August is the cheapest month to fly this route, with average fares around $962 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1140 | $1012 | Peak | |
| June 2026 | $1132 | $1075 | ||
| July 2026 | $1046 | $929 | ||
| August 2026 | $962 | $944 | Best |
Departing on Monday offers the lowest average fares at $1056. Friday departures are the most expensive at $1121, a difference of $65.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Miami to London is August, with average round-trip fares around $962. The lowest fare found in August is $944.
Monday departures are the cheapest, averaging $1056 round trip. The most expensive day is Friday at $1121.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1140 compared to $962 in the cheapest month. June is a solid middle-ground option at $1132.
Flying in August instead of May can save you approximately $178 per round trip. The cheapest month averages $962 while the most expensive averages $1140.
Airlines, flight times, price calendar, and more for Miami to London
View MIA → LHR Details