Drive or Fly: Trentwood, WA to Seattle, 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 290 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

5h 23m

Distance

290.2 mi

Total Cost

$99

CO2

117 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

3h 3m

29m in the air

Air Distance

238 mi

Total Cost

$185

CO2

61 kg

Door-to-Door Timeline

Trentwood, WA → GEG 24m

Check-in & Security 90m

Flight 29m

Arrival & Baggage 30m

BFI → Seattle, WA 10m

Cost Breakdown

Ticket (1 pax @ $130) $130

Rental car (1 day)$55

Airports

Trentwood, WA GEG — Spokane International Airport 16 mi, ~24m drive

Seattle, WA BFI — King County International Airport - Boeing Field 6 mi, ~10m drive

No scheduled flights found

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

+ Saves about 2h 20m 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

Train

Amtrak

Door to Door

9h 15m

8h 10m on rail

Total Cost

$46

CO2

13 kg

Route

Empire Builder

Door-to-Door Timeline

Trentwood, WA → Spokane 15m

Boarding 30m

Train ride 490m

Arrival 10m

Seattle → Seattle, WA 10m

Cost Breakdown

Ticket (1 pax @ $46) $46

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

Stations

From Spokane 10 mi, ~15m drive

To Seattle 1 mi, ~10m drive

Service

Direct

Frequency

~2/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 2 trips per week

− Amtrak delays can be unpredictable

− Need transportation to/from station

− Less flexibility than driving

At a Glance

	Drive	Fly	Train
Door-to-door time	5h 23m	3h 3m	9h 15m
Total cost (1 person)	$99	$185	$46
Carbon footprint	117 kg CO₂	61 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: Amtrak 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 Trentwood, WA to Seattle, WA with stops, fuel costs, and turn-by-turn directions.