OK, don’t get too excited. First of all, it’s the usual airline routine of advertising a base price. Then, with taxes, baggage, food, drink and other fees, the actual one-way, out-of-pocket cost is about $120. Of course, that’s still a fantastic bargain, with regular airline overseas prices starting at $500 and soaring skyward.

Also, the special low fare is for a limited number of flights only to and from several northeast US airports and destinations in Europe. And Norwegian may end the promotion at any time when bookings get heavier. For more info, go to www.norwegian.com

A: The simple answer is: Sometimes, when you do your homework before booking. If at all possible, never agree to a listed price until you’ve done thorough research with online travel sites, airline ads and your favorite hometown travel agency.

Just recently, an online agency, bookingbuddy.com, ran an ad with the headline: 80% Off Senior Flights? Note question mark. Not quite the truth. Lower down on the site, there’s a long explanation about how to get such offers.

Your travel4seniors.com editor has cruised into many ports. Some were delightful, while others crime-controlled, dirty, bad food and/or rip-off tourist traps.

Senior cruisers wandering through food markets ashore are particularly vulnerable in the most dangerous port cities. They’re typically dressed in very obvious tourist clothes, with dangling handbags, smartphones glued to ears and wallets wide open as they buy from street stands.

Do research before your ship docks. Check on the history of the area, especially about violence, disease, poor sanitation and other negative info. If it seems unattractive or dangerous to you, and you’re physically-limited, stay aboard your cruise ship. However, if you insist on touring with such negative potential, go only with a group of other passengers, preferably accompanied by professional guides throughout the shore visit.

Of course, Sin City isn’t called that for nuthin’. Let’s call it the sin of gotcha about room rates! That bargain charge will show at the top of the list when you check out, but then is followed by all kinds of extra charges. They always raise what you actually pay to as much as double the advertised price.

Piled on are taxes and other add-ons, including the city’s infamous resort fees. Just recently, Caesars Palace, Paris, Rio, Bellagio, Mandalay Bay and MGM Grand upped their per-day extra charges to as much as $45 a night above their rates.

So, next time you book a $19.99 Las Vegas room, be prepared to pay an add-on charge that will subtract-off a considerable amount from your bank account!