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.

$1,675 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

Cheap return flights

Enter your travel dates to find the best prices.

20:00 - 21:34

ADL

SEA

42h 04m

2 stops

08:00 - 22:35

SEA

ADL

22h 05m

2 stops

$1,675Multiple Airlines

Wed, 12 Aug - Mon, 17 Aug

20:00 - 21:34

ADL

SEA

42h 04m

2 stops

20:52 - 08:10

SEA

ADL

42h 48m

2 stops

$1,695Multiple Airlines

Mon, 10 Aug - Wed, 26 Aug

20:00 - 21:34

ADL

SEA

42h 04m

2 stops

20:52 - 22:35

SEA

ADL

33h 13m

2 stops

$1,698Multiple Airlines

Wed, 12 Aug - Sun, 23 Aug

19:10 - 23:53

ADL

SEA

45h 13m

2 stops

07:20 - 22:35

SEA

ADL

22h 45m

2 stops

$1,746Multiple Airlines

Fri, 4 Sep - Fri, 11 Sep

09:15 - 21:59

ADL

PDX

29h 14m

2 stops

13:53 - 11:55

PDX

ADL

29h 32m

2 stops

$1,787Multiple Airlines

Tue, 18 Aug - Mon, 24 Aug

12:40 - 08:00

ADL

SEA

35h 50m

2 stops

20:52 - 22:35

SEA

ADL

33h 13m

2 stops

$1,798Multiple Airlines

Sun, 16 Aug - Sun, 23 Aug

08:40 - 23:16

ADL

SEA

33h 06m

2 stops

19:32 - 21:00

SEA

ADL

30h 58m

2 stops

$1,823Virgin Australia

Wed, 25 Nov - Tue, 15 Dec

08:40 - 12:20

ADL

SEA

22h 10m

2 stops

10:45 - 16:20

SEA

ADL

35h 05m

2 stops

$1,843United Airlines

Tue, 24 Nov - Tue, 15 Dec

06:00 - 16:27

ADL

SEA

28h 57m

3 stops

13:16 - 16:20

SEA

ADL

32h 34m

2 stops

$1,844United Airlines

Tue, 24 Nov - Tue, 15 Dec

17:50 - 15:39

ADL

SEA

38h 19m

3 stops

13:16 - 11:10

SEA

ADL

29h 24m

2 stops

$1,854Virgin Australia

Mon, 10 Aug - Wed, 26 Aug

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United Airlines flights from Adelaide to State of Washington

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

United Airlines

24 Nov

ADL08:40Adelaide

22h 10m

2 stops

SEA12:20Seattle/Tacoma Intl

15 Dec

SEA10:45Seattle/Tacoma Intl

35h 05m

2 stops

ADL16:20Adelaide

$1,843

United Airlines

24 Nov

ADL06:00Adelaide

28h 57m

3 stops

SEA16:27Seattle/Tacoma Intl

15 Dec

SEA13:16Seattle/Tacoma Intl

32h 34m

2 stops

ADL16:20Adelaide

$1,844

United Airlines

23 Nov

ADL06:10Adelaide

24h 40m

2 stops

SEA12:20Seattle/Tacoma Intl

21 Dec

SEA09:02Seattle/Tacoma Intl

29h 58m

1 stop

ADL09:30Adelaide

$1,866

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

ADL14:50Adelaide

34h 50m

2 stops

SEA07:10Seattle/Tacoma Intl

11 Dec

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,228

Singapore Airlines

24 Nov

ADL14:50Adelaide

34h 50m

2 stops

SEA07:10Seattle/Tacoma Intl

11 Dec

SEA08:45Seattle/Tacoma Intl

29h 35m

1 stop

ADL08:50Adelaide

$2,232

Singapore Airlines

24 Nov

ADL10:15Adelaide

39h 25m

1 stop

SEA07:10Seattle/Tacoma Intl

11 Dec

SEA08:45Seattle/Tacoma Intl

38h 05m

1 stop

ADL17:20Adelaide

$2,248

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 12/8

20:00-21:34

2 stops42h 04m

Seattle/Tacoma Intl

Mon 17/8

08:00-22:35

2 stops22h 05m

$1,675

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 10/8

20:00-21:34

2 stops42h 04m

Seattle/Tacoma Intl

Wed 26/8

20:52-08:10

2 stops42h 48m

$1,695

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 12/8

20:00-21:34

2 stops42h 04m

Seattle/Tacoma Intl

Sun 23/8

20:52-22:35

2 stops33h 13m

$1,698

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 4/9

19:10-23:53

2 stops45h 13m

Seattle/Tacoma Intl

Fri 11/9

07:20-22:35

2 stops22h 45m

$1,746

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Tue 18/8

09:15-21:59

2 stops29h 14m

Portland

Mon 24/8

13:53-11:55

2 stops29h 32m

$1,787

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sun 16/8

12:40-08:00

2 stops35h 50m

Seattle/Tacoma Intl

Sun 23/8

20:52-22:35

2 stops33h 13m

$1,798

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 25/11

08:40-23:16

2 stops33h 06m

Seattle/Tacoma Intl

Tue 15/12

19:32-21:00

2 stops30h 58m

$1,823

Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

08:40-12:20

2 stops22h 10m

Seattle/Tacoma Intl

Tue 15/12

10:45-16:20

2 stops35h 05m

$1,843

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:00-16:27

3 stops28h 57m

Seattle/Tacoma Intl

Tue 15/12

13:16-16:20

2 stops32h 34m

$1,844

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 10/8

17:50-15:39

3 stops38h 19m

Seattle/Tacoma Intl

Wed 26/8

13:16-11:10

2 stops29h 24m

$1,854

Flights are sorted by cheapest return flights first.

Sorted 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

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	21h 57m
Direct flights	None

The fastest flight from Adelaide to State of Washington takes 21h 57m

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 $1,192	Free cancellation	Rating 7.1 11,371 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.