Norwegian Airlines says that a defective part caused our cancellation. Can I get compensation?

First, Michele Matarese’s flight was canceled. Then it was delayed for for two days. And finally, Norwegian Airlines refused to reimburse her expenses, claiming that the cancellation was due to an “extraordinary circumstance” — a defective part.

Why did American refuse my upgrade on a flight with empty first class seats?

When Kong Ho pays $500 for Gold elite membership in American Airlines’ AAdvantage program, he expects to reap the benefits. Unfortunately, the airline has a different idea. Can our advocates help upgrade Ko’s experience with the world’s largest airline?

American Airlines canceled my flight three days in a row. What does it owe me?

When Andre Yavetsky tried to fly from Chicago to Madrid on American Airlines, his flight was diverted to JFK, and he unexpectedly spent three days in New York. American initially offered him 15,000 miles in compensation, but Yavetsky wants more.

Our pilot’s sudden illness caused a flight diversion. Is this an “extraordinary circumstance?”

A sick pilot is definitely an unusual circumstance on a flight. But is it an “extraordinary circumstance” that would exempt the airline from having to compensate the passengers, such as Frederick Brodzinski, for expenses and losses?

There were larvae in my room. Shouldn’t Hotels.com refund me?

When Stephanie Slovon discovers that her hotel room is infested with insects, she immediately checks out, but is stung by Hotels.com’s refusal to issue her a refund. Can some buzz from our advocates in Hotels.com’s ear produce some compensation for Slovon?

Having a complicated citizenship caused an expensive problem for this traveler

Leon Razzon is convinced that his daughter, Lora, should have been permitted to fly from Raleigh-Durham to Istanbul with only a U.S. Passport, which was about to expire, and a Turkish citizen card. American Airlines denies her boarding — and now he wants compensation.

Airberlin won’t compensate you for “time and inconvenience,” but will they pay for your missing clothes?

When Timothy Korst’s Airberlin flight arrives in Paris without his baggage, he files a claim for his lost bags. But Airberlin will not offer as much compensation as he wants — including reimbursement for “time and inconvenience.” Is Korst out of luck?

British Airways goes on the blink. What should I expect?

British Airways: “The World’s Favourite Airline.”

I know what you’re thinking. I must be joking. Certainly, Lynne Farrow from Arlington, Va., will think I am. She was one of the 75,000 passengers stranded when British Airways (BA) had a worldwide IT systems failure on May 28.

Delta delayed our flight and the stress almost made my wife miscarry our baby

Darren Johnson and his wife were forced to cut short their trip to St. Thomas in order to return to Salt Lake City to be with their daughter, who needed major surgery. On the way home, Johnson and his wife found themselves stuck in the Atlanta airport during the infamous Delta computer outage of August 2016.

Get smart. Sign up for the newsletter.