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

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Baltimore Washington Intl. Airport (BWI)

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Flights from Portsmouth (PSM) to Baltimore (BWI)
Origin airport
Portsmouth Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Distance
406 mi

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.

 

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) cost?
Get a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
The cheapest month to fly from PSM to BWI is , when there's less demand. Off-peak season is often when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
There aren't any direct flights from Portsmouth, NH (PSM-Portsmouth Intl.) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). However, you'll find other airports with nonstop flights. Hop on your plane at Logan Intl. Airport (BOS) and travel straight to Baltimore without a layover.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from PSM to BWI. 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
You'll have to catch a flight with a layover when traveling from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PSM to BWI?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, including 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
To land at Baltimore Washington Intl. Thurgood Marshall Airport (BWI) without delays, opt for a flight that leaves Portsmouth Intl. Airport (PSM) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) last-minute?
Waiting until just before your departure to book a flight from PSM to BWI generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a PSM to BWI flight and hotel package?
Compared with arranging hotels and flights separately, booking a PSM to BWI flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
It's usually possible to cancel or reschedule your PSM to BWI flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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