Question 1

What are the cheapest airlines flying from Louisville to London Heathrow Airport round-trip?

Accepted Answer

Cheapflights users have booked flights from Louisville to London Heathrow Airport round-trip from £423. Other airlines that can offer you cheap pricing are KLM, from £430, and Virgin Atlantic, from £433. You may be able to fly from Louisville to London Heathrow Airport for 41% less than the average price by searching for these airlines.

Question 2

What are the cheapest airlines to fly from Louisville to London Heathrow Airport one-way?

Accepted Answer

To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at £306. British Airways flights start at £356 while deals on Delta start at £366 one-way.

Question 3

How far ahead should I book a flight from Louisville to London Heathrow Airport?

Accepted Answer

The best time to book flights from Louisville to London Heathrow Airport is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 4

What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £112). Flying from Louisville to London Heathrow Airport in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

What is the cheapest day to fly from Louisville to London Heathrow Airport?

Accepted Answer

Travellers seeking maximum savings on their Louisville to London Heathrow Airport flight should consider departing on Sunday at midday when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

E

Accepted Answer

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Question 7

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 8

What is the cheapest day to fly round-trip from Louisville to London Heathrow Airport?

Accepted Answer

Flying to your destination on a Tuesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to London Heathrow Airport. Check prices with Cheapflights to find a great deal for your trip.

Question 9

How far in advance should I book a flight from Louisville to London Heathrow Airport?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 14 days in advance, which can save you up to 69% on flights from Louisville to London Heathrow Airport compared to booking the week you need them. Waiting 14 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £471. For sooner than that we have options available in the next 3 days from £1,076.

Question 10

What is the cheapest month to fly from Louisville to London Heathrow Airport?

Accepted Answer

Flights from Louisville to London Heathrow Airport lean towards being more expensive in June. Prices are generally better when you fly from Louisville to London Heathrow Airport in August, with the cheapest ticket starting at £522.

Question 11

What is the cheapest time of day to fly from SDF to LHR?

Accepted Answer

It’s typically best to fly out from Louisville to London Heathrow Airport at midday. Doing so could potentially save you 30% on the flight price compared to flying in the morning, which is usually more expensive.

Question 12

What airport do you fly from for flights from Louisville to London Heathrow?

Accepted Answer

Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly out of when you book flights from Louisville to London Heathrow. 2 airlines have flights from Louisville Intl to London Heathrow on a regular basis. Booking flights from Louisville Intl to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

Question 13

Can I find deals for flights from Louisville to Heathrow that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Louisville to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 14

How can I find direct flights from Louisville to Heathrow?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Heathrow.

Question 15

Can I find deals for business class flights from Louisville to Heathrow?

Accepted Answer

Yes. Cheapflights offers flight deals from Louisville to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 16

How does Cheapflights help users find flights from Louisville to Heathrow?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Louisville to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 17

Why should you use Cheapflights to find cheap flight tickets from Louisville to Heathrow?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Louisville.

Question 18

Can Cheapflights find flights from Louisville to Heathrow with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Louisville to Heathrow, users can toggle the no change fees filter when performing a flight search.

Question 19

Can Cheapflights notify me if prices for flights from Louisville to Heathrow become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Louisville to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£423
One-way from	£250
Popular in	June
Cheapest in	February
Average price	£886

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£538	Average£805	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
American Airlines	Cheapest£555	Average£837	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Louisville to London Heathrow Airport from £250

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or September, booked 64 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

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Find flight deals from Louisville to Heathrow

Cheapest flights from Louisville to HeathrowExplore the most affordable flight options available from Louisville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 July 2025.

Explore the most affordable flight options available from Louisville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Best time to book a flight from Louisville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Louisville with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Louisville to London Heathrow Airport

How far ahead should I book a flight from Louisville to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Louisville to Heathrow. Price data was last updated on 11 July 2025.

What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

What is the cheapest time of day to fly from SDF to LHR?

Find hourly flight availability from Louisville to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 July 2025.

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown with Delta, KLM, andUnited Airlines from Louisville to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Louisville to London Heathrow?

What are the cheapest airlines flying from Louisville to London Heathrow Airport round-trip?

What are the cheapest airlines to fly from Louisville to London Heathrow Airport one-way?

Can I find deals for flights from Louisville to Heathrow that include hotel bookings?

How can I find direct flights from Louisville to Heathrow?

Can I find deals for business class flights from Louisville to Heathrow?

What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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Alternative routes for Louisville to Heathrow

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Top 2 airlines flying from Louisville to Heathrow

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How does Cheapflights help users find flights from Louisville to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Louisville to Heathrow?

Can Cheapflights find flights from Louisville to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Louisville to Heathrow become cheaper?

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Cheapest flights from Louisville to Heathrow
Explore the most affordable flight options available from Louisville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 July 2025.