Cheap Flights from Portsmouth (PSM) to Killeen (GRK)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Killeen, TX (GRK-Killeen-Fort Hood Regional)

Flights from Portsmouth (PSM) to Killeen (GRK)
Origin airport
Portsmouth Intl.
Destination airport
Killeen-Fort Hood Regional
Distance
1693 mi

Portsmouth to Killeen Flights

The cheapest times to fly from Portsmouth to Killeen

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portsmouth to Killeen are during the month of . You can find some of the cheapest flights from Portsmouth to Killeen with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portsmouth to Killeen

Sunday is one of the best days to book for cheap flights from Portsmouth to Killeen: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portsmouth to Killeen

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portsmouth to Killeen in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portsmouth to Killeen flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portsmouth to Killeen airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK) cost?
Snag a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK)?
The cheapest month to fly from PSM to GRK is , when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PSM to GRK flight.
How many flights per day from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK)?
There aren't any daily direct flights available from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from PSM to GRK?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK)?
To avoid possible delays on the Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK) last-minute?
Last-minute bookings from PSM to GRK are usually more expensive. To lock in the best prices, start looking for flights as early as possible. That being said, if you're flexible with your travel plans, you may score a cheap fare right before your journey.
Is it cheaper to book a PSM to GRK flight and hotel package?
You'll generally save money by securing a PSM to GRK flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your ideal accommodations and flights, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Killeen-Fort Hood Regional Airport (GRK)?
It's generally possible to cancel or reschedule your PSM to GRK flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.