Need help booking?
Unpublished phone-only deals available
DET to PSM: distance & flight time
Detroit (Coleman A. Young Municipal Airport) → Portsmouth (Portsmouth International at Pease Airport)
620 mi
997 km · 538 nm
1h 49m
estimated nonstop flight time
Same time
time difference · heading east
See live DET→PSM fares Phone-only fares on this route — call free
Flight time details
620 miles nonstop takes roughly 1h 49m gate to gate, flying east. 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
- DET — Coleman A. Young Municipal Airport · Detroit, 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 DET
- DTW · Detroit Metropolitan Wayne County Airport22 mi away
- YQG · Windsor Airport10 mi away
- MTC · Selfridge Air National Guard Base Airport17 mi away
- PTK · Oakland County International Airport27 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 DET from PSM?
The flight distance from Detroit (DET) to Portsmouth (PSM) is 620 miles (997 km, 538 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DET to PSM?
A nonstop flight takes about 1h 49m 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 DET to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DET–PSM that never appear on search engines, with no booking fees.