Every October 15 to May 15, you can fly to Europe for 20,000 American Airlines miles each way in economy. This off peak pricing extends to American Airlines and its partners.

From February 1, 2016, Emirates will fly daily between Dubai and Panama City, which will be the longest scheduled commercial flight at over 8,500 miles. The flight is blocked for 17:35 heading west. Hopefully the flight will be bookable with Alaska miles, and it will definitely be bookable with Japan Airlines miles.

I have a special interest in long flights because when I am flying an ultra-luxurious First Class, I don't want the flight to end. Eight hours--a typical transatlantic flight--are not enough.

Update 8/20/15: Delta now advertises this fare sale and says the deals must be booked by tomorrow August 21, 2015.

This page also lists some of the fare sale city pairs, though definitely not all.

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Yesterday, Delta started selling awards to Europe for 21,000 miles each way in economy and 43,500 miles each way in Business Class. These are huge discounts off the "normal" price of 30,000 miles each way in economy and 62,500 miles each way in Business Class.

United is offering a 25% discount on roundtrip economy awards to Brazil and Chile this Fall (their Spring.) For 45,000 United miles, you can fly roundtrip to Santiago, Rio de Janeiro, or Sao Paulo.

This is nearly an exact re-run of a deal we saw in April.
Key Terms

Book by November 30, 2015.
Travel by November 30, 2015.
You must fly only United and United Express flights--no partners.
Discounted Saver Award is only valid for travel between the U.S.

Until a few weeks ago, you could change the payment currency on Airbnb to the host's currency. That saved you Airbnb's ridiculous 3% currency conversion fee. As long as you paid with a no-foreign-transaction-fee credit card, you got the conversion done for a 0% fee.

Since I've spent most of the year in Airbnb properties, that saves me a lot of money.

Then Airbnb took that option away.

For a few years, Virgin Australia Business Class award space to Australia has been a gimme. I would often find 12 Award Seats (half of which were Business) to Australia over Christmas and New Year's on Virgin Australia flights.

Update 8/19//15:

The glitch is fixed. One way search results now include partners as they should. Here's a screen shot of Los Angeles to Sydney in February 2016 in Business Class. I can assure you that none of those days with 80,000 mile Saver seats are on Delta flights. ;)

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Virgin Australia, KLM, Virgin Atlantic, and Air France flights are not displaying on delta.com on one way searches. You can search them as part of roundtrip awards. You can book them by calling Delta at 800-323-2323.

Let's take a look at the problem with Virgin Australia award space.

The offers in this post have expired.

Until August 31, 2015, United is selling miles up to 50% off.

The exact maximum discount is targeted, so you have to sign in to see your discount. My maximum discount is 50%. Even if you get the 50% discount, it only applies to purchases of at least 50,000 miles. United miles normally cost 3.76 cents each, so with a 50% discount, they cost 1.88 cents each.

After the 50% discount, 50,000 miles cost $941.

SPG Starpoints now transfer to 33 airlines with the addition of Korean SkyPass Miles to the list. Korean SkyPass is a 1:1 transfer partner, and, as with all 1:1 transfer partners, for every 20,000 points transferred, you get 5,000 bonus miles.

Examples:

15,000 Starpoints = 15,000 Korean miles
20,000Starpoints = 25,000 Korean miles
25,000 Starpoints = 30,000 Korean miles
60,000 Starpoints = 75,000 Korean miles

You can transfer Starpoints to airline miles here.