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BWI to PSM: distance & flight time
Baltimore (Baltimore/Washington International Thurgood Marshall Airport) → Portsmouth (Portsmouth International at Pease Airport)
406 mi
654 km · 353 nm
1h 21m
estimated nonstop flight time
Same time
time difference · heading northeast
See live BWI→PSM fares Phone-only fares on this route — call free
Flight time details
406 miles nonstop takes roughly 1h 21m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, 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 BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 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 BWI from PSM?
The flight distance from Baltimore (BWI) to Portsmouth (PSM) is 406 miles (654 km, 353 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BWI to PSM?
A nonstop flight takes about 1h 21m 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 cheapest way to fly from BWI to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BWI–PSM that never appear on search engines, with no booking fees.