Five people missing in a remote part of Western Australia survived by eating witchetty grubs and drinking water from rock pools.

The four adults and an eight-year-old boy had set off for the community of Tjuntjuntjara from Kalgoorlie on Tuesday.

Fears were held when there was no sign of them, as the area had been affected by flooding.

Paupiyala Tjarutja Aboriginal Corporation chief executive Moray Ralph said the entire community gathered at the airport to welcome them home.

"They looked very happy to be home and rescued but it's clearly been an ordeal," he said.

"There is a great deal of relief throughout the community, lots of people were clearly happy that they have come back.

"We didn't know what had happened, we were really quite worried."

The adults were Rex Mitchell, Janice Stevens and Shonna Jamieson — all in their 40s — and Bruce Stevens, aged 24.

Map Tjuntjuntjara is 660 kilometres by car from Kalgoorlie.

A search plane located the group about 143 kilometres south-west of Tjuntjuntjara, which is a 660-kilometre drive from Kalgoorlie.

They were about 10 kilometres from their Hyundai Excel sedan, which had been abandoned.

The group were rescued by helicopter soon after 3pm on Saturday, and flown to the community.

Police said they were in "relatively" good health and had since been cleared by medical staff.

They said the group said they found and ate witchetty grubs in order to survive.

Community cut off by floodwaters

Heavy rainfall in the area led to road closures and difficult driving conditions, with road access to the community cut off by floodwaters for the past fortnight.

Mr Ralph said it might not have been apparent to the group when they left Kalgoorlie that the region had received enormous rainfall.

"Kalgoorlie, the sun was shining when these people left, the road was dry for about 260 kilometres," he said.

"But we've had so much rain, we're simply isolated and we couldn't get out and cloud cover was so low they couldn't get a light plane out to search the area until this morning.

"On a 660-kilometre stretch of dirt roads that interconnect it's a bit like finding a needle in a haystack."

He said it was fortunate the group were skilled bushmen or they might not have survived.

"We can just imagine where the car would have been stranded and that would have turned into a lake by now," he said.

Mr Ralph said the group were in good spirits and were resting.

He said the community may be cut off by flood waters for at least another week.