Insight Vacations is offering free flights on 17 of its top-selling escorted journeys of 16 days or more.
One of those is the extensive 18-day Romantic Britain & Ireland itinerary, which takes participants round-trip London through British and Irish highlights such as Stratford, Edinburgh, Loch Ness and the Cliffs of Moher.
You stay in excellent central hotels, get breakfast daily and several dinners and airport transfers.
Priced from $5995 a person twin share, available departures are between April 26 and September 27.
The offer applies to bookings made and paid in full by December 15.
Phone 1800 001 781. See www.insightvacations.com