Drive or Fly: Florissant, MO to Byrnes Mill, MO?

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 STL–STL. At 36 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

51m

Distance

36.8 mi

Total Cost

$43

CO2

15 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 49m

3m in the air

Air Distance

28 mi

Total Cost

$121

CO2

7 kg

Door-to-Door Timeline

Florissant, MO → STL 10m

Check-in & Security 90m

Flight 3m

Arrival & Baggage 30m

STL → Byrnes Mill, MO 36m

Cost Breakdown

Ticket (1 pax @ $121) $121

Airports

Florissant, MO STL — St. Louis Lambert International Airport 4 mi, ~10m drive

Byrnes Mill, MO STL — St. Louis Lambert International Airport 24 mi, ~36m drive

No scheduled flights found

No commercial flights between STL and STL. 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

3h 21m

1h 41m on rail

Total Cost

CO2

2 kg

Route

Lincoln Service Missouri River Runner

Door-to-Door Timeline

Florissant, MO → Alton Amtrak Station 30m

Boarding 30m

Train ride 101m

Arrival 10m

Kirkwood Amtrak Station → Byrnes Mill, MO 30m

Cost Breakdown

Ticket (1 pax @ $5) $5

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

Stations

From Alton Amtrak Station 0 mi, ~30m drive

To Kirkwood Amtrak Station 0 mi, ~30m drive

Service

Direct

Frequency

~1/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 1 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	51m	2h 49m	3h 21m
Total cost (1 person)	$43	$121	$5
Carbon footprint	15 kg CO₂	7 kg CO₂	2 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 12, 2026.

Decided to drive? See the full trip plan from Florissant, MO to Byrnes Mill, MO with stops, fuel costs, and turn-by-turn directions.