Question : How long do most people stay in Luxembourg?
Answer : Of course you're not most people, but if you were, you'd stay roughly 10 days.
Question : Is the price you found a good deal?
Answer : Prices for this trip tend to fluctuate a lot less than other flights from Japan. They can range from $3,921 to $4,592. Prices tend to be lower the further out you book.
Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in November is Friday. Being flexible with your travel days garners even more savings during booking.
Question : What is the cheapest round-trip ticket you can get to Luxembourg?
Answer : SAS is your best bet for finding that coveted low fare. They're offering fares as low as $3,921, while prices for other flights are as high as $4,592.