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$943+ Cheap flights from Las Vegas (LAS) to Portsmouth, England

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Las Vegas to Portsmouth

Keep the following information in mind while searching for Las Vegas to Portsmouth flight deals. Data was last updated September 11, 2025.

Round-trip from

$943
(Virgin Atlantic)

Popular in

June

Cheapest in

January

Average price

$712
From Las Vegas Harry Reid Intl to Portsmouth
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($273 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Las Vegas to Portsmouth

Cheapest flights from Las Vegas to Portsmouth
Explore the most affordable flight options available from Las Vegas to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:00 amLAS - SOU
2 stops18h 05mAer Lingus
Sat 11/19:30 amSOU - LAS
2 stops20h 36mAer Lingus
Deal found 9/11$975
This KLM deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:25 pmLAS - SOU
1 stop28h 20mKLM
Sat 11/19:25 amSOU - LAS
2 stops19h 55mKLM
Deal found 9/11$981
This British Airways deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:55 pmLAS - SOU
2 stops28h 15mBritish Airways
Tue 12/3012:25 pmSOU - LAS
1 stop13h 25mBritish Airways
Deal found 9/10$2,357

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to Portsmouth 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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Las Vegas to Portsmouth that are best for you.

Fly from

Las Vegas

Fly to

Portsmouth

Route

Depart

Return

Price

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Thu 3/5

6:00 am-8:50 am

2 stops42h 50m

Southampton Eastleigh

Mon 3/9

5:30 pm-3:15 pm

1 stop28h 45m

$943

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Tue 10/21

6:00 am-8:05 am

2 stops18h 05m

Southampton Eastleigh

Sat 11/1

9:30 am-11:06 pm

2 stops20h 36m

$975

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Tue 10/21

8:25 pm-8:45 am

1 stop28h 20m

Southampton Eastleigh

Sat 11/1

9:25 am-10:20 pm

2 stops19h 55m

$981

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Thu 12/11

8:55 pm-9:10 am

2 stops28h 15m

Southampton Eastleigh

Tue 12/30

12:25 pm-5:50 pm

1 stop13h 25m

$2,357

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Las Vegas to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Las Vegas with our price prediction graph.
Estimated round-trip 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 Las Vegas to Portsmouth

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

Currently, November is the cheapest month in which you can book a flight from Las Vegas to Portsmouth (average of $661). Flying from Las Vegas to Portsmouth in June is currently the most expensive (average of $1,098). 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 LAS to P0R?

Find hourly flight availability from Las Vegas to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Las Vegas to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Las Vegas to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Las Vegas to Portsmouth. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Las Vegas to Portsmouth flight should consider departing on Monday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Las Vegas to Portsmouth

Explore weekly flight availability from Las Vegas to Portsmouth. 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 September 11, 2025.

The most flights from LAS to P0R are scheduled on a Wednesday (12 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Delta from Las Vegas to Portsmouth 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.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Portsmouth. 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 from for flights from Las Vegas to Portsmouth?

    Las Vegas Harry Reid Intl (LAS) is the airport you will fly out of if you book a flight from Las Vegas to Portsmouth. You should not have trouble finding flights to Portsmouth from Harry Reid Intl; the airport handles an average of 0 outbound flights to Portsmouth per day. You should also have plenty of airline options to choose from since 10 airlines have flights from the Las Vegas airport to Portsmouth. It is only a 6.2 mi journey to Harry Reid Intl (LAS) from Las Vegas’s city center.

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

    Airlines like Virgin Atlantic and Aer Lingus fly from Las Vegas to Portsmouth in about 18h 05m. The time it takes to get you to your destination can typically vary by up to 24h 45m. The distance between Las Vegas and Portsmouth is about 5206 mi. This flight may include one or multiple stops.

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

    Before booking your flight to Portsmouth from Las Vegas, check out the most reliable airlines to get you to your destination on time: Aeromexico (85%), American Airlines (85%), Aer Lingus( 85%).

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

    While on average a flight from Las Vegas to Portsmouth is generally $1,219, our data shows the cheapest flight currently is $347. When looking at the most popular route, (Las Vegas Harry Reid Intl - Southampton Eastleigh), you can expect to pay $894 for that flight.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Las Vegas to Portsmouth (average of $661). Flying from Las Vegas to Portsmouth in June is currently the most expensive (average of $1,098). 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

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Top 10 airlines flying from Las Vegas to Portsmouth

Discover the top 10 airlines that operate flights from Las Vegas to Portsmouth. 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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest$376Average$464FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$502Average$698FlexibilityNo cancel feeOn-time67%
Virgin AtlanticCheapest$542Average$996FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$549Average$833FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$580Average$704FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$590Average$914FlexibilityNo cancel feeOn-time71%
IberiaCheapest$610Average$1,051FlexibilityNo cancel feeOn-time77%
DeltaCheapest$614Average$1,025FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$750Average$1,090FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$962Average$1,310FlexibilityNo cancel feeOn-timeN/A

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