I just learned yesterday that Elderhostel, founded in 1975 and providing educational travel programs for adults, is now Road Scholar:  http://www.roadscholar.org/.  What a fantastic organization!   Not-for-profit Road Scholar offers a multitude of travel programs -- "Choose from 6,500 educational adventures a year in all 50 states and 150 countries" providing in-depth learning opportunities as you explore new places.  I would love to take cooking classes in Tuscany, explore a national park with an experienced geologist, or attend a music festival where you also attend private seminars and lectures with the musicians.  You can sign up on the website for a free catalog and the e-newsletters.

Fewer airlines offer discounts to seniors as in the past, but Cheap Flights offers an overview of those that do here:  http://www.cheapflights.com/travel-tips/senior-discounts/.   Sources say that the cheapest day to fly is Wednesday, followed by Tuesday and Saturday.  The best time to buy airline tickets is 3:00 pm ET on Tuesdays. -- and about six weeks before a flight.  Amtrak offers a 15% discount to senior passengers with some restrictions.  "Amtrak travelers 62 years of age and over are eligible to receive a 15% discount on the lowest available rail fare on most Amtrak trains. On cross-border services operated jointly by Amtrak and VIA Rail Canada, a 10% Senior discount is applicable to travelers aged 60 and over."  The restrictions are listed on Amtrak's website: 

http://www.amtrak.com/servlet/ContentServer?c=Page&pagename=am%2FLayout&cid=1241305460008.  Certain cruise lines offer senior discounts on specific sailing dates and there are many websites offering cruise discounts for seniors, including this one: http://cruisesandseniors.com/.  Happy travels! ♥