Cheap Flights from Seattle to Adelaide
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 Adelaide
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 Adelaide
Explore current cheapest deals departing from Seattle to Adelaide
Round trip
Sort by: Cheapest
September 29 - October 10
SEA - Adelaide
$1,377
$1,003
Round trip
September 29 - October 19
SEA - Adelaide
$1,366
$1,003
Round trip
September 29 - October 26
SEA - Adelaide
$1,367
$1,003
Round trip
September 19 - October 10
SEA - Adelaide
$1,307
$1,009
Round trip
September 12 - October 10
SEA - Adelaide
$1,301
$1,009
Round trip
September 19 - October 19
SEA - Adelaide
$1,307
$1,009
Round trip
October 17 - October 26
SEA - Adelaide
$1,331
$1,020
Round trip
September 29 - October 8
SEA - Adelaide
$1,390
$1,037
Round trip
September 12 - October 8
SEA - Adelaide
$1,301
$1,042
Round trip
September 19 - October 8
SEA - Adelaide
$1,308
$1,042
Round trip
Unlock all 500+ flight deals to Adelaide and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from Seattle to Adelaide
How much is a round trip from Seattle to Adelaide
Regular price: $1,179 - $1,787
Prices for flights from Seattle to Adelaide are currently below the regular range.
The regular price range for this route is typically between $1179 and $1787. The current lowest deal is $1003 with Frontier Airlines, for travel from Sep 29-Oct 10.
now $1,003
Low $1,179
High $1,787
The cheapest time to fly from Seattle to Adelaide
The cheapest month to fly from Seattle to Adelaide is December, with a median price of $620. The most expensive month is January, with a median price of $1676. Prices are generally lower from April to December.
December
Flights from $620
January
Flights from $1,676
Direct flights from Seattle to Adelaide
Fiji Airways
Frontier Airlines
Qatar Airways
Alaska Airlines, Inc.
Last-minute flights going from Seattle to Adelaide
Tue, Jun 16
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
Alaska Airlines, Inc.
$1,481
$1,592
One-way
Wed, Jun 17
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
Alaska Airlines, Inc.
$1,563
$1,624
One-way
Thu, Jun 18
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
Alaska Airlines, Inc.
$1,654
$1,682
One-way
Fri, Jul 3
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
Alaska Airlines, Inc.
$1,375
$1,510
One-way
Mon, Jul 6
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
All Nippon Airways
$1,405
$1,720
One-way
Thu, Jul 9
SEA - Adelaide
Seattle (SEA) - Adelaide (ADL)
Alaska Airlines, Inc.
$1,392
$1,479
One-way
Biggest price drops on these dates for flights from Seattle to Adelaide
Sep 29 - Oct 10
$1,377 → $1,003
27%
Sep 29 - Oct 26
$1,367 → $1,003
27%
Sep 29 - Oct 19
$1,366 → $1,003
27%
Sep 29 - Oct 8
$1,390 → $1,037
25%
Popular Airports to fly from Seattle to Adelaide
Seattle - Adelaide route insights
💸 Price insights
Recent fares below the typical level
Recent fares from Seattle to Adelaide are below the typical level at $1003.
📅 Best time to fly
Fly in December for the best prices
Historically, December is the cheapest month to fly from Seattle to Adelaide, with a median price of $620.
⏱️ Flight duration
Long-haul flights with 2+ stopovers
Flights from Seattle to Adelaide typically take 34h 26m, with 2 or more stopovers.
✈️ Airlines & availability
Deals are available regularly
Deals from Seattle to Adelaide are available regularly, with 0.17 deals per day historically.
🏆 Airline highlight
Fiji Airways and Frontier Airlines offer deals
Fiji Airways and Frontier Airlines have historically offered deals on this route.
🎯 Booking tip
Good prices are available on 16% of recent deals
Historically, 16% of recent deals for Seattle to Adelaide flights were considered good prices.
Seattle main airports to depart from
Seattle–Tacoma International (SEA)
Seattle–Tacoma International Airport is a primary departure point for flights from Seattle to Adelaide.
📍 ~20 km from Seattle city center (reachable by car or train)
💸 Flights from ~$1003
Boeing Field (BFI)
Boeing Field is an alternative departure airport for flights from Seattle to Adelaide.
