Cheap flights from Atlanta to London from $327

The cheapest month to fly to London from Atlanta is in February. Flight prices, which tend to average around $798, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Atlanta averaging around $836.

The cheapest day to depart from Atlanta to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $1,001. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,138. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Atlanta in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,032 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $1,148. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,050 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Atlanta for as low as $938 on momondo.

There are 4 cabin classes available to choose from on Atlanta 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 16% on your flight if you consider stops on a Atlanta to London flight.

As of November 2026, prices for Atlanta to London flights are approximately 29% cheaper when compared to flights at the same time last year.

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

Delta, Virgin Atlantic and British Airways are the top three most popular airlines that fly to London from Atlanta 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 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% 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 128 minutes.

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

Monday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

Copenhagen (CPH) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Flights via Boston (BOS) offer the lowest average round-trip price of $773.

Flights connecting via Boston (BOS) have the shortest average one-way travel time: 10h 40m.

New York (JFK) has the shortest average layover time for this route: 2h 03m.

The number of flights available between Atlanta and London is 27 per day as of November 2026. The most frequent departure time is 11:00PM, with 100% of daily flights leaving in the evening.

The number of flights available between Atlanta and London is 189 per week as of November 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.