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

United Airlines, Qantas Airways, and Virgin Australia are the most popular carriers operating from Adelaide to Washington

Which airlines fly to State of Washington?

Air Canada, Qantas Airways and Virgin Australia are the top three most popular airlines that fly to State of Washington from Adelaide according to our data. Air Canada is the first choice among our users, with 30% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 4 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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 May 2026, there are 4 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.

$1,071 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

Cheap return flights

Enter your travel dates to find the best prices.

10:15 - 07:10

ADL

SEA

39h 25m

1 stop

08:45 - 17:20

SEA

ADL

38h 05m

1 stop

$1,644Singapore Airlines

Tue, 3 Nov - Tue, 24 Nov

14:25 - 22:41

ADL

SEA

24h 46m

2 stops

17:10 - 11:55

SEA

ADL

26h 15m

2 stops

$1,676Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

06:10 - 09:17

ADL

SEA

21h 37m

2 stops

19:05 - 16:20

SEA

ADL

26h 45m

2 stops

$1,700Air Canada

Tue, 3 Nov - Tue, 24 Nov

06:05 - 19:03

ADL

SEA

29h 28m

2 stops

17:04 - 15:45

SEA

ADL

30h 11m

2 stops

$1,787Virgin Australia

Wed, 1 Jul - Mon, 27 Jul

17:10 - 21:45

ADL

SEA

45h 05m

2 stops

14:20 - 11:55

SEA

ADL

29h 05m

2 stops

$1,922Qantas Airways

Fri, 17 Jul - Thu, 30 Jul

19:10 - 21:45

ADL

SEA

43h 05m

2 stops

14:20 - 11:55

SEA

ADL

29h 05m

2 stops

$1,923Qantas Airways

Fri, 17 Jul - Thu, 30 Jul

06:40 - 19:03

ADL

SEA

28h 53m

2 stops

15:33 - 11:05

SEA

ADL

27h 02m

2 stops

$1,947United Airlines

Fri, 17 Jul - Thu, 30 Jul

12:35 - 19:16

ADL

SEA

23h 11m

2 stops

20:42 - 11:35

SEA

ADL

46h 23m

2 stops

$2,007Multiple Airlines

Thu, 4 Jun - Fri, 26 Jun

06:00 - 20:46

ADL

PDX

31h 16m

2 stops

08:00 - 22:35

PDX

ADL

22h 05m

2 stops

$2,258Multiple Airlines

Tue, 8 Sep - Sat, 12 Sep

20:00 - 19:11

ADL

PDX

39h 41m

2 stops

19:45 - 11:10

PDX

ADL

22h 55m

2 stops

$2,807Air Canada

Tue, 7 Jul - Tue, 14 Jul

Singapore Airlines flights from Adelaide to State of Washington

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

Singapore Airlines

3 Nov

ADL10:15Adelaide

39h 25m

1 stop

SEA07:10Seattle/Tacoma Intl

24 Nov

SEA08:45Seattle/Tacoma Intl

38h 05m

1 stop

ADL17:20Adelaide

$1,644

Singapore Airlines

3 Nov

ADL18:20Adelaide

31h 20m

2 stops

SEA07:10Seattle/Tacoma Intl

24 Nov

SEA08:45Seattle/Tacoma Intl

38h 05m

1 stop

ADL17:20Adelaide

$2,011

Singapore Airlines

17 July

ADL17:35Adelaide

55h 40m

1 stop

SEA08:45Seattle/Tacoma Intl

30 July

SEA10:15Seattle/Tacoma Intl

37h 35m

1 stop

ADL16:20Adelaide

$2,720

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

ADL14:25Adelaide

24h 46m

2 stops

SEA22:41Seattle/Tacoma Intl

5 Aug

SEA17:10Seattle/Tacoma Intl

26h 15m

2 stops

ADL11:55Adelaide

$1,676

Qantas Airways

17 July

ADL17:10Adelaide

45h 05m

2 stops

SEA21:45Seattle/Tacoma Intl

30 July

SEA14:20Seattle/Tacoma Intl

29h 05m

2 stops

ADL11:55Adelaide

$1,922

Qantas Airways

17 July

ADL19:10Adelaide

43h 05m

2 stops

SEA21:45Seattle/Tacoma Intl

30 July

SEA14:20Seattle/Tacoma Intl

29h 05m

2 stops

ADL11:55Adelaide

$1,923

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 3/11

10:15-07:10

1 stop39h 25m

Seattle/Tacoma Intl

Tue 24/11

08:45-17:20

1 stop38h 05m

$1,644

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

14:25-22:41

2 stops24h 46m

Seattle/Tacoma Intl

Wed 5/8

17:10-11:55

2 stops26h 15m

$1,676

Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 3/11

06:10-09:17

2 stops21h 37m

Seattle/Tacoma Intl

Tue 24/11

19:05-16:20

2 stops26h 45m

$1,700

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 1/7

06:05-19:03

2 stops29h 28m

Seattle/Tacoma Intl

Mon 27/7

17:04-15:45

2 stops30h 11m

$1,787

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:10-21:45

2 stops45h 05m

Seattle/Tacoma Intl

Thu 30/7

14:20-11:55

2 stops29h 05m

$1,922

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

19:10-21:45

2 stops43h 05m

Seattle/Tacoma Intl

Thu 30/7

14:20-11:55

2 stops29h 05m

$1,923

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

$1,947

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 4/6

12:35-19:16

2 stops23h 11m

Seattle/Tacoma Intl

Fri 26/6

20:42-11:35

2 stops46h 23m

$2,007

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Tue 8/9

06:00-20:46

2 stops31h 16m

Portland

Sat 12/9

08:00-22:35

2 stops22h 05m

$2,258

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Tue 7/7

20:00-19:11

2 stops39h 41m

Portland

Tue 14/7

19:45-11:10

2 stops22h 55m

$2,807

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

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 37m
Direct flights	None

The fastest flight from Adelaide to State of Washington takes 21h 37m

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 May 2026, there are 4 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 11,090 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,163	Free cancellation	Rating 7.5 1,042 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $1,469	Free cancellation	Rating 7.4 9,753 reviews	Search United Airlines flights
Virgin Australia	PriceFrom $1,508	Free cancellation	Rating 7.6 458 reviews	Search Virgin Australia 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.