📍 ~10 km from Seattle city center (reachable by car)
💸 Flights from ~$1972
Kenmore Air Harbor Seaplane Base (LKE)
Kenmore Air Harbor Seaplane Base is an alternative departure airport for flights from Seattle to Adelaide.
📍 ~5 km from Seattle city center (reachable by car)
💸 Flights from ~$2714
Adelaide main airports to arrive at
Adelaide (ADL)
Adelaide Airport is a great arrival option for flights from Seattle to Adelaide.
📍 ~7 km from city center (reachable by car)
💸 Flights from ~$1003
Airports nearby Adelaide used as alternative
Melbourne (MEL)
Melbourne Airport is a major international hub, offering an extensive flight network when Adelaide options are limited.
📍 ~650 km from Adelaide (reachable by car or domestic flight)
💸 Flights from ~$957
Avalon (AVV)
Avalon Airport is a secondary airport for the Melbourne region, often providing lower-cost domestic fares.
📍 ~600 km from Adelaide (reachable by car)
💸 Flights from ~$1231
Mildura (MQL)
Mildura Airport is the closest significant regional airport with reliable connections to Melbourne and Sydney.
📍 ~350 km from Adelaide (reachable by car)
💸 Flights from ~$1364
Mount Gambier (MGB)
Mount Gambier Airport is the primary regional airport for the Limestone Coast, with links to Adelaide and Melbourne.
📍 ~400 km from Adelaide (reachable by car)
💸 Flights from ~$1298
Whyalla (WYA)
Whyalla Airport is geographically one of the closer mainland alternatives, useful for regional hops within South Australia.
📍 ~250 km from Adelaide (reachable by car)
💸 Flights from ~$1288
Business & First Class Flight Deals to Adelaide
Discover luxury on the budget with premium cabin class on flights from Seattle to Adelaide.
Elite
Best Elite deals to Adelaide
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From SEA
Elite
Nov 26
Adelaide, Australia
91% AI deal score
$8,734
$5,884
Save $2,850
From SEA
Elite
Dec 02
Adelaide, Australia
91% AI deal score
$9,072
$5,886
Save $3,186
From SEA
Elite
Dec 02
Adelaide, Australia
91% AI deal score
$8,974
$5,886
Save $3,088
From SEA
Elite
Dec 02
Adelaide, Australia
91% AI deal score
$9,052
$5,886
Save $3,166
From SEA
Elite
Dec 02
Adelaide, Australia
91% AI deal score
$9,000
$5,886
Save $3,114
From SEA
Elite
Nov 03
Adelaide, Australia
91% AI deal score
$8,908
$5,912
Save $2,996
From SEA
Elite
Oct 28
Adelaide, Australia
91% AI deal score
$8,828
$5,912
Save $2,916
From SEA
Elite
Nov 02
Adelaide, Australia
91% AI deal score
$8,841
$5,912
Save $2,929
From SEA
Elite
Nov 09
Adelaide, Australia
91% AI deal score
$8,778
$5,912
Save $2,866
From SEA
Elite
Nov 30
Adelaide, Australia
91% AI deal score
$8,683
$5,913
Save $2,770
From SEA
Elite
Nov 02
Adelaide, Australia
91% AI deal score
$8,911
$5,913
Save $2,998
From SEA
Elite
Nov 03
Adelaide, Australia
91% AI deal score
$8,901
$5,913
Save $2,988
From SEA
Elite
Nov 23
Adelaide, Australia
91% AI deal score
$8,752
$5,913
Save $2,839
From SEA
Elite
Dec 02
Adelaide, Australia
91% AI deal score
$9,008
$5,913
Save $3,095
From SEA
Elite
Nov 24
Adelaide, Australia
91% AI deal score
$8,783
$5,913
Save $2,870
From SEA
Elite
Dec 01
Adelaide, Australia
91% AI deal score
$9,073
$6,041
