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

Qantas Airways, Cathay Pacific, 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 July 2026, there are 3 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.

$1,149 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.

06:25 - 23:53

ADL

SEA

33h 58m

2 stops

07:20 - 08:10

SEA

ADL

32h 20m

2 stops

$1,749Multiple Airlines

Thu, 20 Aug - Thu, 27 Aug

13:25 - 20:56

ADL

SEA

24h 01m

2 stops

17:10 - 11:55

SEA

ADL

26h 15m

2 stops

$1,753Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

13:25 - 20:56

ADL

SEA

24h 01m

2 stops

17:10 - 11:55

SEA

ADL

26h 15m

2 stops

$1,755Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

12:40 - 21:02

ADL

SEA

24h 52m

2 stops

18:10 - 11:55

SEA

ADL

25h 15m

2 stops

$1,762Qantas Airways

Wed, 5 Aug - Tue, 18 Aug

06:05 - 16:20

ADL

SEA

26h 45m

2 stops

07:00 - 13:45

SEA

ADL

38h 15m

2 stops

$1,805United Airlines

Thu, 6 Aug - Sun, 16 Aug

08:40 - 23:16

ADL

SEA

33h 06m

2 stops

17:30 - 16:20

SEA

ADL

28h 20m

2 stops

$1,815Virgin Australia

Tue, 24 Nov - Tue, 15 Dec

06:05 - 21:10

ADL

SEA

31h 35m

3 stops

15:30 - 11:05

SEA

ADL

27h 05m

2 stops

$1,818United Airlines

Wed, 5 Aug - Tue, 18 Aug

06:05 - 21:10

ADL

SEA

31h 35m

3 stops

15:30 - 11:05

SEA

ADL

27h 05m

2 stops

$1,821United Airlines

Wed, 5 Aug - Tue, 18 Aug

08:40 - 18:31

ADL

SEA

28h 21m

2 stops

10:45 - 16:20

SEA

ADL

35h 05m

2 stops

$1,822United Airlines

Thu, 5 Nov - Mon, 9 Nov

21:50 - 20:54

ADL

PDX

39h 34m

2 stops

15:43 - 13:45

PDX

ADL

29h 32m

2 stops

$1,916Virgin Australia

Sun, 9 Aug - Sat, 15 Aug

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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

ADL13:25Adelaide

24h 01m

2 stops

SEA20:56Seattle/Tacoma Intl

5 Aug

SEA17:10Seattle/Tacoma Intl

26h 15m

2 stops

ADL11:55Adelaide

$1,753

Qantas Airways

21 July

ADL13:25Adelaide

24h 01m

2 stops

SEA20:56Seattle/Tacoma Intl

5 Aug

SEA17:10Seattle/Tacoma Intl

26h 15m

2 stops

ADL11:55Adelaide

$1,755

Qantas Airways

5 Aug

ADL12:40Adelaide

24h 52m

2 stops

SEA21:02Seattle/Tacoma Intl

18 Aug

SEA18:10Seattle/Tacoma Intl

25h 15m

2 stops

ADL11:55Adelaide

$1,762

Singapore Airlines flights from Adelaide to State of Washington

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

Singapore Airlines

24 Nov

ADL17:05Adelaide

32h 35m

2 stops

SEA07:10Seattle/Tacoma Intl

11 Dec

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,101

Singapore Airlines

11 Sept

ADL17:35Adelaide

31h 40m

1 stop

SEA08:45Seattle/Tacoma Intl

9 Oct

SEA10:15Seattle/Tacoma Intl

30h 20m

2 stops

ADL10:05Adelaide

$2,191

Singapore Airlines

24 Nov

ADL17:05Adelaide

32h 35m

2 stops

SEA07:10Seattle/Tacoma Intl

15 Dec

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,199

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 20/8

06:25-23:53

2 stops33h 58m

Seattle/Tacoma Intl

Thu 27/8

07:20-08:10

2 stops32h 20m

$1,749

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

13:25-20:56

2 stops24h 01m

Seattle/Tacoma Intl

Wed 5/8

17:10-11:55

2 stops26h 15m

$1,753

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

13:25-20:56

2 stops24h 01m

Seattle/Tacoma Intl

Wed 5/8

17:10-11:55

2 stops26h 15m

$1,755

Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 5/8

12:40-21:02

2 stops24h 52m

Seattle/Tacoma Intl

Tue 18/8

18:10-11:55

2 stops25h 15m

$1,762

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 6/8

06:05-16:20

2 stops26h 45m

Seattle/Tacoma Intl

Sun 16/8

07:00-13:45

2 stops38h 15m

$1,805

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

08:40-23:16

2 stops33h 06m

Seattle/Tacoma Intl

Tue 15/12

17:30-16:20

2 stops28h 20m

$1,815

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 5/8

06:05-21:10

3 stops31h 35m

Seattle/Tacoma Intl

Tue 18/8

15:30-11:05

2 stops27h 05m

$1,818

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 5/8

06:05-21:10

3 stops31h 35m

Seattle/Tacoma Intl

Tue 18/8

15:30-11:05

2 stops27h 05m

$1,821

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 5/11

08:40-18:31

2 stops28h 21m

Seattle/Tacoma Intl

Mon 9/11

10:45-16:20

2 stops35h 05m

$1,822

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Sun 9/8

21:50-20:54

2 stops39h 34m

Portland

Sat 15/8

15:43-13:45

2 stops29h 32m

$1,916

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 March instead. Flights to State of Washington in March, while not as cheap as those in October, still average around $0.

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

You could potentially save up to 12% 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	24h 01m
Direct flights	None

The fastest flight from Adelaide to State of Washington takes 24h 01m

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 July 2026, there are 3 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 $1,198	Free cancellation	Rating 7.1 11,327 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.