Cheap flights from Detroit to London from £239

In general, January is the cheapest month to fly from Detroit to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £671. The month of August is another great option to travel to London Heathrow Airport, with average flight prices from Detroit averaging around £797.

On average, the least expensive day to fly to London Heathrow Airport from Detroit is on a Thursday. momondo users have found tickets for Thursday departures for as low as £815. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Tuesday is £1,136.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Detroit to London Heathrow Airport in the evening for as low as £850. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £927 on average. Flights to London Heathrow Airport from Detroit in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £909 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Detroit for as low as £768 on momondo.

There is only 1 cabin class available to choose from on Detroit to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 26% on your flight if you consider stops on a Detroit to London Heathrow Airport flight.

As of October 2026, prices for Detroit to London Heathrow Airport flights are approximately 36% cheaper when compared to flights at the same time last year.

Boston (BOS) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average return price of £691.

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

Toronto (YYZ) has the shortest average stopover time for this route: 1h 28m.

As of October 2026, there are 6 flights per day flying from Detroit to London Heathrow Airport. The most common time of day flights depart is 18:00, with 100% of flights taking off in the evening.

42 flights are operational weekly from Detroit to London Heathrow Airport as of October 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.