August is the cheapest month to fly this route, with average fares around $1107 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1339 | $1219 | Peak | |
| June 2026 | $1329 | $1136 | ||
| July 2026 | $1163 | $1121 | ||
| August 2026 | $1107 | $1057 | Best |
Departing on Wednesday offers the lowest average fares at $1204. Saturday departures are the most expensive at $1316, a difference of $112.
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 Salt Lake City to London is August, with average round-trip fares around $1107. The lowest fare found in August is $1057.
Wednesday departures are the cheapest, averaging $1204 round trip. The most expensive day is Saturday at $1316.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1339 compared to $1107 in the cheapest month. June is a solid middle-ground option at $1329.
Flying in August instead of May can save you approximately $232 per round trip. The cheapest month averages $1107 while the most expensive averages $1339.
Airlines, flight times, price calendar, and more for Salt Lake City to London
View SLC → LHR Details