Wow he wasn't joking, these really are the cheapest flights I've ever seen.
Total price USD 1.183
That's like, a little over 0.01 BTC.
Wait?

How's that possible?
Possible via the magic of typos. I'm sure it's supposed to say BTC 1.183.
You are right, it is an internationalization bug.
Now, all the prices are expressed in usd except the one of the checkout form that detail the total price in usd and btc. The prices in dollars use comma as decimal separator and the price in bitcoins use the dot as decimal separator.
We are working on fixing it.
Thank you!