| Today Only: Buy one ticket, get one free on Alaska Airlines. For Leap Day. Alaska Airlines is having a âbuy one/get oneâ promotion for round-trip flights. Flights on February 29th and March 3rd. Enter the âLEAPDAYâ discount code during booking. SALE ENDS AT MIDNIGHT 02/11/2020. We were able to pull up a couple of tickets between Seattle and Austin for about $255 for both tickets with the discount, which works out to be about $128 per person. More details are on the Alaska Airlines promotional page. Note: Carry-on bag is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. Hereâs the list of cites that we cover that are participating on this sale. Austin (AUS) to/from Portland (PDX), San Diego (SAN), San Francisco (SFO), San Jose (SJC), or Seattle (SEA) Read More Today Only: Buy one ticket, get one free on Alaska Airlines. For Leap Day. . | 