Need help booking?
Unpublished phone-only deals available
MCS to HLN: distance & flight time
Monte Caseros (Monte Caseros Airport) → Helena (Helena Regional Airport)
6,299 mi
10,138 km · 5,474 nm
12h 49m
estimated nonstop flight time
-3h
time difference · heading northwest
See live MCS→HLN fares Phone-only fares on this route — call free
Flight time details
6,299 miles nonstop takes roughly 12h 49m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- MCS — Monte Caseros Airport · Monte Caseros, Argentina
- 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 MCS
- UZU · Curuzu Cuatia Airport40 mi away
- URG · Rubem Berta Airport49 mi away
- AOL · Paso De Los Libres Airport50 mi away
- ATI · Artigas International Airport68 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 MCS from HLN?
The flight distance from Monte Caseros (MCS) to Helena (HLN) is 6,299 miles (10,138 km, 5,474 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MCS to HLN?
A nonstop flight takes about 12h 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 time difference between Monte Caseros and Helena?
Helena is 3 hours behind Monte Caseros.
What is the cheapest way to fly from MCS to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MCS–HLN that never appear on search engines, with no booking fees.