Cheap flights from Atlanta to London from £186

The cheapest month to fly to London from Atlanta is in October. Flight prices, which tend to average around £495, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Atlanta averaging around £530.

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £593. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Atlanta to London for around £744.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £616. Flights in the evening are often more expensive, with an average ticket price of £663.

Fly from Atlanta Hartsfield-Jackson to London Heathrow for the best Atlanta Hartsfield-Jackson - London flight prices

You are more likely to see cheaper flights to London from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £639 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 Atlanta for as low as £608 on momondo.

There are 3 cabin classes available to choose from on Atlanta Hartsfield-Jackson 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 26% on your flight if you consider stops on a Atlanta to London flight.

As of March 2026, prices for Atlanta to London flights are approximately 2% cheaper when compared to flights at the same time last year.

JetBlue, United Airlines, and Air Europa are the most popular carriers operating from Atlanta Hartsfield-Jackson to London

Virgin Atlantic, British Airways and KLM are the top three most popular airlines that fly to London from Atlanta according to our data. Virgin Atlantic is the first choice among our users, with 66% of people opting to fly with this airline when travelling to London. Keep in mind that there are 7 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Atlanta and London have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

Boston (BOS) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

Flights via Copenhagen (CPH) offer the lowest average return price of £427.

Flights connecting via Boston (BOS) have the shortest average one-way travel time: 12h 58m.

Boston (BOS) has the shortest average stopover time for this route: 2h 36m.

As of March 2026, 23 flights take off from Atlanta and land in London each day. The most common flight departure time for this route is 22:00, with 83% of daily flights taking off in the evening.

The number of flights available between Atlanta and London is 164 per week as of March 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.