The 3-year sweep
Airlines and cards owe travelers refunds and compensation every year that go unclaimed, because nobody checks flight by flight. Add the trips that went wrong and we'll total up what you may be owed.
A delay, a cancellation, a late bag, a bump, the ones you remember. Most people have two or three worth checking.
What you found
Checking one flight is free. What you can't do by hand is keep all of these straight and beat every filing deadline. That's the membership.
Creates your account, then secure checkout. Cancel anytime.