Frontier's UpFront Plus guarantees an empty middle seat for added comfort.
Frontier's Zone 1 boarding available with carry-on purchase or special fare bundles.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $64 (Cheapflightsfares) |
One-way from | $33 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $388 |
Good round-trip deal | $83 or less |
Good one-way deal | $43 or less |
Fly from
Fly to
Route
Depart
Return
Price
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
vie. 1/9
9:02 pm-11:40 pm
Nonstop2h 38m
Las Vegas Harry Reid Intl
lun. 1/12
4:51 pm-7:47 pm
Nonstop2h 56m
DenverLas Vegas
DEN - LAS
DENLAS
Denver Intl
mié. 2/11
8:54 am-3:21 pm
1 stop7h 27m
Las Vegas Harry Reid Intl
mié. 2/18
6:30 am-9:31 am
Nonstop2h 01m
DenverLas Vegas
DEN - LAS
DENLAS
Denver Intl
vie. 1/30
3:38 pm-11:42 pm
1 stop9h 04m
Las Vegas Harry Reid Intl
sáb. 1/31
7:30 am-10:32 am
Nonstop2h 02m
San FranciscoLas Vegas
SFO - LAS
SFOLAS
San Francisco
mié. 2/18
10:45 am-12:32 pm
Nonstop1h 47m
Las Vegas Harry Reid Intl
vie. 2/20
6:00 am-7:48 am
Nonstop1h 48m
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
jue. 3/5
6:15 am-8:45 am
Nonstop2h 30m
Las Vegas Harry Reid Intl
lun. 3/9
10:40 pm-1:25 am
Nonstop2h 45m
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
dom. 3/8
7:15 am-9:47 am
Nonstop2h 32m
Las Vegas Harry Reid Intl
mié. 3/11
11:00 am-1:48 pm
Nonstop2h 48m
DenverLas Vegas
DEN - LAS
DENLAS
Denver Intl
vie. 2/27
6:00 am-7:16 am
Nonstop2h 16m
Las Vegas Harry Reid Intl
sáb. 2/28
12:59 am-3:56 am
Nonstop1h 57m
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
jue. 1/8
1:20 pm-3:50 pm
Nonstop2h 30m
Las Vegas Harry Reid Intl
lun. 1/12
3:25 pm-11:05 pm
1 stop7h 40m
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
sáb. 2/7
7:00 am-1:05 pm
1 stop6h 05m
Las Vegas Harry Reid Intl
lun. 2/9
8:50 pm-11:40 pm
Nonstop2h 50m
SeattleLas Vegas
SEA - LAS
SEALAS
Seattle/Tacoma Intl
vie. 1/23
4:40 pm-10:00 pm
1 stop5h 20m
Las Vegas Harry Reid Intl
mar. 1/27
9:30 am-12:20 pm
Nonstop2h 50m
Currently, January is the cheapest month in which you can book a flight from USA to Las Vegas (average of $36). Flying from USA to Las Vegas in July is currently the most expensive (average of $49). 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.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 11% on flights from USA to Las Vegas by exploring options for tickets at noon.
Travelers seeking maximum savings on their USA to Las Vegas flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from US0 to LAS are scheduled on a Thursday (131 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (68 on average).
About 15% of weekly flights between United States and Las Vegas have experienced delays in the past year, with the average delay time being 130 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Air Cargo Carriers have had the lowest number of delays on this route, with just 10% of flights being delayed.
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Comfort
Entertainment
Boarding
Overall
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$188 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$39 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$65 | Average$239 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$68 | Average$349 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$82 | Average$148 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$85 | Average$361 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$89 | Average$318 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$93 | Average$345 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$369 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$99 | Average$321 | FlexibilityNo cancel fee | On-time75% |