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THO to SEA: distance & flight time
Thorshofn (Thorshofn Airport) → Seattle (Seattle Tacoma International Airport)
3,698 mi
5,951 km · 3,213 nm
7h 43m
estimated nonstop flight time
-7h
time difference · heading northwest
See live THO→SEA fares Phone-only fares on this route — call free
Flight time details
3,698 miles nonstop takes roughly 7h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- THO — Thorshofn Airport · Thorshofn, Iceland
- 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 THO
- VPN · Vopnafjörður Airport37 mi away
- MVA · Reykjahlíð Airport59 mi away
- HZK · Húsavík Airport61 mi away
- EGS · Egilsstaðir Airport70 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 THO from SEA?
The flight distance from Thorshofn (THO) to Seattle (SEA) is 3,698 miles (5,951 km, 3,213 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THO to SEA?
A nonstop flight takes about 7h 43m 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 Thorshofn and Seattle?
Seattle is 7 hours behind Thorshofn.
What is the cheapest way to fly from THO to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THO–SEA that never appear on search engines, with no booking fees.