Wendy Wu Tours is offering a free one-way upgrade to Premium Economy when booking selected Vietnam tours departing in 2018, valued at up to $1360 a person. Or, upgrade both ways from $99 a person.

This deal applies to such itineraries as the Vietnam at a Glance - 12-day Classic Tour which includes cruising the Limestone Karsts of Halong Bay, seeing daily life as you cruise down the Mekong Delta and seeing the royal tombs of Hue. From $3390 a person twin share.

Or choose the Vietnam Explorer - 13-day Immerse Yourself Flexible Tour, which includes a walking tour of Hanoi, a day in Hue, the Cu Chi Tunnels and more. From $3280 per person twin share.

Offer valid on new bookings made before December 20. Phone 1300 727 998. See wendywutours.com.au