Cheap Flights from Louisville (SDF) to Portsmouth (PSM)

Popular airlines from Louisville Intl. Airport (SDF) to Portsmouth, NH (PSM-Portsmouth Intl.)

Cheap Flights from Louisville to Portsmouth (SDF-PSM)

Prices were available within the past 7 days and start at for one-way flights and $588 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Breeze Airways
Tue, Dec 23 - Wed, Jan 7
SDF
Louisville
PSM
Portsmouth
$588 Roundtrip, found 6 days ago
$588
Roundtrip
found 6 days ago
Select Breeze Airways flight, departing Tue, Dec 23 from Louisville to Portsmouth, returning Wed, Jan 7, priced at $588 found 6 days ago
Breeze Airways
Tue, Dec 23 - Sat, Jan 10
SDF
Louisville
PSM
Portsmouth
$606 Roundtrip, found 6 days ago
$606
Roundtrip
found 6 days ago
Select Breeze Airways flight, departing Tue, Dec 23 from Louisville to Portsmouth, returning Sat, Jan 10, priced at $606 found 6 days ago
Breeze Airways
Tue, Dec 30 - Wed, Jan 14
SDF
Louisville
PSM
Portsmouth
$974 Roundtrip, found 6 days ago
$974
Roundtrip
found 6 days ago
Select Breeze Airways flight, departing Tue, Dec 30 from Louisville to Portsmouth, returning Wed, Jan 14, priced at $974 found 6 days ago
Breeze Airways
Tue, Dec 30 - Sat, Jan 17
SDF
Louisville
PSM
Portsmouth
$1,020 Roundtrip, found 6 days ago
$1,020
Roundtrip
found 6 days ago
Select Breeze Airways flight, departing Tue, Dec 30 from Louisville to Portsmouth, returning Sat, Jan 17, priced at $1,020 found 6 days ago

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM) cost?
Lock in a cheap one-way flight or cheap return flight from $588 from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM) 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 Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM)?
December is the cheapest month to fly from SDF to PSM. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SDF to PSM flight.
How many flights per day from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM)?
There are no daily nonstop flights available from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from SDF to PSM?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM)?
To avoid potential delays on the Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be 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.
What airports do you fly into for Portsmouth from Louisville Intl. Airport (SDF)?
If you're flying on a direct flight from Louisville Intl. Airport (SDF) to Portsmouth, Logan Intl. Airport (BOS) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM) last-minute?
Booking your plane ticket from SDF to PSM just before your getaway is usually more expensive. But if you're flexible with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a SDF to PSM flight and hotel package?
You can save money by booking a SDF to PSM flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your preferred flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Portsmouth Intl. Airport (PSM)?
Typically, you're able to cancel or reschedule your SDF to PSM flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more details, visit our Customer Service portal.

Travel information

Origin airport
Louisville Intl.
Destination airport
Portsmouth Intl.
Roundtrip price
$587
Distance
850 mi

Book with confidence

Louisville to Portsmouth Flights

The cheapest times to fly from Louisville to Portsmouth

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 Louisville to Portsmouth are during the month of December. You can find some of the cheapest flights from Louisville to Portsmouth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Portsmouth

Sunday is one of the best days to book for cheap flights from Louisville to Portsmouth: 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 Louisville to Portsmouth

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 Louisville to Portsmouth 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 Louisville to Portsmouth 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 Louisville to Portsmouth 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.

 

Louisville to Portsmouth Flights

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*Available to One Key members.