$29 Cheap Flights from Seattle (SEA) to Las Vegas (LAS)

Seattle (SEA) to Las Vegas (LAS) at a glance

Travelers can choose from a variety of airlines offering Seattle to Las Vegas flights on this convenient domestic route. Whether you prefer full-service airlines or budget options, you can easily compare choices to find the best fit for your schedule and Seattle to Las Vegas airfare. As you prepare to explore the vibrant sights and neighborhoods of Las Vegas, gather essential information about flight time and details for your journey from Seattle-Tacoma International Airport (SEA) to Harry Reid International Airport (LAS).

• Fastest flight duration: around 2h 30m non-stop
• Route distance: roughly 900 miles (1,450 km)
• Flights per week: around 110+ flights with multiple daily departures on average
• Typical fares (one-way): economy tickets often range from $50–$280, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to Harry Reid International Airport (LAS)

Based on the latest traveler bookings, here are the top airlines favored for flights from Seattle to Las Vegas, offering both non-stop and one-stop options. Popular layover spots include Salt Lake City International Airport (SLC) with approximately a 55-minute layover, San Francisco International Airport (SFO) at about 1 hour and 15 minutes, and Sacramento International Airport (SMF) with a 1 hour and 30 minutes layover. This variety allows you to customize your itinerary based on price, total travel time, and cabin class.

• Alaska Airlines: This full-service airline provides both non-stop and one-stop flights, with one-way fares generally between $60 and $320. It represents about 47% of departures on this route, and the average journey duration is 2 hours and 30 minutes.
• Delta: Another full-service option, Delta offers non-stop flights, with one-way ticket prices typically ranging from $50 to $315. It accounts for roughly 31% of the departures from this route, with a standard flight time of 2 hours and 30 minutes.
• Southwest Airlines: As a low-cost carrier, Southwest provides non-stop and one-stop services, with one-way fares averaging between $50 and $295. This airline makes up about 14% of the departures on this route, and its non-stop flight time is usually 2 hours and 30 minutes.
• Frontier Airlines: A budget-friendly airline, Frontier offers both non-stop and one-stop options, with one-way fares typically priced from $50 to $210. It comprises around 6% of the departures on this route, with a non-stop travel time of 2 hours and 30 minutes.
• Hawaiian Airlines: This full-service carrier focuses on non-stop flights, with one-way fares typically ranging from $80 to $295. It accounts for about 1% of departures on this route, and the total journey time is consistently 2 hours and 30 minutes.

Travelers flying from Seattle to Las Vegas have the option to upgrade their flight experience. Delta provides first class and premium economy seating, while Alaska Airlines features first class and business class. Hawaiian Airlines also offers first class service.

Best time to fly from Seattle (SEA) to Las Vegas (LAS)

The most popular months for travelers flying from Seattle to Las Vegas are February, March, and April, when peak temperatures in Las Vegas reach up to 66.4°F in April. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 82.6°F. For better deals, January usually offers the lowest average one-way fare around $134. Flight availability peaks in October, with approximately 124 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 98 flights per week.

• Cheapest time to fly: January usually offers good deals with average one-way fare around $134, roughly 10% cheaper than the yearly average.
• More budget-friendly months to fly: August, September, and November typically offer average one-way fares of around $142.
• Most flight options: October has the highest number of flights from Seattle to Las Vegas, with approximately 124 flights per week, giving you more flexibility in scheduling your trip.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Seattle (SEA) to Las Vegas (LAS)

• Seattle to Las Vegas (BFI-LAS): Located approximately 6 miles from Seattle - Tacoma International Airport (SEA), Boeing Field Airport (BFI) serves as a convenient departure point for travelers heading to Las Vegas.
• Seattle to Henderson (SEA-HSH): Henderson Executive Airport (HSH) lies about 7 miles from Harry Reid International Airport (LAS), providing a handy option for those looking to reach Henderson from Seattle.
• Seattle to Laughlin (SEA-IFP): Laughlin - Bullhead International Airport (IFP) is situated roughly 71 miles from Harry Reid International Airport (LAS), offering another route for travelers from Seattle to this desert destination.

How to find the best prices for flights from Seattle (SEA) to Las Vegas (LAS)

Getting some of the best deals on flights from Seattle to Las Vegas is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures from 6 PM to 12 AM often offer lower prices, while morning flights from 5 AM to 12 PM are more popular. Additionally, flying on Monday typically results in cheaper fares, although Friday remains the busiest travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Harry Reid International Airport from Seattle - Tacoma International Airport

Las Vegas welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Las Vegas efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Las Vegas, with private rides that can be arranged in advance.
• Car rental: Renting a car from Harry Reid International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Harry Reid International Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Harry Reid International Airport, travelers can easily access several key transport options; Las Vegas International Airport Station, a train station, is just 0.1 miles away on foot, while the South Strip Transit Terminal, a bus station, is about 2.5 miles from the airport and typically reached by car. Additionally, the MGM Grand Monorail Station, a metro station, is located approximately 3.4 miles away by car.

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 February. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $29 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.