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Cheap flights from Killeen to London Heathrow Airport from £673

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
GRK — LHR
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Killeen to Heathrow

Enter your travel dates to find the best prices.

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 25 March 2026.

Wed 14/1007:00
GRK
-
LHR
1 stop21h 55m
Multiple Airlines
Mon 26/1015:00
LHR
-
GRK
1 stop13h 39m
Multiple Airlines
Deal found 21/3£673
Tue 24/1110:34
GRK
-
LHR
1 stop15h 41m
American Airlines
Mon 30/1115:00
LHR
-
GRK
1 stop14h 43m
American Airlines
Deal found 23/3£711
Tue 24/1110:38
GRK
-
LHR
1 stop19h 37m
Multiple Airlines
Mon 30/1115:00
LHR
-
GRK
1 stop25h 04m
Multiple Airlines
Deal found 24/3£716
Mon 23/1118:49
GRK
-
LHR
1 stop11h 26m
Multiple Airlines
Sun 29/1115:00
LHR
-
GRK
1 stop14h 43m
Multiple Airlines
Deal found 22/3£734
Tue 31/312:01
GRK
-
LHR
1 stop16h 54m
Multiple Airlines
Tue 5/512:55
LHR
-
GRK
1 stop12h 59m
Multiple Airlines
Deal found 22/3£749
Mon 23/1111:52
GRK
-
LHR
1 stop12h 58m
American Airlines
Sun 29/1115:00
LHR
-
GRK
1 stop14h 43m
American Airlines
Deal found 24/3£771
Mon 13/410:05
GRK
-
LHR
1 stop18h 50m
Multiple Airlines
Mon 20/412:55
LHR
-
GRK
1 stop14h 57m
Multiple Airlines
Deal found 24/3£787
Fri 3/415:59
GRK
-
LHR
1 stop16h 26m
American Airlines
Mon 6/412:55
LHR
-
GRK
1 stop15h 08m
American Airlines
Deal found 20/3£824
Mon 13/415:54
GRK
-
LHR
1 stop13h 01m
British Airways
Mon 20/420:45
LHR
-
GRK
2 stops27h 54m
British Airways
Deal found 24/3£890
Fri 4/915:06
GRK
-
LHR
1 stop13h 49m
Multiple Airlines
Mon 7/912:55
LHR
-
GRK
1 stop14h 14m
Multiple Airlines
Deal found 23/3£943

Find 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 25 March 2026.

Round-trip from

£787
13/4-20/4
  • 13/4-20/4
  • 2 total stops
  • 33h 47m total
  • Killeen to London
Search Deals

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 25 March 2026.
Use the filters below to find and compare flights from Killeen to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Mon 13/4

10:05-10:55

1 stop18h 50m

London Heathrow

Mon 20/4

12:55-21:52

1 stop14h 57m

£787

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Mon 13/4

15:54-10:55

1 stop13h 01m

London Heathrow

Mon 20/4

20:45-18:39

2 stops27h 54m

£890

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Fri 4/9

07:00-10:55

1 stop21h 55m

London Heathrow

Mon 7/9

12:55-23:39

1 stop16h 44m

£943

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Tue 23/6

15:07-12:25

2 stops15h 18m

London Heathrow

Tue 14/7

12:55-22:44

1 stop15h 49m

£1,130

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Sat 6/6

06:44-10:55

1 stop22h 11m

London Heathrow

Thu 16/7

12:55-22:44

1 stop15h 49m

£1,241

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Tue 7/4

19:09-14:25

1 stop13h 16m

London Heathrow

Sat 25/4

08:55-18:39

1 stop15h 44m

£4,521

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Mon 6/4

18:33-14:25

1 stop13h 52m

London Heathrow

Sat 25/4

08:55-18:39

1 stop15h 44m

£4,521

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Mon 6/4

18:33-14:25

1 stop13h 52m

London Heathrow

Fri 24/4

16:25-23:46

1 stop13h 21m

£4,521
Fastest return journey

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Thu 9/4

19:09-14:25

1 stop13h 16m

London Heathrow

Thu 23/4

16:25-23:46

1 stop13h 21m

£5,327

KilleenLondon

GRK - LHR

GRKLHR

Killeen Fort Hood Regional

Wed 8/4

13:08-14:25

1 stop19h 17m

London Heathrow

Fri 24/4

14:25-21:52

1 stop13h 27m

£5,327

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Sorted by cheapest first

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, September is the cheapest month in which you can book a flight from Killeen to London Heathrow Airport (average of £423). Flying from Killeen to London Heathrow Airport in June is currently the most expensive (average of £616). 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 £890, British Airways can have you in London Heathrow Airport from Killeen in 13h 01m. 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, September is the cheapest month in which you can book a flight from Killeen to London Heathrow Airport (average of £423). Flying from Killeen to London Heathrow Airport in June is currently the most expensive (average of £616). 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
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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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?

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