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STS to PSM: distance & flight time
Santa Rosa (Charles M. Schulz Sonoma County Airport) → Portsmouth (Portsmouth International at Pease Airport)
2,694 mi
4,336 km · 2,341 nm
5h 45m
estimated nonstop flight time
+3h
time difference · heading northeast
See live STS→PSM fares Phone-only fares on this route — call free
Flight time details
2,694 miles nonstop takes roughly 5h 45m gate to gate, flying northeast. 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
- STS — Charles M. Schulz Sonoma County Airport · Santa Rosa, United States
- PSM — Portsmouth International at Pease Airport · Portsmouth, 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 STS
- SFO · San Francisco International Airport66 mi away
- NOT · Marin County Airport - Gnoss Field29 mi away
- APC · Napa County Airport35 mi away
- UKI · Ukiah Municipal Airport47 mi away
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
Frequently asked questions
How far is STS from PSM?
The flight distance from Santa Rosa (STS) to Portsmouth (PSM) is 2,694 miles (4,336 km, 2,341 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STS to PSM?
A nonstop flight takes about 5h 45m 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 STS to PSM?
Nonstop service on STS–PSM 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 5h 45m nonstop estimate.
What is the time difference between Santa Rosa and Portsmouth?
Portsmouth is 3 hours ahead of Santa Rosa.
What is the cheapest way to fly from STS to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STS–PSM that never appear on search engines, with no booking fees.
Why are some STS to PSM fares phone-only?
Consolidator contracts let us sell certain STS–PSM 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.