Frontier's UpFront Plus guarantees an empty middle seat, offering more comfort.
Frontier's Zone 1 boarding is available with carry-on purchase, ensuring quicker boarding.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $58 (Super.com) |
One-way from | $37 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $136 |
Good round-trip deal | $112 or less |
Good one-way deal | $96 or less |
Fly from
Fly to
Route
Depart
Return
Price
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
pon. 4/6
2:37 pm-5:34 pm
Nonstop2h 57m
Seattle/Tacoma Intl
sob. 4/11
9:31 pm-12:11 am
Nonstop2h 40m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
pon. 2/23
4:41 pm-5:15 pm
1 stop24h 34m
Seattle/Tacoma Intl
pon. 3/2
9:14 pm-11:48 pm
Nonstop2h 34m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
wt. 3/3
9:30 am-12:20 pm
Nonstop2h 50m
Seattle/Tacoma Intl
pt. 3/6
6:00 pm-11:55 pm
1 stop5h 55m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
czw. 3/12
1:55 pm-4:45 pm
Nonstop2h 50m
Seattle/Tacoma Intl
wt. 3/17
8:05 pm-10:38 pm
Nonstop2h 33m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
czw. 2/26
5:05 pm-11:25 pm
2 stops6h 20m
Seattle/Tacoma Intl
pon. 3/2
11:30 am-6:30 pm
1 stop7h 00m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
wt. 2/3
9:30 am-12:20 pm
Nonstop2h 50m
Seattle/Tacoma Intl
śr. 2/4
11:20 am-4:05 pm
1 stop4h 45m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
pt. 3/13
5:40 pm-11:50 pm
1 stop6h 10m
Seattle/Tacoma Intl
pon. 3/16
6:15 am-8:45 am
Nonstop2h 30m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
wt. 3/17
6:00 am-8:51 am
Nonstop2h 51m
Seattle/Tacoma Intl
śr. 3/18
11:25 am-7:16 pm
1 stop7h 51m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
czw. 3/12
7:55 am-2:00 pm
1 stop6h 05m
Seattle/Tacoma Intl
pon. 3/16
2:40 pm-8:10 pm
1 stop5h 30m
Las VegasSeattle
LAS - SEA
LASSEA
Las Vegas Harry Reid Intl
śr. 3/11
7:00 am-5:09 pm
1 stop10h 09m
Seattle/Tacoma Intl
sob. 3/21
6:24 pm-10:22 am
1 stop15h 58m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars |
Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Las Vegas to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, March is the cheapest month in which you can book a flight from Las Vegas to Seattle (average of $42). Flying from Las Vegas to Seattle in July is currently the most expensive (average of $79). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Las Vegas to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 30% versus a flight in the afternoon.
Travelers seeking maximum savings on their Las Vegas to Seattle flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
About 12% of weekly flights between Las Vegas and Seattle have experienced delays in the past year, with the average delay time being 135 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 8% of flights being delayed.
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Comfort
Entertainment
Boarding
Food
Overall
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$45 | Average$129 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$53 | Average$113 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$79 | Average$183 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$91 | Average$197 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$107 | Average$215 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$116 | Average$203 | FlexibilityNo cancel fee | On-time75% |