Cheap flights from Detroit to London from $351

The cheapest month to fly to London from Detroit is in September. Flight prices, which tend to average around $51, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from Detroit averaging around $51.

The cheapest day to depart from Detroit to London is on a Sunday. Travelers who choose to depart for London on a Sunday will often find tickets for as low as $938. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,071. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Detroit in the evening is the least expensive time of day to depart. momondo users have found prices as low as $963 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $1,227. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,124 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Detroit for as low as $677 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.

You could potentially save up to 2% on your flight if you consider stops on a Detroit to London flight.

As of July 2026, prices for Detroit to London flights are approximately 39% cheaper when compared to flights at the same time last year.

JetBlue, Lufthansa, and SWISS are the most popular carriers operating from Detroit to London

Delta, JetBlue and Air France are the top three most popular airlines that fly to London from Detroit according to our data. Delta is the first choice among our users, with 45% of people opting to fly with this airline when traveling to London. Keep in mind that there are 10 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Boston (BOS) was the most common stop: 36% of momondo users choosing 1-stop flights on this route connected there.

Flights via Boston (BOS) offer the lowest average round-trip price of $160.

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

Amsterdam (AMS) has the shortest average layover time for this route: 1h 05m.

As of July 2026, there are 5 flights per day flying from Detroit to London. The most common time of day flights depart is 6:00PM, with 100% of flights taking off in the evening.

The number of flights available between Detroit and London is 35 per week as of July 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.