I am currently looking at an amazing airfare from AMS to ANC (roundtrip for 733 euro), and it is in the K fare class. The routing would be AMS-IAH-ANC-IAH-AMS. (From IAH to ANC and back the plane will make a stop in SEA), and it s bookable on www.unitedairlines.nl

However I have to attend a wedding in Texas so I would like to add a stopover in IAH on the way back to AMS (the actually wedding is in Austin), however the K fare does not allow any stopovers. So which upper fare class would allow stopovers? L? T? S? W?

If I booked a ticket with a stopover in IAH it would cost 881 euro, whole way in K class however the ANC-IAH segments would be in L class
If I booked a ticket with a stopover in AUS it would cost 918euro, allw ay in K class however ANC-AUS is in T class

any of you guys could help me to find the cheapest possible way to fly to ANC and include a stopover in either IAH/AUS, let me know!!

thanks!!