£84.60 if you split at Newcastle, valid on any trains after 9:30
I'm afraid I can't find a combination of flexible Northallerton - Newcastle and Newcastle - Edinburgh tickets with a Family Railcard for 1 adult and 3 children costing a total of
£84.60.
The
Off-Peak Return Northallerton - Newcastle (with the return portion valid one month) is indeed "not valid on trains departing after 02:59 and before 09:30" (see
NOTE below) but
Diplodicus is returning the same day and the cheaper
Off-Peak Day Return Northallerton - Newcastle is "not valid on trains timed to depart the origin station shown on the ticket after 02:59 until 09:15".
This allows a total price of
£86.70 valid on the 09:29 departure or later, using:
Off-Peak Day Return Northallerton - Newcastle £23.65 for 1 adult and 3 children with a Family Railcard. (£12.70 + 3x£3.65)
Off-Peak Return Newcastle - Edinburgh £63.05 for 1 adult and 3 children with a Family Railcard. (£33.80 + 3x£9.75)
TrainSplit suggests that this can be reduced to a total of
£80.60 with a further split at Dunbar:
Off-Peak Day Return Northallerton - Newcastle £23.65 for 1 adult and 3 children with a Family Railcard. (£12.70 + 3x£3.65)
Off-Peak Return Newcastle - Dunbar route Direct £42.00 for 1 adult and 3 children with a Family Railcard. (£22.50 + 3x£6.50)
Off-Peak Day Return Dunbar - Edinburgh £14.95 for 1 adult and 3 children with a Family Railcard. (£8.05+ 3x£2.30).
But this requires using trains which call at Dunbar in both directions. The 09:29 departure from Northallerton connects into a Newcastle - Edinburgh train which calls at Dunbar, but the other four journey opportunities between 08:00 and 11:00 do not. On the return leg, five of the nine Edinburgh - Newcastle trains leaving Edinburgh between 15:00 and 19:00 call at Dunbar but there is a 2-hour gap between 15:08 and 17:08. It is for
Diplodicus to decide whether this reduced availability is worth the £6.10 saving.
NOTE The restriction applying to the
Off-Peak Return Northallerton - Newcastle, "not valid on trains departing after 02:59 and before 09:30", allows use of the 09:29 Northallerton - Newcastle train on any day that the train departs Northallerton at least one minute late. This wording of a restriction is unusual. More common is something like "not valid on trains timed to depart the origin station shown on the ticket after 02:59 until 09:15".