Unites Airlines and American Airlines are offering flights from Madrid to Honolulu for amazing 493 Euro & up. This is the cheapest fare for Hawaii flights I've seen so far.
All flights have at least 1 stopover in New York City, San Francisco, Philadelphia, Denver, Dallas or Phoenix. You can add a longer stopover in Philadelphia for free with this fares. See the pictures below for booking enquiries.
Update: You can also fly to Kahului (OGG), Kona (KOA) or Lihue (LIH). Craig wrote in the comments, that's also possible to add a free stopover in Denver. It seems like Expedia doesn't sell these fares anymore, please find other booking sites below.
Update2: The sale ends tomorrow.
The fare allows travel between 6th December - 18th December 2012, 8th January - 21st March 2013 and 8th April through 30th April 2013. The official end of sale is 18th December but I would book as soon as possible, because I think this has to be a error-fare.
- 21/1 - 9/2/2013
- 24/1 - 9/2/2013
- 9/2 - 24/2/2013
- 3/3 - 18/3/2013
- and many more
Please use HotelsCombined.com to find the cheapest hotel rate for Hawaii. Use the box in our right hand sidebar or visit HotelsCombined.com. Don’t forget to claim your personal 10% discount voucher for Expedia.
How to book a stopover in Philadelphia?
Please use the 'multi-destination' search of Expedia:
Waikiki Beach Hawaii, Honolulu: