Book cheap flights to Portsmouth - Boston

Compare cheap flights to Portsmouth - Boston (United States) on Opodo, all in one search. View airlines, times, layovers and fares, then filter by departure time or journey length to find the best flight for you.

The lowest fare to Portsmouth - Boston booked on Opodo in recent days was £76. Use this as a guide only, as the final price will vary depending on your travel dates and how far in advance you book.

Allegiant Air is the airline most often chosen by travellers heading to Portsmouth - Boston.

Allegiant Air flies direct to Portsmouth - Boston. Non-stop routes are available from the following cities:

• Orlando with Allegiant Air

A handful of simple checks can help you cut the cost of your trip to Portsmouth - Boston:

• Flexible dates: look at a few different departure days before you decide. Flying a day earlier or later can sometimes make a real difference to the price.
• Nearby airports: it's worth weighing up the alternatives. A smaller airport not too far from Portsmouth - Boston might be cheaper to fly into than the main one.
• Baggage: check what's included with each fare before you confirm. Knowing your allowance ahead of time means no nasty surprises at the airport.

Before you set off, double-check United States's entry requirements and leave yourself plenty of time to get your paperwork in order.

Don't forget that adding a hotel to your booking unlocks exclusive discounts on your stay. You can add car hire to the same booking too, and you may find further savings by bundling it with your flights and accommodation.