The American Airlines eShopping portal is offering 50 miles per dollar spent at magazines.com through today (May 27, 2016.)

Portals are a way to earn extra miles. You start your online shopping at a portal, click a link that adds cookies to your browser to prove you started in the portal, and then purchase things on other sites at normal price while getting bonus miles.

Portals generally offer small miles per dollar at stores that have small margins. For instance, you can get 1 bonus mile per dollar at walmart.com through the American Airlines portal.

United is offering a 20% discount on roundtrip Saver economy awards booked to Hawaii by November 5, 2015 and flown October 19, 2015 to March 3, 2016. The total cost of a roundtrip is 36,000 miles during the sale. There are blackout dates from November 20, 2015 to December 3, 2015 and December 16, 2015, to January 5, 2016.

Don’t Book This Promotion
If you have United miles, this may be a good deal. If you have Ultimate Rewards, do not transfer them to United miles to book this deal.

Update: I booked myself a room. You have to check out with MasterPass. This only added a few seconds to checkout. I selected Citi as an option from the MasterPass menu and signed in with my Citi account details. I enrolled in MasterPass and added my Citi cards in a few clicks.

Through October 15, 2015, Avianca LifeMiles has discounted certain awards including intra-United States, United States to Europe, and United States to Brazil.

Combined with the sale on LifeMiles through October 8, there are some great opportunities to purchase discounted Business Class flights.

We can combine these promotions to book one way Business Class tickets to Europe for $740 and to Brazil for $600. Read this post carefully and completely to understand that process and the caveats.

The discounted awards are all listed here.

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.

I tweeted this deal first from @MileValueAlerts. Follow @MileValueAlerts on Twitter andfollow these directions to get a text message every time I tweet from that account.

Yesterday I reported that some Delta domestic awards cost only 5,000 SkyMiles one way, a 60% discount on the prevailing 12,500 mile rate we expect from legacy carriers. Other routes cost 10,000 SkyMiles one way.

Frontier's spring sale ends today. Fares start at $29 one way!

The sale is valid for bookings made by 11:59 PM ET on March 25 for domestic, nonstop travel on Tuesdays, Wednesdays, and Saturdays between April 14 and May 20.

Here is the sale page and restrictions. Here are the sale city pairs.

I had no trouble pricing out Washington to Chicago for $29.

Fees
Frontier now follows the ultra-low-cost, fee-for-everything model.

Seat selection costs $4+.

Frontier Airlines is having a one day sale today with fares from $19 to $49 from Atlanta, Georgia to:

Austin
Chicago-O’Hare
Cincinnati
Cleveland
Denver
Indianapolis
Las Vegas
Los Angeles
Miami
Minneapolis/St. Paul
New Orleans
New York-La Guardia
Orlando
Philadelphia
Trenton/Princeton
Washington-Dulles

Tickets must be purchased by 11:59 PM ET today (February 24) for nonstop travel on:

April 30, 2015
May 5, 6, 12, 13, 19, 20, 27, 2015

These are all Wednesdays and Thursdays.

These promotional fares sell out really quickly.

United has posted a statement saying that it will not honor the mistake fares I posted about this morning that allowed one way or roundtrip First Class bookings from the United Kingdom to the United States for $100 or so. Here is the entire statement:
United is voiding the bookings of several thousand individuals who were attempting to take advantage of an error a third-party software provider made when it applied an incorrect currency exchange rate, despite United having properly filed its fares.