I will spend over 200 nights this year in Airbnb apartments--here's where I am sleeping in 2015--so three pieces of news about Airbnb caught my eye today.

Most (all?) AMEX cards are offering $50 off a $100 Airbnb purchase made by 12/31/15.
You can use AMEX Membership Rewards to pay for Airbnb stays.
You can earn Virgin America Elevate points for Airbnb stays.

Right now, if you sign up for Airbnb through my referral link, you’ll get $25 off your first stay, and I’ll get $25 off my next stay.

WOW Air, the airline famous for $99 fares from Boston and Baltimore to Iceland, will begin flying from Los Angeles and San Francisco to Iceland in summer 2016.

American Airlines miles are some of the most valuable miles in the world because Delta and United gutted their award charts in 2014, but American hasn't devalued for several years. The merger with US Airways further put on hold any negative changes to the award chart, but that merger is now complete. So I think we are in the stretch run for earning and redeeming American Airlines miles at the current favorable rates.

Last week, the Citi® / AAdvantage® Executive World Elite™ MasterCard® dropped its bonus from 75,000 to 50,000 American Airlines miles.

Citi offers Price Rewind as a free feature on its personal cards like the Citi Prestige® Card, Citi ThankYou® Premier Card, Citi® Hilton HHonors™ Reserve Card, Citi® Hilton HHonors™ Visa Signature® Card, Citi® / AAdvantage® Platinum Select® MasterCard®, Citi® Double Cash Card – 18 month BT offer, and Citi® / AAdvantage® Executive World Elite™ MasterCard®. Basically you register purchases online and if the price drops within 60 days, Citi refunds you the difference up to $1,200 per year.

The process is explained clearly in this video.

https://www.youtube.com/watch?v=ARluzc7F6cw

Or, if you prefer, this infographic.

Citi Price Rewind has

The LifeMiles Visa Signature Card from US Bank now offers 35,000 bonus Avianca LifeMiles after $2,500 in purchases within the first 90 days of account opening.

A Russian airline's A321 has crashed shortly after taking off from Sharm el-Sheikh, Egypt, killing 224 onboard. (The airline's name is variously given as Kogalymavia or Metrojet.

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

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

The Barclaycard Arrival Plus™ World Elite MasterCard® comes with 40,000 bonus Arrival miles after spending $3,000 on purchases in the first 90 days.

You also earn 2x miles on all purchases with the card. That means you'll have at least 46,000 Arrival miles after meeting the minimum spending requirement.

Arrival miles are worth about 1.075 cents each toward travel, so meeting the minimum spending requirement is worth about $495 in free travel.