Are direct flights from Seattle to Sydney always the best option?

Direct flights offer convenience by minimizing travel time and avoiding layovers. However, they are not always the cheapest option. Flights with one or more stops can sometimes be more affordable, depending on the route and airline.

Can flexible travel dates help on Seattle to Sydney flights?

Being flexible with your travel dates can significantly impact the price of your flight. Mid-week travel or flying during off-peak seasons often results in lower fares. Even shifting your departure or return by a day or two may yield savings.

What extra costs should I check before booking Seattle to Sydney flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Being aware of these additional fees can help you budget accurately.

Flights From Seattle

To Sydney

Cheap Flights from Seattle to Sydney

Browse current best options from Seattle. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Seattle

RatePunk searches hundreds of travel sites at once for deals on flights to Sydney

Prices updated 1 day ago

462 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 15, 2026.)

Today’s best flight deals from Seattle to Sydney

Explore current cheapest deals departing from Seattle to Sydney

2027-02-13 – 2027-02-21
SEA - Sydney
89% AI deal score
$1,076
$885
Round trip
2026-11-04 – 2026-11-15
SEA - Sydney
82% AI deal score
$1,010
$892
Round trip
2026-11-03 – 2026-11-15
SEA - Sydney
82% AI deal score
$1,011
$892
Round trip
2027-02-10 – 2027-02-24
SEA - Sydney
89% AI deal score
$1,084
$893
Round trip
2026-10-20 – 2026-10-27
SEA - Sydney
90% AI deal score
$1,150
$894
Round trip
2026-11-18 – 2026-11-30
SEA - Sydney
83% AI deal score
$1,033
$894
Round trip
2027-02-03 – 2027-02-14
SEA - Sydney
89% AI deal score
$1,087
$894
Round trip
2027-02-07 – 2027-02-14
SEA - Sydney
88% AI deal score
$1,077
$894
Round trip
2027-03-07 – 2027-03-22
SEA - Sydney
90% AI deal score
$1,159
$894
Round trip
2026-11-11 – 2026-11-18
SEA - Sydney
83% AI deal score
$1,046
$895
Round trip

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

A typical journey from Seattle to Sydney takes about 39h 20m, including connections. This is a long-haul route covering a substantial distance of 12,472 kilometers. Given the significant travel time, planning for connecting itineraries is essential, as most flights on this route involve at least one stopover.

For travelers seeking cheap flights from Seattle to Sydney, prices typically range from $824–$1737, with a median fare of $1305. Right now, current fares are above the typical level. Only about 5% of recent fares were classified as a good price, indicating that finding exceptionally low fares can be challenging. New deals appear almost daily, so consistent monitoring can be beneficial.

When is the cheapest time to fly from Seattle to Sydney? The data indicates that November is the most affordable month, with a median fare of $704. Following closely are December, with a median fare of $797, and January, with a median fare of $894. These months offer significantly lower prices compared to the overall median.

Most itineraries for flights from Seattle to Sydney connect at least once. In fact, 0% of recent fares were non-stop, meaning all observed flights included connections. When connecting, the typical number of stopovers is 2, which contributes to the extended overall journey time.

How much is a round trip from Seattle to Sydney

Regular price: $956 - $1,799

Prices for flights from Seattle to Sydney are currently below the regular range.

The regular price range for flights from Seattle to Sydney is between $956 and $1799. The current lowest deal is $885 with Air Canada for travel from Feb 13-Feb 21.

now $885

Low $956

High $1,799

The cheapest time to fly from Seattle to Sydney

The cheapest month to fly from Seattle to Sydney is November, with a median price of $704. The most expensive month is February, with a median price of $1669. Prices are generally lower from January to December.

November

Cheapest

Flights from $704

February

Most Expensive

Flights from $1,669

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Sydney

Air Canada

Alaska Airlines, Inc.

QantasLink

United Airlines

Last-minute flights going from Seattle to Sydney

Tue, Sep 15

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,162

$1,190

One-way

Wed, Sep 16

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,163

$1,332

One-way

Thu, Sep 17

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,162

$1,216

One-way

Wed, Sep 23

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,086

$1,372

One-way

Fri, Sep 25

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,189

$1,257

One-way

Sun, Sep 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

2GO

$1,026

$1,107

One-way

Biggest price drops on these dates for flights from Seattle to Sydney

5 nights

Oct 21 - Oct 26

$1,183 → $901

24%

7 nights

Oct 20 - Oct 27

$1,150 → $899

22%

5 nights

Oct 26 - Oct 31

$1,179 → $935

21%

5 nights

Oct 24 - Oct 29

$1,179 → $974

17%

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Seattle to Sydney are above the typical level for this route.

📅 Best time to fly

November offers the lowest median price at $704

Historically, November has the lowest median price at $704 for flights to Sydney.

⏱️ Flight duration

Flights typically take 39h 20m

The median flight duration from Seattle to Sydney is 39h 20m, with 2 stopovers.

