Can I go two days of not pumping for 10 hours and be ok?

I am flying out of the country and it is a two day journey. My daughter didn't latch so I am just pumping. To avoid having to pump on the plane or bring the pump as a carrier on can I have two days of a long 10 hour gap of not pumping and be ok if I start back to every three hours when we arrive? My worry is losing my milk supply.