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$1,475+ Cheap flights from Killeen (GRK) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
GRK — LIS
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Find flight deals from Killeen to Portugal

Cheapest flights from Killeen to Portugal
Explore the most affordable flight options available from Killeen to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:15 pmGRK - LIS
2 stops37h 35mAmerican Airlines
Wed 12/108:45 pmLIS - GRK
2 stops19h 16mAmerican Airlines
Deal found 11/1$1,475
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:52 amGRK - LIS
2 stops20h 53mMultiple Airlines
Sat 11/224:45 pmLIS - GRK
2 stops24h 35mMultiple Airlines
Deal found 11/2$1,503

Cheap flight deals from Killeen to Portugal

Keep the following information in mind while searching for Killeen to Portugal flight deals. Data was last updated November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,475
(American Airlines)
Provider with most accurate pricing for Killeen Fort Hood Regional-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Killeen Fort Hood Regional-Lisbon Humberto Delgado flights.
Search Deals
From Killeen Fort Hood Regional to Portugal
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Killeen to Portugal 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 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Killeen to Portugal that are best for you.

Fly from

Killeen

Fly to

Portugal

Route

Depart

Return

Price

KilleenLisbon

GRK - LIS

GRKLIS

Killeen Fort Hood Regional

Sat 12/6

7:15 pm-2:50 pm

2 stops37h 35m

Lisbon Humberto Delgado

Wed 12/10

8:45 pm-10:01 am

2 stops19h 16m

$1,475

KilleenLisbon

GRK - LIS

GRKLIS

Killeen Fort Hood Regional

Tue 11/18

11:52 am-2:45 pm

2 stops20h 53m

Lisbon Humberto Delgado

Sat 11/22

4:45 pm-11:20 am

2 stops24h 35m

$1,503

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Best time to book a flight from Killeen to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Killeen with our price prediction graph.
Estimated round-trip 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 Portugal

What is the cheapest month to book a flight from Killeen to Portugal?

Currently, February is the cheapest month in which you can book a flight from Killeen to Portugal (average of $499). Flying from Killeen to Portugal in June is currently the most expensive (average of $787). 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 Portugal. 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 Portugal?

    Located just 6.9 mi from the city center, Killeen Fort Hood Regional (GRK) is the airport most travelers will use when flying to Portugal from Killeen.

  • How long is the flight from Killeen to Portugal?

    A quick flight from Killeen to Portugal can take about 37h 35m. American Airlines provides one of the quickest options available for as low as $1,475. The distance from Killeen to Portugal is about 4848 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Killeen to Portugal 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 Portugal?

    Currently, February is the cheapest month in which you can book a flight from Killeen to Portugal (average of $499). Flying from Killeen to Portugal in June is currently the most expensive (average of $787). 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.

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