Does a Cash & Miles ticket earn full XP?

Yes, Cash & Miles earns full XP

Good question, and I can see the logic behind it. A Cash & Miles booking earns XP exactly like a fully paid ticket in the same cabin class. The XP calculation is based on your booking class and route, not on how you paid for the ticket. So whether you pay full cash or use Cash & Miles, the XP is identical.

And yes, you can absolutely add a SAF contribution to a Cash & Miles booking. SAF is available on any booking made through KLM.com or AirFrance.com, regardless of ticket type. You can even add SAF to full award tickets.

But I would strongly advise against this strategy

Here is the problem: while you technically earn XP, you are burning miles at a terrible exchange rate. With Cash & Miles, you effectively "buy back" part of the ticket with miles at a value of roughly 0.5 to 1.0 eurocent per mile. That is far below what those miles are worth when used smartly.

Consider the alternative: a Business Class Promo Reward to a long-haul destination can get you 3 to 5 eurocent per mile in value. That is 3 to 5 times more than what you get from Cash & Miles. You are essentially sacrificing a high-value future redemption to save a small amount of cash today.

What to do instead

If your goal is to earn XP efficiently, here are better approaches:

• Book a regular paid ticket and keep your miles for a high-value award redemption like a Business Class sweet spot
• Add SAF to your paid bookings for extra XP at roughly EUR 10 per XP
• Use hub connections (flights via CDG or AMS) to maximize segments and XP per trip
• Get a Flying Blue Amex card for 30 or 60 bonus XP per year without flying

The bottom line: Cash & Miles does earn XP, but the miles you burn could have been worth far more elsewhere. Pay cash for XP, save your miles for high-value redemptions.