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Cheap flights from Harrisburg to London from £249

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — LON
25 May — 1 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Harrisburg to London

Enter your travel dates to find the best prices.

Cheapest flights from Harrisburg to London
Explore the most affordable flight options available from Harrisburg to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Fri 24/406:00
MDT
-
LHR
1 stop20h 15m
Delta
Thu 7/513:25
LHR
-
MDT
1 stop15h 26m
Delta
Deal found 23/4£537
Tue 5/516:19
MDT
-
LHR
1 stop9h 51m
Delta
Tue 12/506:30
LHR
-
MDT
2 stops21h 20m
Delta
Deal found 20/4£540
Tue 18/812:30
MDT
-
LHR
1 stop13h 40m
Multiple Airlines
Wed 2/906:15
LHR
-
MDT
2 stops14h 53m
Multiple Airlines
Deal found 20/4£541
Tue 5/506:00
MDT
-
LHR
2 stops19h 25m
Delta
Wed 20/511:30
LHR
-
MDT
2 stops17h 21m
Delta
Deal found 20/4£544
Wed 19/812:30
MDT
-
LHR
2 stops17h 10m
Delta
Mon 24/811:30
LHR
-
MDT
2 stops16h 14m
Delta
Deal found 20/4£545
Tue 5/506:00
MDT
-
LHR
1 stop19h 25m
KLM
Tue 12/509:20
LHR
-
MDT
1 stop19h 31m
KLM
Deal found 20/4£545
Mon 5/1012:30
MDT
-
LHR
2 stops15h 45m
Delta
Thu 15/1015:15
LHR
-
MDT
1 stop13h 23m
Delta
Deal found 21/4£548
Thu 20/814:56
MDT
-
LHR
2 stops17h 09m
Delta
Mon 24/815:15
LHR
-
MDT
1 stop13h 25m
Delta
Deal found 20/4£549
Tue 5/512:00
MDT
-
LGW
2 stops23h 00m
Delta
Wed 20/510:25
LGW
-
MDT
2 stops18h 26m
Delta
Deal found 23/4£554
Tue 5/518:19
MDT
-
LGW
2 stops16h 41m
Delta
Thu 14/510:25
LGW
-
MDT
2 stops18h 26m
Delta
Deal found 20/4£555
Fri 24/412:00
MDT
-
LHR
1 stop13h 25m
Delta
Mon 27/408:40
LHR
-
MDT
2 stops20h 19m
Delta
Deal found 21/4£565
Fri 24/406:00
MDT
-
LHR
1 stop19h 25m
Multiple Airlines
Mon 27/412:25
LHR
-
MDT
2 stops15h 38m
Multiple Airlines
Deal found 23/4£573

Find flight deals from Harrisburg to London

Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 April 2026.

Round-trip from

£540

One-way from

£249

Popular in

July

Cheapest in

January

Average price

£548
Delta
  • Delta
  • 5/5-12/5
  • 3 total stops
  • 31h 11m total
  • Harrisburg to London
Search Deals
KLM
  • KLM
  • 23/7
  • 1 total stop
  • 13h 48m total
  • Harrisburg to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Harrisburg to London 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, Cheapflights users made 858,174 searches. Data last updated 25 April 2026.
Use the filters below to find and compare flights from Harrisburg to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 8/9

12:25-13:15

1 stop19h 50m

London Heathrow

Wed 23/9

08:40-23:40

2 stops20h 00m

£540
Fastest return journey

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 5/5

12:00-06:25

1 stop13h 25m

London Heathrow

Tue 12/5

06:15-16:17

2 stops15h 02m

£540

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 5/5

18:19-13:15

1 stop13h 56m

London Heathrow

Wed 20/5

06:15-22:50

2 stops21h 35m

£540

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 18/8

12:25-07:10

2 stops13h 45m

London Heathrow

Wed 2/9

11:30-23:40

2 stops17h 10m

£544

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 5/5

12:00-11:20

1 stop18h 20m

London Heathrow

Tue 12/5

10:45-22:50

1 stop17h 05m

£545

HarrisburgLondon

MDT - LHR

MDTLHR

Harrisburg

Tue 8/9

12:30-07:10

1 stop13h 40m

London Heathrow

Wed 23/9

11:15-23:40

1 stop17h 25m

£545

HarrisburgLondon

MDT - LGW

MDTLGW

Harrisburg

Fri 31/7

12:22-16:00

2 stops22h 38m

London Gatwick

Fri 28/8

10:25-23:40

2 stops18h 15m

£555

HarrisburgLondon

MDT - LGW

MDTLGW

Harrisburg

Thu 20/8

12:25-09:25

2 stops16h 00m

London Gatwick

Tue 25/8

10:35-22:44

2 stops17h 09m

£591

HarrisburgLondon

MDT - LGW

MDTLGW

Harrisburg

Thu 20/8

12:25-09:25

2 stops16h 00m

London Gatwick

Mon 24/8

10:25-22:44

2 stops17h 19m

£591

HarrisburgLondon

MDT - LGW

MDTLGW

Harrisburg

Tue 8/9

17:00-16:00

2 stops18h 00m

London Gatwick

Wed 23/9

10:25-22:44

2 stops17h 19m

£627

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Showing 1-10 of 33 resultsSorted by cheapest first
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Best time to book a flight from Harrisburg to London

Have a flexible travel schedule? Discover the best time to fly to London from Harrisburg with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Harrisburg to London

What is the cheapest month to book a flight from Harrisburg to London?

Currently, January is the cheapest month in which you can book a flight from Harrisburg to London (average of £388). Flying from Harrisburg to London in February is currently the most expensive (average of £599). 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.

How much does it cost for a return flight from Harrisburg to London?

Related info for your journey

Find useful and relevant information for your journey from Harrisburg to London. 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 Harrisburg to London?

    Most people fly from Harrisburg (MDT) if they book a flight from Harrisburg to London. On average, Harrisburg has 0 outbound flights to London per day from 0 airlines. Harrisburg is conveniently located just 8.5 mi from Harrisburg’s city center.

  • How long is the flight from Harrisburg to London?

    For as low as £708, Delta can have you in London from Harrisburg in 17h 07m. The distance from Harrisburg to London is about 3601 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Harrisburg to London?

    The most popular flight routes from Harrisburg to London are Harrisburg - London Heathrow, Harrisburg - London Gatwick and Harrisburg - London City.

  • Can I find deals for flights from Harrisburg to London that include hotel bookings?

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

  • How can I find direct flights from Harrisburg to London?

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

  • Can I find deals for business class flights from Harrisburg to London?

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

  • What is the cheapest month to book a flight from Harrisburg to London?

    Currently, January is the cheapest month in which you can book a flight from Harrisburg to London (average of £388). Flying from Harrisburg to London in February is currently the most expensive (average of £599). 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.

See more FAQs

Travelling to a place near London?

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Gatwick
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Kingston upon Thames
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Ipswich
Southend-on-Sea
Guildford
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Chelmsford

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Why should you use Cheapflights to find cheap flight tickets from Harrisburg to London?

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Can Cheapflights find flights from Harrisburg to London with no change fees?

Yes! Cheapflights helps users easily find flights from Harrisburg to London with no change fees.

Can Cheapflights notify me if prices for flights from Harrisburg to London become cheaper?

Of course! You can now track prices for flights from Harrisburg to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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