Drive or Fly: Carnation, WA to Kent, 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 BFI–SEA. At 34 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

56m

Distance

34.8 mi

Total Cost

$43

CO2

14 kg

Cost Breakdown

Diesel$8

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 43m

3m in the air

Air Distance

24 mi

Total Cost

$121

CO2

6 kg

Door-to-Door Timeline

Carnation, WA → BFI 30m

Check-in & Security 90m

Flight 3m

Arrival & Baggage 30m

SEA → Kent, WA 10m

Cost Breakdown

Ticket (1 pax @ $121) $121

Airports

Carnation, WA BFI — King County International Airport - Boeing Field 20 mi, ~30m drive

Kent, WA SEA — Seattle–Tacoma International Airport 6 mi, ~10m drive

No scheduled flights found

No commercial flights between BFI and SEA. 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

1h 33m

13m on rail

Total Cost

CO2

1 kg

Route

Amtrak Cascades

Door-to-Door Timeline

Carnation, WA → Seattle 30m

Boarding 30m

Train ride 13m

Arrival 10m

Tukwila Amtrak → Kent, WA 10m

Cost Breakdown

Ticket (1 pax @ $2) $2

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

Stations

From Seattle 20 mi, ~30m drive

To Tukwila Amtrak 6 mi, ~10m drive

Service

Direct

Frequency

~6/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 6 trips per week

− Amtrak delays can be unpredictable

− Need transportation to/from station

− Less flexibility than driving

Bus

FlixBus

Door to Door

1h 53m

50m on road

Total Cost

CO2

1 kg

Route

FlixBus 2115

Door-to-Door Timeline

Carnation, WA → Seattle (University of Washington) (1UW) 28m

Boarding 15m

Bus ride 50m

Arrival 10m

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

Cost Breakdown

Ticket (1 pax @ $2) $2

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

Stations

From 1UW — Seattle (University of Washington) 19 mi, ~28m 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	Train	Bus
Door-to-door time	56m	2h 43m	1h 33m	1h 53m
Total cost (1 person)	$43	$121	$2	$2
Carbon footprint	14 kg CO₂	6 kg CO₂	1 kg CO₂	1 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 Carnation, WA to Kent, WA with stops, fuel costs, and turn-by-turn directions.