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$192+ Cheap flights from Seattle

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — SYD
6 Nov — 13 Nov1
1 adult
1 adult, Economy

What to know about flights from Seattle

Discover essential information about flights departing from Seattle, including flight schedules, destinations, airlines operating at the Seattle airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 7 October 2025.

Cheapest airline

Air Canada

Good round-trip deal

$393 or less

Good one-way deal

$117 or less
On average, Air Canada currently has the cheapest one-way flight from Seattle/Tacoma Intl (avg. price of $1,741).
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Price to beat on a round-trip flight from Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl.
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Find flights from Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Seattle
Explore the most affordable flight options available from Seattle. Find the lowest fares based on data from user searches, with prices last updated on 7 October 2025.

Wed 5/1121:30SEA - SYD
1 stop41h 20mPhilippine Airlines
Sun 9/1111:35SYD - SEA
1 stop26h 05mPhilippine Airlines
Deal found 6/10$1,256
Wed 22/1007:44SEA - SYD
1 stop18h 01mAlaska Airlines
Thu 30/1021:40SYD - SEA
1 stop19h 52mAlaska Airlines
Deal found 6/10$1,328
Sat 31/107:00SEA - SYD
1 stop17h 45mAlaska Airlines
Fri 13/221:40SYD - SEA
1 stop20h 00mAlaska Airlines
Deal found 7/10$1,344
Tue 13/107:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Mon 19/121:40SYD - SEA
1 stop18h 11mHawaiian Airlines
Deal found 5/10$1,347
Sat 31/107:00SEA - SYD
1 stop17h 45mAlaska Airlines
Sun 15/221:40SYD - SEA
1 stop26h 35mAlaska Airlines
Deal found 6/10$1,350
Wed 12/1107:00SEA - SYD
1 stop17h 45mHawaiian Airlines
Tue 18/1121:40SYD - SEA
1 stop17h 29mHawaiian Airlines
Deal found 6/10$1,353
Tue 4/1115:55SEA - SYD
1 stop32h 50mAlaska Airlines
Fri 14/1121:40SYD - SEA
1 stop17h 29mAlaska Airlines
Deal found 4/10$1,354
Wed 4/218:59SEA - SYD
2 stops29h 46mAlaska Airlines
Sun 15/221:40SYD - SEA
1 stop26h 35mAlaska Airlines
Deal found 6/10$1,362
Sun 26/1022:30SEA - MEL
1 stop40h 05mPhilippine Airlines
Sun 9/1110:20MEL - SEA
1 stop27h 20mPhilippine Airlines
Deal found 5/10$1,365
Wed 29/1022:30SEA - MEL
1 stop35h 40mPhilippine Airlines
Sun 9/1110:20MEL - SEA
1 stop27h 20mPhilippine Airlines
Deal found 7/10$1,368
Sun 26/1013:40SEA - SYD
1 stop36h 05mAlaska Airlines
Sun 9/1121:40SYD - SEA
1 stop26h 55mAlaska Airlines
Deal found 6/10$1,368
Wed 4/321:30SEA - BNE
1 stop42h 35mPhilippine Airlines
Wed 18/311:05BNE - SEA
1 stop25h 35mPhilippine Airlines
Deal found 6/10$1,386

Find flights from Seattle within your budget

 
Find flights departing from Seattle that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 7 October 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 13/1

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Mon 19/1

21:40-20:51

1 stop18h 11m

$1,347

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 31/1

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Fri 13/2

21:40-05:15

1 stop26h 35m

$1,350

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 12/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Tue 18/11

21:40-20:09

1 stop17h 29m

$1,353

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 6/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Tue 18/11

21:40-20:09

1 stop17h 29m

$1,362

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 7/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Tue 18/11

21:40-22:52

2 stops20h 12m

$1,362

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 5/2

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Sun 15/2

21:40-20:15

1 stop17h 35m

$1,362

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/2

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Sun 15/2

21:40-20:15

1 stop17h 35m

$1,362

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 7/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Thu 13/11

21:40-23:21

1 stop20h 41m

$1,362

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 19/10

16:45-19:45

1 stop33h 00m

Sydney Kingsford Smith

Sun 26/10

21:40-06:34

1 stop26h 54m

$1,387

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/11

12:45-19:45

1 stop36h 00m

Sydney Kingsford Smith

Sun 9/11

21:40-21:57

1 stop19h 17m

$1,387

Flights are sorted by cheapest return flights first.

Deals found on 7/10

Showing 1-10 of 60 results
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Best time to book a flight from Seattle

Have a flexible travel schedule? Discover the best time to fly from Seattle with our price prediction graph.
Estimated return 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.

