Drive or Fly: Thornton, CO to Fort Collins, CO?

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 BJC–CYS. At 55 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

1h 4m

Distance

55.2 mi

Total Cost

$47

CO2

22 kg

Cost Breakdown

Diesel$12

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 21m

6m in the air

Air Distance

50 mi

Total Cost

$122

CO2

13 kg

Door-to-Door Timeline

Thornton, CO → BJC 12m

Check-in & Security 90m

Flight 6m

Arrival & Baggage 30m

CYS → Fort Collins, CO 63m

Cost Breakdown

Ticket (1 pax @ $122) $122

Airports

Thornton, CO BJC — Rocky Mountain Metropolitan Airport 8 mi, ~12m drive

Fort Collins, CO CYS — Cheyenne Regional Jerry Olson Field 42 mi, ~63m drive

No scheduled flights found

No commercial flights between BJC and CYS. 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

− Luggage fees and restrictions

− Less flexibility for stops along the way

Train

Amtrak

Door to Door

4h 53m

2h 36m on rail

Total Cost

$11

CO2

3 kg

Route

California Zephyr

Door-to-Door Timeline

Thornton, CO → Denver 12m

Boarding 30m

Train ride 156m

Arrival 10m

Granby Amtrak Station → Fort Collins, CO 85m

Cost Breakdown

Ticket (1 pax @ $11) $11

Estimated based on distance. Check amtrak.com for current prices.

Stations

From Denver 8 mi, ~12m drive

To Granby Amtrak Station 57 mi, ~85m drive

Service

Direct

Frequency

~1/week

+ Spacious seating with legroom and power outlets

+ Walk around freely during the trip

+ No driving fatigue — relax or work en route

+ Much lower carbon footprint than driving or flying

− Limited schedule — about 1 trips per week

− Amtrak delays can be unpredictable

− Need transportation to/from station

− Less flexibility than driving

Bus

FlixBus

Door to Door

1h 52m

1h 5m on road

Total Cost

CO2

3 kg

Route

Greyhound US0560S

Door-to-Door Timeline

Thornton, CO → Denver Union Station Bus Concourse (DEN6) 12m

Boarding 15m

Bus ride 65m

Arrival 10m

Harmony Transfer Centre (FON6) → Fort Collins, CO 10m

Cost Breakdown

Ticket (1 pax @ $6) $6

Estimated based on distance. Check flixbus.com for current prices.

Stations

From DEN6 — Denver Union Station Bus Concourse 8 mi, ~12m drive

To FON6 — Harmony Transfer Centre 6 mi, ~10m drive

Service

Direct

Frequency

~7/week

+ Usually the cheapest option

+ Wi-Fi and power outlets on board

+ No driving fatigue — relax or work en route

+ Much lower carbon footprint than driving or flying

− Limited schedule — about 7 trips per week

− Travel time longer than driving

− Need transportation to/from station

− Less flexibility than driving

At a Glance

	Drive	Fly	Train	Bus
Door-to-door time	1h 4m	3h 21m	4h 53m	1h 52m
Total cost (1 person)	$47	$122	$11	$6
Carbon footprint	22 kg CO₂	13 kg CO₂	3 kg CO₂	3 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

Transit: Amtrak GTFS, FlixBus GTFS — fares estimated

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 13, 2026.

Decided to drive? See the full trip plan from Thornton, CO to Fort Collins, CO with stops, fuel costs, and turn-by-turn directions.