It has been a while we posted some interesting solution from Europe to Hawaii so here is one. Based on Star Alliance carriers Lufthansa, Air Canada and United you can book round trip flights from France to main isles on Hawaii already for €472. This is for a round trip and inclusive of all taxes and checked bag. If you are flexible and can book your next flight a lot in advance look for flights departing from Paris or Lyon.
This promotion of Star Alliance airlines is valid for flights departing to Hawaii from 1st of November to 21st of December 2018 or 6th of January to 4th of April 2019. Max stay 3 months. Need an accommodation in Honolulu we recommend service of Booking.com.
Compare travel dates here (Or if you prefer direct booking with airline)
Booking sample fo cheap return flights from France to Hawaii from €472! In this case you would be leaving from Paris to Honolulu on 11th of November. You would be returning back from Hawaii to Europe on 27th of November 2018.