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 24 days ago
486,190 searches this week
171 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from Seattle to Sydney
Explore current cheapest deals departing from Seattle to Sydney
Round trip
Sort by: Cheapest
September 18 - September 25
SEA - Sydney
$1,065
$914
Round trip
August 19 - August 26
SEA - Sydney
$1,122
$986
Round trip
October 20 - October 27
SEA - Sydney
$1,269
$1,010
Round trip
October 7 - October 14
SEA - Sydney
$1,268
$1,022
Round trip
November 15 - November 25
SEA - Sydney
$1,158
$1,024
Round trip
August 23 - August 30
SEA - Sydney
$1,122
$1,028
Round trip
October 2 - October 9
SEA - Sydney
$1,250
$1,029
Round trip
August 18 - August 26
SEA - Sydney
$1,105
$1,038
Round trip
August 3 - August 12
SEA - Sydney
$1,064
$1,044
Round trip
August 20 - August 24
SEA - Sydney
$1,156
$1,048
Round trip
Unlock all 500+ flight deals to Sydney and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from Seattle to Sydney
How much is a round trip from Seattle to Sydney
Regular price: $915 - $1,572
Prices are currently below the regular range for flights from Seattle to Sydney.
The regular price range for flights from Seattle to Sydney is between $915 and $1572. The current lowest deal is $914 with Frontier Airlines, for travel from Sep 18-Sep 25.
now $914
Low $915
High $1,572
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
Flights from $704
February
Flights from $1,669
Direct flights from Seattle to Sydney
Air Canada
Alaska Airlines, Inc.
Frontier Airlines
United Airlines
Last-minute flights going from Seattle to Sydney
Wed, Jun 17
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Alaska Airlines, Inc.
$1,461
$1,202
One-way
Wed, Jun 17
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Alaska Airlines, Inc.
$1,447
$1,202
One-way
Thu, Jun 18
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Alaska Airlines, Inc.
$1,271
$1,183
One-way
Sat, Jun 20
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Air Canada
$1,277
$1,171
One-way
Sun, Jun 21
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Alaska Airlines, Inc.
$1,232
$1,107
One-way
Sun, Jun 21
SEA - Sydney
Seattle (SEA) - Sydney (SYD)
Alaska Airlines, Inc.
$1,219
$1,109
One-way
Biggest price drops on these dates for flights from Seattle to Sydney
Dec 1 - Dec 16
$1,421 → $1,118
21%
Dec 5 - Dec 23
$1,434 → $1,174
18%
Oct 20 - Oct 27
$1,269 → $1,010
20%
Jun 17 - Jun 19
$1,461 → $1,202
18%
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 the past 90 days.
📅 Best time to fly
Fly in November for the best prices
Historically, November offers the lowest median price at $704 for flights to Sydney.
⏱️ Flight duration
Connecting flights take 39h 20m
Flights from Seattle to Sydney typically involve 2 stopovers, with a median duration of 39h 20m.
✈️ Airlines & availability
No direct flights available
There are no direct flights available from Seattle to Sydney; all routes include at least one stop.
🏆 Airline highlight
Frontier Airlines offers a recent deal for $914
A recent deal with Frontier Airlines from Seattle to Sydney was found for $914.
🎯 Booking tip
Good prices are available 17% of the time
Historically, good prices for flights from Seattle to Sydney are available 17% of the time.
Seattle main airports to depart from
Seattle–Tacoma International (SEA)
Seattle–Tacoma International is a major airport for flights from Seattle to Sydney.
📍 ~20 km from Seattle city center (reachable by car or train).
💸 Flights from ~$914
Boeing Field (BFI)
Boeing Field is an alternative airport for flights from Seattle to Sydney.
📍 ~10 km from Seattle city center (reachable by car).
💸 Flights from ~$1728
Kenmore Air Harbor Seaplane Base (LKE)
Kenmore Air Harbor Seaplane Base is an alternative airport for flights from Seattle to Sydney.
📍 ~5 km from Seattle city center (reachable by car).
💸 Flights from ~$2472
Sydney main airports to arrive at
Sydney (SYD)
Sydney Airport is the primary international gateway for travelers arriving in Sydney from Seattle.
📍 ~8 km from city center (reachable by car)
💸 Flights from ~$914
Airports nearby Sydney used as alternative
Canberra (CBR)
Canberra Airport offers robust flight schedules and superior infrastructure, but requires approximately 3 hours of ground travel from Sydney CBD.
