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SEA to YSP: distance & flight time
Seattle (Seattle Tacoma International Airport) → Marathon (Marathon Airport)
1,646 mi
2,650 km · 1,431 nm
3h 42m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→YSP fares Phone-only fares on this route — call free
Flight time details
1,646 miles nonstop takes roughly 3h 42m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- YSP — Marathon Airport · Marathon, Canada
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 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
Near YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 mi away
Frequently asked questions
How far is SEA from YSP?
The flight distance from Seattle (SEA) to Marathon (YSP) is 1,646 miles (2,650 km, 1,431 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to YSP?
A nonstop flight takes about 3h 42m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from SEA to YSP?
Nonstop service on SEA–YSP depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 3h 42m nonstop estimate.
What is the time difference between Seattle and Marathon?
Marathon is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to YSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–YSP that never appear on search engines, with no booking fees.
Why are some SEA to YSP fares phone-only?
Consolidator contracts let us sell certain SEA–YSP tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.