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SEA to SOF: distance & flight time
Seattle (Seattle Tacoma International Airport) → Sofia (Sofia Airport)
5,866 mi
9,441 km · 5,098 nm
11h 58m
estimated nonstop flight time
+10h
time difference · heading northeast
See live SEA→SOF fares Phone-only fares on this route — call free
Flight time details
5,866 miles nonstop takes roughly 11h 58m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- SOF — Sofia Airport · Sofia, Bulgaria
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 SOF
- PDV · Plovdiv International Airport85 mi away
- INI · Nis Airport90 mi away
- SKP · Skopje Alexander the Great Airport105 mi away
- CRA · Craiova Airport115 mi away
Frequently asked questions
How far is SEA from SOF?
The flight distance from Seattle (SEA) to Sofia (SOF) is 5,866 miles (9,441 km, 5,098 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to SOF?
A nonstop flight takes about 11h 58m 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 Seattle and Sofia?
Sofia is 10 hours ahead of Seattle.
What is the cheapest way to fly from SEA to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–SOF that never appear on search engines, with no booking fees.