Cheap flights from Shannon, Clare to London from £37

In general, January is the cheapest month to fly from Shannon, Clare to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £114. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from Shannon, Clare averaging around £119.

On average, the least expensive day to fly to London Heathrow Airport from Shannon, Clare is on a Thursday. momondo users have found tickets for Thursday departures for as low as £97. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £757.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Shannon, Clare to London Heathrow Airport in the evening for as low as £141. 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 morning when prices are £265 on average. Flights to London Heathrow Airport from Shannon, Clare in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Shannon to London Heathrow for the best Shannon - London Heathrow flight prices

There are 2 cabin classes available to choose from on Shannon to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of March 2026, prices for Shannon, Clare to London Heathrow Airport flights are approximately 44% more expensive when compared to flights at the same time last year.

Historically, on average around 15% of flights between Shannon and London have experienced a delay on any given week. The average delay length over the past 12 months has been 93 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. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

As of March 2026, 11 flights take off from Shannon, Clare and land in London Heathrow Airport each day. The most common flight departure time for this route is 07:00, with 43% of daily flights taking off at midday.

As of March 2026, there are 81 flights per week flying from Shannon, Clare to London Heathrow Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.