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Portsmouth

$508+ Cheap flights from Irvine, CA to Portsmouth, England

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Irvine to Portsmouth

Discover tips and strategies to find the most affordable flight options for your journey from Irvine (IR9) to Portsmouth (P0R). 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$814
(Delta)

One-way from

$508
(Delta)

Popular in

June

Cheapest in

February

Average price

$1,094
Provider with most accurate pricing for Los Angeles-London (LON) flight deals.
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From Irvine to Portsmouth
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One-way flight from Irvine to Portsmouth
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Highest demand for flights based on searches. 16% potential increase in price ($227 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Irvine to Portsmouth

Cheapest flights from Irvine to Portsmouth
Explore the most affordable flight options available from Irvine to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Delta deal was found by Cheapflights users on 1/30. 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 3/31:45 pmLAX - SOU
1 stop19h 05mDelta
Wed 3/125:20 pmSOU - LAX
1 stop26h 25mDelta
Deal found 1/30$814
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/167:45 amLAX - SOU
2 stops28h 55mMultiple Airlines
Sun 3/238:10 pmSOU - LAX
2 stops26h 36mMultiple Airlines
Deal found 1/29$821
This KLM deal was found by Cheapflights users on 1/29. 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.
Sun 3/162:45 pmLAX - SOU
1 stop34h 40mKLM
Sun 3/239:30 amSOU - LAX
1 stop34h 15mKLM
Deal found 1/29$862
This Virgin Atlantic deal was found by Cheapflights users on 1/28. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/511:30 amLAX - SOU
2 stops21h 30mVirgin Atlantic
Thu 5/229:20 amSOU - LAX
1 stop13h 30mVirgin Atlantic
Deal found 1/28$915
This Orbitz deal was found by Cheapflights users on 1/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/158:15 pmLAX - SOU
1 stop15h 15mAer Lingus
Sun 5/259:10 amSOU - LAX
1 stop17h 15mAer Lingus
Deal found 1/28$924
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:58 amLAX - SOU
2 stops28h 22mBritish Airways
Wed 10/89:10 amSOU - LAX
1 stop17h 15mBritish Airways
Deal found 1/28$2,317

Find flights from Irvine to Portsmouth within your budget

Customize your flight search to find flights from Irvine 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 3/3

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Wed 3/12

5:20 pm-12:45 pm

1 stop26h 25m

$814

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 3/16

7:45 am-7:40 pm

2 stops28h 55m

Southampton Eastleigh

Sun 3/23

8:10 pm-3:46 pm

2 stops26h 36m

$821

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 3/16

2:45 pm-8:25 am

1 stop34h 40m

Southampton Eastleigh

Sun 3/23

9:30 am-12:45 pm

1 stop34h 15m

$862

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 5/5

11:30 am-5:00 pm

2 stops21h 30m

Southampton Eastleigh

Thu 5/22

9:20 am-2:50 pm

1 stop13h 30m

$915

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 5/15

8:15 pm-7:30 pm

1 stop15h 15m

Southampton Eastleigh

Sun 5/25

9:10 am-6:25 pm

1 stop17h 15m

$924

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 3/2

1:45 pm-4:50 pm

1 stop19h 05m

$508

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 6/12

11:10 pm-3:45 pm

3 stops32h 35m

$522

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Fri 6/13

11:20 am-3:45 pm

2 stops20h 25m

$780

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Fri 6/13

4:50 pm-8:45 am

1 stop31h 55m

$999

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Best time to book a flight from Irvine to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Irvine 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.

Travel insights for flights from Irvine to Portsmouth

Get recent, data-driven insights about flights from Irvine to Portsmouth including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Irvine to Portsmouth (average of $661). Flying from Irvine to Portsmouth in June is currently the most expensive (average of $1,138). 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 IR9 to P0R?

Find hourly flight availability from Irvine 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 January 30, 2025.

When flying from Irvine 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 Irvine to Portsmouth?

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

Travelers seeking maximum savings on their Irvine to Portsmouth flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irvine to Portsmouth

Explore weekly flight availability from Irvine 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 January 30, 2025.

The most flights from IR9 to P0R are scheduled on a Wednesday (50 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (34 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 January 30, 2025.
Delta
8.0
Very good
8,454 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

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
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

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
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

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.

Virgin Atlantic
7.5
Good
657 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

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
7.1
Good
1,077 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

8.0

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 Irvine to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most reliable airlines from Irvine to Portsmouth?

    Before booking your flight to Portsmouth from Irvine, check out the most reliable airlines to get you to your destination on time: Air Canada (90%), Austrian Airlines (90%), United Airlines( 90%).

  • What are the cheapest flights from Irvine to Portsmouth?

    While on average a flight from Irvine to Portsmouth is generally $1,588, our data shows the cheapest flight currently is $403. When looking at the most popular route, (Los Angeles - Southampton Eastleigh), you can expect to pay $771 for that flight.

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

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

  • How can I find direct flights from Irvine to Portsmouth?

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

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

    Yes. Cheapflights offers flight deals from Irvine 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 Irvine to Portsmouth?

    Currently, November is the cheapest month in which you can book a flight from Irvine to Portsmouth (average of $661). Flying from Irvine to Portsmouth in June is currently the most expensive (average of $1,138). 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 Irvine to Portsmouth

Discover the top 10 airlines that operate flights from Irvine 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$369Average$933FlexibilityNo cancel feeOn-time60%
Norse Atlantic UKCheapest$378Average$686FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$419Average$604FlexibilityNo cancel feeOn-time77%
KLMCheapest$463Average$853FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$478Average$801FlexibilityNo cancel feeOn-time77%
DeltaCheapest$481Average$898FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$498Average$829FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$551Average$945FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$555Average$770FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$560Average$693FlexibilityNo cancel feeOn-timeN/A
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