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Cheap flights from Louisville to London from £263

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 departing on 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap return flights

Delta Logo
16:18 - 08:05SDF-LHR
10h 47m1 stop
Delta Logo
09:00 - 21:48LHR-SDF
17h 48m2 stops
£423Delta
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Sun, 28 Sep - Tue, 7 Oct
Delta Logo
09:34 - 11:10SDF-LHR
20h 36m1 stop
Delta Logo
09:00 - 23:59LHR-SDF
18h 59m2 stops
£424Delta
Find Deal
Mon, 20 Oct - Wed, 29 Oct
Delta Logo
16:18 - 08:05SDF-LHR
10h 47m1 stop
Delta Logo
11:45 - 23:59LHR-SDF
17h 14m2 stops
£425Delta
Find Deal
Wed, 1 Oct - Fri, 10 Oct
United Airlines Logo
19:36 - 11:45SDF-LHR
11h 09m1 stop
United Airlines Logo
14:05 - 11:44LHR-SDF
26h 39m2 stops
£469United Airlines
Find Deal
Wed, 20 Aug - Tue, 26 Aug
United Airlines Logo
09:55 - 06:55SDF-LHR
16h 00m1 stop
United Airlines Logo
08:40 - 10:01LHR-SDF
30h 21m2 stops
£473United Airlines
Find Deal
Mon, 22 Sep - Wed, 1 Oct
Air Canada Logo
08:45 - 09:35SDF-LHR
19h 50m2 stops
Air Canada Logo
17:40 - 18:33LHR-SDF
29h 53m2 stops
£473Air Canada
Find Deal
Mon, 29 Sep - Tue, 7 Oct
Iberia Logo
14:42 - 12:15SDF-LHR
16h 33m1 stop
Iberia Logo
18:45 - 23:03LHR-SDF
33h 18m2 stops
£479Iberia
Find Deal
Wed, 3 Sep - Mon, 15 Sep
Iberia Logo
18:12 - 07:20SDF-LHR
32h 08m1 stop
Iberia Logo
11:05 - 23:03LHR-SDF
16h 58m1 stop
£486Iberia
Find Deal
Sat, 27 Sep - Tue, 7 Oct
Logo
09:05 - 06:30SDF-LHR
16h 25m3 stops
Logo
09:30 - 18:33LHR-SDF
14h 03m2 stops
£492
Find Deal
Sun, 21 Sep - Tue, 30 Sep
Air Canada Logo
06:15 - 21:00SDF-LHR
33h 45m2 stops
Air Canada Logo
14:05 - 17:15LHR-SDF
32h 10m2 stops
£507Air Canada
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Thu, 21 Aug - Tue, 26 Aug

Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets
Delta
28 Sept
SDF16:18Louisville Intl
10h 47m
1 stop
LHR08:05London Heathrow
7 Oct
LHR09:00London Heathrow
17h 48m
2 stops
SDF21:48Louisville Intl
£423
Find similar
Delta
20 Oct
SDF09:34Louisville Intl
20h 36m
1 stop
LHR11:10London Heathrow
29 Oct
LHR09:00London Heathrow
18h 59m
2 stops
SDF23:59Louisville Intl
£424
Find similar
Delta
1 Oct
SDF16:18Louisville Intl
10h 47m
1 stop
LHR08:05London Heathrow
10 Oct
LHR11:45London Heathrow
17h 14m
2 stops
SDF23:59Louisville Intl
£425
Find similar

Air Canada flights from Louisville to London Heathrow Airport

Our best Air Canada deals on Louisville to London Heathrow Airport flight tickets
Air Canada
29 Sept
SDF08:45Louisville Intl
19h 50m
2 stops
LHR09:35London Heathrow
7 Oct
LHR17:40London Heathrow
29h 53m
2 stops
SDF18:33Louisville Intl
£473
Find similar
Air Canada
21 Aug
SDF06:15Louisville Intl
33h 45m
2 stops
LHR21:00London Heathrow
26 Aug
LHR14:05London Heathrow
32h 10m
2 stops
SDF17:15Louisville Intl
£507
Find similar
Air Canada
21 Aug
SDF06:15Louisville Intl
33h 45m
2 stops
LHR21:00London Heathrow
26 Aug
LHR12:40London Heathrow
39h 35m
2 stops
SDF23:15Louisville Intl
£523
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Louisville to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 7 August 2025.
Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 28/9

16:18-08:05

1 stop10h 47m

London Heathrow

Tue 7/10

09:00-21:48

2 stops17h 48m

£423

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 20/10

09:34-11:10

1 stop20h 36m

London Heathrow

Wed 29/10

09:00-23:59

2 stops18h 59m

£424

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 1/10

16:18-08:05

1 stop10h 47m

London Heathrow

Fri 10/10

11:45-23:59

2 stops17h 14m

£425

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 20/8

19:36-11:45

1 stop11h 09m

London Heathrow

Tue 26/8

14:05-11:44

2 stops26h 39m

£469

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 22/9

09:55-06:55

1 stop16h 00m

London Heathrow

Wed 1/10

08:40-10:01

2 stops30h 21m

£473

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 29/9

08:45-09:35

2 stops19h 50m

London Heathrow

Tue 7/10

17:40-18:33

2 stops29h 53m

£473

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 3/9

14:42-12:15

1 stop16h 33m

London Heathrow

Mon 15/9

18:45-23:03

2 stops33h 18m

£479

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 27/9

18:12-07:20

1 stop32h 08m

London Heathrow

Tue 7/10

11:05-23:03

1 stop16h 58m

£486

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 21/9

09:05-06:30

3 stops16h 25m

London Heathrow

Tue 30/9

09:30-18:33

2 stops14h 03m

£492

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 21/8

06:15-21:00

2 stops33h 45m

London Heathrow

Tue 26/8

14:05-17:15

2 stops32h 10m

£507

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between Louisville and London Heathrow Airport?

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

In general, February is the cheapest month to fly from Louisville to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £556. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Louisville averaging around £564.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Louisville is on a Sunday. momondo users have found tickets for Sunday departures for as low as £592. 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 £836.

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 at midday. momondo users have found flights departing from Louisville to London Heathrow Airport at midday for as low as £616. 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 £881 on average. Flights to London Heathrow Airport from Louisville in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £734 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 Louisville for as low as £615 on momondo.

When to book flights from Louisville to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

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

Best price found

£263

Fastest flight time

10h 45m

Direct flights

None
The best one-way flight to London Heathrow Airport from Louisville in the past 72 hours is £263. The best return flight deal from Louisville to London Heathrow Airport found on momondo in the last 72 hours is £423.
The fastest flight from Louisville to London Heathrow Airport takes 10h 45m
There are no direct flights from Louisville to London Heathrow Airport. Popular non-direct route for this connection is Louisville Intl Airport - London Heathrow Airport.
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  • How far is Louisville Intl to London Heathrow by plane?

    Louisville Intl and London Heathrow are 4030.3 mi apart from one another. In terms of flight time, this usually takes a little over 10h 45m.

  • 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?

  • How old do you have to be to fly from Louisville Intl Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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?

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
Virgin AtlanticPriceFrom £541Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom £559Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Slough
Northampton
Maidstone
Southend-on-Sea
Swindon
Canterbury
Gatwick
Stratford-upon-Avon
Ipswich
Ilford
Guildford
Colchester
Dartford
Swanage
Hounslow
Worthing
Dover

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Louisville.

Can I find flights from Louisville to London with flexible booking policies on momondo?

Yes. All flights to London from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are not ready to book a flight from Louisville to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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