Cheap flights from London Heathrow Airport to Rome from $121

The month of January is, on average, the cheapest month to fly to Rome Fiumicino Airport from London Heathrow Airport, with most prices found around $309. If you’re not able to fly to Rome Fiumicino Airport in January, then November is your next best option. Flight prices from London Heathrow Airport to Rome Fiumicino Airport during November average around $322.

Our data shows that Wednesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $221. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Rome Fiumicino Airport for around $456.

Our most recent data shows that the best time of day to fly to Rome Fiumicino Airport is in the evening. Flights from London Heathrow Airport to Rome Fiumicino Airport during this time can be as low as $161. In contrast, the most expensive time of day to depart to Rome Fiumicino Airport is at midday when prices are around $438.

Fly from London Heathrow to Rome Fiumicino for the best London Heathrow - Rome Fiumicino flight prices

You are more likely to see cheaper flights to Rome Fiumicino Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Rome Fiumicino Airport for around $404 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Rome Fiumicino Airport from London Heathrow Airport for as low as $319 on momondo.

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

Historically, on average around 12% of flights between London and Rome have experienced a delay on any given week. The average delay length over the past 12 months has been 119 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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, British Airways have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

As of June 2026, there are 13 flights per day flying from London Heathrow Airport to Rome Fiumicino Airport. The most common time of day flights depart is 10:00, with 56% of flights taking off at midday.

As of June 2026, there are 94 flights per week flying from London Heathrow Airport to Rome Fiumicino Airport. The most common day of the week flights depart is Thu, with 31% of flights taking off on this day.