Saver fares are not refundable. Don’t touch thrm just like you should not purchase hoteks at an advanced purchase rate thst are non refundable.

ffor direct flights between Seattle and denver you have 4 options..

Alaska— 737/A320/21 jets with different classes
United - 737 or possibly larger jets with different classes
Southwest—737 jets . Thry don’t charge for check bag fees. Don’t have special class of seats
Frontier— don’t use if life depends on.

in February ..the third Monday is a federal holiday. It’s also observed by ststes/ schools snd many school district do an extended winter break where kids might b4 off from Thursday thru Monday. The week before you have valentines day so you can see busy travel and fares could be higher. Southwest will have higher fares on holiday weekends.

look at the fares snd buy on your own. It’s about a 2 hr in the air flight + time for take off and landing. Dince it’s shorter flight first class service can be minimal.

on February 15 southwest fares are $99-$129 direct no stops depending on time of day. Different days will vary. Tue , we’d, sat they have cheaper fares.