Fly with Turkish Airlines from London to Istanbul (return) for £146 including taxes and check-in baggage. Turkish Airlines was named the Best Airline Europe in 2011. The fare is available for travels between 1st November through 20th March 2013. Sale ends on 31st December.
Please Check Expedia, if you’re looking for a place to stay. Prices for double rooms start from £17. I can recommend the 3 Star Angel’s Home Hotel which is located in Istanbul (Sultanahmet), close to Mosaic Museum, Blue Mosque, and Hagia Sophia. Also nearby are Hippodrome and Basilica Cistern. Prices for a night in a double room start from £36, including breakfast and free WiFi.
Check the pictures in the first comment for a 5 Days / 4 Nights Travel Example in November.
Sebastian from Holidaypirates.com