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

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

Which airlines fly to State of Washington?

Virgin Australia, Qantas Airways and Singapore Airlines are the top three most popular airlines that fly to State of Washington from Adelaide according to our data. Virgin Australia is the first choice among our users, with 34% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 6 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 November 2025, there are 6 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.

$1,437 Cheap Flights from Adelaide to Washington in 2025/26

1 adult

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Find the cheapest flights from Adelaide to Washington

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One-way

Cheap return flights

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13:55 - 18:27ADL-SEA

22h 02m1 stop

19:10 - 08:30SEA-ADL

43h 50m2 stops

$1,452United Airlines

Find Deal

Wed, 11 Mar - Sun, 15 Mar

13:55 - 16:14ADL-SEA

19h 49m1 stop

19:10 - 08:30SEA-ADL

43h 50m2 stops

$1,460United Airlines

Find Deal

Wed, 11 Mar - Sun, 15 Mar

06:10 - 09:15ADL-PDX

20h 35m2 stops

19:00 - 13:55PDX-ADL

25h 25m2 stops

$1,557Air Canada

Find Deal

Thu, 12 Mar - Sun, 15 Mar

14:55 - 14:46ADL-PDX

18h 21m1 stop

15:46 - 14:10PDX-ADL

27h 54m2 stops

$1,862Virgin Australia

Find Deal

Sat, 17 Jan - Tue, 27 Jan

10:15 - 08:10ADL-SEA

39h 25m1 stop

09:45 - 08:50SEA-ADL

29h 35m1 stop

$1,924Singapore Airlines

Find Deal

Wed, 11 Mar - Sun, 15 Mar

10:15 - 08:10ADL-SEA

39h 25m1 stop

09:45 - 08:50SEA-ADL

29h 35m1 stop

$1,927Singapore Airlines

Find Deal

Wed, 11 Mar - Sun, 15 Mar

06:00 - 22:06ADL-SEA

33h 36m2 stops

10:05 - 13:55SEA-ADL

34h 20m2 stops

$2,213Air Canada

Find Deal

Wed, 11 Mar - Sun, 15 Mar

19:00 - 14:24ADL-SEA

37h 54m2 stops

17:53 - 13:40SEA-ADL

25h 17m2 stops

$2,375Qantas Airways

Find Deal

Mon, 15 Dec - Tue, 20 Jan

19:00 - 14:24ADL-SEA

37h 54m2 stops

15:45 - 10:55SEA-ADL

24h 40m2 stops

$2,393Qantas Airways

Find Deal

Mon, 15 Dec - Tue, 20 Jan

14:55 - 22:46ADL-PDX

26h 21m1 stop

19:45 - 09:30PDX-ADL

19h 15m1 stop

$2,805Virgin Australia

Find Deal

Sat, 20 Dec - Sat, 27 Dec

United Airlines flights from Adelaide to State of Washington

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

United Airlines

11 Mar

ADL13:55Adelaide

22h 02m

1 stop

SEA18:27Seattle/Tacoma Intl

15 Mar

SEA19:10Seattle/Tacoma Intl

43h 50m

2 stops

ADL08:30Adelaide

$1,452

Find similar

United Airlines

11 Mar

ADL13:55Adelaide

19h 49m

1 stop

SEA16:14Seattle/Tacoma Intl

15 Mar

SEA19:10Seattle/Tacoma Intl

43h 50m

2 stops

ADL08:30Adelaide

$1,460

Find similar

United Airlines

11 Mar

ADL13:55Adelaide

19h 49m

1 stop

SEA16:14Seattle/Tacoma Intl

15 Mar

SEA23:59Seattle/Tacoma Intl

39h 01m

2 stops

ADL08:30Adelaide

$2,373

Find similar

American Airlines flights from Adelaide to State of Washington

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

American Airlines

11 Mar

ADL06:25Adelaide

29h 54m

2 stops

SEA18:49Seattle/Tacoma Intl

15 Mar

SEA19:19Seattle/Tacoma Intl

45h 01m

2 stops

ADL09:50Adelaide

$1,503

Find similar

American Airlines

11 Mar

ADL06:25Adelaide

29h 54m

2 stops

SEA18:49Seattle/Tacoma Intl

15 Mar

SEA19:19Seattle/Tacoma Intl

45h 01m

2 stops

ADL09:50Adelaide

$1,512

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

13:55-18:27

1 stop22h 02m

Seattle/Tacoma Intl

Sun 15/3

19:10-08:30

2 stops43h 50m

$1,452

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

13:55-16:14

1 stop19h 49m

Seattle/Tacoma Intl

Sun 15/3

19:10-08:30

2 stops43h 50m

$1,460

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Thu 12/3

06:10-09:15

2 stops20h 35m

Portland

Sun 15/3

19:00-13:55

2 stops25h 25m

$1,557

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Sat 17/1

14:55-14:46

1 stop18h 21m

Portland

Tue 27/1

15:46-14:10

2 stops27h 54m

$1,862

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

10:15-08:10

1 stop39h 25m

Seattle/Tacoma Intl

Sun 15/3

09:45-08:50

1 stop29h 35m

$1,924

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

10:15-08:10

1 stop39h 25m

Seattle/Tacoma Intl

Sun 15/3

09:45-08:50

1 stop29h 35m

$1,927

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

06:00-22:06

2 stops33h 36m

Seattle/Tacoma Intl

Sun 15/3

10:05-13:55

2 stops34h 20m

$2,213

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

19:00-14:24

2 stops37h 54m

Seattle/Tacoma Intl

Tue 20/1

17:53-13:40

2 stops25h 17m

$2,375

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

19:00-14:24

2 stops37h 54m

Seattle/Tacoma Intl

Tue 20/1

15:45-10:55

2 stops24h 40m

