Cheap Flights from Adelaide (ADL) to London (LHR) from HK$5,313~

Round-trip journeys between Adelaide Airport and Heathrow Airport (LHR) start from . This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.

The majority of flights can be conveniently canceled online, but whether you incur a fee differs between airlines. If you do have to cancel your getaway, follow the instructions in the Customer Service Portal.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ADL to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.

You'll have 16,300 kilometers to cover on the long-haul Adelaide to Hounslow route. Wear comfy clothes and consider taking earplugs and a sleep mask.

Right now, no airlines offer flights directly from ADL to LHR. You'll need to book a flight with one or more stops. To score the best connections and price, lock in your fare well ahead of time.

Last-minute planners can occasionally find a bargain, with some super cheap fares from Adelaide Airport to Heathrow Airport (LHR) surfacing a few weeks prior to the departure date. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals frequently — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines quote prices that far in advance.