Travel insights for flights from Seattle

Get recent, data-driven insights about flights from Seattle including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Seattle?

Use this chart to determine the optimal time to book a return flight from Seattle to Sydney. Price data was last updated on 3 October 2025.

The best time to book flights from Seattle is 2 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle?

Currently, July is the cheapest month in which you can book a flight from Seattle (average of $878). Flying from Seattle in January will prove the most costly (average of $1,306). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Seattle?

When flying from Seattle check dates and pricing for the following: Air Canada, United Airlines. As they depart for the following popular destinations: Sydney.

United Airlines
United Airlines
From $1,209
Air Canada
Air Canada
From $1,271
Delta
Delta
From $1,180
Alaska Airlines
Alaska Airlines
From $295

What are popular destinations to fly to from Seattle?

Seattle offers frequent flights to Chicago (521 flights per day), San Francisco (475 flights per day) and Los Angeles (468 flights per day).

Los Angeles
Los Angeles
From $125
Vancouver Intl
Vancouver Intl
From $129
San Francisco
San Francisco
From $141
Honolulu
Honolulu
From $280

What is the cheapest place to fly to from Seattle?

The cheapest city to fly to from Seattle is Las Vegas Harry Reid Intl, with prices starting at $55. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $55
Bend/Redmond
Bend/Redmond
From $78
Los Angeles
Los Angeles
From $125
Vancouver Intl
Vancouver Intl
From $129

Airline reviews for flights from Seattle

Get insights into the airlines that provide service from Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Seattle. In the last 7 days, Cheapflights users made a total of 647,157 searches.
See what other customers who have flown with United Airlines and Air Canada from Seattle have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,957 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,957 reviews
United Airlines
7.4
Good
8,957 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Air Canada
7.1
Good
10,245 reviews
United Airlines
7.4
Good
8,957 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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Direct flights from Washington

Book a direct flight from one of these other cities located in Washington.
Direct flights from Spokane

Related info for your journey

Access useful and relevant information related to your journey from Seattle. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 7 October 2025.

  • What are the most popular destinations to fly to from Seattle?

    For the current month, the most popular flights from Seattle are Boston, Bangkok Suvarnabhumi Airport, Mumbai. Boston, Bangkok Suvarnabhumi Airport, Mumbai are the most popular locations from Seattle year round.

  • What is the cheapest flight from Seattle to anywhere?

    Users have flown out of Seattle for as low as $55 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,192 to fly from Seattle.

  • What are the cheapest airlines flying from Seattle to anywhere?

    According to our data, users have found Alaska Airlines, Lufthansa, and Scandinavian Airlines to have the cheapest round-trip prices from Seattle. Some of the destinations and prices are as follows: Alaska Airlines flights from Seattle to Los Angeles ($295). Lufthansa flights from Seattle to New Delhi Indira Gandhi Intl ($1,007). Scandinavian Airlines flights from Seattle to Bologna Guglielmo Marconi ($1,031).

  • What is the cheapest premium economy flight from Seattle?

    Options for some of the cheapest premium economy flights from Seattle we have found on Cheapflights are as follows:
    Fly from Seattle/Tacoma Intl to Ontario starting at $691
    Fly from Seattle/Tacoma Intl to Salt Lake City starting at $726
    Fly from Seattle/Tacoma Intl to Palm Springs starting at $828
    Fly from Seattle/Tacoma Intl to Cincinnati starting at $971

  • What is the cheapest month to fly from Seattle?

    Currently, the cheapest month for flights from Seattle is July. The most expensive month for flights is January. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Seattle?

    View the cheapest flight destinations from Seattle:
    Fly from Seattle to Sydney from $1,191 round trip
    Fly from Seattle to Melbourne from $1,365 round trip

  • How does Cheapflights help users find flights from Seattle?

    Cheapflights helps you search for flights from Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

  • Why should you use Cheapflights to find cheap flight tickets from Seattle?

    Cheapflights helps you find that perfect flight from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

  • Can Cheapflights find flights from Seattle with no change fees?

    Certainly. Search results for flights from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

  • Can Cheapflights notify me if prices for flights from Seattle become cheaper?

    Yes, Cheapflights offers price alerts on flights from Seattle so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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How does Cheapflights help users find flights from Seattle?

Cheapflights helps you search for flights from Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle?

Cheapflights helps you find that perfect flight from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Seattle with no change fees?

Certainly. Search results for flights from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle become cheaper?

Yes, Cheapflights offers price alerts on flights from Seattle so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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