Spirit Airlines is selling cheap flights from Portland to Boston for as low as $114 return! That works out to a cost of just 2.3 Cents Per Mile for this 5100 mile journey.

The fare only includes a small carry-on bag placed under the seat, and you need to pay extra if you want to use the overhead storage or to check bags.

Our data shows the lowest prices are available in December 2021. See the link(s) below for dates and prices.

Sample date(s) with Kiwi.com booking link

Oct 1 – Oct 5 ($145)

Oct 8 – Oct 12 ($173)

Oct 12 – Oct 18 ($178)

Oct 12 – Oct 19 ($177)

Oct 13 – Oct 18 ($178)

Oct 13 – Oct 19 ($166)

Oct 15 – Oct 19 ($175)

Nov 5 – Nov 12 ($158)

Dec 3 – Dec 10 ($157)

Dec 7 – Dec 14 ($114)

Are you looking for an apartment to rent for your stay in Boston? Check out what Vrbo.com has to offer!

We post many cheap flights like this one from Portland to Boston every single day, so have a look at our Travel Deals page, or check out the related posts below!

Note: Prices are valid at the time of publishing this post, but may change in the future.

COVID-19 Note: During these uncertain times, please make sure to check the relevant Coronavirus restrictions for your destination before you book and before you fly. We recommend also checking the refund policy of the airline, as well as purchasing travel insurance for your trip.