Hey, December 20- Jan 5 will be one of the most revenue generating periods for airlines (after festivals, always). So, high probability is that prices will surge. I suggest you to book your tickets after comparing prices on all discount providing sites (goibibo, happyeasygo, skyscanner). Also, look out for offers and try to get maximum possible discount. tip: lookout for offers from credit cards with points redeemable at airmiles eg. HDFC credit cards. Have a safe journey!
We are already planning for 20th to 23rd DEC and I see fares hiking drastically with every passing day. There is no point in waiting any further and chances are more that you end up not getting good place to stay. so its better you book everything well before a month to go.. Happy Vacation in Advance ๐
End of Dec to 1st week of Jan is very costly in Goa. they increase the price by 50%. try after that or if you want to go anyways then finish the bookings ASAP