Check dates and locations here:
https://www.norwegian.c
Might take a little work find a deal on a return flight as well as these are one way.
Terms:
Offers reflect lowest available prices and are subject to availability. Additional charges and baggage fees may apply. Program begins 00:01 March 16, 2018 and expires 23:59 EST/PST March 19, 2018. Travel period varies by route. All rights reserved; offer can be modified or expired at any time without notice.