Simon Bridges' travel expenses far outstrip those of his MPs, thanks to the Opposition leader's nationwide political roadshow.

Days after a leak revealed Bridges spent more than $100,000 on travel and accommodation, between April and June - details of other MPs' expenses have been released.

The biggest National spender behind the party leader is Clutha-Southland MP Hamish Walker, whose expenses were more than$39,387.

He's closely followed by NZ First's Mark Patterson - on almost $37,778.

Other MPs with expenses over $30,000 were Labour's Kiri Allan, NZ First's Jenny Marcroft, and National's Jacqui Dean, Louise Upston, Todd McClay, Anne Tolley and Nikki Kaye.

The expenses of Government Ministers are yet to be released.