$644 Cheap Flights from Seattle (SEA) to Launceston (LST)

View $644 flight on Sat, Mar 28, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Launceston, TAS (LST)

Cheap Flights from Seattle to Launceston (SEA-LST)

Prices were available within the past 7 days and start at $644 for one-way flights and $1,214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,214 Roundtrip, found 3 days ago
$1,214
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,214 found 3 days ago
Hawaiian Airlines
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,259 Roundtrip, found 3 days ago
$1,259
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,259 found 3 days ago
Qantas Airways
Mon, Feb 2 - Thu, Feb 12
SEA
Seattle
LST
Launceston
$1,295 Roundtrip, found 5 days ago
$1,295
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Mon, Feb 2 from Seattle to Launceston, returning Thu, Feb 12, priced at $1,295 found 5 days ago
Qantas Airways
Sat, Jan 31 - Thu, Feb 12
SEA
Seattle
LST
Launceston
$1,304 Roundtrip, found 5 days ago
$1,304
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Sat, Jan 31 from Seattle to Launceston, returning Thu, Feb 12, priced at $1,304 found 5 days ago
Air Canada
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,339 Roundtrip, found 3 days ago
$1,339
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,339 found 3 days ago
Hawaiian Airlines
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,373 Roundtrip, found 3 days ago
$1,373
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,373 found 3 days ago
Qantas Airways
Tue, Jan 27 - Thu, Feb 12
SEA
Seattle
LST
Launceston
$1,379 Roundtrip, found 5 days ago
$1,379
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Tue, Jan 27 from Seattle to Launceston, returning Thu, Feb 12, priced at $1,379 found 5 days ago
Qantas Airways
Mon, Feb 2 - Sun, Feb 15
SEA
Seattle
LST
Launceston
$1,395 Roundtrip, found 5 days ago
$1,395
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Mon, Feb 2 from Seattle to Launceston, returning Sun, Feb 15, priced at $1,395 found 5 days ago
Alaska Airlines
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,441 Roundtrip, found 3 days ago
$1,441
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,441 found 3 days ago
United
Fri, Jan 30 - Sat, Feb 14
SEA
Seattle
LST
Launceston
$1,509 Roundtrip, found 3 days ago
$1,509
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 30 from Seattle to Launceston, returning Sat, Feb 14, priced at $1,509 found 3 days ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST) cost?
Secure a cheap one-way flight from $644 or cheap return flight from $1,214 from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST)?
January is the most affordable month to fly from SEA to LST. Traveling outside of peak seasons is often the key to finding a great deal.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SEA to LST flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST)?
You'll have to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SEA to LST?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST)?
Opt for a flight from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST) that takes off before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST) last-minute?
Last-minute fares from SEA to LST are typically more expensive. For the cheapest rates, start looking for flights as early as possible. That being said, if your travel plans are flexible, you may find a cheap fare right before your trip.
Is it cheaper to book a SEA to LST flight and hotel package?
You'll generally save money by securing a SEA to LST flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your ideal flights and accommodations, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Launceston Airport (LST)?
You can usually reschedule or cancel your SEA to LST flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Launceston
Airlines serving
Qantas Airways, Qatar Airways, United
Roundtrip price
$1,214
Distance
8258 mi

Book with confidence

Seattle to Launceston Flights

The cheapest times to fly from Seattle to Launceston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Launceston are during the month of January. You can find some of the cheapest flights from Seattle to Launceston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Launceston

Sunday is one of the best days to book for cheap flights from Seattle to Launceston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Launceston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Launceston in 2025. You can also book with separate airlines for your outbound and return journeys, from $644 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Launceston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Launceston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Launceston Flights

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*Available to One Key members.