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ISA to SEA: distance & flight time
Mount Isa (Mount Isa Airport) → Seattle (Seattle Tacoma International Airport)
7,635 mi
12,287 km · 6,635 nm
15h 26m
estimated nonstop flight time
-17h
time difference · heading northeast
See live ISA→SEA fares Phone-only fares on this route — call free
Flight time details
7,635 miles nonstop takes roughly 15h 26m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 17-hour time set-back when reading arrival times on your ticket.
The two airports
- ISA — Mount Isa Airport · Mount Isa, Australia
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ISA
- CNJ · Cloncurry Airport66 mi away
- JCK · Julia Creek Airport144 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is ISA from SEA?
The flight distance from Mount Isa (ISA) to Seattle (SEA) is 7,635 miles (12,287 km, 6,635 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISA to SEA?
A nonstop flight takes about 15h 26m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Mount Isa and Seattle?
Seattle is 17 hours behind Mount Isa.
What is the cheapest way to fly from ISA to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISA–SEA that never appear on search engines, with no booking fees.