$558+ Cheap flights from Killeen to Philadelphia (GRK - PHL)
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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
GRK — PHL
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Killeen to Philadelphia
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Best
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Cheapest flights from Killeen to PhiladelphiaExplore the most affordable flight options available from Killeen to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from Killeen to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Wed 4/225:00 am
GRK
- PHL
1 stop5h 56m
American Airlines
Mon 4/276:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/7![American Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/173:54 pm
GRK
- PHL
1 stop7h 17m
American Airlines
Sun 4/266:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/10![American Airlines logo]()
$595
This American Airlines deal was found by Cheapflights users on 3/6. 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.
Fri 5/223:07 pm
GRK
- PHL
1 stop6h 46m
American Airlines
Mon 5/259:08 am
PHL
- GRK
1 stop6h 29m
American Airlines
Deal found 3/6![American Airlines logo]()
$615
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 5/213:07 pm
GRK
- PHL
1 stop6h 46m
American Airlines
Mon 5/255:30 pm
PHL
- GRK
1 stop7h 08m
American Airlines
Deal found 3/10![American Airlines logo]()
$635
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1012:01 pm
GRK
- PHL
1 stop6h 24m
American Airlines
Sat 3/143:54 pm
PHL
- GRK
1 stop7h 09m
American Airlines
Deal found 3/10![American Airlines logo]()
$725
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1012:01 pm
GRK
- PHL
1 stop6h 24m
American Airlines
Wed 3/1810:35 am
PHL
- GRK
2 stops12h 28m
American Airlines
Deal found 3/10![American Airlines logo]()
$730
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1010:15 am
GRK
- PHL
1 stop5h 40m
American Airlines
Thu 3/1912:55 pm
PHL
- GRK
1 stop6h 08m
American Airlines
Deal found 3/10![American Airlines logo]()
$763
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 3/1310:15 am
GRK
- PHL
1 stop5h 40m
American Airlines
Sat 3/142:48 pm
PHL
- GRK
2 stops8h 15m
American Airlines
Deal found 3/10![American Airlines logo]()
$768
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 6/43:07 pm
GRK
- PHL
1 stop5h 53m
American Airlines
Sun 6/75:00 am
PHL
- GRK
1 stop5h 34m
American Airlines
Deal found 3/9![American Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1410:15 am
GRK
- PHL
1 stop8h 10m
American Airlines
Sun 3/228:30 am
PHL
- GRK
1 stop7h 59m
American Airlines
Deal found 3/10![American Airlines logo]()
$780
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 3/126:33 pm
GRK
- PHL
1 stop5h 21m
American Airlines
Sun 3/1512:19 pm
PHL
- GRK
1 stop6h 44m
American Airlines
Deal found 3/10![American Airlines logo]()
$801
Best flights from Killeen to PhiladelphiaDiscover carefully curated flight deals from Killeen to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from Killeen to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Wed 4/225:00 am
GRK
- PHL
1 stop5h 56m
American Airlines
Mon 4/276:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/7![American Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/173:54 pm
GRK
- PHL
1 stop7h 17m
American Airlines
Sun 4/266:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/10![American Airlines logo]()
$595
This American Airlines deal was found by Cheapflights users on 3/6. 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.
Fri 5/223:07 pm
GRK
- PHL
1 stop6h 46m
American Airlines
Mon 5/259:08 am
PHL
- GRK
1 stop6h 29m
American Airlines
Deal found 3/6![American Airlines logo]()
$615
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 5/213:07 pm
GRK
- PHL
1 stop6h 46m
American Airlines
Mon 5/255:30 pm
PHL
- GRK
1 stop7h 08m
American Airlines
Deal found 3/10![American Airlines logo]()
$635
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 6/43:07 pm
GRK
- PHL
1 stop5h 53m
American Airlines
Sun 6/75:00 am
PHL
- GRK
1 stop5h 34m
American Airlines
Deal found 3/9![American Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Fri 6/196:44 am
GRK
- PHL
2 stops7h 07m
American Airlines
Mon 6/229:08 am
PHL
- GRK
1 stop6h 29m
American Airlines
Deal found 3/7![American Airlines logo]()
$848
Last-minute flights from Killeen to PhiladelphiaDiscover last-minute flight deals from Killeen to Philadelphia. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Killeen to Philadelphia. Data last updated March 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1012:01 pm
GRK
- PHL
1 stop6h 24m
American Airlines
Sat 3/143:54 pm
PHL
- GRK
1 stop7h 09m
American Airlines
Deal found 3/10![American Airlines logo]()
$725
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/107:00 am
GRK
- PHL
2 stops9h 09m
American Airlines
Wed 3/188:31 am
PHL
- GRK
2 stops10h 32m
American Airlines
Deal found 3/10![American Airlines logo]()
$735
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1010:15 am
GRK
- PHL
1 stop5h 40m
American Airlines
Thu 3/1912:55 pm
PHL
- GRK
1 stop6h 08m
American Airlines
Deal found 3/10![American Airlines logo]()
$763
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 3/126:33 pm
GRK
- PHL
1 stop5h 21m
American Airlines
Sun 3/1512:19 pm
