in brief: Want to save £16 (A$25) on the Heathrow Express ticket for your next trip to London?
Book your Heathrow Express ticket through the website of Spanish airline Iberia (one of Qantas' oneworld alliance partners) and you'll score 50 percent off the cost of a single or return journey between London Heathrow and Paddington stations.
With the cost of a return trip usually £32 (A$49) in standard Express Class, that's a very welcome saving.
The offer's only good until 17 June, and you must purchase the ticket online using the special Iberia link.
You don't need to buy an Iberia airfare to take advantage of this deal, although technically you have to be an Iberia customer -- but we won't rat you out.
Besides which, if you're arriving into London on a Qantas flight then it's an Iberia codeshare anyway, and if you're connecting to a British Airways flight, well, BA and Iberia have the same owners. So let's not split hairs!
Book quickly, though -- if the deal gets too popular then it may well disappear before the 17 June cut-off.
Thanks to Australian Business Traveller reader Pat Mason for the tip.
About John Walton
Aviation journalist and travel columnist John took his first long-haul flight when he was eight weeks old and hasn't looked back since. Well, except when facing rearwards in business class.