Drive or Fly: Roundup, MT to Helena, MT?

Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.

Driving wins

Medium

No scheduled commercial flights found for BIL–HLN. At 203 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

4h 22m

Distance

203.1 mi

Total Cost

$80

CO2

82 kg

Cost Breakdown

Diesel$45

Hotel (1 room, 0 nights) $0

Meals (1 pax, 1 day) $35

+ No luggage restrictions or TSA lines

+ Comfortable one-day drive

+ Stop anywhere along the route

+ Have your own car at the destination

+ Likely faster door-to-door than flying

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

3h 36m

20m in the air

Air Distance

166 mi

Total Cost

$182

CO2

42 kg

Door-to-Door Timeline

Roundup, MT → BIL 66m

Check-in & Security 90m

Flight 20m

Arrival & Baggage 30m

HLN → Helena, MT 10m

Cost Breakdown

Ticket (1 pax @ $127) $127

Rental car (1 day)$55

Airports

Roundup, MT BIL — Billings Logan International Airport 44 mi, ~66m drive

Helena, MT HLN — Helena Regional Airport 3 mi, ~10m drive

No scheduled flights found

No commercial flights between BIL and HLN. Flight estimates above are theoretical.

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

At a Glance

	Drive	Fly
Door-to-door time	4h 22m	3h 36m
Total cost (1 person)	$80	$182
Carbon footprint	82 kg CO₂	42 kg CO₂
Flexibility	High	Low
Luggage	Unlimited	Restricted
Reliability	Weather dependent	Data unavailable

Drive data: OSRM routing, EIA fuel prices

Flight data: Statistical estimate

Airports: OurAirports

Confidence: Medium — airports identified, fares estimated

Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 17, 2026.

Route Options

2 different routes between these cities.

Fastest

203.1 mi 4h 22m

via US 12, US 12; US 89, US 12; US 287

Alternative (+47 min)

270.4 mi 5h 9m

via I 15, US 87; MT 3; MT 200, US 87

Decided to drive? See the full trip plan from Roundup, MT to Helena, MT with stops, fuel costs, and turn-by-turn directions.