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$901+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — LHR
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$901
(Delta)

Popular in

June

Cheapest in

January

Average price

$983
Provider with most accurate pricing for Las Vegas Harry Reid Intl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-London (LON) flights.
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From Las Vegas Harry Reid Intl to Portsmouth
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Highest demand for flights based on searches. 27% potential increase in price ($298 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:25 pmLAS - SOU
1 stop28h 20mDelta
Tue 10/289:00 amSOU - LAS
1 stop13h 10mDelta
Deal found 4/30$901
This KLM deal was found by Cheapflights users on 4/30. 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.
Fri 8/292:50 pmLAS - SOU
2 stops18h 40mKLM
Wed 9/179:20 amSOU - LAS
2 stops17h 53mKLM
Deal found 4/30$1,035
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2812:59 amLAS - SOU
2 stops47h 36mAer Lingus
Wed 9/179:10 amSOU - LAS
2 stops18h 30mAer Lingus
Deal found 4/30$1,154
This StudentUniverse deal was found by Cheapflights users on 5/1. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:00 amLAS - SOU
3 stops22h 20mMultiple Airlines
Fri 9/269:40 amSOU - LAS
2 stops20h 55mMultiple Airlines
Deal found 5/1$1,333

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 May 1, 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

Mon 10/20

8:25 pm-8:45 am

1 stop28h 20m

Southampton Eastleigh

Thu 10/30

9:00 am-3:10 pm

1 stop13h 10m

$901

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Fri 8/29

2:50 pm-5:30 pm

2 stops18h 40m

Southampton Eastleigh

Wed 9/17

9:20 am-7:13 pm

2 stops17h 53m

$1,035

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Thu 8/28

12:59 am-8:35 am

2 stops47h 36m

Southampton Eastleigh

Wed 9/17

9:10 am-7:40 pm

2 stops18h 30m

$1,154

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Fri 9/12

7:00 am-1:20 pm

3 stops22h 20m

Southampton Eastleigh

Fri 9/26

9:40 am-10:35 pm

2 stops20h 55m

$1,333

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Thu 6/19

8:25 pm-8:45 am

1 stop28h 20m

$1,005

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $1,103). 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 May 1, 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 May 1, 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 (8 on average).

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Portsmouth when rainfall is around 1.0 in.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

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 May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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: Singapore Airlines (84%), American Airlines (83%), Aer Lingus( 83%).

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

    While on average a flight from Las Vegas to Portsmouth is generally $1,651, our data shows the cheapest flight currently is $395. When looking at the most popular route, (Las Vegas Harry Reid Intl - Southampton Eastleigh), you can expect to pay $915 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 $1,103). 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

Browse thousands of different options on Cheapflights for your next trip

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest$334Average$449FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$502Average$675FlexibilityNo cancel feeOn-time67%
Virgin AtlanticCheapest$543Average$1,002FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$558Average$777FlexibilityNo cancel feeOn-time71%
IberiaCheapest$559Average$753FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$572Average$865FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$580Average$716FlexibilityNo cancel feeOn-time69%
DeltaCheapest$598Average$939FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$750Average$965FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$880Average$1,270FlexibilityNo cancel feeOn-timeN/A

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