58

ADL

SEA

25h 03m

2 stops

18:10 - 11:55

SEA

ADL

25h 15m

2 stops

$1,715Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

19:45 - 20:01

ADL

SEA

40h 46m

2 stops

18:10 - 11:05

SEA

ADL

24h 25m

2 stops

$1,862Qantas Airways

Fri, 17 Jul - Thu, 30 Jul

19:10 - 20:01

ADL

SEA

41h 21m

2 stops

18:10 - 11:05

SEA

ADL

24h 25m

2 stops

$1,870Qantas Airways

Fri, 17 Jul - Thu, 30 Jul

11:50 - 23:56

ADL

PDX

28h 36m

2 stops

17:37 - 09:25

PDX

ADL

23h 18m

2 stops

$1,884Qantas Airways

Thu, 16 Jul - Thu, 23 Jul

06:40 - 19:03

ADL

SEA

28h 53m

2 stops

15:33 - 11:05

SEA

ADL

27h 02m

2 stops

$1,950United Airlines

Fri, 17 Jul - Thu, 30 Jul

06:10 - 18:31

ADL

PDX

29h 51m

2 stops

15:15 - 13:55

PDX

ADL

29h 10m

2 stops

$2,025Air Canada

Tue, 27 Oct - Sat, 31 Oct

06:10 - 09:26

ADL

PDX

20h 46m

2 stops

07:00 - 13:55

PDX

ADL

37h 25m

2 stops

$2,026Air Canada

Tue, 27 Oct - Sat, 31 Oct

18:35 - 08:10

ADL

SEA

31h 05m

1 stop

08:45 - 08:50

SEA

ADL

29h 35m

1 stop

$2,125Singapore Airlines

Fri, 30 Oct - Sun, 1 Nov

14:25 - 23:56

ADL

PDX

26h 01m

3 stops

17:37 - 11:15

PDX

ADL

25h 08m

2 stops

$2,691Multiple Airlines

Thu, 16 Jul - Thu, 23 Jul

Qantas Airways flights from Adelaide to State of Washington

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

Qantas Airways

21 July

ADL17:10Adelaide

22h 01m

2 stops

SEA22:41Seattle/Tacoma Intl

5 Aug

SEA18:10Seattle/Tacoma Intl

25h 15m

2 stops

ADL11:55Adelaide

$1,678

Qantas Airways

21 July

ADL13:25Adelaide

25h 03m

2 stops

SEA21:58Seattle/Tacoma Intl

5 Aug

SEA18:10Seattle/Tacoma Intl

25h 15m

2 stops

ADL11:55Adelaide

$1,715

Qantas Airways

17 July

ADL19:45Adelaide

40h 46m

2 stops

SEA20:01Seattle/Tacoma Intl

30 July

SEA18:10Seattle/Tacoma Intl

24h 25m

2 stops

ADL11:05Adelaide

$1,862

Singapore Airlines flights from Adelaide to State of Washington

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

Singapore Airlines

30 Oct

ADL18:35Adelaide

31h 05m

1 stop

SEA08:10Seattle/Tacoma Intl

1 Nov

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,125

Singapore Airlines

30 Oct

ADL18:35Adelaide

31h 05m

1 stop

SEA08:10Seattle/Tacoma Intl

1 Nov

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,135

Singapore Airlines

30 Oct

ADL18:35Adelaide

31h 05m

1 stop

SEA08:10Seattle/Tacoma Intl

1 Nov

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,139

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

17:10-22:41

2 stops22h 01m

Seattle/Tacoma Intl

Wed 5/8

18:10-11:55

2 stops25h 15m

$1,678

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

13:25-21:58

2 stops25h 03m

Seattle/Tacoma Intl

Wed 5/8

18:10-11:55

2 stops25h 15m

$1,715

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

19:45-20:01

2 stops40h 46m

Seattle/Tacoma Intl

Thu 30/7

18:10-11:05

2 stops24h 25m

$1,862

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

19:10-20:01

2 stops41h 21m

Seattle/Tacoma Intl

Thu 30/7

18:10-11:05

2 stops24h 25m

$1,870

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Thu 16/7

11:50-23:56

2 stops28h 36m

Portland

Thu 23/7

17:37-09:25

2 stops23h 18m

$1,884

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:40-19:03

2 stops28h 53m

Seattle/Tacoma Intl

Thu 30/7

15:33-11:05

2 stops27h 02m

$1,950

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Tue 27/10

06:10-18:31

2 stops29h 51m

Portland

Sat 31/10

15:15-13:55

2 stops29h 10m

$2,025

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Tue 27/10

06:10-09:26

2 stops20h 46m

Portland

Sat 31/10

07:00-13:55

2 stops37h 25m

$2,026

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 30/10

18:35-08:10

1 stop31h 05m

Seattle/Tacoma Intl

Sun 1/11

08:45-08:50

1 stop29h 35m

$2,125

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Thu 16/7

14:25-23:56

3 stops26h 01m

Portland

Thu 23/7

17:37-11:15

2 stops25h 08m

$2,691

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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

What is the cheapest month to fly to State of Washington?

The month of October is, on average, the cheapest month to fly to State of Washington from Adelaide, with most prices found around $0. If you aren’t able to travel during the month of October, then book flights to State of Washington from Adelaide during August instead. Flights to State of Washington in August, while not as cheap as those in October, still average around $855.

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

You could potentially save up to 23% 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

Fastest flight time	21h 09m
Direct flights	None

The fastest flight from Adelaide to State of Washington takes 21h 09m

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 June 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 $1,162	Free cancellation	Rating 7.1 11,116 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.