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ALN to PSM: distance & flight time
Alton/St Louis (St Louis Regional Airport) → Portsmouth (Portsmouth International at Pease Airport)
1,041 mi
1,675 km · 904 nm
2h 44m
estimated nonstop flight time
—
time difference · heading east
See live ALN→PSM fares Phone-only fares on this route — call free
Flight time details
1,041 miles nonstop takes roughly 2h 44m 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
- ALN — St Louis Regional Airport · Alton/St Louis, 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 ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 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 ALN from PSM?
The flight distance from Alton/St Louis (ALN) to Portsmouth (PSM) is 1,041 miles (1,675 km, 904 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALN to PSM?
A nonstop flight takes about 2h 44m 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 ALN to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALN–PSM that never appear on search engines, with no booking fees.