August is the cheapest month to fly this route, with average fares around $1028 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1213 | $1096 | Peak | |
| June 2026 | $1181 | $1082 | ||
| July 2026 | $1115 | $1025 | ||
| August 2026 | $1028 | $1020 | Best |
Departing on Tuesday offers the lowest average fares at $1108. Friday departures are the most expensive at $1221, a difference of $113.
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 Raleigh to London is August, with average round-trip fares around $1028. The lowest fare found in August is $1020.
Tuesday departures are the cheapest, averaging $1108 round trip. The most expensive day is Friday at $1221.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1213 compared to $1028 in the cheapest month. June is a solid middle-ground option at $1181.
Flying in August instead of May can save you approximately $185 per round trip. The cheapest month averages $1028 while the most expensive averages $1213.
Airlines, flight times, price calendar, and more for Raleigh to London
View RDU → LHR Details