$28 Cheap Flights from Seattle (SEA) to Las Vegas (LAS)

View $28 flight on Tue, May 13, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Harry Reid Intl. Airport (LAS)

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Find available prices by choosing your travel dates.

Cheap Flights from Seattle to Las Vegas (SEA-LAS)

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed, May 21 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, May 21 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $56 just found
Frontier Airlines
Sun, May 25 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$73 Roundtrip, just found
$73
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 25 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $73 just found
Frontier Airlines
Sun, May 11 - Wed, May 14
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$79 Roundtrip, just found
$79
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 11 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 14, priced at $79 just found
Spirit Airlines
Thu, May 29 - Mon, Jun 2
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$86 Roundtrip, just found
$86
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, May 29 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Mon, Jun 2, priced at $86 just found
Frontier Airlines
Sun, May 25 - Fri, May 30
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$87 Roundtrip, just found
$87
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 25 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Fri, May 30, priced at $87 just found
Frontier Airlines
Sun, May 25 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$88 Roundtrip, just found
$88
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 25 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $88 just found
Frontier Airlines
Thu, May 29 - Thu, Jun 5
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$91 Roundtrip, just found
$91
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 29 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Thu, Jun 5, priced at $91 just found
Alaska Airlines
Sun, May 25 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$97 Roundtrip, just found
$97
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, May 25 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $97 just found
United
Wed, May 21 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$102 Roundtrip, just found
$102
Roundtrip
just found
Select United flight, departing Wed, May 21 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $102 just found
Southwest Airlines
Wed, May 21 - Wed, May 28
SEA
Seattle - Tacoma Intl.
LAS
Harry Reid Intl.
$112 Roundtrip, just found
$112
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, May 21 from Seattle - Tacoma Intl. to Harry Reid Intl., returning Wed, May 28, priced at $112 just found
Flights from Seattle (SEA) to Las Vegas (LAS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$56
Distance
866 mi

Seattle to Las Vegas Flights

The cheapest times to fly from Seattle to Las Vegas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Las Vegas are during the month of May. You can find some of the cheapest flights from Seattle to Las Vegas with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Seattle to Las Vegas

Sunday is one of the best days to book for cheap flights from Seattle to Las Vegas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Seattle to Las Vegas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $28 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Las Vegas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Las Vegas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS) cost?
Cheap round-trip fares from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS) start from $56. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving SEA on May 13 2025 and touching down at LAS. The price was last updated on April 19 2025 and has not changed since.
What is the cheapest month to fly from SEA to LAS?
The cheapest flights from SEA to LAS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
When flying from Seattle - Tacoma Intl. Airport (SEA), 5 carriers can take you straight to Harry Reid Intl. Airport (LAS) without a layover, including:

  • Alaska Airlines
  • Delta Air Lines
  • Southwest Airlines
  • Spirit Airlines
  • Frontier Airlines

What is the cheapest airline that flies from SEA to LAS?
Right now, the cheapest airline operating one-way flights from SEA to LAS is Spirit Airlines. You can jet off on this route from $28. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on May 20 2025. Prices were last updated on April 19 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
Every day on average, 15 nonstop flights operate from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS). Choose the departure time that best suits your travel plans.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
The 9 AM departures from SEA to LAS are the busiest. Greater demand means you’ll likely pay more for these departures. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from SEA to LAS?
Travel on a Monday if you’re looking for the best selection of flights from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
Catch the earliest flight at around 5:45AM UTC-8, departing from Seattle - Tacoma Intl. Airport (SEA). You’ll be flying for approximately 2h 25m, coming in to land at Harry Reid Intl. Airport (LAS) at approximately 8:10AM UTC-8.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
It takes about 2 hours and 31 minutes to travel the 870 mi from SEA to LAS.
What airline has the least delays from SEA to LAS?
Consider traveling with United Airlines if you’d like to fly straight from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS) without any interruptions. This airline has the best track record for punctuality, with an on-time score of 100%. Want real-time updates? You can check your flight status using the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Las Vegas from Seattle - Tacoma Intl. Airport (SEA)?
Harry Reid Intl. Airport (LAS) is the only airport in Las Vegas with direct flights from Seattle - Tacoma Intl. Airport (SEA). Browse the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS) last-minute?
Waiting until just before your departure to book your flight from SEA to LAS often results in higher prices. While it’s possible to find some last-minute discounts, there’s no guarantee. Keep your travel schedule open to maximize your chances of snagging a bargain.
Is it cheaper to book a SEA to LAS flight and hotel package?
Securing a SEA to LAS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our impressive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Harry Reid Intl. Airport (LAS)?
In most instances, you can modify or cancel your SEA to LAS flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline’s policies and fees on flight changes, or if you want more details, visit our Customer Service portal.

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