Drive or Fly: Boulder, CO to Alamosa, 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 260 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

4h 57m

Distance

260.7 mi

Total Cost

$93

CO2

105 kg

Cost Breakdown

Diesel$58

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

2h 48m

21m in the air

Air Distance

179 mi

Total Cost

$182

CO2

46 kg

Door-to-Door Timeline

Boulder, CO → BJC 17m

Check-in & Security 90m

Flight 21m

Arrival & Baggage 30m

ALS → Alamosa, CO 10m

Cost Breakdown

Ticket (1 pax @ $127) $127

Rental car (1 day)$55

Airports

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

Alamosa, CO ALS — San Luis Valley Regional Airport/Bergman Field 2 mi, ~10m drive

No scheduled flights found

No commercial flights between BJC and ALS. Flight estimates above are theoretical.

+ Saves about 2h 9m compared to driving

+ 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

6h 1m

3h 30m on road

Total Cost

$16

CO2

9 kg

Route

Greyhound US1140

Door-to-Door Timeline

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

Boarding 15m

Bus ride 210m

Arrival 10m

Walsenburg (Paperback Trading Post) (WSG6) → Alamosa, CO 91m

Cost Breakdown

Ticket (1 pax @ $16) $16

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

Stations

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

To WSG6 — Walsenburg (Paperback Trading Post) 61 mi, ~91m 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 57m	2h 48m	6h 1m
Total cost (1 person)	$93	$182	$16
Carbon footprint	105 kg CO₂	46 kg CO₂	9 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 15, 2026.

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