The home-sharing site says two rounds of fresh funding over the last six months will give it "operational flexibility." The peer-to-peer start-up is now valued at $31 billion (29 billion euros).
Airbnb Inc said it has added $447 million (421 million euros) to the $555 million it took in funding in September last year, according to a filing with the US Security and Exchange Commission.
The $1 billion in new investment helps value the online room renter at $31 billion.
Airbnb, which operates in more than 65,000 cities, has enjoyed tremendous growth as it pushes ahead with its plans of global expansion.
The home-sharing site became profitable in the second half of last year before accounting for interest, tax, depreciation and amortization, according to a company source.
The source told the Agence France-Presse news agency the new funding will give the start-up "operational flexibility."
The source added said Airbnb has no plans to launch an initial public offering (IPO) "any time soon."
One of the most prominent members of the so-called "sharing economy," Airbnb has raised more than $3 billion since being founded in 2008. But it's yet to reach even half the market value of the ridesharing giant Uber, which is estimated to be worth $68 billion.
The company is locked in a global battle with regulators who say the service takes affordable housing off the market and drives up rental prices.
Over the past year, the start-up introduced travel experiences to its range of rooms and homes to rent, and has partnered with a restaurant booking platform to allow users to book dinner from its app.
mm/uhe (AFP, Reuters)