I think the
Missed Flight Cover offered by easyJet is only available on journeys that start in the UK (i.e. single or return flights) - the
cover T&Cs also state it's only available to residents of the UK, Channel Islands and Isle of Man (p4).
The same Missed Flight Cover product is also offered by another airline,
Vueling, but in their case I
think it's offered for all journeys on Vueling regardless of where they start, and it's also available for all EU residents (see
this document, and also the
cover conditions).
If you miss your flight, easyJet also offers something called a Rescue Fee (currently €80 or £65) - this is from
easyJet's Terms & Conditions:
9.1.6 If You arrive late at the airport for Your Flight, provided You arrive within 2 hours of Your original Flight’s departure time, You should proceed to the easyJet Sales Desk or Customer Services Desk (if any) to find out if it is possible to transfer. If an easyJet Sales Desk or Customer Services Desk is open at the airport then, subject to the payment of a Rescue Fee set out in Our
Fees and Charges, we will transfer you to the next Flight that has seats available and where it would not cause a delay to the Flight’s departure.