Need help booking?
Unpublished phone-only deals available
PSM to SOF: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Sofia (Sofia Airport)
4,487 mi
7,221 km · 3,899 nm
9h 16m
estimated nonstop flight time
+7h
time difference · heading northeast
See live PSM→SOF fares Phone-only fares on this route — call free
Flight time details
4,487 miles nonstop takes roughly 9h 16m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, 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 PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 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 PSM from SOF?
The flight distance from Portsmouth (PSM) to Sofia (SOF) is 4,487 miles (7,221 km, 3,899 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to SOF?
A nonstop flight takes about 9h 16m 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 Portsmouth and Sofia?
Sofia is 7 hours ahead of Portsmouth.
What is the cheapest way to fly from PSM to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–SOF that never appear on search engines, with no booking fees.