Construction is clogging up the access roads to LaGuardia — and as a result, the MTA and Port Authority are offering free bus service.

The Q70 is free for the next 10 days to ease Thanksgiving travel congestion.

The bus line stops at terminals B, C, and D at La Guardia and provides connections to the 7, E, F, M, R subway trains and the Long Island Rail Road.

Nearly 368,000 passengers are expected to use LaGuardia in the next 10 days.