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

Direct flights offer convenience by minimizing travel time and avoiding layovers. However, connecting flights can sometimes be more affordable, especially for long-haul journeys. Consider your budget and how much you value a shorter travel duration when making your choice.

Can flexible travel dates help on Seattle to Sydney flights?

Being flexible with your travel dates can often lead to finding more economical flight options. Prices can vary significantly depending on the day of the week or specific time of year. Adjusting your departure or return by a few days may result in noticeable 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 meals or entertainment. Understanding these additional expenses can help you budget accurately for your trip.

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 3 days ago

476 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 12, 2026.)

Today’s best flight deals from Seattle to Sydney

Explore current cheapest deals departing from Seattle to Sydney

2027-02-01 – 2027-02-10
SEA - Sydney
78% AI deal score
$1,041
$1,002
Round trip
2026-12-01 – 2026-12-10
SEA - Sydney
83% AI deal score
$1,204
$1,018
Round trip
2027-03-05 – 2027-03-14
SEA - Sydney
78% AI deal score
$1,090
$1,033
Round trip
2027-04-08 – 2027-04-18
SEA - Sydney
88% AI deal score
$1,301
$1,036
Round trip
2027-02-07 – 2027-02-13
SEA - Sydney
76% AI deal score
$1,035
$1,040
Round trip
2027-04-01 – 2027-04-15
SEA - Sydney
80% AI deal score
$1,158
$1,053
Round trip
2026-11-02 – 2026-11-14
SEA - Sydney
76% AI deal score
$1,009
$1,062
Round trip
2026-11-07 – 2026-11-21
SEA - Sydney
76% AI deal score
$1,009
$1,077
Round trip
2026-10-25 – 2026-11-09
SEA - Sydney
77% AI deal score
$1,087
$1,080
Round trip
2026-11-18 – 2026-11-23
SEA - Sydney
76% AI deal score
$1,073
$1,081
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: $912 - $1,892

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

The regular price range for flights from Seattle to Sydney is between $912 and $1892. The current lowest deal is $997 with Alaska Airlines, Inc. for travel from Nov 7-Nov 15.

now $997

Low $912

High $1,892

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.

United Airlines

Turkish Airlines

Air Canada

Last-minute flights going from Seattle to Sydney

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,285

$1,567

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,400

$1,582

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,520

$1,589

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,526

$1,613

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,542

$1,832

One-way

Thu, Oct 15

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,285

$1,384

One-way

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

4 nights

Oct 14 - Oct 18

$1,408 → $1,162

17%

4 nights

Oct 24 - Oct 28

$1,238 → $1,080

13%

14 nights

Nov 7 - Nov 21

$1,010 → $877

13%

16 nights

Dec 7 - Dec 23

$1,218 → $1,100

10%

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

May is historically the cheapest month

Historically, May is the cheapest month to fly from Seattle to Sydney, with a median price of $1076.

⏱️ Flight duration

Connecting flights average 31h 9m

Connecting flights from Seattle to Sydney typically average 31 hours and 9 minutes.

✈️ Airlines & availability

Connecting flights are dominant on this route

Connecting flights are dominant for this long-haul route, with a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers deals on connecting flights

Alaska Airlines, Inc. has offered 37 deals on connecting flights from Seattle to Sydney.

🎯 Booking tip

Deals appear regularly on this route

Deals for flights from Seattle to Sydney appear regularly, with frequent price drops.

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

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

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Nov 07

Sydney, Australia

89% AI deal score

$6,857

$5,681

Save $1,176

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Nov 07

Sydney, Australia

89% AI deal score

$7,010

$5,904

Save $1,106

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Nov 26

Sydney, Australia

88% AI deal score

$7,117

$5,947

Save $1,170

Air Canada, +1

Business Class

From SEA

Elite

Dec 03

Sydney, Australia

88% AI deal score

$7,514

$6,058

Save $1,456

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Feb 16

Sydney, Australia

85% AI deal score

$6,741

$5,957

Save $784

All Nippon Airways

Business Class

From SEA

Elite

Jan 27

Sydney, Australia

85% AI deal score

$7,393

$6,187

Save $1,206

All Nippon Airways

Business Class

From SEA

Elite

Jan 26

Sydney, Australia

85% AI deal score

$7,434

$6,282

Save $1,152

All Nippon Airways

Business Class

From SEA

Elite

Nov 24

Sydney, Australia

84% AI deal score

$7,020

$5,947

Save $1,073

Air Canada, +1

Business Class

From SEA

Elite

Feb 24

Sydney, Australia

84% AI deal score

$6,791

$6,190

Save $601

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. Using flight comparison websites can help you see various options and identify potential deals. Looking into different airlines, including budget carriers, may also reveal lower prices.

Booking flights in advance often provides more options and potentially better prices. However, prices can fluctuate, so monitoring fares over time may help you identify a good booking window. Major holidays and peak travel seasons usually see higher prices.

Comparing nearby airports can sometimes uncover different flight options or prices. While it may add to your ground travel time, the potential savings could be worthwhile. 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

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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: $912 - $1,892

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

The regular price range for flights from Seattle to Sydney is between $912 and $1892. The current lowest deal is $997 with Alaska Airlines, Inc. for travel from Nov 7-Nov 15.

now $997

Low $912

High $1,892

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.

United Airlines

Turkish Airlines

Air Canada

Last-minute flights going from Seattle to Sydney

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,285

$1,567

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,400

$1,582

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,520

$1,589

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,526

$1,613

One-way

Wed, Oct 14

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,542

$1,832

One-way

Thu, Oct 15

⌛ Last-Minute

SEA - Sydney

Seattle (SEA) - Sydney (SYD)

Alaska Airlines, Inc.

$1,285

$1,384

One-way

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

4 nights

Oct 14 - Oct 18

$1,408 → $1,162

17%

4 nights

Oct 24 - Oct 28

$1,238 → $1,080

13%

14 nights

Nov 7 - Nov 21

$1,010 → $877

13%

16 nights

Dec 7 - Dec 23

$1,218 → $1,100

10%

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

May is historically the cheapest month

Historically, May is the cheapest month to fly from Seattle to Sydney, with a median price of $1076.

⏱️ Flight duration

Connecting flights average 31h 9m

Connecting flights from Seattle to Sydney typically average 31 hours and 9 minutes.

✈️ Airlines & availability

Connecting flights are dominant on this route

Connecting flights are dominant for this long-haul route, with a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers deals on connecting flights

Alaska Airlines, Inc. has offered 37 deals on connecting flights from Seattle to Sydney.

🎯 Booking tip

Deals appear regularly on this route

Deals for flights from Seattle to Sydney appear regularly, with frequent price drops.

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

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

84% AI deal score

$6,791

$6,190

Save $601

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

Recent fares are above the typical level

May is historically the cheapest month

Connecting flights average 31h 9m

Connecting flights are dominant on this route

Alaska Airlines, Inc. offers deals on connecting flights

Deals appear regularly on this route

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

Dec 01

Jan 26

Apr 01

Nov 07

Nov 07

Nov 26

Dec 03

Feb 16

Jan 27

Jan 26

Nov 24

Feb 24

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

May is historically the cheapest month

Connecting flights average 31h 9m

Connecting flights are dominant on this route

Alaska Airlines, Inc. offers deals on connecting flights

Deals appear regularly on this route

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

Dec 01

Jan 26

Apr 01

Nov 07

Nov 07

Nov 26

Dec 03

Feb 16

Jan 27

Jan 26

Nov 24

Feb 24

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?