Cheap Flights from London to Cairns
Round-trip economy fares between London (LHR) and Cairns (CNS) average A$1,799 across the year. Book for March and typical prices fall to A$1,583. The 15,153 km hop takes about 18.4 hours non-stop, and the nicest window to visit Cairns is June – September (dry season, best Reef visibility).
Today's tracked low
A$1,361 −14% vs. seasonal low
Not flying from London? See Cairns deals from your nearest hub.
When is the cheapest time to fly from London to Cairns?
Average round-trip economy fare by departure month. March is the statistical sweet spot at A$1,583.
| Month | Avg. round-trip | vs. yearly average |
|---|---|---|
| January | A$1,691 | −A$108 |
| February | A$1,619 | −A$180 |
| March Cheapest | A$1,583 | −A$216 |
| April | A$1,727 | −A$72 |
| May | A$1,871 | +A$72 |
| June | A$2,087 | +A$288 |
| July | A$2,195 | +A$396 |
| August | A$2,123 | +A$324 |
| September | A$1,979 | +A$180 |
| October | A$1,871 | +A$72 |
| November | A$1,655 | −A$144 |
| December | A$1,763 | −A$36 |
Travel Readiness & Connectivity — Australia
ETA / eVisitor authorisation required before boarding.
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7 days
3 GB data
A$12.00 · A$1.71/day
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14 days
5 GB data
A$22.00 · A$1.57/day
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30 days
10 GB data
A$33.00 · A$1.10/day
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London to Cairns flight FAQs
- What is the cheapest month to fly from London to Cairns?
- March is typically cheapest, with round-trips from A$1,583 — about A$216 under the yearly average of A$1,799.
- How long is the flight from London to Cairns?
- Non-stop services cover the 15,153 km route in roughly 18.4 hours.
- When is the best time to visit Cairns?
- June – September (dry season, best Reef visibility). Entry requirements: ETA / eVisitor authorisation required before boarding.