Travel Leaders Corporate said its clients paid an average of $1,073 for a domestic business trip in the third quarter, a record for Q3 and an 8% increase from a year earlier. 

And companies show no indication of cutting back, Travel Leaders said.

Hotels benefited the most. The total hotel cost for a domestic business trip increased 16% year over year and rose 12% from the second quarter.

The average daily rate was $164 in the third quarter, up from $158 a year earlier.

"There is strong demand for corporate travel in almost all sectors, but a healthy economy also means that suppliers can and are raising prices," Travel Leaders Corporate senior vice president of corporate sales Mike Boult said in a statement.

Companies spent 6% more on air travel in the third quarter. Rental car costs, however, fell to $143, a 13% drop from $165 a year earlier.

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