This is the 14391st most frequent Russian word.
отправятся
"Отправятся" means "they will depart" or "they will set off."
Here, 'отправимся' conveys the act of leaving or heading towards a specific location.
После ремонта машины мы отправимся в загородный дом.
After the car is repaired, we will go to the countryside house.
In this example, 'отправится' is used in the third-person singular future tense to indicate the departure of the train.
Когда поезд отправится, мы начнем обсуждать планы.
When the train departs, we will start discussing the plans.
The word 'отправятся' is used to denote a future action of starting a journey or trip.