Travel to and from Luton Airport

That is odd. There appears to be a group save arrangement on Thameslink which isn't shown correctly on the NR website. On the national rail website, for those exact trains, I can't see those fares to Parkway, although you can get close if you use a Family Railcard for two of the adults and the three children. (It might be cheaper to use a two together card for two of the adults and a F&F card for the children and the third adult). But of course you have to pay for the railcards as well. And if you have a railcard, the inclusive fares to the airport are cheaper too

without any railcards, the fares are shown as
Adult super off peak single LTN to STP £6.60
Child super off peak single LTN to StP £2
Adult anytime single StP to LTN £9.25
Child anytime single StP to LTN £7

Multiply all those numbers by 3 and we get a total of £74.55

Thameslink shows a Groupsave return fare of £16.15 adult and £2 child


To LUA the cheapest is indeed off peak returns at £13.50 (child) and £17.80 (adult) - total £93.90