✈️ Airlines & availability

Connecting flights are typical for this route

This route is connecting-dominant, with a median of 2 stopovers on connecting flights.

🏆 Airline highlight

Air Canada offers deals on this route

Air Canada has offered 57 deals for flights from Seattle to Sydney recently.

🎯 Booking tip

Deals appear frequently

Deals for flights from Seattle to Sydney appear frequently, about every 30 days.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a key departure point for flights to Sydney, offering competitive pricing.

📍 ~18 km from Seattle city center (reachable by car or train).

💸 Flights from ~$888

Boeing Field (BFI)

Boeing Field offers an alternative departure option from Seattle for your journey to Sydney.

📍 ~9 km from Seattle city center (reachable by car).

💸 Flights from ~$1,670

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base provides a unique departure experience from Seattle to Sydney.

📍 ~3 km from Seattle city center (reachable by car).

💸 Flights from ~$2,483

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is a convenient arrival choice for flights from Seattle to Sydney.

📍 ~9 km from city center (reachable by car)

💸 Flights from ~$868

Airports nearby Sydney used as alternative

Canberra (CBR)

Cheapest

Canberra Airport is a major domestic and international-capable airport, offering a full range of cabin classes.

📍 ~240 km from Sydney (approximately 3 hours drive from Sydney city center)

💸 Flights from ~$944

Business & First Class Flight Deals to Sydney

Discover luxury on the budget with premium cabin class on flights from Seattle to Sydney.

Elite

Best Elite deals to Sydney

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From SEA

Elite

Jan 26

Sydney, Australia

92% AI deal score

$7,801

$5,691

Save $2,110

All Nippon Airways

Business Class

From SEA

Elite

Feb 16

Sydney, Australia

91% AI deal score

$7,116

$5,643

Save $1,473

All Nippon Airways

Business Class

From SEA

Elite

Feb 14

Sydney, Australia

91% AI deal score

$7,090

$5,691

Save $1,399

All Nippon Airways

Business Class

From SEA

Elite

Feb 16

Sydney, Australia

91% AI deal score

$7,090

$5,691

Save $1,399

All Nippon Airways

Business Class

From SEA

Elite

Feb 03

Sydney, Australia

91% AI deal score

$7,042

$5,691

Save $1,351

All Nippon Airways

Business Class

From SEA

Elite

Jan 05

Sydney, Australia

91% AI deal score

$7,481

$5,787

Save $1,694

All Nippon Airways

Business Class

From SEA

Elite

Jan 04

Sydney, Australia

91% AI deal score

$7,481

$5,787

Save $1,694

All Nippon Airways

Business Class

From SEA

Elite

Dec 03

Sydney, Australia

91% AI deal score

$7,943

$5,897

Save $2,046

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Jan 27

Sydney, Australia

91% AI deal score

$7,757

$5,931

Save $1,826

All Nippon Airways

Business Class

From SEA

Elite

Jan 30

Sydney, Australia

91% AI deal score

$7,754

$5,931

Save $1,823

All Nippon Airways

Business Class

From SEA

Elite

Jan 01

Sydney, Australia

91% AI deal score

$2,975

$2,422

Save $553

QantasLink

Business Class

From SEA

Elite

Mar 01

Sydney, Australia

90% AI deal score

$6,639

$5,688

Save $951

Qatar Airways

Business Class

Frequently Asked Questions About Flights to Sydney

Finding affordable flights often involves comparing prices from various airlines and online travel agencies. Consider being flexible with your travel dates and checking different times of the week. Setting up price alerts can also help you monitor fare changes.

Booking flights in advance can often lead to better deals, though prices can fluctuate. It's usually beneficial to start looking several months before your intended departure. Avoiding peak travel seasons may also result in lower fares.

Comparing nearby airports can sometimes uncover more economical flight options. While it may add to your ground travel time, the potential savings on airfare can be significant. Always factor in the cost and convenience of transportation to and from alternative airports.

Related routes

More routes from Seattle

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Flights to Sydney from other cities

Flights from Salt Lake City to Sydney Flights from San Francisco to Sydney Flights from Seoul to Sydney Flights from Shanghai to Sydney Flights from Singapore to Sydney Flights from St. Louis to Sydney Flights from Taipei to Sydney Flights from Tamworth to Sydney Flights from Tauranga to Sydney Flights from Tel Aviv to Sydney Flights from Toowoomba to Sydney Flights from Townsville to Sydney

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

How much is a round trip from Seattle to Sydney

Regular price: $956 - $1,799

Prices for flights from Seattle to Sydney are currently below the regular range.

The regular price range for flights from Seattle to Sydney is between $956 and $1799. The current lowest deal is $885 with Air Canada for travel from Feb 13-Feb 21.

now $885

Low $956

High $1,799

The cheapest time to fly from Seattle to Sydney

November

Cheapest

Flights from $704

February

Most Expensive

Flights from $1,669

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Sydney

Air Canada

Alaska Airlines, Inc.

