August is the cheapest month to fly this route, with average fares around $1067 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1365 | $1291 | Peak | |
| June 2026 | $1350 | $1184 | ||
| July 2026 | $1219 | $1110 | ||
| August 2026 | $1067 | $983 | Best |
Departing on Monday offers the lowest average fares at $1246. Friday departures are the most expensive at $1332, a difference of $86.
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 Austin to London is August, with average round-trip fares around $1067. The lowest fare found in August is $983.
Monday departures are the cheapest, averaging $1246 round trip. The most expensive day is Friday at $1332.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1365 compared to $1067 in the cheapest month. June is a solid middle-ground option at $1350.
Flying in August instead of May can save you approximately $298 per round trip. The cheapest month averages $1067 while the most expensive averages $1365.
Airlines, flight times, price calendar, and more for Austin to London
View AUS → LHR Details