Last year I described our positive experience with Allianz when we had to cancel a trip:
At that time, they told me that we would be able to file a claim for any flight credit that we were unable to use after it expired. While I was able to use all of my flight credit, my daughter's schedule made it impossible for her to use all of hers--she had about $1,000 worth of credit that expired. Her one trip policy included $1,000 trip cancellation coverage, and we made a $94 claim last year to cover some nonrefundable tickets. We were just informed that Allianz will cover about $914 of her expired flight credit.
It only took 3 Allianz business days to process the claim.