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Cheap flights from Killeen to London Heathrow Airport from £397

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRK — LHR
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Killeen to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Killeen (GRK) to Heathrow (LHR). 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 16 September 2025.

Round-trip from

£531

One-way from

£397
American Airlines
  • American Airlines
  • 27/11-9/12
  • 2 total stops
  • 29h 18m total
  • Killeen to London
Search Deals
American Airlines
  • American Airlines
  • 21/9
  • 2 total stops
  • 13h 58m total
  • Killeen to London
Search Deals

Find flight deals from Killeen to Heathrow

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

Thu 27/1110:34GRK - LHR
1 stop16h 01mAmerican Airlines
Tue 9/1208:20LHR - GRK
1 stop13h 17mAmerican Airlines
Deal found 15/9£531
Wed 12/1116:10GRK - LHR
1 stop32h 40mAmerican Airlines
Sun 16/1108:25LHR - GRK
2 stops18h 42mAmerican Airlines
Deal found 13/9£651
Tue 2/1211:52GRK - LHR
1 stop16h 08mAmerican Airlines
Thu 1/108:20LHR - GRK
1 stop15h 36mAmerican Airlines
Deal found 14/9£726
Mon 1/1218:50GRK - LHR
1 stop10h 50mAmerican Airlines
Fri 2/110:05LHR - GRK
1 stop13h 51mAmerican Airlines
Deal found 14/9£1,195

Cheapflights Fare Finder

 
Customise your flight search to find flights from Killeen to Heathrow 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 16 September 2025.
Use the filters below to find and compare flights from Killeen to London Heathrow Airport that are best for you.

Fly from

Killeen

Fly to

Heathrow

Route

Depart

Return

Price

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Thu 27/11

10:34-06:15

2 stops13h 41m

London Heathrow

Tue 9/12

08:20-15:37

1 stop13h 17m

£534

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Wed 12/11

16:10-06:50

1 stop32h 40m

London Heathrow

Sun 16/11

08:25-21:07

2 stops18h 42m

£651

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Tue 2/12

11:52-10:00

1 stop16h 08m

London Heathrow

Thu 1/1

08:20-17:56

1 stop15h 36m

£726

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Sun 21/9

16:32-12:30

2 stops13h 58m

£397

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Tue 3/2

10:21-09:30

2 stops17h 09m

£397

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Wed 4/2

06:24-06:50

2 stops18h 26m

£397

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Sat 20/9

16:40-18:55

2 stops20h 15m

£483

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Best time to book a flight from Killeen to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Killeen 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 Killeen to London Heathrow Airport

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

Currently, January is the cheapest month in which you can book a flight from Killeen to London Heathrow Airport (average of £112). Flying from Killeen 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.

Related info for your journey

Find useful and relevant information for your journey from Killeen 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 Killeen to London Heathrow?

    For a flight from Killeen to London Heathrow, you will be flying from Fort Hood Regional. Killeen Fort Hood Regional (GRK) is just 6.9 mi from the center of the city. Fort Hood Regional is the only Killeen airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Killeen Fort Hood Regional on a regular basis.

  • How long is the flight from Killeen to London Heathrow Airport?

    For as low as £534, American Airlines can have you in London Heathrow Airport from Killeen in 13h 41m. There are 4862 mi between Killeen and London Heathrow Airport.

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

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

  • How can I find direct flights from Killeen to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Killeen 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.

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

    Currently, January is the cheapest month in which you can book a flight from Killeen to London Heathrow Airport (average of £112). Flying from Killeen 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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

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

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

Need flexible booking options for your flight to Heathrow from Killeen? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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