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HEM to SEA: distance & flight time
Helsinki (Helsinki Malmi Airport) → Seattle (Seattle Tacoma International Airport)
4,773 mi
7,681 km · 4,147 nm
9h 50m
estimated nonstop flight time
-10h
time difference · heading northwest
See live HEM→SEA fares Phone-only fares on this route — call free
Flight time details
4,773 miles nonstop takes roughly 9h 50m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- HEM — Helsinki Malmi Airport · Helsinki, Finland
- 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 HEM
- HEL · Helsinki Vantaa Airport5 mi away
- HYV · Hyvinkää Airfield28 mi away
- TLL · Lennart Meri Tallinn Airport59 mi away
- QLF · Lahti Vesivehmaa Airport65 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 HEM from SEA?
The flight distance from Helsinki (HEM) to Seattle (SEA) is 4,773 miles (7,681 km, 4,147 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HEM to SEA?
A nonstop flight takes about 9h 50m 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 Helsinki and Seattle?
Seattle is 10 hours behind Helsinki.
What is the cheapest way to fly from HEM to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HEM–SEA that never appear on search engines, with no booking fees.