QantasLink

United Airlines

Last-minute flights going from Seattle to Sydney

Tue, Sep 15

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,162

$1,190

One-way

Wed, Sep 16

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,163

$1,332

One-way

Thu, Sep 17

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Air Canada

$1,162

$1,216

One-way

Wed, Sep 23

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,086

$1,372

One-way

Fri, Sep 25

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,189

$1,257

One-way

Sun, Sep 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

2GO

$1,026

$1,107

One-way

Biggest price drops on these dates for flights from Seattle to Sydney

5 nights

Oct 21 - Oct 26

$1,183 → $901

24%

7 nights

Oct 20 - Oct 27

$1,150 → $899

22%

5 nights

Oct 26 - Oct 31

$1,179 → $935

21%

5 nights

Oct 24 - Oct 29

$1,179 → $974

17%

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Seattle to Sydney are above the typical level for this route.

📅 Best time to fly

November offers the lowest median price at $704

Historically, November has the lowest median price at $704 for flights to Sydney.

⏱️ Flight duration

Flights typically take 39h 20m

The median flight duration from Seattle to Sydney is 39h 20m, with 2 stopovers.

✈️ Airlines & availability

Connecting flights are typical for this route

This route is connecting-dominant, with a median of 2 stopovers on connecting flights.

🏆 Airline highlight

Air Canada offers deals on this route

Air Canada has offered 57 deals for flights from Seattle to Sydney recently.

🎯 Booking tip

Deals appear frequently

Deals for flights from Seattle to Sydney appear frequently, about every 30 days.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a key departure point for flights to Sydney, offering competitive pricing.

📍 ~18 km from Seattle city center (reachable by car or train).

💸 Flights from ~$888

Boeing Field (BFI)

Boeing Field offers an alternative departure option from Seattle for your journey to Sydney.

📍 ~9 km from Seattle city center (reachable by car).

💸 Flights from ~$1,670

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base provides a unique departure experience from Seattle to Sydney.

📍 ~3 km from Seattle city center (reachable by car).

💸 Flights from ~$2,483

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is a convenient arrival choice for flights from Seattle to Sydney.

📍 ~9 km from city center (reachable by car)

💸 Flights from ~$868

Airports nearby Sydney used as alternative

Canberra (CBR)

Cheapest

Canberra Airport is a major domestic and international-capable airport, offering a full range of cabin classes.

Sydney, Australia

90% AI deal score

$6,639

$5,688

Save $951

Qatar Airways

Business Class

Frequently Asked Questions About Flights to Sydney

Cheap Flights from Seattle to Sydney

Today’s best flight deals from Seattle to Sydney

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

How much is a round trip from Seattle to Sydney

The cheapest time to fly from Seattle to Sydney

Direct flights from Seattle to Sydney

Last-minute flights going from Seattle to Sydney

Biggest price drops on these dates for flights from Seattle to Sydney

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

Recent fares are above the typical level

November offers the lowest median price at $704

Flights typically take 39h 20m

Connecting flights are typical for this route

Air Canada offers deals on this route

Deals appear frequently

Seattle main airports to depart from

Sydney main airports to arrive at

Airports nearby Sydney used as alternative

Business & First Class Flight Deals to Sydney

Best Elite deals to Sydney

Jan 26

Feb 16

Feb 14

Feb 16

Feb 03

Jan 05

Jan 04

Dec 03

Jan 27

Jan 30

Jan 01

Mar 01

Frequently Asked Questions About Flights to Sydney

How can I find cheap flights from Seattle to Sydney?

When should I book flights from Seattle to Sydney?

Should I compare nearby airports for flights from Seattle to Sydney?

Are direct flights from Seattle to Sydney always the best option?

Can flexible travel dates help on Seattle to Sydney flights?

What extra costs should I check before booking Seattle to Sydney flights?

Related routes

More routes from Seattle

Flights to Sydney from other cities

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

How much is a round trip from Seattle to Sydney

The cheapest time to fly from Seattle to Sydney

Direct flights from Seattle to Sydney

Last-minute flights going from Seattle to Sydney

Biggest price drops on these dates for flights from Seattle to Sydney

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

Recent fares are above the typical level

November offers the lowest median price at $704

Flights typically take 39h 20m

Connecting flights are typical for this route

Air Canada offers deals on this route

Deals appear frequently

Seattle main airports to depart from

Sydney main airports to arrive at

Airports nearby Sydney used as alternative

Business & First Class Flight Deals to Sydney

Best Elite deals to Sydney

Jan 26

Feb 16

Feb 14

Feb 16

Feb 03

Jan 05

Jan 04

Dec 03

Jan 27

Jan 30

Jan 01

Mar 01

Frequently Asked Questions About Flights to Sydney

How can I find cheap flights from Seattle to Sydney?

When should I book flights from Seattle to Sydney?

Should I compare nearby airports for flights from Seattle to Sydney?