Cheap flights from London to Istanbul
Yes — prices are unusually low right now. The cheapest London–Istanbul return we've seen recently is £79; the median across 336 observations is £105, and the lowest we've ever recorded is £71 (15 August 2026).
Prices last observed 5 September 2026 · 336 observations · 56 days of history
Based on 336 daily price observations by Flight Signal since 10 Jul 2026, the median return fare London–Istanbul is £105; the cheapest we've recorded is £71 (15 Aug 2026).
Is now a good time to book?
The cheapest London–Istanbul return we observed in the last 10 days is £79. Over 336 observations the median is £105 (cheapest quartile £96, dearest quartile £193). Our method: we compare the cheapest fare observed in the last 10 days against the full distribution of every fare we've recorded on this route — how the scoring works.
Cheapest by London airport
Lowest return fare we've attributed to each departure airport (metro-only "LON" fares are excluded — they can't be pinned to one airport).
| Airport | Cheapest observed |
|---|---|
| LHR | £196 |
| LGW | £84 |
| LTN | £79 |
| STN | £71 |
Track this route
Flight Signal watches London–Istanbul fares every day and pushes the genuine drops to your phone — scored against this exact history, with a booking link.
Get deal alerts for IstanbulFrequently asked
What is the cheapest London to Istanbul flight?
The cheapest return fare Flight Signal has observed on London–Istanbul is £71, recorded on 15 August 2026. Across 336 observations the median is £105.
Is now a good time to book a flight from London to Istanbul?
Yes — prices are unusually low right now. The cheapest London–Istanbul return we observed in the last 10 days is £79. Over 336 observations the median is £105 (cheapest quartile £96, dearest quartile £193).
How much does a return flight from London to Istanbul usually cost?
The median observed return fare is £105, with most fares between £96 (cheapest quartile) and £193 (dearest quartile), based on 336 daily observations.
Which London airport is cheapest for flights to Istanbul?
In our observations the cheapest fare to Istanbul departed from STN (£71). We track all five London airports — Heathrow, Gatwick, City, Luton and Stansted.
Prices are cached observations from licensed fare data, indicative until you check live. Flight Signal never auto-books.