Cheap flights from Detroit to London from £148

The cheapest month to fly to London from Detroit is in October. Flight prices, which tend to average around £540, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Detroit averaging around £600.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £737. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Detroit to London for around £819.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £771. Flights in the afternoon are often more expensive, with an average ticket price of £881.

Fly from Detroit Metropolitan Wayne County to London Heathrow for the best Detroit - London flight prices

You are more likely to see cheaper flights to London from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £742 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Detroit for as low as £537 on momondo.

There are 3 cabin classes available to choose from on Detroit to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Reykjavik (KEF) was the most common stop: 56% of momondo users choosing one-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average return price of £442.

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 9h 15m.

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 25m.

As of February 2026, there are 4 flights per day flying from Detroit to London. The most common time of day flights depart is 20:00, with 100% of flights taking off in the evening.

30 flights are operational weekly from Detroit to London as of February 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.