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DTW to PSM: distance & flight time
Detroit (Detroit Metropolitan Wayne County Airport) → Portsmouth (Portsmouth International at Pease Airport)
639 mi
1,028 km · 555 nm
1h 51m
estimated nonstop flight time
Same time
time difference · heading east
See live DTW→PSM fares Phone-only fares on this route — call free
Flight time details
639 miles nonstop takes roughly 1h 51m 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
- DTW — Detroit Metropolitan Wayne County 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 DTW
- YIP · Willow Run Airport9 mi away
- ARB · Ann Arbor Municipal Airport20 mi away
- YQG · Windsor Airport21 mi away
- DET · Coleman A. Young Municipal Airport22 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 DTW from PSM?
The flight distance from Detroit (DTW) to Portsmouth (PSM) is 639 miles (1,028 km, 555 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DTW to PSM?
A nonstop flight takes about 1h 51m 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 DTW to PSM?
Nonstop service on DTW–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 1h 51m nonstop estimate.
What is the cheapest way to fly from DTW to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DTW–PSM that never appear on search engines, with no booking fees.
Why are some DTW to PSM fares phone-only?
Consolidator contracts let us sell certain DTW–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.