Drive or Fly: Millwood, WA to Renton, WA?

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 GEG–BFI. At 285 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

5h 18m

Distance

285.9 mi

Total Cost

$99

CO2

116 kg

Cost Breakdown

Diesel$64

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 57m

28m in the air

Air Distance

230 mi

Total Cost

$184

CO2

59 kg

Door-to-Door Timeline

Millwood, WA → GEG 19m

Check-in & Security 90m

Flight 28m

Arrival & Baggage 30m

BFI → Renton, WA 10m

Cost Breakdown

Ticket (1 pax @ $129) $129

Rental car (1 day)$55

Airports

Millwood, WA GEG — Spokane International Airport 12 mi, ~19m drive

Renton, WA BFI — King County International Airport - Boeing Field 5 mi, ~10m drive

No scheduled flights found

No commercial flights between GEG and BFI. Flight estimates above are theoretical.

+ Saves about 2h 21m 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 30m

5h 45m on road

Total Cost

$25

CO2

13 kg

Route

FlixBus 2120

Door-to-Door Timeline

Millwood, WA → Spokane Station (SPO6) 10m

Boarding 15m

Bus ride 345m

Arrival 10m

Seattle Tacoma Intl Airport (SAP6) → Renton, WA 10m

Cost Breakdown

Ticket (1 pax @ $25) $25

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

Stations

From SPO6 — Spokane Station 6 mi, ~10m drive

To SAP6 — Seattle Tacoma Intl Airport 5 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	5h 18m	2h 57m	6h 30m
Total cost (1 person)	$99	$184	$25
Carbon footprint	116 kg CO₂	59 kg CO₂	13 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 Millwood, WA to Renton, WA with stops, fuel costs, and turn-by-turn directions.