United awards to Mexico are on sale for 30K miles round-trip instead of 35K miles.
-Travel valid between Canada or the US49 and Mexico.
-Book by 2/24
-Travel between 4/29-5/26
-Travel valid only valid on United in coach.
-Round-trip or Open-Jaw travel is required, but you can get the discount on half the trip (2.5K miles) if one of the dates falls within the promo period.
Double open-jaw example for 30K miles: