Ryanair again offers what appears, at first blush, to be impossible: one million completely free fares. Good for travel between November 5 and January 31, they can be purchased through Monday, October 8.

While strictly speaking not too good to be true, this promotion comes with more exceptions that most. To wit: the free fares only extend to flights on Monday afternoon, Tuesday, Wednesday, Thursday before noon, and Saturday afternoon. In addition, the entire period from December 18 through January 8 is blacked out.

We’re also having a hell of a time finding these free fares on the Ryanair site, though it’s easy to find €.01 and £.01 fares with nothing but taxes to pay. Say what you will about Ryanair’s no-frills cattle-call experience and advertising bluster. If you’ve got the time to find the right fare, Ryanair’s an incredibly cheap way to fly.