Save $3,032
From SEA
Elite
Oct 20
Adelaide, Australia
91% AI deal score
$8,864
$6,067
Save $2,797
From SEA
Elite
Oct 28
Adelaide, Australia
90% AI deal score
$8,803
$5,912
Save $2,891
From SEA
Elite
Oct 26
Adelaide, Australia
90% AI deal score
$8,827
$5,912
Save $2,915
From SEA
Elite
Oct 27
Adelaide, Australia
90% AI deal score
$8,827
$5,912
Save $2,915
From SEA
Elite
Nov 17
Adelaide, Australia
90% AI deal score
$8,768
$5,912
Save $2,856
From SEA
Elite
Nov 09
Adelaide, Australia
90% AI deal score
$8,819
$5,912
Save $2,907
From SEA
Elite
Oct 05
Adelaide, Australia
90% AI deal score
$8,774
$5,912
Save $2,862
From SEA
Elite
Nov 19
Adelaide, Australia
90% AI deal score
$8,663
$5,912
Save $2,751
From SEA
Elite
Oct 26
Adelaide, Australia
90% AI deal score
$8,844
$5,912
Save $2,932
From SEA
Elite
Nov 17
Adelaide, Australia
90% AI deal score
$8,727
$5,912
Save $2,815
From SEA
Elite
Nov 16
Adelaide, Australia
90% AI deal score
$8,777
$5,913
Save $2,864
From SEA
Elite
Nov 16
Adelaide, Australia
90% AI deal score
$8,783
$5,913
Save $2,870
From SEA
Elite
Nov 24
Adelaide, Australia
90% AI deal score
$8,721
$5,913
Save $2,808
From SEA
Elite
Oct 06
Adelaide, Australia
90% AI deal score
$8,796
$5,913
Save $2,883
From SEA
Elite
Nov 16
Adelaide, Australia
90% AI deal score
$8,727
$5,939
Save $2,788
From SEA
Elite
Nov 02
Adelaide, Australia
90% AI deal score
$8,918
$6,041
Save $2,877
From SEA
Elite
Oct 19
Adelaide, Australia
90% AI deal score
$8,661
$6,041
Save $2,620
From SEA
Elite
Oct 20
Adelaide, Australia
90% AI deal score
$8,661
$6,041
Save $2,620
From SEA
Elite
Oct 19
Adelaide, Australia
90% AI deal score
$8,871
$6,042
Save $2,829
From SEA
Elite
Oct 14
Adelaide, Australia
90% AI deal score
$8,876
$6,042
Save $2,834
From SEA
Elite
Dec 01
Adelaide, Australia
90% AI deal score
$9,000
$6,075
Save $2,925
From SEA
Elite
Dec 01
Adelaide, Australia
90% AI deal score
$9,072
$6,075
Save $2,997
From SEA
Elite
Nov 30
Adelaide, Australia
90% AI deal score
$8,718
$6,089
Save $2,629
From SEA
Elite
Dec 02
Adelaide, Australia
90% AI deal score
$9,040
$6,090
Save $2,950
From SEA
Elite
Jun 17
Adelaide, Australia
90% AI deal score
$9,885
$6,332
Save $3,553
From SEA
Elite
Aug 31
Adelaide, Australia
89% AI deal score
$8,268
$6,041
Save $2,227
From SEA
Elite
Sep 17
Adelaide, Australia
89% AI deal score
$8,924
$6,239
Save $2,685
From SEA
Elite
Jul 29
Adelaide, Australia
89% AI deal score
$9,206
$6,265
Save $2,941
From SEA
Elite
Nov 30
Adelaide, Australia
89% AI deal score
$8,691
$6,312
Save $2,379
From SEA
Elite
Nov 30
Adelaide, Australia
89% AI deal score
$8,678
$6,316
Save $2,362
From SEA
Elite
Nov 30
Adelaide, Australia
89% AI deal score
$8,675
$6,316
Save $2,359
From SEA
Elite
Oct 28
Adelaide, Australia
89% AI deal score
$8,821
$6,448
Save $2,373
From SEA
Elite
Aug 18
Adelaide, Australia
89% AI deal score
$8,294
$6,485
Save $1,809
From SEA
Elite
Dec 12
Adelaide, Australia
89% AI deal score
$8,912
$6,534
Save $2,378
From SEA
Elite
Oct 21
Adelaide, Australia
88% AI deal score
$8,846
$6,448
Save $2,398
From SEA
Elite
Nov 03
Adelaide, Australia
77% AI deal score
$8,806
$8,269
Save $537
From SEA
Elite
Jul 02
