Same Day Round-Trip Visit Boston for the day with a same-day round-trip ticket! Check out Dartmouth Coach's special fare to Boston South Station. Some restrictions apply. See Fares for more information.   Kids Ride Free! One (1) child under the age of 14 will ride free (space permitting) per full paying adult ticket (one-way and round-trip) from all Dartmouth Coach locations (excluding New York, NY). Any additional children pay the published child's rate. This promotion is for Boston service only. Contact Dartmouth Coach for more details and eligibility.