DCC with some of these low priced value airlines can be a very tricky business. For example, in March, I was trying to purchase an Easy Jet ticket from Copenhagen to London (Gatwick). The price was quoted in DKK. Out came my trust currency calculaator and I tried it in USD and in GBP (Easy Jet is, of course, based in Great Britain). It turned out in this case the fee in DKK was the cheapest although the spread wasn't really all that much. The two issues with any of these purchases are whether dcc is involved and if you are using a credit card with a ftf just where the transaction is processed. Sometimes the later isn't clear (just ask the number of people in the example I cited above i.e. people who buy tickets from Orbitz denominated in USD on a foreign airline and then get nailed with a ftf). Happens every day of the week and twice on Sunday unfortunately.