$572+ Cheap flights from Seattle (SEA) to Perth (PER)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Perth with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Perth
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to PerthExplore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This lastminute.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:25 pm -
1 stop27h 25m
Wed 9/168:20 am -
1 stop40h 45m
Deal found 8/30![Cathay Pacific logo]()
$1,161
This FlightHub deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm -
1 stop43h 15m
Mon 9/2812:10 am -
1 stop24h 55m
Deal found 9/1![Cathay Pacific logo]()
$1,231
This Bravofly deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:50 am -
1 stop28h 05m
Fri 10/3012:25 am -
1 stop24h 20m
Deal found 8/31![Cathay Pacific logo]()
$1,241
This SmartFares deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:45 am -
1 stop28h 05m
Sun 10/2512:25 am -
1 stop24h 20m
Deal found 9/3![Cathay Pacific logo]()
$1,249
This Cathay Pacific deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:40 am -
2 stops31h 10m
Wed 9/168:20 am -
1 stop40h 45m
Deal found 8/30![Multiple Airlines logo]()
$1,258
This Cathay Pacific deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm -
1 stop43h 15m
Tue 9/298:20 am -
2 stops29h 39m
Deal found 9/2![Multiple Airlines logo]()
$1,264
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:40 pm -
2 stops36h 15m
Thu 10/295:50 pm -
1 stop29h 15m
Deal found 9/3![Multiple Airlines logo]()
$1,276
This Justfly.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:25 pm -
1 stop27h 25m
Fri 10/212:10 am -
1 stop24h 55m
Deal found 9/2![Cathay Pacific logo]()
$1,281
Best flights from Seattle to PerthDiscover carefully curated flight deals from Seattle to Perth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Seattle to Perth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This SmartFares deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:45 am -
1 stop28h 05m
Mon 10/128:20 am -
1 stop40h 45m
Deal found 9/3![Cathay Pacific logo]()
$1,324
This Cathay Pacific deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:09 pm -
2 stops35h 31m
Sat 10/318:30 am -
2 stops39h 52m
Deal found 9/1![Multiple Airlines logo]()
$1,352
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:20 pm -
2 stops34h 25m
Mon 1/47:20 am -
2 stops27h 09m
Deal found 9/2![United Airlines logo]()
$1,538
This Singapore Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/319:40 am -
1 stop35h 55m
Mon 11/21:20 am -
1 stop21h 45m
Deal found 9/1![Singapore Airlines logo]()
$1,607
This FlightHub deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:25 pm -
1 stop35h 10m
Sun 10/2510:45 pm -
1 stop28h 55m
Deal found 8/30![Qatar Airways logo]()
$1,768
This Cathay Pacific deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:39 am -
2 stops33h 11m
Sun 10/2512:25 am -
2 stops30h 39m
Deal found 9/3![Multiple Airlines logo]()
$1,355
This Cathay Pacific deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:10 am -
2 stops33h 40m
Sun 10/258:30 am -
1 stop40h 15m
Deal found 8/31![Multiple Airlines logo]()
$1,359
This Qatar Airways deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:07 am -
2 stops41h 38m
Tue 11/310:45 pm -
1 stop28h 55m
Deal found 9/2![Qatar Airways logo]()
$1,865
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/143:30 pm -
2 stops31h 15m
Wed 1/67:20 am -
2 stops26h 47m
Deal found 9/3![United Airlines logo]()
$1,916
Last-minute flights from Seattle to PerthDiscover last-minute flight deals from Seattle to Perth. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Perth. Data last updated September 4, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:25 pm -
1 stop27h 25m
Wed 9/168:20 am -
1 stop40h 45m
Deal found 8/30![Cathay Pacific logo]()
$1,161
This Cathay Pacific deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:40 am -
2 stops31h 10m
Wed 9/168:20 am -
1 stop40h 45m
Deal found 8/30![Multiple Airlines logo]()
$1,258
This Justfly.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:25 pm -
1 stop27h 25m
Fri 10/212:10 am -
1 stop24h 55m
Deal found 9/2![Cathay Pacific logo]()
$1,281
This FlightHub deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm -
1 stop43h 15m
Mon 9/2812:10 am -
1 stop24h 55m
Deal found 9/1![Cathay Pacific logo]()
$1,231
This Cathay Pacific deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm -
1 stop43h 15m
Tue 9/298:20 am -
2 stops29h 39m
Deal found 9/1![Multiple Airlines logo]()
$1,264
This SmartFares deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:45 am -
1 stop28h 05m
Sun 10/2512:25 am -
1 stop24h 20m
Deal found 9/3![Cathay Pacific logo]()
$1,249
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:40 pm -
2 stops36h 15m
Thu 10/295:50 pm -
1 stop29h 15m
Deal found 9/3![Multiple Airlines logo]()
$1,276
This Bravofly deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:50 am -
1 stop28h 05m
Fri 10/3012:25 am -
1 stop24h 20m
Deal found 8/31![Cathay Pacific logo]()
$1,241
