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

Cathay Pacific, United Airlines, and Qatar Airways are the most popular carriers operating from Adelaide to Washington

Which airlines fly to State of Washington?

Air Canada, Qantas Airways and United Airlines 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 26% 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.

$1,472 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.

13:25 - 21:02

ADL

SEA

24h 07m

2 stops

17:10 - 11:55

SEA

ADL

26h 15m

2 stops

$1,680Qantas Airways

Wed, 15 Jul - Wed, 29 Jul

17:10 - 22:41

ADL

SEA

22h 01m

2 stops

18:10 - 11:55

SEA

ADL

25h 15m

2 stops

$1,682Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

17:10 - 21:02

ADL

SEA

44h 22m

2 stops

18:10 - 13:40

SEA

ADL

27h 00m

2 stops

$1,821Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

17:10 - 21:02

ADL

SEA

44h 22m

2 stops

18:10 - 11:05

SEA

ADL

24h 25m

2 stops

$1,823Qantas Airways

Tue, 21 Jul - Wed, 5 Aug

06:05 - 21:10

ADL

SEA

31h 35m

3 stops

08:35 - 10:05

SEA

ADL

33h 00m

2 stops

$1,824United Airlines

Wed, 15 Jul - Wed, 29 Jul

06:40 - 14:30

ADL

SEA

24h 20m

2 stops

15:33 - 11:05

SEA

ADL

27h 02m

2 stops

$1,972United Airlines

Fri, 17 Jul - Thu, 30 Jul

06:40 - 14:30

ADL

SEA

24h 20m

2 stops

10:29 - 11:05

SEA

ADL

32h 06m

2 stops

$1,978United Airlines

Fri, 17 Jul - Thu, 30 Jul

19:35 - 15:45

ADL

SEA

60h 40m

2 stops

00:10 - 08:10

SEA

ADL

39h 30m

2 stops

$2,177Multiple Airlines

Wed, 15 Jul - Tue, 28 Jul

19:35 - 15:45

ADL

SEA

60h 40m

2 stops

00:10 - 19:40

SEA

ADL

51h 00m

3 stops

$2,274Multiple Airlines

Wed, 15 Jul - Tue, 28 Jul

19:45 - 23:56

ADL

PDX

44h 41m

3 stops

07:00 - 13:35

PDX

ADL

38h 05m

3 stops

$4,194Cathay Pacific

Wed, 10 Jun - Tue, 16 Jun

Qantas Airways flights from Adelaide to State of Washington

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

Qantas Airways

15 July

ADL13:25Adelaide

24h 07m

2 stops

SEA21:02Seattle/Tacoma Intl

29 July

SEA17:10Seattle/Tacoma Intl

26h 15m

2 stops

ADL11:55Adelaide

$1,680

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

$1,682

Qantas Airways

21 July

ADL17:10Adelaide

44h 22m

2 stops

SEA21:02Seattle/Tacoma Intl

5 Aug

SEA18:10Seattle/Tacoma Intl

27h 00m

2 stops

ADL13:40Adelaide

$1,821

Singapore Airlines flights from Adelaide to State of Washington

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

Singapore Airlines

17 July

ADL17:35Adelaide

31h 40m

1 stop

SEA08:45Seattle/Tacoma Intl

30 July

SEA10:15Seattle/Tacoma Intl

37h 35m

1 stop

ADL16:20Adelaide

$2,603

Singapore Airlines

17 July

ADL17:35Adelaide

31h 40m

1 stop

SEA08:45Seattle/Tacoma Intl

30 July

SEA10:15Seattle/Tacoma Intl

28h 40m

1 stop

ADL07:25Adelaide

$2,604

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

$2,653

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

13:25-21:02

2 stops24h 07m

Seattle/Tacoma Intl

Wed 29/7

17:10-11:55

2 stops26h 15m

$1,680

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

$1,682

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

17:10-21:02

2 stops44h 22m

Seattle/Tacoma Intl

Wed 5/8

18:10-13:40

2 stops27h 00m

$1,821

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

17:10-21:02

2 stops44h 22m

Seattle/Tacoma Intl

Wed 5/8

18:10-11:05

2 stops24h 25m

$1,823

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

06:05-21:10

3 stops31h 35m

Seattle/Tacoma Intl

Wed 29/7

08:35-10:05

2 stops33h 00m

$1,824

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:40-14:30

2 stops24h 20m

Seattle/Tacoma Intl

Thu 30/7

15:33-11:05

2 stops27h 02m

$1,972

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:40-14:30

2 stops24h 20m

Seattle/Tacoma Intl

Thu 30/7

10:29-11:05

2 stops32h 06m

$1,978

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

19:35-15:45

2 stops60h 40m

Seattle/Tacoma Intl

Tue 28/7

00:10-08:10

2 stops39h 30m

$2,177

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

19:35-15:45

2 stops60h 40m

Seattle/Tacoma Intl

Tue 28/7

00:10-19:40

3 stops51h 00m

$2,274

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Wed 10/6

19:45-23:56

3 stops44h 41m

Portland

Tue 16/6

07:00-13:35

3 stops38h 05m

$4,194

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 $856.

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	24h 07m
Direct flights	None

The fastest flight from Adelaide to State of Washington takes 24h 07m

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 $1,163	Free cancellation	Rating 7.1 11,046 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,164	Free cancellation	Rating 7.5 1,037 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $1,470	Free cancellation	Rating 7.4 9,727 reviews	Search United Airlines flights
Virgin Australia	PriceFrom $1,510	Free cancellation	Rating 7.6 454 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.