It is unclear why the helicopter carrying Lionel Zinsou crash-landed in a stadium.
"My father is fine. There were no victims in the helicopter accident in Djougou," Marie-Cecile Zinsou tweeted.
Earlier this month, Mr Zinsou confirmed he would run as a candidate in Benin's 2016 presidential elections.
The helicopter crashed while landing at a stadium in the city of Djougou, a spokesman for Benin's interior ministry Leonce Houngbadji told the AFP news agency.
He said no-one in the helicopter was hurt.
Mr Zinsou, a former private-equity executive, was appointed prime minister of Benin in June.
He has said he will run for president in February's election as a candidate of the ruling Cowry Forces for an Emerging Benin (FCBE) party.
Reuters reported in early December that Mr Zinsou's announcement put an end to speculation Benin's president Thomas Boni Yayi was seeking a third term.

Lakshmi Mittal, owner of ArcelorMittal, who held the top slot in 2008 with £27.7bn now has a fortune of £7.12bn and is number 11 on this year's list.
The number of London billionaires fell for the first time since the financial crash - from 80 in 2015 to 77.
There are also a record 125 women on this year's top 1,000 list.
At the top of the 2016 guide to Britain and Ireland's richest people are property tycoons the Reuben brothers, owners of London's Millbank Tower and the John Lewis headquarters, who have a fortune of £13.1bn.
Mumbai-born David and Simon Reuben, who also own London Oxford Airport and London Heliport, have increased their fortune by £3.4bn in the past year.
Others on the list include:
Making it onto the Rich List at all requires at least £103m.
Brothers Sri and Gopi Hinduja, who run the Hinduja Group, remain in second place a year on with an unchanged fortune of £13bn.
Completing the top three is Warner Music owner Len Blavatnik, who has £11.59bn. He has dropped two places after a reduction in wealth by £1.58bn.
The Mittals' previous vast wealth of £27.7bn was the biggest fortune achieved by anyone on the list before or since.
Earlier this month it was reported that ArcelorMittal board member Wilbur Ross could be among investors expected to be contacted about buying some of Tata's business interests in the UK.

Profits for the first three months of 2015 were $626m (Â£416m), and revenues were $4.45bn, a 4% increase from a year earlier.
However, eBay said that "strengthening dollar significantly impacted first quarter results".
Revenue at eBay would have been 7% higher without that currency headwind.
At payment site PayPal, currency fluctuations were less severe, hurting revenues by 3% as a result of hedging by the site.
eBay said it expected to complete its spinoff of PayPal into a separate company by the third quarter of 2015.
"I feel very good about the performance of our teams at eBay and PayPal. Each business is executing well with greater focus and operating discipline as we prepare to separate eBay and PayPal into independent publicly traded companies," said eBay chief executive John Donahoe in a statement accompanying earnings.
Shares in the site increased by over 5% in trading after markets had closed.

The 21-year-old had already been absent earlier this season with a knee problem that had limited him to just one first-grade appearance.
The Warriors have also lost prop Tony Clubb for an indeterminate spell while he undergoes an routine operation.
Clubb, 29, has a medical condition but is expected to make a full recovery.
He has played nine games this season, including the World Club Challenge success against NRL premiers Cronulla Sharks in February.
"Unfortunately sport can be cruel and this is definitely the case for both Tony and Jake," rugby director Kris Radlinski said.
"It's a tough pill to swallow but we will give them all of our support, as I'm sure will the Wigan fans and we look forward to seeing them back out on the field playing for Wigan."
Benin's Prime Minister walked away unscathed after the helicopter in which he was travelling crashed in the country's northwest, his daughter said.
[NEXT_CONCEPT]
The family behind Europe's biggest steelmaker has lost more than £2bn in the past year, the annual Sunday Times Rich List has revealed.
[NEXT_CONCEPT]
Online retailer eBay has reported better-than-expected results but added that a strong dollar substantially hurt the company's results.
[NEXT_CONCEPT]
Wigan Warriors half-back Jake Shorrocks is likely to miss the rest of the season with a knee injury sustained in non-contact training.