One-way flights from Seattle to PerthSearch for one-way flight options from Seattle to Perth. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Seattle to Perth. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:40 pm -
2 stops56h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:09 pm -
3 stops55h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$630
This Expedia deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:50 am -
1 stop28h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Cathay Pacific logo]()
$634
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:39 pm -
3 stops48h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$648
This FlightHub deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:25 pm -
1 stop27h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Cathay Pacific logo]()
$658
This Cathay Pacific deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:35 pm -
2 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$718
Find flight deals from Seattle to Perth
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Perth (PER). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,228 (Kiwi.com) |
One-way from | $572 (Kiwi.com) |
Popular in | November |
Cheapest in | June |
Average price | $1,821 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Perth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 4, 2026.
Use the filters below to find and compare flights from Seattle to Perth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sat 11/14
8:09 pm-7:55 pm
3 stops55h 46m
Perth
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$630
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Mon 11/16
3:40 pm-9:45 pm
3 stops38h 05m
Perth
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$642
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sun 11/15
9:39 pm-1:55 pm
3 stops48h 16m
Perth
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$648
Quickest round-trip
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sat 9/12
12:25 pm-6:50 am
1 stop27h 25m
Perth
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$658
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sat 9/12
8:35 pm-10:40 pm
2 stops35h 05m
Perth
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$718
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Mon 10/5
11:45 am-6:50 am
1 stop28h 05m
Perth
Mon 10/12
8:20 am-10:05 am
1 stop40h 45m
$1,324
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sun 10/18
8:09 pm-10:40 pm
2 stops35h 31m
Perth
Sat 10/31
8:30 am-9:22 am
2 stops39h 52m
$1,352
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Mon 10/19
6:39 am-6:50 am
2 stops33h 11m
Perth
Sun 10/25
12:25 am-4:04 pm
2 stops30h 39m
$1,355
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Sun 10/11
6:10 am-6:50 am
2 stops33h 40m
Perth
Sun 10/25
8:30 am-9:45 am
1 stop40h 15m
$1,359
SeattlePerth
SEA Seattle/Tacoma Intl - PER Perth
SEAPER
Seattle/Tacoma Intl
Fri 11/20
12:20 pm-2:45 pm
2 stops34h 25m
Perth
Mon 1/4
7:20 am-6:29 pm
2 stops27h 09m
$1,538
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from Seattle to Perth
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Perth in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Perth flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Perth flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Perth flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Perth flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Perth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Perth
Have a flexible travel schedule? Discover the best time to fly to Perth from Seattle with our price prediction graph.
SEA-PER
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Perth
Get insights into the airlines that provide service to Perth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Perth. Reviews last updated September 4, 2026.
See what other customers who have flown with Singapore Airlines and Qatar Airways from Seattle to Perth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.3
Overall
8.2
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Boarding
8.3
Overall
8.2
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Boarding
8.3
Overall
8.2
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Perth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Perth flight routes
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Alternative routes for Seattle to Perth
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Complete your trip
Complete your trip to Perth by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Perth by cabin class
Find flights from Seattle to Perth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Perth flights
Browse other Seattle and Perth flight options. Last updated on September 4, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
Other flights to Perth
Explore flights to Perth departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Perth
Discover the top 2 airlines that operate flights from Seattle to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,232 | Average$1,401 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,240 | Average$1,821 | FlexibilityNo cancel fee | On-time68% |