Cheap flights from Atlanta to London from £252

In general, February is the cheapest month to fly from Atlanta to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £523. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Atlanta averaging around £542.

On average, the least expensive day to fly to London Heathrow Airport from Atlanta is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £531. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £790.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Atlanta to London Heathrow Airport in the afternoon for as low as £665. 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 evening when prices are £697 on average. Flights to London Heathrow Airport from Atlanta in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £647 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 Atlanta for as low as £579 on momondo.

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

As of April 2026, prices for Atlanta to London Heathrow Airport flights are approximately 17% cheaper when compared to flights at the same time last year.

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

Virgin Atlantic, KLM and British Airways are the top three most popular airlines that fly to London Heathrow Airport from Atlanta according to our data. Virgin Atlantic is the first choice among our users, with 64% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 7 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 15% 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 135 minutes.

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

Tuesday 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.

As of April 2026, 17 flights take off from Atlanta and land in London Heathrow Airport each day. The most common flight departure time for this route is 22:00, with 79% of daily flights taking off in the evening.

As of April 2026, 123 flights take off from Atlanta and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.