Trump's trip to the state follows criticism for his handling of Hurricane Maria, which devastated Puerto Rico last year.
Florence slowly crawled over South and North Carolina, dumping heavy rains on already flood-swollen river basins that authorities warned could bring more death and destruction.
Kerala Chief Secretary Tom Jose said there were an estimated 597,000 people in the temporary relief camps, but the number kept changing.
After two days of cleaning operations, the CIAL management held a meeting with stakeholders including airlines and ground handling agencies, to review the damage.
The cheque will be handed over to Kerala Chief Minister Pinarayi Vijayan by employee representatives of Kalyan Jewellers in Thiruvananthapuram.
The proposed loan is part of a special package that the southern state, which estimates it has suffered damage of at least 200bn rupees.
Up to five people were reported missing on Tuesday in the southern region of Calabria, a day after flash floods on a mountain trail killed 10 tourist hikers.
Dozens of people are missing and 1.2 million are sheltering in the camps, state officials said, as water receded and a huge clean-up gathered pace.