Adelaide, Australia
73% AI deal score
$4,914
From SEA
Elite
Jul 02
Adelaide, Australia
73% AI deal score
$5,095
From SEA
Elite
Jul 02
Adelaide, Australia
72% AI deal score
$4,656
From SEA
Elite
Jul 02
Adelaide, Australia
72% AI deal score
$4,745
From SEA
Elite
Jul 02
Adelaide, Australia
72% AI deal score
$4,799
From SEA
Elite
Jul 11
Adelaide, Australia
72% AI deal score
$4,990
From SEA
Elite
Jul 02
Adelaide, Australia
72% AI deal score
$5,072
From SEA
Elite
Jul 11
Adelaide, Australia
72% AI deal score
$5,079
From SEA
Elite
Jul 02
Adelaide, Australia
72% AI deal score
$5,096
From SEA
Elite
Jul 11
Adelaide, Australia
72% AI deal score
$5,133
From SEA
Elite
Jul 11
Adelaide, Australia
72% AI deal score
$5,133
From SEA
Elite
Jul 11
Adelaide, Australia
72% AI deal score
$5,248
From SEA
Elite
Jul 08
Adelaide, Australia
72% AI deal score
$5,306
From SEA
Elite
Jul 08
Adelaide, Australia
71% AI deal score
$5,048
From SEA
Elite
Jul 08
Adelaide, Australia
71% AI deal score
$5,137
From SEA
Elite
Jul 08
Adelaide, Australia
71% AI deal score
$5,191
From SEA
Elite
Jul 08
Adelaide, Australia
71% AI deal score
$5,191
From SEA
Elite
Jul 09
Adelaide, Australia
71% AI deal score
$5,321
From SEA
Elite
Jul 11
Adelaide, Australia
71% AI deal score
$5,406
From SEA
Elite
Jul 12
Adelaide, Australia
71% AI deal score
$5,410
From SEA
Elite
Jul 08
Adelaide, Australia
71% AI deal score
$5,464
From SEA
Elite
Jul 12
Adelaide, Australia
71% AI deal score
$5,499
From SEA
Elite
Sep 23
Adelaide, Australia
71% AI deal score
$6,717
From SEA
Elite
Jun 25
Adelaide, Australia
70% AI deal score
$5,670
From SEA
Elite
Jun 27
Adelaide, Australia
70% AI deal score
$5,670
From SEA
Elite
Jun 28
Adelaide, Australia
70% AI deal score
$5,710
From SEA
Elite
Aug 06
Adelaide, Australia
69% AI deal score
$9,838
From SEA
Elite
Oct 08
Adelaide, Australia
69% AI deal score
$7,063
From SEA
Elite
Nov 23
Adelaide, Australia
69% AI deal score
$7,535
From SEA
Elite
Sep 17
Adelaide, Australia
69% AI deal score
$7,552
From SEA
Elite
Dec 02
Adelaide, Australia
69% AI deal score
$8,121
From SEA
Elite
Dec 04
Adelaide, Australia
68% AI deal score
$13,560
From SEA
Elite
Aug 08
Adelaide, Australia
68% AI deal score
$16,102
From SEA
Elite
Jul 07
Adelaide, Australia
68% AI deal score
$18,540
From SEA
Elite
Jul 07
Adelaide, Australia
68% AI deal score
$18,570
From SEA
Elite
Jun 28
Adelaide, Australia
68% AI deal score
$18,882
From SEA
Elite
Jun 19
Adelaide, Australia
68% AI deal score
$18,916
From SEA
Elite
Sep 27
Adelaide, Australia
68% AI deal score
$8,255
From SEA
Elite
Nov 03
Adelaide, Australia
67% AI deal score
$16,664
From SEA
Elite
Nov 20
Adelaide, Australia
67% AI deal score
$8,996
From SEA
Elite
Dec 03
Adelaide, Australia
67% AI deal score
$10,481
From SEA
Elite
Dec 03
Adelaide, Australia
67% AI deal score
$11,775
From SEA
Elite
Aug 09
Adelaide, Australia
67% AI deal score
$15,213
From SEA
Elite
Jul 28
Adelaide, Australia
67% AI deal score
$16,337
From SEA
Elite
Jul 31
Adelaide, Australia
67% AI deal score
$17,524
From SEA
Elite
Jun 20
Adelaide, Australia
67% AI deal score
$17,978
From SEA
Elite
Jul 23
Adelaide, Australia
66% AI deal score
$11,742