May is the cheapest month to fly this route, with average fares around $1050 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1050 | $917 | Best | |
| June 2026 | $1152 | $917 | Peak | |
| July 2026 | $1090 | $999 | ||
| August 2026 | $1060 | $1045 |
Departing on Wednesday offers the lowest average fares at $1052. Thursday departures are the most expensive at $1195, a difference of $143.
The best time to fly is May. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Detroit to London is May, with average round-trip fares around $1050. The lowest fare found in May is $917.
Wednesday departures are the cheapest, averaging $1052 round trip. The most expensive day is Thursday at $1195.
Based on current pricing trends, booking for May travel offers the best value. Avoid June if possible, as fares average $1152 compared to $1050 in the cheapest month. July is a solid middle-ground option at $1090.
Flying in May instead of June can save you approximately $102 per round trip. The cheapest month averages $1050 while the most expensive averages $1152.
Airlines, flight times, price calendar, and more for Detroit to London
View DTW → LHR Details