Cheap flights from Boston to Denver from $258 BOS, PSM → DEN

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 48 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $172 to $394.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 7-night return fares leaving within 3 days of 8 Dec to compare.

Every date we hold

1 fares on 1 departure dates

Found recently, and the cheapest we hold

What have prices looked like?

Over 35 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $93 to $339.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 31 May 2027 to compare.

Every date we hold

4 fares on 4 departure dates

Which month looks cheapest?

May 2027 is the cheapest month — from $172.

Return

Fares 30 to 59 days before departure were typically 7% lower than 7 to 13 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (48 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 30 to 59 days before departure were typically 18% lower than 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (35 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Boston to Denver?

The cheapest return found recently is $258 with Southwest Airlines, 8 Dec to 15 Dec, found 2 days ago.

How much is a one-way flight from Boston to Denver?

The cheapest one-way found recently is $263 with United Airlines, 31 May 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $172 with jetBlue, 11 May 2027, found 5 days ago. The cheapest one-way fare on each of 4 departure dates is usually $219 to $282.

What is the cheapest month to fly from Boston to Denver?

May 2027 is the cheapest month for a one-way, from $172, 11 May 2027, found 5 days ago.

How far ahead should I book a flight from Boston to Denver?

In 48 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 7% lower than 7 to 13 days before departure. In 35 days of prices between 24 Sept and 11 Nov, one-way fares 30 to 59 days before departure were typically 18% lower than 14 to 29 days before departure.

Is there a direct flight from Boston to Denver?

Yes, the cheapest nonstop return found recently is $258 with Southwest Airlines, 8 Dec to 15 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $263 with United Airlines, 31 May 2027, found 2 days ago.

How long is the flight from Boston to Denver?

The cheapest nonstop one-way found recently, with United Airlines on 31 May 2027, takes 4 h 32 min from Logan International Airport (BOS) to Denver International Airport (DEN).

Which airlines have the cheapest flights from Boston to Denver?

Between 22 Nov and 31 May 2027, Breeze Airways has the cheapest one-way on 1 of the 4 departure dates we hold, Southwest Airlines on 1 and jetBlue on 1.