📍 ~240 km from Sydney (reachable by car)
💸 Flights from ~$955
Newcastle (NTL)
Newcastle Airport is a significant regional airport easily accessible from Northern Sydney via the M1 motorway.
📍 ~135 km from Sydney (reachable by car)
💸 Flights from ~$1080
Coffs Harbour (CFS)
Coffs Harbour Airport is a well-established regional airport, but is a significant distance from Sydney.
📍 ~400 km from Sydney (reachable by car)
💸 Flights from ~$1335
Port Macquarie (PQQ)
Port Macquarie Airport provides reliable regional connectivity, though its long travel distance makes it less practical for Sydney.
📍 ~340 km from Sydney (reachable by car)
💸 Flights from ~$1305
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
Nov 02
Sydney, Australia
94% AI deal score
$7,785
$4,780
Save $3,005
From SEA
Elite
Dec 01
Sydney, Australia
94% AI deal score
$7,852
$4,780
Save $3,072
From SEA
Elite
Jun 17
Sydney, Australia
94% AI deal score
$8,258
$4,780
Save $3,478
From SEA
Elite
Dec 01
Sydney, Australia
94% AI deal score
$7,731
$4,780
Save $2,951
From SEA
Elite
Nov 02
Sydney, Australia
94% AI deal score
$7,793
$4,781
Save $3,012
From SEA
Elite
Nov 30
Sydney, Australia
94% AI deal score
$7,482
$4,781
Save $2,701
From SEA
Elite
Dec 02
Sydney, Australia
94% AI deal score
$7,747
$4,781
Save $2,966
From SEA
Elite
Sep 15
Sydney, Australia
94% AI deal score
$7,648
$4,781
Save $2,867
From SEA
Elite
Sep 15
Sydney, Australia
94% AI deal score
$7,775
$4,781
Save $2,994
From SEA
Elite
Dec 03
Sydney, Australia
94% AI deal score
$7,873
$5,071
Save $2,802
From SEA
Elite
Oct 19
Sydney, Australia
93% AI deal score
$7,089
$4,780
Save $2,309
From SEA
Elite
Aug 31
Sydney, Australia
93% AI deal score
$6,751
$4,780
Save $1,971
From SEA
Elite
Oct 14
Sydney, Australia
93% AI deal score
$7,099
$4,780
Save $2,319
From SEA
Elite
Oct 19
Sydney, Australia
93% AI deal score
$7,109
$4,781
Save $2,328
From SEA
Elite
Oct 20
Sydney, Australia
93% AI deal score
$6,962
$4,781
Save $2,181
From SEA
Elite
Nov 21
Sydney, Australia
93% AI deal score
$7,712
$5,028
Save $2,684
From SEA
Elite
Dec 05
Sydney, Australia
93% AI deal score
$7,768
$5,319
Save $2,449
From SEA
Elite
Nov 28
Sydney, Australia
93% AI deal score
$7,571
$5,319
Save $2,252
From SEA
Elite
Nov 25
Sydney, Australia
93% AI deal score
$3,006
$2,239
Save $767
From SEA
Elite
Jul 07
Sydney, Australia
92% AI deal score
$6,329
$4,512
Save $1,817
From SEA
Elite
Jul 06
Sydney, Australia
92% AI deal score
$6,237
$4,851
Save $1,386
From SEA
Elite
Aug 18
Sydney, Australia
92% AI deal score
$6,708
$5,028
Save $1,680
From SEA
Elite
Aug 13
Sydney, Australia
92% AI deal score
$6,773
$5,029
Save $1,744
From SEA
Elite
Oct 19
Sydney, Australia
92% AI deal score
$7,139
$5,029
Save $2,110
From SEA
Elite
Nov 08
Sydney, Australia
92% AI deal score
$2,989
$2,270
Save $719
From SEA
Elite
Nov 01
Sydney, Australia
92% AI deal score
$2,979
$2,280
Save $699
From SEA
Elite
Nov 15
Sydney, Australia
92% AI deal score
$3,111
$2,428
Save $683
From SEA
Elite
Nov 02
Sydney, Australia
91% AI deal score
$2,979
$2,428
Save $551
