Boston to Las Vegas BOS → LAS
Logan International Airport (BOS) → McCarran International Airport (LAS)
The cheapest return found recently is $364 with Southwest Airlines, 21 Dec – 1 Jan 2027, found today. The cheapest one-way found recently is $166 with Southwest Airlines, 21 Dec, found 2 days ago.
Return
The cheapest return fare on each of 9 departure dates is usually $354 to $429.
Cheapest return found recently
$364
21 Dec – 1 Jan 2027 · Southwest Airlines
Logan International Airport (BOS) → McCarran International Airport (LAS)
Leaves 8:05 p.m. · Return leaves 12:30 a.m. · 16 h 18 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
$411
28 Nov – 1 Dec · jetBlue
Logan International Airport (BOS) → McCarran International Airport (LAS)
Leaves 6:15 a.m. · Return leaves 11:59 p.m. · 11 h of travel, both ways together
out nonstop, back nonstop
found today
Found recently, and the cheapest we hold
$364 21 Dec – 1 Jan 2027found todaySee prices for these dates
$310 4 Nov – 6 Novfound 4 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 $216 to $319.
At $364, the cheapest return 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 return price?
Compared with the cheapest return fare on each of 9 departure dates from 4 Nov to 14 May 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 11-night return fares leaving within 3 days of 21 Dec to compare.
Every date we hold
12 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 4 Nov – 6 Nov | $310 | Frontier Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 9 Nov – 12 Nov | $354 | Alaska Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 2 stops | found 2 days ago | See prices for these dates |
| 18 Nov – 22 Nov | $429 | jetBlue | Logan International Airport (BOS) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 27 Nov – 1 Dec | $318 | Southwest Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 28 Nov – 1 Dec | $411 | jetBlue | Logan International Airport (BOS) → McCarran International Airport (LAS) | out nonstop, back nonstop | found today | See prices for these dates |
| 21 Dec – 1 Jan 2027 | $364 | Southwest Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 1 Feb 2027 – 15 Feb 2027 | $437 | Alaska Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 5 Feb 2027 – 13 Feb 2027 | $408 | American Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 14 May 2027 – 16 May 2027 | $442 | Southwest Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $310.
Airlines on the cheapest dates: Southwest Airlines, Alaska Airlines, jetBlue, Frontier Airlines, American Airlines.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $163 to $185.
Cheapest one-way found recently
$166
21 Dec · Southwest Airlines
Logan International Airport (BOS) → McCarran International Airport (LAS)
Leaves 8:05 p.m. · 7 h 55 min trip
1 stop
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$166 21 Decfound 2 days agoOpen this trip
$159 13 Novfound 6 days agoOpen this trip
What have prices looked like?
Over 18 days, 1 Oct to 18 Oct, the cheapest one-way we saw each day was $131 to $210.
18 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?
Compared with the cheapest one-way fare on each of 3 departure dates from 13 Nov to 14 May 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 one-way fares leaving within 3 days of 21 Dec to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov | $159 | Southwest Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | stops unknown | found 6 days ago | Open this trip |
| 21 Dec | $166 | Southwest Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | 1 stop | found 2 days ago | Open this trip |
| 14 May 2027 | $204 | American Airlines | Logan International Airport (BOS) → McCarran International Airport (LAS) | 1 stop | found 5 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $159.
Airlines on the cheapest dates: Southwest Airlines, American Airlines.
Premium cabin fares from Boston to Las Vegas
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 21 Dec – 1 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 21 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to Las Vegas?
Return
Fares 30 to 59 days before departure were typically 29% 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 | $425 | $293 | +41% | 7 |
| 7–13 days | $511 | $233 | +70% | 10 |
| 14–29 days | $310 | $242 | +3% | 9 |
| 30–59 days | $301 | $242 | Cheapest seen | 25 |
| 60–89 days | $310 | $216 | +3% | 20 |
| 90–179 days | $383 | $314 | +27% | 12 |
| 180+ days | $388 | $388 | +29% | 9 |
One-way
Not enough history yet: in 18 days of one-way prices, 1 Oct to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 21 Dec – 1 Jan 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