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

Direct flights often offer convenience and save travel time, but they are not always the most budget-friendly choice. Flights with layovers can sometimes be significantly cheaper. Weigh the cost savings against the added travel duration and potential inconvenience.

Can flexible travel dates help on Seattle to Sydney flights?

Yes, being flexible with your travel dates can significantly impact flight prices. Mid-week flights or those during off-peak seasons often have lower fares. Even shifting your departure or return by a day or two may result in 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 changes or cancellations. Factor these into your total travel budget to avoid surprises.

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 7 days ago

483 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Oct 26, 2026.)

Today’s best flight deals from Seattle to Sydney

Explore current cheapest deals departing from Seattle to Sydney

2026-10-22 – 2026-10-27
SEA - Sydney
90% AI deal score
$1,400
$1,046
Round trip
2026-10-22 – 2026-10-29
SEA - Sydney
84% AI deal score
$1,284
$1,046
Round trip
2026-10-22 – 2026-11-05
SEA - Sydney
82% AI deal score
$1,198
$1,046
Round trip
2026-11-05 – 2026-11-26
SEA - Sydney
77% AI deal score
$991
$1,047
Round trip
2026-11-05 – 2026-11-24
SEA - Sydney
77% AI deal score
$991
$1,047
Round trip
2026-11-05 – 2026-11-17
SEA - Sydney
77% AI deal score
$1,005
$1,047
Round trip
2026-10-30 – 2026-11-10
SEA - Sydney
81% AI deal score
$1,154
$1,048
Round trip
2026-10-30 – 2026-11-05
SEA - Sydney
83% AI deal score
$1,216
$1,048
Round trip
2026-10-30 – 2026-11-24
SEA - Sydney
80% AI deal score
$1,122
$1,048
Round trip
2026-10-29 – 2026-11-10
SEA - Sydney
81% AI deal score
$1,149
$1,048
Round trip

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

A typical journey from Seattle to Sydney takes about 31h 9m, including connections. Given that most itineraries for this route involve at least one stop, this duration reflects the overall travel time you can expect.

For travelers seeking cheap flights from Seattle to Sydney, prices typically range from $1239–$2062, with a median of $1631. Right now, fares are above the typical level for this route.

The cheapest time to fly from Seattle to Sydney is often in May, with a median fare of $1076. Other cost-effective months include October, where the median fare is $1217, and August, with a median of $1381.

Most itineraries for flights from Seattle to Sydney connect at least once. In fact, 0% of recent fares were non-stop. For connecting itineraries, the typical number of connections is 2.

The distance between Seattle and Sydney is approximately 12472 kilometers, classifying this as a long-haul international route.

How much is a round trip from Seattle to Sydney

Regular price: $919 - $1,787

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

The regular price range for this route is $919-$1787. The current lowest deal is $976 with Air Canada, for travel from Nov 8-Nov 17.

now $976

Low $919

High $1,787

The cheapest time to fly from Seattle to Sydney

The cheapest month to fly from Seattle to Sydney is May, with a median price of $1076. The most expensive month is December, with a median price of $2862. Prices are generally lower from March to November.

May

Cheapest

Flights from $1,076

December

Most Expensive

Flights from $2,862

Jan

Feb

Mar

May

Jun

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Sydney

Alaska Airlines, Inc.

QantasLink

2GO

Air New Zealand

Last-minute flights going from Seattle to Sydney

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,229

$1,061

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,188

$1,064

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,543

$1,130

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,550

$1,130

One-way

Wed, Oct 28

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,235

$1,061

One-way

Wed, Oct 28

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,188

$1,064

One-way

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

4 nights

Nov 2 - Nov 6

$1,373 → $1,189

13%

4 nights

Nov 8 - Nov 12

$1,253 → $1,195

3 nights

Nov 15 - Nov 18

$1,173 → $1,130

14 nights

Apr 13 - Apr 27

$1,134 → $1,092

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

💸 Price insights

Current fares are above the typical level

Recent fares for Seattle to Sydney are above the typical level at $976.

📅 Best time to fly

Fly in May for the best prices

Historically, May offers the lowest median price at $1076, followed by October at $1217.

⏱️ Flight duration

Connecting flights take 31h 9m

The median flight duration for connecting flights from Seattle to Sydney is 31h 9m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are the only option, with a median of 2 stopovers on this route.

🏆 Airline highlight

Air Canada has a deal for $976

Air Canada offers a deal for $976 from November 8-November 17 via skyscanner.

🎯 Booking tip

Deals appear regularly

Deals for flights from Seattle to Sydney appear regularly, so check often.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a key departure point for flights from Seattle to Sydney.

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

💸 Flights from ~$1,002

Boeing Field (BFI)

Boeing Field offers an alternative departure option for travelers flying from Seattle to Sydney.

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

💸 Flights from ~$1,597

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base provides another departure choice for your journey to Sydney.

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

💸 Flights from ~$1,002

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is the primary international gateway to Sydney, offering convenient access to the city.

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

💸 Flights from ~$1,002

Airports nearby Sydney used as alternative

Canberra (CBR)

Cheapest

Canberra Airport is a major domestic and international-capable airport with frequent flights to Australian hubs.

