That’s a tough question to answer without knowing your starting point, but here’s some inspiration based on my own departure location.

A great route this time of year is Southeast Asia. It’s low season in many places due to the rainy season, which can make for cheaper flights. In the first two weeks of July, I found business class tickets from Amsterdam to Manila. If you fly with Air France, you’ll have a layover at CDG, at least in my case, departing from Amsterdam. That itinerary gives you 102 XP.

Return tickets are priced around €2400 to €2500. On the return leg (not the outbound), you purchase 100% SAF for the flight. That costs about €1400 and earns you an extra 140 XP. That gets you to your goal in just one week.

Total cost: €3800 to €4000. Not the best price in terms of euro per XP, but you hit your target in a single week.