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Cheap flights from Portsmouth to Las Vegas from £795

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAS
25 Apr — 2 May1
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 26 March 2026.

Wed 6/509:05
SOU
-
LAS
1 stop17h 30m
KLM
Wed 13/520:25
LAS
-
SOU
1 stop12h 25m
KLM
Deal found 22/3£795
Sun 7/609:20
SOU
-
LAS
2 stops23h 09m
Aer Lingus
Wed 10/616:24
LAS
-
SOU
2 stops19h 06m
Aer Lingus
Deal found 24/3£822
Tue 22/909:05
SOU
-
LAS
2 stops22h 57m
Delta
Mon 28/914:50
LAS
-
SOU
2 stops18h 00m
Delta
Deal found 23/3£850
Mon 13/420:00
SOU
-
LAS
2 stops31h 42m
Aer Lingus
Tue 21/406:00
LAS
-
SOU
2 stops29h 30m
Aer Lingus
Deal found 24/3£869
Sat 9/517:20
SOU
-
LAS
1 stop33h 15m
KLM
Sat 16/507:05
LAS
-
SOU
2 stops17h 40m
KLM
Deal found 25/3£879
Sun 7/609:15
SOU
-
LAS
3 stops45h 15m
Multiple Airlines
Wed 10/612:45
LAS
-
SOU
2 stops22h 45m
Multiple Airlines
Deal found 24/3£895
Sat 9/517:20
SOU
-
LAS
1 stop33h 15m
Virgin Atlantic
Sat 16/520:25
LAS
-
SOU
1 stop28h 10m
Virgin Atlantic
Deal found 25/3£921
Thu 3/1209:20
SOU
-
LAS
1 stop16h 30m
British Airways
Mon 7/1220:55
LAS
-
SOU
2 stops27h 30m
British Airways
Deal found 22/3£922

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 26 March 2026.

Round-trip from

£795

Popular in

August

Cheapest in

January

Average price

£612
KLM
  • KLM
  • 6/5-13/5
  • 2 total stops
  • 29h 55m total
  • Portsmouth to Las Vegas
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 26 March 2026.
Use the filters below to find and compare flights from Portsmouth to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 22/9

17:20-16:23

2 stops31h 03m

Las Vegas Harry Reid Intl

Thu 1/10

20:25-16:50

1 stop12h 25m

£850

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Tue 22/9

17:20-16:23

2 stops31h 03m

Las Vegas Harry Reid Intl

Sun 27/9

23:36-08:35

2 stops24h 59m

£850

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Mon 13/4

20:00-19:42

2 stops31h 42m

Las Vegas Harry Reid Intl

Tue 21/4

06:00-19:30

2 stops29h 30m

£869

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Sat 9/5

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Sat 16/5

07:05-08:45

2 stops17h 40m

£879

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Sat 9/5

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Sat 16/5

20:25-08:35

1 stop28h 10m

£921

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Mon 1/6

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Wed 10/6

20:25-16:50

1 stop12h 25m

£926

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Fri 22/5

17:20-18:35

1 stop33h 15m

Las Vegas Harry Reid Intl

Mon 25/5

20:25-08:35

1 stop28h 10m

£1,010
Fastest return journey

SouthamptonLas Vegas

SOU - LAS

SOULAS

Southampton Eastleigh

Fri 22/5

09:05-22:40

2 stops21h 35m

Las Vegas Harry Reid Intl

Mon 25/5

20:25-16:50

1 stop12h 25m

£1,010

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Sorted by cheapest first

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, July is the cheapest month in which you can book a flight from Portsmouth to Las Vegas (average of £350). Flying from Portsmouth to Las Vegas in August is currently the most expensive (average of £515). 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 26 March 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.

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. 18 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 31h 03m. 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 KLM (90%), Air France (90%) and Delta (90%).

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

    While on average a flight from Portsmouth to Las Vegas is generally £1,084, our data shows the cheapest flight currently is £482. When looking at the most popular route, (Southampton Eastleigh - Las Vegas Harry Reid Intl), you can expect to pay £822 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, July is the cheapest month in which you can book a flight from Portsmouth to Las Vegas (average of £350). Flying from Portsmouth to Las Vegas in August is currently the most expensive (average of £515). 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

Browse thousands of different options on Cheapflights for your next trip

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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 26 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£330Average£617FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Aer LingusCheapest£365Average£784FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapest£390Average£557FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapest£410Average£493FlexibilityNo cancel feeOn-time60%
Search WestJet flights
LufthansaCheapest£418Average£623FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£433Average£557FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest£435Average£577FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest£439Average£703FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£446Average£584FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£469Average£654FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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