June is the cheapest month to fly this route, with average fares around $98 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $115 | $47 | ||
| June 2026 | $98 | $53 | Best | |
| July 2026 | $134 | $90 | Peak | |
| August 2026 | $111 | $87 |
Departing on Wednesday offers the lowest average fares at $91. Sunday departures are the most expensive at $171, a difference of $80.
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 Prague to London is June, with average round-trip fares around $98. The lowest fare found in June is $53.
Wednesday departures are the cheapest, averaging $91 round trip. The most expensive day is Sunday at $171.
Based on current pricing trends, booking for June travel offers the best value. Avoid July if possible, as fares average $134 compared to $98 in the cheapest month. May is a solid middle-ground option at $115.
Flying in June instead of July can save you approximately $36 per round trip. The cheapest month averages $98 while the most expensive averages $134.
Airlines, flight times, price calendar, and more for Prague to London
View PRG → LHR Details