Seattle to Adelaide (SEA–ADL) — Airlines, Schedules & Connections

SEA Airport Page →
airlines 0/wk
On-time Some delays Frequent delays
Flight Schedule 0 flights
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
Seattle to Adelaide
Connecting service available through multiple hubs.
+16.5h ahead 5 1-stop hubs

While no nonstop service exists between SEA and ADL, connecting options are available through 5 hubs.

Also explore SEA Routes ADL Routes SEA Live Flights ADL Live Flights SEA Delays
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for SEA to ADL.
1-STOP
One-Stop Connections
5
Hubs
~21h
Fastest
~38h
Longest
HKG ~21h 14m SFO ~26h 3m DOH ~30h 30m DXB ~32h 50m SIN ~38h 45m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
312
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
SEA → ADL
71%
Moderate delays possible. Allow buffer time.
Departing
71%
Return
ADL → SEA
98%
Generally reliable. Most flights run on time.
Arriving
98%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. SEA delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+16.5h
Adelaide is 16.5 hours ahead of Seattle.
SEA: MDT · ADL: ACDT

When it's 6:00 PM in Seattle, it's 10.5:00 AM (next day) in Adelaide.
Visa & Entry

US passport holders must obtain an Electronic Travel Authority (ETA) before boarding. Apply through the Australian ETA app (subclass 601). The ETA costs AUD 20, is valid for 12 months with multiple entries, and allows stays of up to 90 days per visit. Processing is usually instant. Passport must be valid for at least 6 months beyond the date of entry.

Verify entry requirements with official sources before travel.
Getting to SEA

Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).

Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.

Facts

SEA–ADL Quick Facts

Key statistics for the Seattle to Adelaide route.
Route details
Time difference+16.5 hours
Airlines (nonstop)0
1-stop connections5 hubs
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Boise
Passengers/yr52.6M
Elevation433 ft / 132 m
Destination: ADL
Full nameAdelaide International Airport
IATA / ICAOADL / YPAD
TimezoneAustralia/Adelaide
Passengers/yr8.3M
Elevation20 ft / 6 m
FAQ

Frequently Asked Questions

Common questions about SEA to ADL flights.
Yes, 1-stop connections are available through HKG, SFO, DOH, DXB and SIN. These options provide additional schedule flexibility.
Adelaide is 16.5 hours ahead of Seattle.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Connecting Options and Alternatives

5 one-stop connections are available, with the fastest taking approximately 21 hours via HKG. Two-stop connections are also available via intermediate hubs.