PHL
- GRK
1 stop6h 44m
American Airlines
Deal found 3/10![American Airlines logo]()
$801
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 3/1310:15 am
GRK
- PHL
1 stop5h 40m
American Airlines
Sat 3/142:48 pm
PHL
- GRK
2 stops8h 15m
American Airlines
Deal found 3/10![American Airlines logo]()
$768
This American Airlines deal was found by Cheapflights users on 3/10. 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 3/1410:15 am
GRK
- PHL
1 stop8h 10m
American Airlines
Sun 3/228:30 am
PHL
- GRK
1 stop7h 59m
American Airlines
Deal found 3/10![American Airlines logo]()
$780
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/173:54 pm
GRK
- PHL
1 stop7h 17m
American Airlines
Sun 4/266:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/10![American Airlines logo]()
$595
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Wed 4/225:00 am
GRK
- PHL
1 stop5h 56m
American Airlines
Mon 4/276:32 pm
PHL
- GRK
1 stop6h 14m
American Airlines
Deal found 3/7![American Airlines logo]()
$575
One-way flights from Killeen to PhiladelphiaSearch for one-way flight options from Killeen to Philadelphia. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from Killeen to Philadelphia. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This American Airlines deal was found by Cheapflights users on 3/9. 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 3/176:33 pm
GRK
- PHL
1 stop5h 21m
American Airlines
Deal found 3/9![American Airlines logo]()
$558
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Mon 4/1311:58 am
GRK
- PHL
1 stop5h 50m
American Airlines
Deal found 3/5![American Airlines logo]()
$638
Find flight deals from Killeen to Philadelphia
Discover tips and strategies to find the most affordable flight options for your journey from Killeen (GRK) to Philadelphia (PHL). 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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $575 (American Airlines) |
One-way from | $558 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Killeen to Philadelphia 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 March 10, 2026.
Use the filters below to find and compare flights from Killeen to Philadelphia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Wed 4/22
5:00 am-11:56 am
1 stop5h 56m
Philadelphia
Mon 4/27
6:32 pm-11:46 pm
1 stop6h 14m
$575
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Fri 4/17
3:54 pm-12:11 am
1 stop7h 17m
Philadelphia
Sun 4/26
6:32 pm-11:46 pm
1 stop6h 14m
$595
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Fri 5/22
3:07 pm-10:53 pm
1 stop6h 46m
Philadelphia
Mon 5/25
9:08 am-2:37 pm
1 stop6h 29m
$615
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Thu 5/21
3:07 pm-10:53 pm
1 stop6h 46m
Philadelphia
Mon 5/25
5:30 pm-11:38 pm
1 stop7h 08m
$635
Quickest round-trip
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Thu 6/4
3:07 pm-10:00 pm
1 stop5h 53m
Philadelphia
Sun 6/7
5:00 am-9:34 am
1 stop5h 34m
$770
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Fri 6/19
6:44 am-2:51 pm
2 stops7h 07m
Philadelphia
Mon 6/22
9:08 am-2:37 pm
1 stop6h 29m
$848
Cheapest one-way
Quickest one-way
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Tue 3/17
6:33 pm-12:54 am
1 stop5h 21m
$558
KilleenPhiladelphia
GRK - PHL
GRKPHL
Killeen Fort Hood Regional
Mon 4/13
11:58 am-6:48 pm
1 stop5h 50m
$638
Sorted by cheapest first
Compare providers for flights from Killeen to Philadelphia
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Killeen to Philadelphia in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Killeen-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Killeen-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Killeen-Philadelphia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Killeen-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Killeen-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Killeen to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Killeen with our price prediction graph.
GRK-PHL
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 Philadelphia
Reviews of airlines servicing Philadelphia
Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated March 10, 2026.
Read reviews from past customers who have flown American Airlines from Killeen to Philadelphia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.5
Comfort
7.2
Crew
7.9
Entertainment
6.9
Food
6.4
Overall
7.1
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Boarding
7.5
Comfort
7.2
Crew
7.9
Entertainment
6.9
Food
6.4
Overall
7.1
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Related info for your journey
Find useful and relevant information for your journey from Killeen to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Ocean City
Cherry Hill
Lewes
Dewey Beach
Pottstown
Ephrata
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Glen Mills
Chester
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Killeen and Philadelphia flights
Browse other Killeen and Philadelphia flight options. Last updated on March 10, 2026.
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Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Killeen to Philadelphia
Discover the top airline that operate flights from Killeen to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$527 | Average$692 | FlexibilityNo cancel fee | On-time71% |