15% Off Base Fare of all JetBlue Cash Flights Today & Tomorrow

JetBlue is offering a 15% discount on the base fare of all JetBlue flights (save those booked with points) flown between January 10 and February 14, 2017, as well as February 26 and March 14, 2018 and booked by the end of tomorrow. Flights on Fridays and Sundays are not discounted.

Delta Flash Sale: 20k to Alaska & 35k to Hawaii Roundtrip

Through September 14, 2017 (tomorrow) at 11:59 PM ET, you can book roundtrips between the continental United States and Alaska for 20,000 Delta miles and Hawaii for 35,000 miles. The travel period for the sale is January 8 through March 23, 2018.
Sale Routes
Delta states that the sale applies to roundtrip award flights in economy from the 48 continental United States with the following destinations:

Honolulu, HI (HNL)
Kahului, HI (OGG)
Kona, HI (KOA)
Lihue, HI (LIH)
Anchorage, AK (ANC)
Fairbanks, AK (FAI)

Flights don't have to be direct to be on sale.

Delta Flash Sale: 20k Roundtrip to Florida, 25k to Caribbean

Through May 10, 2017 at 11:59 PM ET, you can book roundtrips in Delta economy...

to Florida for as little as 20k miles
to the Caribbean for as little as 25k miles

...for travel September 25 through November 14.Travel can originate in the contiguous 48 states or Alaska.

Technically the advertisement says as little as 20k miles roundtrip to Florida OR the Caribbean, but my initial scans only showed 25k roundtrips to the Caribbean.

This is a pretty good price to Florida, although the discount to the Caribbean is better. Not to mention--what would you really be saving your

Delta Flash Sale: 105k Roundtrip in Delta One to Brazil, Argentina, & Chile

Through April 19, 2017 (this Wednesday) at 11:59 PM ET, you can book roundtrips to southern South America in Delta One for travel August through November 16 for only 105,000 Delta miles. The standard price is 145,000 miles roundtrip. You can also book roundtrips in Delta economy for 50,000 miles compared to the standard roundtrip price of 60,000 miles.

This isn’t a particularly amazing award price to the bottom of the Americas in a flat bed.