Cheap flights from Phoenix to London from £172

The cheapest month to fly to London from Phoenix is in October. Flight prices, which tend to average around £507, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Phoenix averaging around £531.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £625. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix to London for around £1,028.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £736. Flights in the afternoon are often more expensive, with an average ticket price of £738.

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

You are more likely to see cheaper flights to London from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £690 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 Phoenix for as low as £607 on momondo.

There are 3 cabin classes available to choose from on Phoenix to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

5 flights are operational daily from Phoenix to London as of March 2026. The most popular departure time for this route is 20:00, with 100% of flights per day taking off in the evening.

As of March 2026, 35 flights take off from Phoenix and land in London each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.