Flight Deals from Denver to Boston from $108

For flights from Denver to Boston, you'll find that prices vary significantly throughout the year. The most expensive times to fly typically occur from late November through mid-December and again in the summer, particularly mid-July. The highest price peak, reaching about $591, occurs around mid-November, while the most affordable period is found in late October, with prices dropping to around $230. Overall, the low season tends to be early spring and fall, where you can find prices consistently below $305, while high season prices can exceed $450.

To get the best price for your flight from Denver to Boston, aim to book around 100 days before departure, when prices are typically at their lowest, around $234. If you wait until less than 25 days, you'll face significantly higher prices, starting from $363 and rising to around $492 as departure day approaches. Prices spike dramatically within the last 13 days, so it's not advisable to wait until then, as you may end up paying as much as 31% more. The most economical time to purchase is well in advance, while times closer to your departure lead to a more expensive ticket.