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Cheap flights from Seattle to Las Vegas from £43

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAS
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl are usually found in October or November, booked 48 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap flight deals from Seattle to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 September 2025.

Round-trip from

£83

One-way from

£43

Popular in

December

Cheapest in

October

Average price

£133

Good one-way deal

£55 or less
Frontier
  • Frontier
  • 31/10-7/11
  • 1 total stop
  • 12h 55m total
  • Seattle to Las Vegas
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Delta
  • Delta
  • 31/1
  • Nonstop
  • 2h 35m total
  • Seattle to Las Vegas
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Highest demand for flights based on searches. 2% potential increase in price (£3 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl.
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Find flight deals from Seattle to Las Vegas

Cheapest flights from Seattle to Las Vegas
Explore the most affordable flight options available from Seattle to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Fri 31/1012:58SEA - LAS
1 stop9h 52mFrontier
Fri 7/1115:29LAS - SEA
Nonstop3h 03mFrontier
Deal found 16/9£83
Tue 7/1012:00SEA - LAS
Nonstop2h 39mDelta
Thu 16/1015:44LAS - SEA
Nonstop2h 51mDelta
Deal found 16/9£86
Wed 17/1215:45SEA - LAS
Nonstop2h 30mDelta
Tue 23/1206:00LAS - SEA
Nonstop2h 53mDelta
Deal found 16/9£93
Wed 29/1016:41SEA - LAS
Nonstop2h 34mHawaiian Airlines
Wed 5/1118:37LAS - SEA
Nonstop2h 52mHawaiian Airlines
Deal found 14/9£94
Tue 7/1014:16SEA - LAS
Nonstop2h 37mAlaska Airlines
Tue 7/1019:35LAS - SEA
Nonstop2h 55mAlaska Airlines
Deal found 15/9£96
Sun 2/1107:10SEA - LAS
1 stop4h 40mSouthwest
Tue 4/1107:25LAS - SEA
1 stop7h 00mSouthwest
Deal found 16/9£100
Wed 8/1012:00SEA - LAS
Nonstop2h 39mDelta
Wed 8/1019:10LAS - SEA
Nonstop2h 50mDelta
Deal found 15/9£100
Wed 8/1015:44SEA - LAS
Nonstop2h 31mDelta
Thu 9/1010:52LAS - SEA
Nonstop2h 58mDelta
Deal found 15/9£108
Tue 14/1006:15SEA - LAS
2 stops6h 05mSouthwest
Wed 15/1020:10LAS - SEA
Nonstop2h 45mSouthwest
Deal found 15/9£111

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 September 2025.
Use the filters below to find and compare flights from Seattle to Las Vegas that are best for you.

Fly from

Seattle

Fly to

Las Vegas

Route

Depart

Return

Price

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 17/12

19:59-22:34

Nonstop2h 35m

Las Vegas Harry Reid Intl

Wed 7/1

18:00-20:52

Nonstop2h 52m

£100

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 7/1

19:50-22:20

Nonstop2h 30m

Las Vegas Harry Reid Intl

Thu 12/2

19:15-21:53

Nonstop2h 38m

£108

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 12/11

07:10-09:50

Nonstop2h 40m

Las Vegas Harry Reid Intl

Sat 15/11

15:50-18:41

Nonstop2h 51m

£108

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Tue 23/12

20:10-22:50

Nonstop2h 40m

Las Vegas Harry Reid Intl

Fri 26/12

06:00-08:53

Nonstop2h 53m

£108

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Sat 25/10

17:30-22:10

1 stop4h 40m

Las Vegas Harry Reid Intl

Tue 28/10

09:00-11:45

Nonstop2h 45m

£115

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Tue 3/3

12:00-14:38

Nonstop2h 38m

Las Vegas Harry Reid Intl

Wed 4/3

06:00-08:50

Nonstop2h 50m

£115

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Mon 29/12

05:00-12:55

1 stop7h 55m

Las Vegas Harry Reid Intl

Wed 31/12

06:00-12:05

1 stop6h 05m

£122

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 22/10

05:21-09:17

1 stop3h 56m

Las Vegas Harry Reid Intl

Wed 29/10

10:08-13:03

Nonstop2h 55m

£122

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 12/11

16:41-19:15

Nonstop2h 34m

Las Vegas Harry Reid Intl

Wed 12/11

20:50-07:15

1 stop10h 25m

£122

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Wed 4/2

13:55-18:29

1 stop4h 34m

Las Vegas Harry Reid Intl

Wed 11/2

09:30-12:20

Nonstop2h 50m

£122

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 23 results
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Best time to book a flight from Seattle to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Las Vegas

How far ahead should I book a flight from Seattle to Las Vegas?

Use this chart to determine the optimal time to book a return flight from Seattle to Las Vegas. Price data was last updated on 12 September 2025.

The best time to book flights from Seattle to Las Vegas is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from Seattle to Las Vegas (average of £689). Flying from Seattle to Las Vegas in July is currently the most expensive (average of £1,020). 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.

What is the cheapest time of day to fly from SEA to LAS?

Find hourly flight availability from Seattle to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

It’s typically best to fly out from Seattle to Las Vegas at midday. Doing so could potentially save you 56% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated 17 September 2025.
Check out reviews from past customers who have flown with Alaska Airlines from Seattle to Las Vegas to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Las Vegas?

    If you book a flight from Seattle to Las Vegas, you will be flying from Seattle/Tacoma Intl to Harry Reid Intl. Flights to Las Vegas Harry Reid Intl (LAS) from Seattle/Tacoma Intl (SEA) take 2h 46m for a nonstop flight. There are 31 flights from Seattle/Tacoma Intl to Las Vegas per day from 1 airline.

  • How popular is this Seattle to Las Vegas flight route?

    This flight path from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl was viewed by 21 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Las Vegas?

    There are many flights that can get you from Seattle to Las Vegas in 2h 30m. Fly via Delta, Alaska Airlines, or Southwest to get the fastest option. Seattle and Las Vegas are separated by a distance of 866 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Seattle to Las Vegas round-trip?

    According to our current data, Alaska Airlines (£120), offers the cheapest pricing from Seattle to Las Vegas. Users have found that Alaska Airlines is 17% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Seattle to Las Vegas?

    Consider KLM (96%), Delta (92%) or Aeromexico (90%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Las Vegas.

  • What are the cheapest flights from Seattle to Las Vegas?

    While on average a flight from Seattle to Las Vegas is generally £72, our data shows the cheapest flight currently is £54. When looking at the most popular route, (Seattle/Tacoma Intl - Las Vegas Harry Reid Intl), you can expect to pay £114 for that flight.

  • Can I find deals for flights from Seattle to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Seattle to Las Vegas flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Las Vegas.

  • Can I find deals for business class flights from Seattle to Las Vegas?

    Yes. Cheapflights offers flight deals from Seattle to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Las Vegas (average of £689). Flying from Seattle to Las Vegas in July is currently the most expensive (average of £1,020). 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.

See more FAQs

Travelling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Kingman
Henderson
Paradise

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Alternative routes for Seattle to Las Vegas

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Las Vegas flights

Top airline flying from Seattle to Las Vegas

Discover the top airline that operate flights from Seattle to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£120Average£150FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Las Vegas?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to Las Vegas?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Las Vegas from Seattle.

Can Cheapflights find flights from Seattle to Las Vegas with no change fees?

Need flexible booking options for your flight to Las Vegas from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Las Vegas become cheaper?

Yes! Start tracking prices for Seattle to Las Vegas flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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