Cheap Flights from Cairns to London
Round-trip economy fares between Cairns (CNS) and London (LHR) average A$1,799 across the year. Book for January and typical prices fall to A$1,475. The 15,153 km hop takes about 18.4 hours non-stop, and the nicest window to visit London is May – September.
Today's tracked low
A$1,239 −16% vs. seasonal low
Not flying from Cairns? See London deals from your nearest hub.
When is the cheapest time to fly from Cairns to London?
Average round-trip economy fare by departure month. January is the statistical sweet spot at A$1,475.
| Month | Avg. round-trip | vs. yearly average |
|---|---|---|
| January Cheapest | A$1,475 | −A$324 |
| February | A$1,511 | −A$288 |
| March | A$1,691 | −A$108 |
| April | A$1,835 | +A$36 |
| May | A$1,979 | +A$180 |
| June | A$2,159 | +A$360 |
| July | A$2,267 | +A$468 |
| August | A$2,195 | +A$396 |
| September | A$1,871 | +A$72 |
| October | A$1,727 | −A$72 |
| November | A$1,583 | −A$216 |
| December | A$1,943 | +A$144 |
Travel Readiness & Connectivity — United Kingdom
UK ETA required for visa-exempt nationals since 2025.
Instant eSIM data for United Kingdom
7 days
3 GB data
A$14.50 · A$2.07/day
Activate before takeoff →
14 days
5 GB data
A$26.00 · A$1.86/day
Activate before takeoff →
30 days
10 GB data
A$39.00 · A$1.30/day
Activate before takeoff →
EKTA travel insurance
Trusted worldwide coverage from $0.99 USD/day
START PLAN
Basic coverage
From $0.99 /day
Get a Quote →
GOLD PLAN
Extended coverage + COVID-19
From $1.99 /day
Get a Quote →
PLATINUM PLAN
Premium worldwide coverage
From $2.99 /day
Get a Quote →
Prices shown in USD. Get an instant quote personalised to your trip dates and age.
- COVID-19 covered
- Instant policy by email
- Valid in 70+ countries
- Cancel anytime
Sleep near the action in London
Compare hotel and apartment rates for your January dates.
Alert me when prices drop for this route
Current low: A$1,475 round-trip. One email when it dips — no newsletters, no spam.
Cairns to London flight FAQs
- What is the cheapest month to fly from Cairns to London?
- January is typically cheapest, with round-trips from A$1,475 — about A$324 under the yearly average of A$1,799.
- How long is the flight from Cairns to London?
- Non-stop services cover the 15,153 km route in roughly 18.4 hours.
- When is the best time to visit London?
- May – September. Entry requirements: UK ETA required for visa-exempt nationals since 2025.