📍 ~280 km from Sydney (approximately 3 hours drive from Sydney city center)

💸 Flights from ~$1,234

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

Feb 23

Sydney, Australia

91% AI deal score

$6,541

$5,504

Save $1,037

All Nippon Airways

Business Class

From SEA

Elite

Feb 24

Sydney, Australia

91% AI deal score

$6,563

$5,527

Save $1,036

All Nippon Airways

Business Class

From SEA

Elite

Feb 24

Sydney, Australia

90% AI deal score

$6,563

$5,744

Save $819

All Nippon Airways

Business Class

From SEA

Elite

Feb 23

Sydney, Australia

90% AI deal score

$6,541

$5,751

Save $790

All Nippon Airways

Business Class

From SEA

Elite

Feb 24

Sydney, Australia

90% AI deal score

$6,563

$5,751

Save $812

All Nippon Airways

Business Class

From SEA

Elite

Feb 16

Sydney, Australia

90% AI deal score

$6,446

$5,754

Save $692

All Nippon Airways

Business Class

From SEA

Elite

Feb 14

Sydney, Australia

90% AI deal score

$26,987

$22,545

Save $4,442

QantasLink

Business Class

From SEA

Elite

Nov 17

Sydney, Australia

89% AI deal score

$7,026

$5,851

Save $1,175

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Nov 10

Sydney, Australia

89% AI deal score

$7,111

$5,951

Save $1,160

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Feb 19

Sydney, Australia

85% AI deal score

$28,634

$24,317

Save $4,317

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Feb 03

Sydney, Australia

84% AI deal score

$27,844

$24,239

Save $3,605

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Apr 08

Sydney, Australia

83% AI deal score

$6,213

$5,776

Save $437

All Nippon Airways

Business Class

Frequently Asked Questions About Flights to Sydney

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking platforms can often reveal better deals. Setting up price alerts may also help you catch drops in fares.

Booking flights in advance, often several months ahead, may help secure better prices. However, prices can fluctuate, so monitoring trends is useful. Avoiding peak travel seasons can also lead to more economical options.

Comparing nearby airports can sometimes offer alternative flight options or potentially lower fares. While not always a guarantee, it may be worth exploring if flexibility allows. Always consider the additional travel time and cost to reach a different airport.

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 Tauranga to Sydney Flights from Tel Aviv to Sydney Flights from Tokyo to Sydney Flights from Toowoomba to Sydney Flights from Townsville to Sydney

Seattle to Sydney: Overview

Insights for flights from Seattle to Sydney

For travelers seeking cheap flights from Seattle to Sydney, prices typically range from $1239–$2062, with a median of $1631. Right now, fares are above the typical level for this route.

Most itineraries for flights from Seattle to Sydney connect at least once. In fact, 0% of recent fares were non-stop. For connecting itineraries, the typical number of connections is 2.

The distance between Seattle and Sydney is approximately 12472 kilometers, classifying this as a long-haul international route.

How much is a round trip from Seattle to Sydney

Regular price: $919 - $1,787

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

The regular price range for this route is $919-$1787. The current lowest deal is $976 with Air Canada, for travel from Nov 8-Nov 17.

now $976

Low $919

High $1,787

The cheapest time to fly from Seattle to Sydney

May

Cheapest

Flights from $1,076

December

Most Expensive

Flights from $2,862

Jan

Feb

Mar

May

Jun

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Sydney

Alaska Airlines, Inc.

QantasLink

2GO

Air New Zealand

Last-minute flights going from Seattle to Sydney

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,229

$1,061

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,188

$1,064

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,543

$1,130

One-way

Tue, Oct 27

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,550

$1,130

One-way

Wed, Oct 28

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,235

$1,061

One-way

Wed, Oct 28

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,188

$1,064

One-way

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

4 nights

Nov 2 - Nov 6

$1,373 → $1,189

13%

4 nights

Nov 8 - Nov 12

$1,253 → $1,195

3 nights

Nov 15 - Nov 18

$1,173 → $1,130

14 nights

Apr 13 - Apr 27

$1,134 → $1,092

Popular Airports to fly from Seattle to Sydney

Seattle - Sydney route insights

💸 Price insights

Current fares are above the typical level

Recent fares for Seattle to Sydney are above the typical level at $976.

📅 Best time to fly

Fly in May for the best prices

Historically, May offers the lowest median price at $1076, followed by October at $1217.

⏱️ Flight duration

Connecting flights take 31h 9m

The median flight duration for connecting flights from Seattle to Sydney is 31h 9m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are the only option, with a median of 2 stopovers on this route.

🏆 Airline highlight

Air Canada has a deal for $976

Air Canada offers a deal for $976 from November 8-November 17 via skyscanner.

🎯 Booking tip

Deals appear regularly

Deals for flights from Seattle to Sydney appear regularly, so check often.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a key departure point for flights from Seattle to Sydney.

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

💸 Flights from ~$1,002

Boeing Field (BFI)

Boeing Field offers an alternative departure option for travelers flying from Seattle to Sydney.

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

💸 Flights from ~$1,597

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base provides another departure choice for your journey to Sydney.

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

💸 Flights from ~$1,002

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is the primary international gateway to Sydney, offering convenient access to the city.

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

💸 Flights from ~$1,002

Airports nearby Sydney used as alternative

Canberra (CBR)

Cheapest

Canberra Airport is a major domestic and international-capable airport with frequent flights to Australian hubs.

Sydney, Australia

83% AI deal score

$6,213

$5,776

Save $437

All Nippon 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

Current fares are above the typical level

Fly in May for the best prices

Connecting flights take 31h 9m

Connecting flights are dominant

Air Canada has a deal for $976

Deals appear regularly

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

Feb 23

Feb 24

Feb 24

Feb 23

Feb 24

Feb 16

Feb 14

Nov 17

Nov 10

Feb 19

Feb 03

Apr 08

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

Current fares are above the typical level

Fly in May for the best prices

Connecting flights take 31h 9m

Connecting flights are dominant

Air Canada has a deal for $976

Deals appear regularly

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

Feb 23

Feb 24

Feb 24

Feb 23

Feb 24

Feb 16

Feb 14

Nov 17

Nov 10

Feb 19

Feb 03

Apr 08

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?