The 42-year-old - who is competing on this year's 'Strictly Come Dancing' - could not stop giggling and playing with her hair as she interviewed the singer, who is 15 years her junior.
As she discussed her upcoming appearance on the BBC ballroom show, Susanna told Alex she thought he would look good on the dancefloor - a reference to the band's breakthrough hit.
"When I said I was interviewing you, people did say ‘would he do Strictly?’... because they bet that you look good on the dance floor," she said.
"Of course... I should have been the one that said you look good on the dance floor," he replied.
“Except that I’m not," Susanna then said. "I look a bit of a mess on the dance floor”, before Alex added, grinning: "I doubt that."
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Alex Turner and Susanna Reid flirt on 'BBC Breakfast'
After the interview aired, fans soon took to Twitter to discuss the pair's flirting.
"Just watched that Susanna Reid & Alex Turner interview. Jesus Christ.. The tension," one user wrote.
"Susanna Reid and Alex Turner's interview is the best thing I've seen in a while #sexualtension," another said.
One tweeter simply wrote: "Susanna Reid is absolute filth."
WATCH the interview in full by hitting play on the video above.
Susanna is sure to earn a new army of male fans when she takes to the dancefloor with partner Kevin Clifton, as 'Strictly' returns later this month.
Abbey ClancyAge: 27Best know for: Modelling and being married to England footballer Peter Crouch. She also presents fashion segments on 'This Morning'. Odds: 5/1 (credit:BBC)
Strictly Come Dancing line up 2013(02 of16)
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Rachel RileyAge: 27Best known for: Taking over from Carol Vorderman as the letters and numbers whizz on 'Countdown'. Odds: 4/1 (credit:BBC)
Strictly Come Dancing line up 2013(03 of16)
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Sophie Ellis-BextorAge: 34Best known for: Being a singer, with hits such as 'Murder On The Dance Floor' and 'If This Ain't Love'. She's also the daughter of former 'Blue Peter' presenter Janet Ellis. Odds: 6/1 (credit:BBC)
Strictly Come Dancing line up 2013(04 of16)
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Vanessa FeltzAge: 51Best known for: Her 90s chat show 'Vanessa'. She now presents her own radio show on BBC London and Radio 2, and famously had a meltdown on 'Celebrity Big Brother' in 2001. Odds: 50/1 (credit:BBC)
Strictly Come Dancing line up 2013(05 of16)
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Deborah MeadenAge: 54Best known for: Being a Dragon on BBC Two business show 'Dragons' Den'. Odds: 40/1 (credit:BBC)
Strictly Come Dancing line up 2013(06 of16)
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Susanna ReidAge: 42Best known for: Presenting 'BBC Breakfast' with Bill Turnbull. She also appeared on a 'Children In Need' special of the show with fellow newsreaders in 2012. Odds: 8/1 (credit:BBC)
Strictly Come Dancing line up 2013(07 of16)
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Natalie GumedeAge: 29Best known for: Playing husband beater Kirsty Soames on 'Coronation Street'. Odds: 6/1 (credit:BBC)
Strictly Come Dancing line up 2013(08 of16)
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Fiona FullertonAge: 56Best known for: Her roles as Bond girl Pola Ivanova in 1985's 'A View to a Kill' and as Alice in 1972 film 'Alice's Adventures in Wonderland'.Odds: 20/1 (credit:BBC)
Strictly Come Dancing line up 2013(09 of16)
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Ashley Taylor DawsonAge: 31Best known for: His role as Darren Osborne in Channel 4 soap 'Hollyoaks'. He also used to be in pop band allSTARS*.Odds: 10/1 (credit:BBC)
Strictly Come Dancing line up 2013(10 of16)
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Ben CohenAge: 34Best known for: Being a rugby union player, and being a gay icon after establishing The Ben Cohen StandUp Foundation to combat homophobia and bullying.Odds: 6/1 (credit:BBC)
Strictly Come Dancing line up 2013(11 of16)
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Patrick RobinsonAge: 49Best known for: Playing Martin "Ash" Ashford on 'Casualty'.Odds: 20/1 (credit:BBC)
Strictly Come Dancing line up 2013(12 of16)
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Julien MacdonaldAge: 42Best known for: Being a fashion designer, as well as having a famous spat with Cheryl Cole in 2011. Odds: 16/1 (credit:BBC)
Strictly Come Dancing line up 2013(13 of16)
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Mark BentonAge: 47Best known for: Starring in 'Waterloo Road' as maths teacher Daniel 'Chalky' Chalk.Odds: 40/1 (credit:BBC)
Strictly Come Dancing line up 2013(14 of16)
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Dave MyersAge: 56Best known for: Being one half of TV chef duo The Hairy Bikers. Odds: 50/1 (credit:BBC)
Strictly Come Dancing line up 2013(15 of16)
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Tony JacklinAge: 69Best known for: Being an English pro golfer.Odds: 50/1 (credit:BBC)