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Cheap flights from Portsmouth to Las Vegas from £681

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAS
10 Mar — 17 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Las Vegas

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Las Vegas
Explore the most affordable flight options available from Portsmouth to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 February 2026.

Tue 24/312:25
SOU
-
LAS
1 stop13h 25m
Aer Lingus
Tue 31/319:15
LAS
-
SOU
1 stop16h 15m
Aer Lingus
Deal found 7/2£681
Tue 24/312:25
SOU
-
LAS
1 stop13h 25m
Multiple Airlines
Tue 31/319:15
LAS
-
SOU
2 stops29h 20m
Multiple Airlines
Deal found 7/2£772
Mon 23/317:40
SOU
-
LAS
2 stops30h 58m
KLM
Mon 30/307:00
LAS
-
SOU
2 stops17h 35m
KLM
Deal found 6/2£779
Tue 31/317:20
SOU
-
LAS
1 stop33h 15m
Delta
Mon 6/409:25
LAS
-
SOU
2 stops15h 10m
Delta
Deal found 6/2£843
Mon 30/317:20
SOU
-
LAS
1 stop33h 15m
Delta
Sun 5/400:55
LAS
-
SOU
2 stops23h 40m
Delta
Deal found 6/2£844
Tue 31/317:20
SOU
-
LAS
2 stops31h 31m
Delta
Sun 5/423:35
LAS
-
SOU
2 stops25h 00m
Delta
Deal found 6/2£847
Mon 30/317:20
SOU
-
LAS
2 stops30h 29m
Delta
Sun 5/421:45
LAS
-
SOU
2 stops26h 50m
Delta
Deal found 6/2£848
Wed 1/409:05
SOU
-
LAS
2 stops19h 19m
Delta
Sun 5/422:20
LAS
-
SOU
2 stops26h 15m
Delta
Deal found 6/2£859
Sun 17/517:20
SOU
-
LAS
1 stop33h 15m
Delta
Tue 16/620:25
LAS
-
SOU
1 stop12h 25m
Delta
Deal found 5/2£862
Tue 31/317:20
SOU
-
LAS
1 stop33h 15m
Delta
Sat 4/423:00
LAS
-
SOU
2 stops25h 35m
Delta
Deal found 6/2£873

Find flight deals from Portsmouth to Las Vegas

Keep the following information in mind while searching for Portsmouth to Las Vegas flight deals. Data was last updated 8 February 2026.

Round-trip from

£681

Popular in

July

Cheapest in

February

Average price

£521
Aer Lingus
  • Aer Lingus
  • 24/3-31/3
  • 2 total stops
  • 29h 40m total
  • Portsmouth to Las Vegas
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth 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 8 February 2026.
Use the filters below to find and compare flights from Portsmouth to Las Vegas that are best for you.

Fly from

Portsmouth

Fly to

Las Vegas

Route

Depart

Return

Price

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 24/3

12:25-18:50

1 stop13h 25m

Las Vegas Harry Reid Intl

Tue 31/3

19:15-19:30

1 stop16h 15m

£681

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 24/3

12:25-18:50

1 stop13h 25m

Las Vegas Harry Reid Intl

Tue 31/3

19:15-08:35

2 stops29h 20m

£772

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 24/3

17:35-15:49

2 stops29h 14m

Las Vegas Harry Reid Intl

Tue 31/3

13:59-16:50

2 stops18h 51m

£779

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Mon 23/3

17:40-15:15

1 stop28h 35m

Las Vegas Harry Reid Intl

Mon 30/3

14:00-16:50

2 stops18h 50m

£814

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 31/3

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Sun 5/4

23:00-08:35

2 stops25h 35m

£843

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Mon 30/3

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Sun 5/4

23:35-08:35

2 stops25h 00m

£844

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Mon 30/3

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Sun 5/4

00:55-08:35

2 stops23h 40m

£844

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 31/3

17:20-16:51

2 stops31h 31m

Las Vegas Harry Reid Intl

Mon 6/4

11:00-16:50

2 stops21h 50m

£847

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Wed 1/4

09:05-20:24

2 stops19h 19m

Las Vegas Harry Reid Intl

Sun 5/4

23:35-08:35

2 stops25h 00m

£859

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Wed 20/5

09:05-18:35

1 stop17h 30m

Las Vegas Harry Reid Intl

Tue 16/6

20:25-08:35

1 stop28h 10m

£862

Flights are sorted by cheapest return flights first.

Deals found on 5/2

Showing 1-10 of 11 results
1
2

Best time to book a flight from Portsmouth to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Portsmouth 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 Portsmouth to Las Vegas

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

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Las Vegas (average of £304). Flying from Portsmouth to Las Vegas in August is currently the most expensive (average of £512). 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 P0R to LAS?

Find hourly flight availability from Portsmouth 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 8 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Las Vegas as you normally would.

Weekly flight availability from Portsmouth to Las Vegas

Explore weekly flight availability from Portsmouth to Las Vegas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 8 February 2026.

The most flights from P0R to LAS are scheduled on a Wednesday (12 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

Find useful and relevant information for your journey from Portsmouth 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 airport do you fly into for flights to Las Vegas from Portsmouth?

    Las Vegas Harry Reid Intl (LAS), located 6.2 mi from the city center, is the airport you fly into when you book flights from Portsmouth to Las Vegas. 19 airlines have flights to Harry Reid Intl from Portsmouth on a regular basis. Booking flights from Portsmouth to Las Vegas Harry Reid Intl should not be difficult; the airport handles an average of 0 inbound flights from Portsmouth per day.

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

    Departing from Portsmouth to Las Vegas will take you 13h 25m. The distance between Portsmouth and Las Vegas is about 5206 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The top 3 most reliable airlines when flying from Portsmouth to Las Vegas are Aer Lingus (85%), American Airlines (79%) and British Airways (79%).

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

    While on average a flight from Portsmouth to Las Vegas is generally £1,360, our data shows the cheapest flight currently is £403. When looking at the most popular route, (Southampton Eastleigh - Las Vegas Harry Reid Intl), you can expect to pay £862 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth 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 Portsmouth to Las Vegas?

    Currently, March is the cheapest month in which you can book a flight from Portsmouth to Las Vegas (average of £304). Flying from Portsmouth to Las Vegas in August is currently the most expensive (average of £512). 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
Furnace Creek
Henderson
Kingman

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Top 10 airlines flying from Portsmouth to Las Vegas

Discover the top 10 airlines that operate flights from Portsmouth 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 8 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£298Average£676FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Norse Atlantic UKCheapest£320Average£394FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Air TransatCheapest£325Average£572FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£348Average£548FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Aer LingusCheapest£359Average£727FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£417Average£615FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£426Average£507FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest£428Average£570FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest£432Average£669FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£438Average£584FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Portsmouth to Las Vegas via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Las Vegas from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Las Vegas, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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