Train
Dabtara (DUB)Gajraula Jn (GJL)
14007 Muzaffarpur–Old Delhi Sadbhavna Express · 3A · 109 km
₹440–₹530
2.5h
Train
Gajraula Jn (GJL)Delhi Cantt (DEC)
19270 Muzaffarpur–Porbandar Express · 3A · 138 km
₹490–₹590
2.8h
Shared jeep
Port BlairSouth Sentinel Island
Shared Sumo/Bolero · 126 km
Shared jeeps leave the stand between 05:00 and 07:00 and then stop for the day. Be early or lose a day.
₹350–₹570
5.5h
Total for 1 traveller: ₹9,600–₹14,350 one way
Does this look right?

