June is the cheapest month to fly this route, with average fares around $121 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $213 | $134 | ||
| June 2026 | $121 | $99 | Best | |
| July 2026 | $234 | $116 | ||
| August 2026 | $264 | $231 | Peak |
Departing on Tuesday offers the lowest average fares at $167. Sunday departures are the most expensive at $207, a difference of $40.
The best time to fly is June. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from London to Istanbul is June, with average round-trip fares around $121. The lowest fare found in June is $99.
Tuesday departures are the cheapest, averaging $167 round trip. The most expensive day is Sunday at $207.
Based on current pricing trends, booking for June travel offers the best value. Avoid August if possible, as fares average $264 compared to $121 in the cheapest month. July is a solid middle-ground option at $234.
Flying in June instead of August can save you approximately $143 per round trip. The cheapest month averages $121 while the most expensive averages $264.
Airlines, flight times, price calendar, and more for London to Istanbul
View LHR → IST Details