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Cheap flights from Seattle to Perth from $514

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Perth departing on 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Perth

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Perth that have been recently found on momondo from popular airlines, departing in the coming months.
2:55 pm - 4:10 pmSEA-PER
34h 15m2 stops
11:35 pm - 9:21 amPER-SEA
24h 46m2 stops
$1,192Air Canada
Find Deal
Mon, May 26 - Mon, Jun 30
10:15 am - 5:10 pmSEA-PER
39h 55m1 stop
11:35 pm - 4:10 pmPER-SEA
31h 35m2 stops
$1,264
Find Deal
Sun, Apr 6 - Sun, Apr 13
10:15 am - 5:10 pmSEA-PER
39h 55m1 stop
11:35 pm - 4:10 pmPER-SEA
31h 35m2 stops
$1,269
Find Deal
Sun, Apr 6 - Sun, Apr 13
4:30 pm - 6:40 pmSEA-PER
35h 10m1 stop
10:45 pm - 8:00 pmPER-SEA
36h 15m2 stops
$1,387Qatar Airways
Find Deal
Wed, May 14 - Fri, May 23
7:00 am - 6:40 pmSEA-PER
44h 40m2 stops
10:45 pm - 8:00 pmPER-SEA
36h 15m2 stops
$1,407Qatar Airways
Find Deal
Wed, May 14 - Fri, May 23
5:05 pm - 2:40 pmSEA-PER
30h 35m2 stops
5:15 pm - 11:49 amPER-SEA
33h 34m2 stops
$1,443United Airlines
Find Deal
Fri, Apr 11 - Sat, Apr 26
2:50 pm - 2:40 pmSEA-PER
32h 50m2 stops
11:45 pm - 6:48 pmPER-SEA
34h 03m2 stops
$1,447United Airlines
Find Deal
Sun, May 25 - Tue, Jul 1
9:40 am - 11:55 pmSEA-PER
23h 15m1 stop
1:50 pm - 9:55 amPER-SEA
35h 05m2 stops
$1,520Singapore Airlines
Find Deal
Thu, Mar 20 - Thu, Mar 27
9:40 am - 5:25 amSEA-PER
28h 45m1 stop
1:10 am - 9:55 amPER-SEA
47h 45m2 stops
$1,534Singapore Airlines
Find Deal
Thu, Mar 20 - Wed, Mar 26
9:15 pm - 10:45 pmSEA-PER
58h 30m2 stops
12:15 am - 5:32 pmPER-SEA
32h 17m2 stops
$1,719Cathay Pacific
Find Deal
Sat, Mar 22 - Fri, Mar 28

United Airlines flights from Seattle to Perth

Our best United Airlines deals on Seattle to Perth flight tickets
United Airlines
Apr 11
SEA5:05 pmSeattle/Tacoma Intl
30h 35m
2 stops
PER2:40 pmPerth
Apr 26
PER5:15 pmPerth
33h 34m
2 stops
SEA11:49 amSeattle/Tacoma Intl
United Airlines
May 25
SEA2:50 pmSeattle/Tacoma Intl
32h 50m
2 stops
PER2:40 pmPerth
Jul 1
PER11:45 pmPerth
34h 03m
2 stops
SEA6:48 pmSeattle/Tacoma Intl
United Airlines
May 27
SEA5:40 pmSeattle/Tacoma Intl
30h 00m
2 stops
PER2:40 pmPerth
Jun 29
PER11:55 pmPerth
28h 36m
2 stops
SEA1:31 pmSeattle/Tacoma Intl

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets
Qatar Airways
Mar 2
SEA4:05 pmSeattle/Tacoma Intl
34h 40m
1 stop
PER6:45 pmPerth
Mar 16
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
Qatar Airways
Mar 2
SEA4:05 pmSeattle/Tacoma Intl
34h 40m
1 stop
PER6:45 pmPerth
Mar 8
PER10:45 pmPerth
28h 55m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Qatar Airways
Mar 1
SEA4:05 pmSeattle/Tacoma Intl
34h 40m
1 stop
PER6:45 pmPerth
Mar 18
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl

See travel insights to Perth from

How to get the cheapest flight ticket from Seattle to Perth

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 Perth?

In general, February is the cheapest month to fly from Seattle to Perth. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,322. If you are unable to visit Perth during the month of February, then departing from Seattle during the month October is also very affordable. Most momondo users find prices during this month for around $1,426.

What is the cheapest day to depart on your flight to Perth?

The cheapest day to depart on your flight to Perth is on a Sunday when prices can be found for as low as $1,482. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Friday, with ticket prices averaging around $1,858.

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

In the evening is the cheapest time of day to fly from Seattle to Perth when you can find flight prices for as low as $1,497. Flying to Perth in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,690. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Perth?

You are more likely to see cheaper flights to Perth from Seattle when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Perth for around $1,655 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Perth from Seattle for as low as $1,255 on momondo.

How have Seattle to Perth flight prices changed over time?

As of February 2025, prices for Seattle to Perth flights are approximately 20% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Perth

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Perth according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Perth (SEA to PER) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Perth

Best Price Found

$514

Fastest flight time

22h 40m

Direct flights

None

Airports in Perth

1 airport
The best one-way flight to Perth from Seattle in the past 72 hours is $514. The best round-trip flight deal from Seattle to Perth found on momondo in the last 72 hours is $1,192.
The fastest flight from Seattle to Perth takes 22h 40m
There are no direct flights from Seattle to Perth. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Perth Airport.
There is 1 airport near Perth: Perth (PER)

  • How far is Seattle/Tacoma Intl to Perth by plane?

    There are 9239.1 mi between Seattle/Tacoma Intl and Perth. 22h 40m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Perth Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Perth Airport were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Perth Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Perth Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Perth Airport.

  • What documentation or ID do you need to fly to Perth Airport?

    The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Perth?


Best airlines flying from Seattle to Perth

Compare and see reviews for airlines that fly from Seattle to Perth with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $1,165Free CancellationRating
7.0
8,748 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $1,210Free CancellationRating
8.1
1,301 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $1,325Free CancellationRating
7.4
3,612 reviews
Search Qatar Airways flights
Qantas AirwaysPriceFrom $1,597Free CancellationRating
7.4
817 reviews
Search Qantas Airways flights

Traveling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
Mandurah
Fremantle
Scarborough
Waikiki
Rottnest Island

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Perth?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Perth. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Perth with flexible booking policies on momondo?

Flights from Seattle to Perth 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 Seattle to Perth?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Perth from Seattle.

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

Price alerts on flights to Perth from Seattle 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.


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