Cheap flights from Louisville to London Heathrow Airport from $419
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to London Heathrow Airport departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Louisville to London
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Delta flights from Louisville to London Heathrow Airport
Our best Delta deals on Louisville to London Heathrow Airport flight tickets
British Airways flights from Louisville to London Heathrow Airport
Our best British Airways deals on Louisville to London Heathrow Airport flight tickets
See travel insights to London from
How to get the cheapest flight ticket from Louisville to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Heathrow Airport?
The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Louisville, with most prices found around $741. If you’re not able to fly to London Heathrow Airport in February, then April is your next best option. Flight prices from Louisville to London Heathrow Airport during April average around $777.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $803. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,071.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
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 Louisville to London Heathrow Airport in the evening for as low as $882. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,038.
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Louisville when booking 23 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $951 when searching 23 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Louisville for as low as $802 on momondo.
What is the cheapest airline that flies from Louisville Intl to London Heathrow?
Aer Lingus, Iberia, and Delta are the most popular carriers operating from Louisville Intl to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, American Airlines and Iberia are the top three most popular airlines that fly to London Heathrow Airport from Louisville according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 8 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
When to book flights from Louisville to London Heathrow Airport
Cheap Louisville to London Heathrow Airport (SDF to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Louisville to London Heathrow Airport
How far is Louisville Intl to London Heathrow by plane?
A flight from Louisville Intl to London Heathrow will travel around 4030.3 mi. By plane, this route typically takes 10h 18m.
When did momondo last update prices for flights from Louisville Intl Airport to London Heathrow Airport?
Prices for flights from Louisville Intl Airport to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to London Heathrow Airport?
As of April 2025, there are 5 operators available to choose from for flights from Louisville Intl Airport to London Heathrow Airport.
How old do you have to be to fly from Louisville Intl Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Louisville to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Louisville to London Heathrow Airport is American Airlines, representing 52% of all bookings. The subsequent popular airlines are Delta at 15%, British Airways at 14%, and United Airlines at 10%.
Best airlines flying from Louisville to London Heathrow Airport
Compare and see reviews for airlines that fly from Louisville to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $675 | Free Cancellation | Rating 6.6 6,718 reviews | |||
| PriceFrom $696 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $728 | Free Cancellation | Rating 8.0 7,897 reviews | |||
| PriceFrom $734 | Free Cancellation | Rating 7.4 8,619 reviews | |||
| PriceFrom $776 | Free Cancellation | Rating 7.4 637 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Louisville to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to London for you.
Can I find flights from Louisville to London with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Louisville to London flights to just show those with flexible booking policies.
How can momondo help me find flights from Louisville to London?
Once you have performed a search for Louisville to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Louisville to London right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Louisville to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.