$2,393

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Sat 20/12

14:55-22:46

1 stop26h 21m

Portland

Sat 27/12

19:45-09:30

1 stop19h 15m

$2,805

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 November is, on average, the cheapest month to fly to State of Washington from Adelaide, with most prices found around $1,469. If you aren’t able to travel during the month of November, then book flights to State of Washington from Adelaide during January instead. Flights to State of Washington in January, while not as cheap as those in November, still average around $1,660.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart on your flight to State of Washington is on a Tuesday when prices can be found for as low as $1,619. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Sunday is $2,352.

What is the cheapest time of day to depart on your flight to State of Washington?

In the afternoon is the cheapest time of day to fly from Adelaide to State of Washington when you can find flight prices for as low as $1,801. Flying to State of Washington in the afternoon is an ideal time because this is during off-peak travel hours. Flights at midday are often more expensive, with an average ticket price of $2,414.

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

You could potentially save up to 8% 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

Direct flights	None

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

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 November 2025, there are 6 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 New Zealand	PriceFrom $944	Free cancellation	Rating 8.0 526 reviews	Search Air New Zealand flights
Qantas Airways	PriceFrom $1,380	Free cancellation	Rating 7.5 929 reviews	Search Qantas Airways flights
Singapore Airlines	PriceFrom $1,432	Free cancellation	Rating 8.1 1,393 reviews	Search Singapore Airlines flights
Air Canada	PriceFrom $1,484	Free cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights
Virgin Australia	PriceFrom $1,753	Free cancellation	Rating 7.6 424 reviews	Search Virgin Australia flights
United Airlines	PriceFrom $1,755	Free cancellation	Rating 7.4 9,007 reviews	Search United Airlines 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.

An easier way to manage your State of Washington trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Popular Cities in Washington

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Cheap flights from Adelaide to Washington from $1,452

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Adelaide to Washington departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Adelaide to Washington

Cheap return flights

Cheap one-way flights

United Airlines flights from Adelaide to State of Washington

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

American Airlines flights from Adelaide to State of Washington

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

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Use the filters below to find and compare flights from Adelaide to Washington that are best for you.

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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

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

What is the cheapest day to depart on your flight to State of Washington?

What is the cheapest time of day to depart on your flight to State of Washington?

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

You could potentially save up to 8% on your flight if you consider stops on a Adelaide to State of Washington flight.

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

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

Which airlines fly to State of Washington?

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

Direct flights

When did momondo last update prices for flights from Adelaide Airport to Washington?

How many operators does momondo search for flights from Adelaide Airport to Washington?

How old do you have to be to fly from Adelaide Airport to Washington?

What documentation or ID do you need to fly to Washington?

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

Why use momondo?

Why should I use momondo to find a flight deal from Adelaide to Washington?

Can I find flights from Adelaide to Washington with flexible booking policies on momondo?

How can momondo help me find flights from Adelaide to Washington?

I’m not ready to book a flight from Adelaide to Washington right now. Can momondo alert me if prices change?

An easier way to manage your State of Washington trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

Popular Cities in Washington

Popular flights according to clicks in the last 7 days on momondo