My recent experience using Just fly for MY FLIGHT, BACK TO THE USA was an ORDEAL. Just fly was totally ineffective in our appeal TO CHANGE OUR RETURN DATE incompetent Copa Airlines and Just Fly after several attempts and hours on the phone, they won't change our return date they will said they don't have availability in any future date in spite of having a flexible ticket . They pushed the envelope back to Copa Airlines who did nothing and could not reassure us as to which flight we can be change. JF charged us way higher for the airfare then what they've quoted initially. JF conned us further, saying you can get better seating if you pay this; you can also get flight insurance coverage if you pay this. So all told, we got no credible response from them with our countless follow-ups, toll free customer support phone numbers that just gave us lame excuses with no effective assistance or relief whatsoever. Copa Airlines did the same when we called requesting guidelines for refund appeals and other passenger assistance support related to our dilemma that necessitated our having to get hotel booking, meal provisions and cab transport to and from the airport/hotel . Copa Airlines customer service line had an automated response that promised a return call after 6 hours, and then having gotten a return call, the next Copa call would yield an automated response of "we will return your call in 9 hours." It's quite PATHETIC. As passengers, we were HELPLESS until the next booking that we had to spend for AGAIN. In my 20 years of traveling experience, this ordeal with Just fly and Copa Airlines has truly tipped the scale to the worst.