There are many ways to travel cheaply, foremost is to book your hotels and airline tickets during promo sales or during off peak months and days so you will have discounts. And when you are traveling to Another Country or place, it's best if you stay in affordable hotels instead of choosing to stay in posh expensive hotels since you will be out exploring most of the time and not inside your hotel room.
"economical" has no comparative or superlative form. You would say "more economical" or "most economical."
Whether it costs you more or not to travel alone as a senior depends on the type of traveling you do. If you go for high end traveling that is always more expensive than economical traveling.
plane
There is no right answer for that. Kinds of both soft and hard are economical.
There are two easy ways to find economical hotels in Ireland. The first option is to contact a travel agent, explain your needs and your budget to your agent and be realistic about you expectations. Secondly travel sites can be a helpful tool. Most travel sites will have photos of the rooms, a list of amenities, and price ranges for different rooms.
It is easier more economical
Safer, more productive, more economical.
Gas heaters can be more economical. If there is a high supply of gas in the area it would have cheaper prices. Electric can be cheaper in other areas though.
If your parents would like to travel but are looking for an economical way to do it, they can check out traveltalk.com or use services such as hotwire.com or priceline.com
In theory, yes, rechargeable flashlights are more economical than regular flashlights, however you have to be careful to not overcharge your batteries otherwise they will run out quickly
Hand dryers can be more economical in the long run provided that they are energy efficient. You should show your employer the energy efficient models.
They have a fair economical condition, or they have a hard economical condition. It's missing an adjective for the noun 'economical.' When "economical" is used as a preposition it is correct to say : They have an economical condition, with the meaning of profitable.