Cheap flights from Phoenix Sky Harbor Intl Airport to London from £171

In general, January is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £663. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from Phoenix Sky Harbor Intl Airport averaging around £718.

On average, the least expensive day to fly to London Heathrow Airport from Phoenix Sky Harbor Intl Airport is on a Monday. momondo users have found tickets for Monday departures for as low as £703. 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 £954.

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 Phoenix Sky Harbor Intl Airport to London Heathrow Airport in the afternoon for as low as £716. 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 £840 on average. Flights to London Heathrow Airport from Phoenix Sky Harbor Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Phoenix Sky Harbor Intl to London Heathrow for the best Phoenix Sky Harbor Intl - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £846 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 Phoenix Sky Harbor Intl Airport for as low as £815 on momondo.

There are 2 cabin classes available to choose from on Phoenix Sky Harbor Intl Airport 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 19% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to London Heathrow Airport flight.

As of November 2026, prices for Phoenix Sky Harbor Intl Airport to London Heathrow Airport flights are approximately 27% cheaper when compared to flights at the same time last year.

As of November 2026, there are 5 flights per day flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport. The most common time of day flights depart is 20:00, with 100% of flights taking off in the evening.

The number of flights available between Phoenix Sky Harbor Intl Airport and London Heathrow Airport is 35 per week as of November 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.