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HLN to SDM: distance & flight time
Helena (Helena Regional Airport) → San Diego (Brown Field Municipal Airport)
1,005 mi
1,617 km · 873 nm
2h 39m
estimated nonstop flight time
-1h
time difference · heading south
See live HLN→SDM fares Phone-only fares on this route — call free
Flight time details
1,005 miles nonstop takes roughly 2h 39m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- SDM — Brown Field Municipal Airport · San Diego, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Near SDM
Frequently asked questions
How far is HLN from SDM?
The flight distance from Helena (HLN) to San Diego (SDM) is 1,005 miles (1,617 km, 873 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to SDM?
A nonstop flight takes about 2h 39m 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 time difference between Helena and San Diego?
San Diego is 1 hour behind Helena.
What is the cheapest way to fly from HLN to SDM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–SDM that never appear on search engines, with no booking fees.