From SEA
Elite
Nov 18
Sydney, Australia
91% AI deal score
$3,047
$2,428
Save $619
From SEA
Elite
Nov 25
Sydney, Australia
91% AI deal score
$3,017
$2,437
Save $580
From SEA
Elite
Nov 25
Sydney, Australia
91% AI deal score
$3,053
$2,437
Save $616
From SEA
Elite
Nov 20
Sydney, Australia
91% AI deal score
$2,969
$2,491
Save $478
From SEA
Elite
Nov 08
Sydney, Australia
91% AI deal score
$2,998
$2,500
Save $498
From SEA
Elite
Nov 15
Sydney, Australia
91% AI deal score
$2,978
$2,501
Save $477
From SEA
Elite
Nov 06
Sydney, Australia
91% AI deal score
$2,994
$2,501
Save $493
From SEA
Elite
Jul 31
Sydney, Australia
91% AI deal score
$3,046
$2,507
Save $539
From SEA
Elite
Jul 28
Sydney, Australia
91% AI deal score
$3,054
$2,508
Save $546
From SEA
Elite
Jun 30
Sydney, Australia
90% AI deal score
$7,460
$5,659
Save $1,801
From SEA
Elite
Dec 02
Sydney, Australia
90% AI deal score
$7,792
$6,202
Save $1,590
From SEA
Elite
Nov 30
Sydney, Australia
90% AI deal score
$22,294
$17,770
Save $4,524
From SEA
Elite
Oct 09
Sydney, Australia
90% AI deal score
$26,342
$21,735
Save $4,607
From SEA
Elite
Oct 22
Sydney, Australia
90% AI deal score
$26,417
$21,759
Save $4,658
From SEA
Elite
Dec 02
Sydney, Australia
90% AI deal score
$2,848
$2,437
Save $411
From SEA
Elite
Aug 14
Sydney, Australia
88% AI deal score
$6,734
$5,595
Save $1,139
From SEA
Elite
Aug 14
Sydney, Australia
88% AI deal score
$6,774
$5,614
Save $1,160
From SEA
Elite
Aug 14
Sydney, Australia
88% AI deal score
$6,774
$5,614
Save $1,160
From SEA
Elite
Aug 29
Sydney, Australia
88% AI deal score
$6,821
$5,617
Save $1,204
From SEA
Elite
Aug 06
Sydney, Australia
88% AI deal score
$6,912
$5,746
Save $1,166
From SEA
Elite
Aug 14
Sydney, Australia
84% AI deal score
$6,685
$5,592
Save $1,093
From SEA
Elite
Dec 03
Sydney, Australia
84% AI deal score
$25,933
$21,735
Save $4,198
From SEA
Elite
Aug 14
Sydney, Australia
83% AI deal score
$6,583
$5,617
Save $966
From SEA
Elite
Aug 29
Sydney, Australia
83% AI deal score
$6,719
$5,662
Save $1,057
From SEA
Elite
Aug 06
Sydney, Australia
83% AI deal score
$6,701
$5,746
Save $955
From SEA
Elite
Jul 18
Sydney, Australia
83% AI deal score
$26,493
$23,960
Save $2,533
From SEA
Elite
Sep 28
Sydney, Australia
83% AI deal score
$27,573
$24,032
Save $3,541
From SEA
Elite
Sep 20
Sydney, Australia
83% AI deal score
$2,751
$2,508
Save $243
From SEA
Elite
Jul 31
Sydney, Australia
83% AI deal score
$3,011
$2,770
Save $241
From SEA
Elite
Jul 03
Sydney, Australia
82% AI deal score
$6,328
$5,652
Save $676
From SEA
Elite
Jul 04
Sydney, Australia
82% AI deal score
$6,325
$5,659
Save $666
From SEA
Elite
Aug 06
Sydney, Australia
82% AI deal score
$6,536
$5,785
Save $751
From SEA
Elite
Oct 21
Sydney, Australia
82% AI deal score
$23,932
$21,677
Save $2,255
From SEA
Elite
Oct 20
Sydney, Australia
82% AI deal score
$24,021
$21,718
Save $2,303
From SEA
Elite
Oct 22
Sydney, Australia
82% AI deal score
$23,932
$21,718
Save $2,214
From SEA
Elite
Oct 29
Sydney, Australia
82% AI deal score
$24,186
$21,731
Save $2,455
From SEA
Elite
Oct 09
Sydney, Australia
