Bairstow said, 'I batted at five earlier on this summer in Tests so it's not something that would faze me too much because that's something I've done for Yorkshire since I came into the side.'
London: Jonny Bairstow said on Friday he would be happy to move up the England batting order for the upcoming Ashes series if talismanic all-rounder Ben Stokes is unavailable.
Stokes will not be on the flight to Australia on 28 October, though no final decision has been taken on his involvement in the series.
The Test vice-captain was arrested in September on suspicion of causing actual bodily harm and suspended from internationals until further notice following an apparent fight outside a nightclub.
Bairstow, who normally bats behind Stokes at number seven, told Sky Sports News: "I batted at five earlier on this summer in Tests so it's not something that would faze me too much because that's something I've done for Yorkshire since I came into the side."
"Wherever (captain) Joe (Root) and (coach) Trev (Bayliss) want me to bat, that can only be a good thing for the side. As long as I'm in the side then I'm not too fussed."
Bairstow was part of the last England side to travel Down Under four years ago, when the tourists suffered a chastening 5-0 series loss but the 28-year-old said England must remain optimistic.
"It's going to be a fantastic series," said the wicketkeeper. "It's something that if you don't look forward to it and you're not excited about it then you've already lost the battle."
"It's an exciting time. Everyone speaks about it, not just in England, not just in Australia but all around the world."
"We know that we're not just playing against 11 guys on the field, we're playing against a whole nation, but at the same time if you play well you earn the respect of that nation. We know how good a place it is to tour."
The first Test starting in Brisbane on 23 November, with four more to follow.
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India are playing a four-day practice match against English county Leicestershire.
Joe Root, who recently stepped down as England Test skipper, allowing Ben Stokes to take over the role in the process, entered the exclusive club during the first Test against New Zealand earlier this summer.
Jonny Bairstow was never afraid to take the aerial route, be it perfectly executed lofted drives down the ground or booming sixes into the leg side, and yet he never appeared to be anything other than in control, his aggression all the more devastating for its precision.