Find a great deal and save up to 43% by booking at least 42 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Portsmouth, New Hampshire within the next two weeks, with the cheapest ticket starting at $331.
January is one of the best times of the year to fly to Portsmouth, New Hampshire from Seattle. Prices for January average $375 per person but you can even find prices for as low as $99. The most expensive prices can be found in the month of July. Opting for a January flight can save you 34% on your journey compared to booking in July
When flying from Seattle to Portsmouth, New Hampshire, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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