82% AI deal score
$24,135
$21,735
Save $2,400
From SEA
Elite
Oct 08
Sydney, Australia
82% AI deal score
$24,133
$21,735
Save $2,398
From SEA
Elite
Oct 08
Sydney, Australia
82% AI deal score
$24,148
$21,735
Save $2,413
From SEA
Elite
Oct 09
Sydney, Australia
82% AI deal score
$24,150
$21,735
Save $2,415
From SEA
Elite
Oct 21
Sydney, Australia
82% AI deal score
$24,219
$21,735
Save $2,484
From SEA
Elite
Oct 20
Sydney, Australia
82% AI deal score
$24,184
$21,735
Save $2,449
From SEA
Elite
Oct 30
Sydney, Australia
82% AI deal score
$24,182
$21,759
Save $2,423
From SEA
Elite
Oct 22
Sydney, Australia
82% AI deal score
$24,204
$21,759
Save $2,445
From SEA
Elite
Sep 17
Sydney, Australia
82% AI deal score
$25,253
$21,774
Save $3,479
From SEA
Elite
Dec 08
Sydney, Australia
81% AI deal score
$23,712
$21,680
Save $2,032
From SEA
Elite
Oct 21
Sydney, Australia
81% AI deal score
$23,629
$21,680
Save $1,949
From SEA
Elite
Oct 20
Sydney, Australia
81% AI deal score
$23,796
$21,718
Save $2,078
From SEA
Elite
Oct 21
Sydney, Australia
81% AI deal score
$23,816
$21,718
Save $2,098
From SEA
Elite
Oct 08
Sydney, Australia
81% AI deal score
$23,559
$21,735
Save $1,824
From SEA
Elite
Dec 03
Sydney, Australia
81% AI deal score
$23,712
$21,735
Save $1,977
From SEA
Elite
Dec 01
Sydney, Australia
81% AI deal score
$23,712
$21,735
Save $1,977
From SEA
Elite
Dec 02
Sydney, Australia
81% AI deal score
$23,768
$21,756
Save $2,012
From SEA
Elite
Oct 22
Sydney, Australia
81% AI deal score
$23,680
$21,759
Save $1,921
From SEA
Elite
Oct 20
Sydney, Australia
81% AI deal score
$23,609
$21,759
Save $1,850
From SEA
Elite
Sep 17
Sydney, Australia
81% AI deal score
$2,787
$2,600
Save $187
From SEA
Elite
Dec 01
Sydney, Australia
80% AI deal score
$23,138
$21,735
Save $1,403
From SEA
Elite
Dec 02
Sydney, Australia
80% AI deal score
$23,138
$21,759
Save $1,379
From SEA
Elite
Jul 15
Sydney, Australia
80% AI deal score
$25,043
$23,960
Save $1,083
From SEA
Elite
Sep 14
Sydney, Australia
80% AI deal score
$25,823
$24,021
Save $1,802
From SEA
Elite
Sep 20
Sydney, Australia
80% AI deal score
$25,621
$24,113
Save $1,508
From SEA
Elite
Oct 01
Sydney, Australia
79% AI deal score
$24,050
$23,173
Save $877
From SEA
Elite
Oct 06
Sydney, Australia
79% AI deal score
$24,129
$23,189
Save $940
From SEA
Elite
Sep 04
Sydney, Australia
79% AI deal score
$25,356
$24,001
Save $1,355
From SEA
Elite
Sep 03
Sydney, Australia
79% AI deal score
$25,340
$24,001
Save $1,339
From SEA
Elite
Sep 23
Sydney, Australia
79% AI deal score
$25,206
$24,010
Save $1,196
From SEA
Elite
Sep 19
Sydney, Australia
79% AI deal score
$25,072
$24,010
Save $1,062
From SEA
Elite
Sep 24
Sydney, Australia
79% AI deal score
$24,917
$24,032
Save $885
From SEA
Elite
Sep 25
Sydney, Australia
79% AI deal score
$24,917
$24,032
Save $885
From SEA
Elite
Sep 03
Sydney, Australia
79% AI deal score
$25,319
$24,046
Save $1,273
From SEA
Elite
Sep 29
Sydney, Australia
78% AI deal score
$24,684
$24,010
Save $674
From SEA
Elite
Oct 03
Sydney, Australia
78% AI deal score
$24,264
$24,010
Save $254