Via Julian Kheel United is running a sale from Portland and Seattle to both Honolulu and Maui from $362 roundtrip. This is available from March through end of schedule.

Availability is pretty vast — you can travel most days.

Here’s a sample Seattle – Honolulu itinerary:

Key details of this fare:

• 14 day advance purchase (which is why there’s no availability for travel this month)
  
• 60 day maximum stay
  
• Several specific dates of travel have surcharges for instance travel on Saturdays between March 4 and April 8, between June 3 and June 24, and between July 8 and August 12 costs $50 more; travel on June 30 or July 2, November 17-19, or December 14 costs $50 more; April 15 travel costs $150 more; December 15 or 17 is $200 more; December 16 is $300 more.
  
• Standard $200 change fee applies

Meanwhile via Mommy Points American Airlines is running a sale from Houston to Honolulu from $475 roundtrip.

Key details:

• This appears good through end of schedule whenever ‘O’ inventory is available on your preferred flights.
  
• Travel is permitted Monday through Thursday in each direction.
  
• There’s a standard $200 change fee and the fare is non-refundable (you may be permitted to put it on a 24 hour hold at AA.com and as long as travel is more than a week away you can cancel within 24 hours).

These fares won’t last long.