$417+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Irvine to Portsmouth with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Irvine to Portsmouth
Keep the following information in mind while searching for Irvine to Portsmouth flight deals. Data was last updated April 24, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $932 (Delta) |
One-way from | $511 (Delta) |
Popular in | June |
Cheapest in | February |
Average price | $860 |
Find flight deals from Irvine to Portsmouth
Cheapest flights from Irvine to PortsmouthExplore 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 April 24, 2025.
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 April 24, 2025.
This Delta deal was found by Cheapflights users on 4/22. 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.
This KLM deal was found by Cheapflights users on 4/22. 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.
This Mytrip deal was found by Cheapflights users on 4/22. 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.
This FlightHub deal was found by Cheapflights users on 4/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This lastminute.com deal was found by Cheapflights users on 4/23. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 4/23. 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.
Cheapflights Fare Finder
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 April 24, 2025.
Use the filters below to find and compare flights from Irvine to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Wed 5/7
4:50 pm-5:00 pm
1 stop16h 10m
Southampton Eastleigh
Thu 5/22
9:20 am-2:50 pm
1 stop13h 30m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Wed 5/7
4:50 pm-5:00 pm
1 stop16h 10m
Southampton Eastleigh
Mon 5/12
5:35 pm-2:50 pm
1 stop29h 15m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Tue 5/6
12:55 am-4:35 pm
2 stops31h 40m
Southampton Eastleigh
Thu 5/22
9:40 am-6:25 pm
1 stop16h 45m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Sat 6/7
7:30 am-8:45 am
3 stops41h 15m
Southampton Eastleigh
Sat 6/14
9:20 am-1:05 pm
3 stops35h 45m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Sat 6/7
4:45 pm-5:50 pm
1 stop17h 05m
Southampton Eastleigh
Sat 6/14
9:20 am-2:50 pm
1 stop13h 30m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Tue 5/6
5:05 pm-7:25 pm
2 stops18h 20m
Southampton Eastleigh
Tue 5/13
9:10 am-6:25 pm
1 stop17h 15m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Wed 6/4
6:05 pm-7:30 pm
3 stops41h 25m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Wed 5/7
4:50 pm-5:00 pm
1 stop16h 10m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Sun 5/4
1:50 pm-8:50 am
1 stop35h 00m
Los AngelesSouthampton
LAX - SOU
LAXSOU
Los Angeles
Wed 6/4
8:15 pm-7:30 pm
1 stop15h 15m
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.
Cheapflights Insights
Everything you need to know about your flight from Irvine to Portsmouth
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 $1,110). 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 April 24, 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 April 24, 2025.
The most flights from IR9 to P0R are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 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 April 24, 2025.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Aaron,Oct 2024
LAX - LHR
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.
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Alternative routes for Irvine to Portsmouth
See prices for flight routes from nearby airports that may be better suited for you.
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 April 24, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$933 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$384 | Average$674 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$414 | Average$602 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$418 | Average$896 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$447 | Average$646 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$454 | Average$817 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$463 | Average$952 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$509 | Average$675 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$533 | Average$933 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$551 | Average$888 | FlexibilityNo cancel fee | On-timeN/A |