Cheap Flights from Bangkok to London
Round-trip economy fares between Bangkok (BKK) and London (LHR) average A$1,057 across the year. Book for January and typical prices fall to A$867. The 9,577 km hop takes about 11.9 hours non-stop, and the nicest window to visit London is May – September.
Today's tracked low
A$754 −13% vs. seasonal low
Not flying from Bangkok? See London deals from your nearest hub.
When is the cheapest time to fly from Bangkok to London?
Average round-trip economy fare by departure month. January is the statistical sweet spot at A$867.
| Month | Avg. round-trip | vs. yearly average |
|---|---|---|
| January Cheapest | A$867 | −A$190 |
| February | A$888 | −A$169 |
| March | A$994 | −A$63 |
| April | A$1,078 | +A$21 |
| May | A$1,163 | +A$106 |
| June | A$1,268 | +A$211 |
| July | A$1,332 | +A$275 |
| August | A$1,290 | +A$233 |
| September | A$1,099 | +A$42 |
| October | A$1,015 | −A$42 |
| November | A$930 | −A$127 |
| December | A$1,142 | +A$85 |
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Bangkok to London flight FAQs
- What is the cheapest month to fly from Bangkok to London?
- January is typically cheapest, with round-trips from A$867 — about A$190 under the yearly average of A$1,057.
- How long is the flight from Bangkok to London?
- Non-stop services cover the 9,577 km route in roughly 11.9 hours.
- When is the best time to visit London?
- May – September. Entry requirements: UK ETA required for visa-exempt nationals since 2025.