Seattle to Las Vegas SEA → LAS
Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS)
The cheapest return found recently is $227 with Alaska Airlines, 28 Oct – 3 Nov, found yesterday. The cheapest one-way found recently is $132 with Southwest Airlines, 25 Dec, found 2 days ago.
Return
The cheapest return fare on each of 6 departure dates is usually $239 to $251.
Cheapest return found recently
$227
28 Oct – 3 Nov · Alaska Airlines
Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS)
Leaves 10:58 a.m. · Return leaves 6:00 a.m. · 7 h 33 min of travel, both ways together
out 1 stop, back nonstop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$227 28 Oct – 3 Novfound 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 $80 to $290.
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 6 departure dates from 27 Oct to 18 Dec, 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?
No. We hold 6-night return fares on 1 other departure date within 3 days of 28 Oct, and it is not cheaper.
Every date we hold
8 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 27 Oct – 4 Nov | $249 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 28 Oct – 3 Nov | $227 | Alaska Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found yesterday | See prices for these dates |
| 12 Nov – 17 Nov | $248 | Southwest Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 26 Nov – 28 Nov | $384 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found yesterday | See prices for these dates |
| 27 Nov – 1 Dec | $236 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out nonstop, back 1 stop | found today | See prices for these dates |
| 18 Dec – 20 Dec | $251 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | out 1 stop, back nonstop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
October 2026 is the cheapest month — from $227.
Airlines on the cheapest dates: Frontier Airlines, Alaska Airlines, Southwest Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$132
25 Dec · Southwest Airlines
Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS)
Leaves 9:25 a.m. · 5 h 45 min trip
1 stop
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$132 25 Decfound 2 days agoOpen this trip
$96 5 Novfound 4 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 $64 to $157.
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 25 Dec to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Nov | $96 | Frontier Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | 1 stop | found 4 days ago | Open this trip |
| 25 Dec | $132 | Southwest Airlines | Seattle-Tacoma International Airport (SEA) → McCarran International Airport (LAS) | 1 stop | found 2 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $96.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from Seattle 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 28 Oct – 3 Nov in another cabin: Premium economy · Business · First
Today's prices for 25 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Las Vegas?
Return
Fares 14 to 29 days before departure were typically 58% 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 | $353 | $264 | +135% | 14 |
| 7–13 days | $291 | $147 | +94% | 18 |
| 14–29 days | $150 | $135 | Cheapest seen | 17 |
| 30–59 days | $204 | $199 | +36% | 11 |
| 60–89 days | $230 | $80 | +53% | 25 |
One-way
Fares 60 to 89 days before departure were typically 86% lower than 0 to 6 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 |
|---|---|---|---|---|
| 0–6 days | $473 | $137 | +596% | 9 |
| 7–13 days | $361 | $91 | +431% | 11 |
| 14–29 days | $117 | $64 | +72% | 19 |
| 30–59 days | $105 | $88 | +54% | 11 |
| 60–89 days | $68 | $68 | Cheapest seen | 14 |
| 180+ days | $228 | $228 | +235% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Everett → Las Vegas
34 km from Seattle
$271
$44 more than flying from Seattle
27 Nov – 1 Dec · PAE → LAS · out nonstop, back nonstop
found today
Bellingham → Las Vegas
128 km from Seattle
$96
$131 less than flying from Seattle
6 Nov – 8 Nov · BLI → LAS · out nonstop, back nonstop
found 6 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Everett → Las Vegas
34 km from Seattle
$252
$120 more than flying from Seattle
25 Dec · PAE → LAS · nonstop
found 2 days ago
Bellingham → Las Vegas
128 km from Seattle
$298
$166 more than flying from Seattle
28 Oct · BLI → LAS · 1 stop
found yesterday
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 28 Oct – 3 Nov. 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