Cheap flights from Luxembourg to London from £29

In general, January is the cheapest month to fly from Luxembourg to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £79. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Luxembourg averaging around £89.

On average, the least expensive day to fly to London Heathrow Airport from Luxembourg is on a Thursday. momondo users have found tickets for Thursday departures for as low as £79. 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 £157.

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 Luxembourg to London Heathrow Airport in the evening for as low as £79. 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 £151 on average. Flights to London Heathrow Airport from Luxembourg in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Luxembourg when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £111 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 Luxembourg for as low as £84 on momondo.

There are 2 cabin classes available to choose from on Luxembourg to London Heathrow 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 13% of flights between Luxembourg and London have experienced a delay on any given week. The average delay length over the past 12 months has been 111 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening 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, British Airways have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

As of February 2026, 1 flights take off from Luxembourg and land in London Heathrow Airport each day. The most common flight departure time for this route is 11:00, with 81% of daily flights taking off at midday.

13 flights are operational weekly from Luxembourg to London Heathrow Airport as of February 2026. The most popular departure day for this route is Thu, with 54% of flights per week taking off on this day.