Drive or Fly: Boulder, CO to Trinidad, 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–ALS. At 225 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

4h 4m

Distance

225 mi

Total Cost

$85

CO2

91 kg

Cost Breakdown

Diesel$50

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

4h 37m

24m in the air

Air Distance

201 mi

Total Cost

$183

CO2

51 kg

Door-to-Door Timeline

Boulder, CO → BJC 17m

Check-in & Security 90m

Flight 24m

Arrival & Baggage 30m

ALS → Trinidad, CO 116m

Cost Breakdown

Ticket (1 pax @ $128) $128

Rental car (1 day)$55

Airports

Boulder, CO BJC — Rocky Mountain Metropolitan Airport 11 mi, ~17m drive

Trinidad, CO ALS — San Luis Valley Regional Airport/Bergman Field 77 mi, ~116m drive

No scheduled flights found

No commercial flights between BJC and ALS. 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

Bus

FlixBus

Door to Door

5h 25m

4h 15m on road

Total Cost

$20

CO2

11 kg

Route

Greyhound US1140

Door-to-Door Timeline

Boulder, CO → Denver Union Station Bus Concourse (DEN6) 35m

Boarding 15m

Bus ride 255m

Arrival 10m

Trinidad (Trinidad Fuel Stop) (TRN6) → Trinidad, CO 10m

Cost Breakdown

Ticket (1 pax @ $20) $20

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

Stations

From DEN6 — Denver Union Station Bus Concourse 23 mi, ~35m drive

To TRN6 — Trinidad (Trinidad Fuel Stop) 3 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	Bus
Door-to-door time	4h 4m	4h 37m	5h 25m
Total cost (1 person)	$85	$183	$20
Carbon footprint	91 kg CO₂	51 kg CO₂	11 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: 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 Boulder, CO to Trinidad, CO with stops, fuel costs, and turn-by-turn directions.