Cheap Flights from Portsmouth (PSM) to Baltimore (MTN)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Baltimore, MD (MTN-Martin State)

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN) cost?
Lock in a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN) 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 Martin State Airport (MTN)?
is the most affordable month to fly from PSM to MTN. Traveling during quieter months is often the key to finding better fares.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PSM to MTN. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN)?
Nonstop flights from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSM to MTN?
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 public holidays or peak travel times.*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 Martin State Airport (MTN)?
To avoid possible delays on the Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN) route, travel before 3 PM. Later departures 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 Martin State Airport (MTN) last-minute?
Booking your flight from PSM to MTN right before your journey is generally more expensive. However, if you're flexible with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a PSM to MTN flight and hotel package?
Booking a PSM to MTN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Martin State Airport (MTN)?
In most instances, you can modify or cancel your PSM to MTN flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Origin airport
Portsmouth Intl.
Destination airport
Martin State
Distance
389 mi

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Portsmouth to Baltimore Flights

The cheapest times to fly from Portsmouth to Baltimore

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

 

The best time to book a flight from Portsmouth to Baltimore

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

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 Baltimore 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 Baltimore 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 Baltimore 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 Baltimore Flights

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*Available to One Key members.