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STS to HLN: distance & flight time
Santa Rosa (Charles M. Schulz Sonoma County Airport) → Helena (Helena Regional Airport)
784 mi
1,262 km · 681 nm
2h 10m
estimated nonstop flight time
+1h
time difference · heading northeast
See live STS→HLN fares Phone-only fares on this route — call free
Flight time details
784 miles nonstop takes roughly 2h 10m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- STS — Charles M. Schulz Sonoma County Airport · Santa Rosa, United States
- HLN — Helena Regional Airport · Helena, 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 STS
- SFO · San Francisco International Airport66 mi away
- NOT · Marin County Airport - Gnoss Field29 mi away
- APC · Napa County Airport35 mi away
- UKI · Ukiah Municipal Airport47 mi away
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
Frequently asked questions
How far is STS from HLN?
The flight distance from Santa Rosa (STS) to Helena (HLN) is 784 miles (1,262 km, 681 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STS to HLN?
A nonstop flight takes about 2h 10m 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 Santa Rosa and Helena?
Helena is 1 hour ahead of Santa Rosa.
What is the cheapest way to fly from STS to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STS–HLN that never appear on search engines, with no booking fees.