The company also confirmed it had received €1.2 billion in state aid from the German government as the company tries to stay afloat.
The agreement comes as the coronavirus pandemic continues to wreak havoc on the travel industry.
The company said the extra liquidity will help it endure the coming winter season and beyond.
The pandemic halted TUI’s activities for around three months to June.
It had been hoping for a recovery from July but new restrictions brought in by Britain on travel to Spain have meant more holiday cancellations and a further dent to its finances.
The company warned in May that it needed to cut 8,000 jobs and shed 30% of its costs to prepare for a smaller tourism market.