$227 Cheap Flights from Portsmouth (PSM) to Charleston (CHS)

View $227 flight on Wed, Dec 10, 2025Opens in a new window

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Charleston Intl. Airport (CHS)

Cheap Flights from Portsmouth to Charleston (PSM-CHS)

Prices were available within the past 7 days and start at $227 for one-way flights and $446 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Breeze Airways
Wed, Nov 19 - Tue, Dec 2
PSM
Portsmouth
CHS
Charleston
$446 Roundtrip, found 1 hour ago
$446
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Nov 19 from Portsmouth to Charleston, returning Tue, Dec 2, priced at $446 found 1 hour ago
Breeze Airways
Wed, Dec 3 - Tue, Dec 16
PSM
Portsmouth
CHS
Charleston
$455 Roundtrip, found 1 hour ago
$455
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Dec 3 from Portsmouth to Charleston, returning Tue, Dec 16, priced at $455 found 1 hour ago
Breeze Airways
Wed, Nov 19 - Fri, Dec 5
PSM
Portsmouth
CHS
Charleston
$465 Roundtrip, found 1 hour ago
$465
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Nov 19 from Portsmouth to Charleston, returning Fri, Dec 5, priced at $465 found 1 hour ago
Breeze Airways
Wed, Nov 19 - Wed, Dec 3
PSM
Portsmouth
CHS
Charleston
$469 Roundtrip, found 1 hour ago
$469
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Nov 19 from Portsmouth to Charleston, returning Wed, Dec 3, priced at $469 found 1 hour ago
Breeze Airways
Wed, Nov 12 - Fri, Nov 14
PSM
Portsmouth
CHS
Charleston
$474 Roundtrip, found 1 day ago
$474
Roundtrip
found 1 day ago
Select Breeze Airways flight, departing Wed, Nov 12 from Portsmouth to Charleston, returning Fri, Nov 14, priced at $474 found 1 day ago
Breeze Airways
Wed, Dec 3 - Wed, Dec 17
PSM
Portsmouth
CHS
Charleston
$479 Roundtrip, found 1 hour ago
$479
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Dec 3 from Portsmouth to Charleston, returning Wed, Dec 17, priced at $479 found 1 hour ago
Breeze Airways
Wed, Nov 12 - Tue, Nov 25
PSM
Portsmouth
CHS
Charleston
$483 Roundtrip, found 1 hour ago
$483
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Nov 12 from Portsmouth to Charleston, returning Tue, Nov 25, priced at $483 found 1 hour ago
Breeze Airways
Sat, Nov 1 - Tue, Nov 18
PSM
Portsmouth
CHS
Charleston
$485 Roundtrip, found 2 days ago
$485
Roundtrip
found 2 days ago
Select Breeze Airways flight, departing Sat, Nov 1 from Portsmouth to Charleston, returning Tue, Nov 18, priced at $485 found 2 days ago
Breeze Airways
Sat, Nov 15 - Wed, Dec 3
PSM
Portsmouth
CHS
Charleston
$488 Roundtrip, found 1 hour ago
$488
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Sat, Nov 15 from Portsmouth to Charleston, returning Wed, Dec 3, priced at $488 found 1 hour ago
Breeze Airways
Wed, Dec 10 - Tue, Dec 23
PSM
Portsmouth
CHS
Charleston
$492 Roundtrip, found 1 hour ago
$492
Roundtrip
found 1 hour ago
Select Breeze Airways flight, departing Wed, Dec 10 from Portsmouth to Charleston, returning Tue, Dec 23, priced at $492 found 1 hour ago

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS) cost?
Get a cheap one-way flight from $227 or cheap return flight from $446 from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS)?
November is the least expensive month to fly from PSM to CHS. Avoiding peak travel times is often the key to landing a great deal.
Which airlines fly direct from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS)?
You can't take a direct flight to Charleston Intl. Airport (CHS) from Portsmouth, NH (PSM-Portsmouth Intl.). However, you can easily reach Charleston without any layovers by departing from Logan Intl. Airport (BOS).
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS)?
To find the cheapest airline that'll fly you from PSM to CHS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS)?
You'll need to hop on a flight with a layover when traveling from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from PSM to CHS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, such as the time of year 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 Charleston Intl. Airport (CHS)?
Select a flight from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time have a 22% higher chance of being canceled, on average.**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 Charleston Intl. Airport (CHS) last-minute?
Booking your plane ticket from PSM to CHS just before your getaway is usually more expensive. However, if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a PSM to CHS flight and hotel package?
You'll generally save money by securing a PSM to CHS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After choosing your preferred accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Charleston Intl. Airport (CHS)?
In most instances, you're able to cancel or reschedule your PSM to CHS flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more information, visit our Customer Service portal.

Travel information

Origin airport
Portsmouth Intl.
Destination airport
Charleston Intl.
Airlines serving
Breeze Airways
Roundtrip price
$445
Distance
863 mi

Book with confidence

Portsmouth to Charleston Flights

The cheapest times to fly from Portsmouth to Charleston

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

 

The best time to book a flight from Portsmouth to Charleston

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

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 Charleston in 2025. You can also book with separate airlines for your outbound and return journeys, from $227 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 Charleston 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 Charleston 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.

 

Portsmouth to Charleston Flights

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*Available to One Key members.