Fly or drive calculator

Compare a journey two ways.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18

Distance (miles)

mpg

Fuel price

Flights (all travellers)

Car hire & transfers

Driving is cheaper

$542.5

Driving (return)

$157.5

With these inputs, driving is cheaper comes to $542.5. Driving (return) works out to $157.5.

What moves the number · Driving is cheaper

Input	−10%	Now	+10%
Distance (miles)	$558.25	$542.5	$526.75
mpg	$525	$542.5	$556.82
Fuel price	$558.25	$542.5	$526.75
Flights (all travellers)	$490.5	$542.5	$594.5
Car hire & transfers	$524.5	$542.5	$560.5

Whatmakesequal

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Compare a journey two ways.

With the defaults above, driving is cheaper works out at $542.5.