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

ANA and Qantas Airways are the most popular carriers operating from Washington to Adelaide

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

Prices for flights from Washington to Adelaide Airport were last updated today.

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

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 Washington to Adelaide Airport.

What documentation or ID do you need to fly to Adelaide Airport?

The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$1,002 Cheap Flights from Washington to Adelaide in 2025/26

1 adult

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Find the cheapest flights from Washington to Adelaide

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

20:00 - 18:50

SEA

ADL

28h 20m2 stops

06:10 - 14:31

ADL

SEA

26h 51m2 stops

$1,457Multiple Airlines

Wed, 4 Feb - Wed, 11 Feb

20:00 - 22:30

SEA

ADL

32h 00m2 stops

06:10 - 09:15

ADL

SEA

21h 35m2 stops

$1,528Air Canada

Tue, 3 Feb - Tue, 10 Feb

05:50 - 19:10

SEA

ADL

42h 50m2 stops

19:55 - 09:15

ADL

SEA

31h 50m2 stops

$1,645Air Canada

Sat, 21 Feb - Tue, 24 Feb

17:06 - 11:35

SEA

ADL

25h 59m2 stops

12:35 - 22:12

ADL

SEA

26h 07m2 stops

$1,900Multiple Airlines

Sat, 9 May - Sat, 16 May

19:30 - 13:00

SEA

ADL

23h 00m2 stops

14:55 - 21:12

ADL

SEA

24h 47m1 stop

$2,074United Airlines

Wed, 4 Feb - Wed, 11 Feb

09:25 - 14:10

SEA

ADL

34h 15m2 stops

07:15 - 21:12

ADL

SEA

32h 27m3 stops

$2,085United Airlines

Tue, 3 Feb - Tue, 10 Feb

15:45 - 08:15

SEA

ADL

46h 00m2 stops

12:35 - 22:17

ADL

SEA

28h 12m2 stops

$2,236Multiple Airlines

Sun, 11 Jan - Mon, 19 Jan

16:30 - 11:30

SEA

ADL

50h 30m2 stops

21:40 - 12:45

ADL

SEA

31h 35m1 stop

$2,355Qatar Airways

Sat, 9 May - Sat, 16 May

15:45 - 10:55

SEA

ADL

24h 40m2 stops

07:50 - 18:57

ADL

SEA

29h 37m2 stops

$2,472Qantas Airways

Tue, 13 Jan - Sat, 28 Feb

10:15 - 16:20

SEA

ADL

37h 35m1 stop

17:35 - 08:45

ADL

SEA

31h 40m1 stop

$2,473Singapore Airlines

Sat, 9 May - Sat, 16 May

Air Canada flights from State of Washington to Adelaide

Our best Air Canada deals on State of Washington to Adelaide flight tickets

Air Canada

3 Feb

SEA20:00Seattle/Tacoma Intl

32h 00m

2 stops

ADL22:30Adelaide

10 Feb

ADL06:10Adelaide

21h 35m

2 stops

SEA09:15Seattle/Tacoma Intl

$1,528

Find similar

Air Canada

21 Feb

SEA05:50Seattle/Tacoma Intl

42h 50m

2 stops

ADL19:10Adelaide

24 Feb

ADL19:55Adelaide

31h 50m

2 stops

SEA09:15Seattle/Tacoma Intl

$1,645

Find similar

United Airlines flights from State of Washington to Adelaide

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

United Airlines

4 Feb

SEA19:30Seattle/Tacoma Intl

23h 00m

2 stops

ADL13:00Adelaide

11 Feb

ADL14:55Adelaide

24h 47m

1 stop

SEA21:12Seattle/Tacoma Intl

$2,074

Find similar

United Airlines

3 Feb

SEA09:25Seattle/Tacoma Intl

34h 15m

2 stops

ADL14:10Adelaide

10 Feb

ADL07:15Adelaide

32h 27m

3 stops

SEA21:12Seattle/Tacoma Intl

$2,085

Find similar

United Airlines

21 Feb

SEA17:20Seattle/Tacoma Intl

21h 40m

1 stop

ADL09:30Adelaide

24 Feb

ADL08:30Adelaide

28h 26m

2 stops

SEA18:26Seattle/Tacoma Intl

$2,797

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 4/2

20:00-18:50

2 stops28h 20m

Adelaide

Wed 11/2

06:10-14:31

2 stops26h 51m

$1,457

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 3/2

20:00-22:30

2 stops32h 00m

Adelaide

Tue 10/2

06:10-09:15

2 stops21h 35m

$1,528

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 21/2

05:50-19:10

2 stops42h 50m

Adelaide

Tue 24/2

19:55-09:15

2 stops31h 50m

$1,645

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 9/5

17:06-11:35

2 stops25h 59m

Adelaide

Sat 16/5

12:35-22:12

2 stops26h 07m

$1,900

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 4/2

19:30-13:00

2 stops23h 00m

Adelaide

Wed 11/2

14:55-21:12

1 stop24h 47m

$2,074

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 3/2

09:25-14:10

2 stops34h 15m

Adelaide

Tue 10/2

07:15-21:12

3 stops32h 27m

$2,085

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 11/1

15:45-08:15

2 stops46h 00m

Adelaide

Mon 19/1

12:35-22:17

2 stops28h 12m

$2,236

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 9/5

16:30-11:30

2 stops50h 30m

Adelaide

Sat 16/5

21:40-12:45

1 stop31h 35m

$2,355

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 13/1

15:45-10:55

2 stops24h 40m

Adelaide

Sat 28/2

07:50-18:57

2 stops29h 37m

$2,472

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 9/5

10:15-16:20

1 stop37h 35m

Adelaide

Sat 16/5

17:35-08:45

1 stop31h 40m

$2,473

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 State of Washington to Adelaide

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 day to depart on your flight to Adelaide?

According to our data, Monday is the cheapest day to fly to Adelaide from State of Washington. The lowest ticket price found for a Monday departure recently was $2,109. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $2,194. These prices are subject to change though, so be sure to set up a Price Alert for flights to Adelaide.

Cheap State of Washington to Adelaide flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Adelaide

Fastest flight time	19h 30m
Direct flights	None

The fastest flight from State of Washington to Adelaide takes 19h 30m

There are no direct flights from State of Washington to Adelaide. There are no popular flight routes from State of Washington to Adelaide.

Search flight deals

When did momondo last update prices for flights from Washington to Adelaide Airport?
Prices for flights from Washington to Adelaide Airport were last updated today.
How old do you have to be to fly from Washington to Adelaide Airport?
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 Washington to Adelaide Airport.
What documentation or ID do you need to fly to Adelaide Airport?
The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Glenelg

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Adelaide. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Adelaide from Washington which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Adelaide.

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

Price alerts on flights to Adelaide from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.