Boston to Phoenix BOS → PHX
Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX)
The cheapest return found recently is $404 with Alaska Airlines, 17 Dec – 23 Dec, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $427 to $462.
Cheapest return found recently
$404
17 Dec – 23 Dec · Alaska Airlines
Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX)
Leaves 7:40 a.m. · Return leaves 4:32 p.m. · 21 h 6 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$475
7 Mar 2027 – 11 Mar 2027 · American Airlines
Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX)
Leaves 9:26 a.m. · Return leaves 11:45 p.m. · 10 h 54 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$404 17 Dec – 23 Decfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $325 to $435.
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 17 Dec to 10 Mar 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 6-night return fares leaving within 3 days of 17 Dec to compare.
Every date we hold
6 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Dec – 23 Dec | $404 | Alaska Airlines | Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 7 Mar 2027 – 11 Mar 2027 | $475 | American Airlines | Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 10 Mar 2027 – 11 Mar 2027 | $449 | Alaska Airlines | Logan International Airport (BOS) → Phoenix Sky Harbor International Airport (PHX) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $404.
Airlines on the cheapest dates: Alaska Airlines, American Airlines.
Premium cabin fares from Boston to Phoenix
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 17 Dec – 23 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to Phoenix?
Return
The cheapest fares were 14 to 29 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 |
|---|---|---|---|---|
| 14–29 days | $343 | $343 | Cheapest seen | 8 |
| 60–89 days | $409 | $325 | +19% | 25 |
| 180+ days | $386 | $386 | +13% | 7 |
Live price for these dates
The cheapest return found recently is for 17 Dec – 23 Dec. 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