Denver to Boston DEN → BOS
Denver International Airport (DEN) → Logan International Airport (BOS)
The cheapest return found recently is $410 with jetBlue, 12 Feb 2027 – 15 Feb 2027, found yesterday. The cheapest one-way found recently is $151 with Southwest Airlines, 6 Jan 2027, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $398 to $426.
Cheapest return found recently
$410
12 Feb 2027 – 15 Feb 2027 · jetBlue
Denver International Airport (DEN) → Logan International Airport (BOS)
Leaves 11:59 p.m. · Return leaves 8:15 p.m. · 8 h 37 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$410
12 Feb 2027 – 15 Feb 2027 · jetBlue
Denver International Airport (DEN) → Logan International Airport (BOS)
Leaves 11:59 p.m. · Return leaves 8:15 p.m. · 8 h 37 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$410 12 Feb 2027 – 15 Feb 2027found yesterdaySee prices for these dates
$385 25 Oct – 28 Octfound 2 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $126 to $437.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 24 Oct to 12 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 12 Feb 2027 to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct – 28 Oct | $441 | Frontier Airlines | Denver International Airport (DEN) → Logan International Airport (BOS) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 25 Oct – 28 Oct | $385 | Frontier Airlines | Denver International Airport (DEN) → Logan International Airport (BOS) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 12 Feb 2027 – 15 Feb 2027 | $410 | jetBlue | Denver International Airport (DEN) → Logan International Airport (BOS) | out nonstop, back nonstop | found yesterday | See prices for these dates |
Which month looks cheapest?
October 2026 is the cheapest month — from $385.
Airlines on the cheapest dates: Frontier Airlines, jetBlue.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$151
6 Jan 2027 · Southwest Airlines
Denver International Airport (DEN) → Logan International Airport (BOS)
Leaves 11:15 a.m. · 3 h 40 min trip
nonstop
found yesterday
Cheapest nonstop one-way
$151
6 Jan 2027 · Southwest Airlines
Denver International Airport (DEN) → Logan International Airport (BOS)
Leaves 11:15 a.m. · 3 h 40 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$151 6 Jan 2027found yesterdayOpen this trip
$135 13 Novfound 3 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $92 to $147.
At $151, the cheapest one-way found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 6 Jan 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov | $135 | Frontier Airlines | Denver International Airport (DEN) → Logan International Airport (BOS) | 1 stop | found 3 days ago | Open this trip |
| 6 Jan 2027 | $151 | Southwest Airlines | Denver International Airport (DEN) → Logan International Airport (BOS) | nonstop | found yesterday | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $135.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from Denver to Boston
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 12 Feb 2027 – 15 Feb 2027 in another cabin: Premium economy · Business · First
Today's prices for 6 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Denver to Boston?
Return
Fares 14 to 29 days before departure were typically 20% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 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.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $431 | $413 | +24% | 9 |
| 7–13 days | $431 | $385 | +24% | 9 |
| 14–29 days | $347 | $313 | Cheapest seen | 9 |
| 90–179 days | $362 | $126 | +4% | 24 |
One-way
The cheapest fares were 14 to 29 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 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.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $104 | $104 | Cheapest seen | 13 |
| 30–59 days | $141 | $107 | +36% | 18 |
| 60–89 days | $145 | $92 | +39% | 9 |
Live price for these dates
The cheapest return found recently is for 12 Feb 2027 – 15 Feb 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work