Cheap flights from Atlanta to London from £247

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 £558. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Atlanta averaging around £610.

On average, the least expensive day to fly to London Heathrow Airport from Atlanta is on a Monday. momondo users have found tickets for Monday departures for as low as £709. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £853.

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 £790. 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 £792 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 £785 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 £704 on momondo.

There are 3 cabin classes available to choose from on Atlanta 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 30% on your flight if you consider stops on a Atlanta to London Heathrow Airport flight.

As of October 2026, prices for Atlanta to London Heathrow Airport flights are approximately 18% cheaper when compared to flights at the same time last year.

United Airlines, JetBlue, and British Airways 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 56% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 6 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 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 departing in the morning have, in the past, seen delays more frequently in comparison.

Monday 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 October 2026, 22 flights take off from Atlanta and land in London Heathrow Airport each day. The most common flight departure time for this route is 23:00, with 96% of daily flights taking off in the evening.

As of October 2026, 156 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 18% of weekly flights taking off on this day.