HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$486+ Cheap flights from Riverside, 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Riverside 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 Riverside to Portsmouth

Discover tips and strategies to find the most affordable flight options for your journey from Riverside (R1V) 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 December 23, 2024.

Round-trip from

$802
(Booking.com)

One-way from

$767
(British Airways)

Popular in

June

Cheapest in

February

Average price

$1,365
From Riverside to Portsmouth
Search Deals
One-way flight from Riverside to Portsmouth
Search Deals
High demand for flights, 14% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Riverside to Portsmouth

Cheapest flights from Riverside to Portsmouth
Explore the most affordable flight options available from Riverside to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2024.

This British Airways deal was found by Cheapflights users on 12/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:55 pmLAX - SOU
2 stops17h 30mBritish Airways
Thu 1/27:55 pmSOU - LAX
2 stops30h 30mBritish Airways
Deal found 12/22$3,524

Find flights from Riverside to Portsmouth within your budget

Customize your flight search to find flights from Riverside 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 December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 2/5

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Wed 2/12

5:20 pm-11:45 am

1 stop26h 25m

$802

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 2/5

1:45 pm-8:25 am

1 stop34h 40m

Southampton Eastleigh

Wed 2/12

9:00 am-11:45 am

1 stop34h 45m

$813

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 1/12

5:55 pm-7:25 pm

2 stops17h 30m

Southampton Eastleigh

Fri 2/14

8:40 am-6:25 pm

2 stops17h 45m

$1,043

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 2/5

7:45 am-7:40 pm

3 stops27h 55m

Southampton Eastleigh

Wed 2/12

8:40 am-6:30 pm

2 stops17h 50m

$1,996

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 5/20

7:00 am-7:30 pm

3 stops28h 30m

$486

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 1/28

3:35 pm-4:00 pm

2 stops16h 25m

$631

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 5/19

12:45 am-8:50 am

2 stops24h 05m

$1,070

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 1/8

8:15 pm-7:40 pm

1 stop15h 25m

$5,652

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Best time to book a flight from Riverside to Portsmouth

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

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

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

Currently, November is the cheapest month in which you can book a flight from Riverside to Portsmouth (average of $661). Flying from Riverside to Portsmouth in June is currently the most expensive (average of $1,135). 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 R1V to P0R?

Find hourly flight availability from Riverside 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 December 23, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Riverside to Portsmouth as you normally would.

What is the cheapest day to fly from Riverside to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Portsmouth. Price data was last updated on January 28, 2024.

Travelers seeking maximum savings on their Riverside 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 Riverside to Portsmouth

Explore weekly flight availability from Riverside 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 December 23, 2024.

The most flights from R1V to P0R are scheduled on a Monday (54 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (38 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 December 23, 2024.
Read reviews from past customers who have flown KLM and British Airways from Riverside to Portsmouth. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,345 reviews

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,345 reviews
KLM
7.8
Good
1,345 reviews

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Virgin Atlantic
7.5
Good
667 reviews
KLM
7.8
Good
1,345 reviews

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Aer Lingus
7.1
Good
1,076 reviews
KLM
7.8
Good
1,345 reviews

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

British Airways
6.6
Okay
6,810 reviews
KLM
7.8
Good
1,345 reviews

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

Find useful and relevant information for your journey from Riverside 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 Riverside to Portsmouth?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Riverside to Portsmouth on time: Air Canada (90%), Austrian Airlines (90%), United Airlines (90%).

  • What are the cheapest flights from Riverside to Portsmouth?

    On average you can expect to pay $1,745 for a flight from Riverside to Portsmouth. The cheapest flight overall is $397 while the most popular route, (Los Angeles - Southampton Eastleigh) is currently priced at $813.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Riverside to Portsmouth (average of $661). Flying from Riverside to Portsmouth in June is currently the most expensive (average of $1,135). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Riverside to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Gatwick flights
Los Angeles to London City flights
San Francisco to Gatwick flights
San Francisco to London City flights
San Diego to Heathrow flights
Ontario to Heathrow flights
Las Vegas to Heathrow flights
Los Angeles to Luton flights
San Diego to Gatwick flights
Los Angeles to Stansted flights
San Diego to London City flights
San Jose to Heathrow flights
Las Vegas to London City flights
Santa Ana to Heathrow flights
San Francisco to Edinburgh flights
Las Vegas to Gatwick flights
Los Angeles to Edinburgh flights
Oakland to Heathrow flights
San Francisco to Stansted flights
Sacramento to Heathrow flights
San Diego to Edinburgh flights
San Francisco to Luton flights
Burbank to Heathrow flights
San Jose to Gatwick flights
Los Angeles to Manchester flights
Los Angeles to Southend flights
Sacramento to Gatwick flights
Ontario to Gatwick flights
Los Angeles to Southampton flights
Oakland to Gatwick flights
Reno to Heathrow flights
Los Angeles to Birmingham flights
Santa Ana to Gatwick flights
San Jose to Edinburgh flights
San Francisco to Manchester flights
Santa Rosa to Heathrow flights
Sacramento to London City flights
San Francisco to Birmingham flights
Fresno to Heathrow flights
Santa Ana to Manchester flights
San Francisco to Southampton flights
Ontario to Manchester flights
San Jose to London City flights
Ontario to Edinburgh flights
Reno to Gatwick flights
San Diego to Manchester flights
Fresno to Gatwick flights
Oakland to Edinburgh flights

Top 10 airlines flying from Riverside to Portsmouth

Discover the top 10 airlines that operate flights from Riverside 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 December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest$382Average$674FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$424Average$608FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$425Average$804FlexibilityNo cancel feeOn-time72%
KLMCheapest$463Average$904FlexibilityNo cancel feeOn-time75%
DeltaCheapest$481Average$901FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$538Average$790FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$547Average$874FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$549Average$759FlexibilityNo cancel feeOn-time76%
FinnairCheapest$552Average$743FlexibilityNo cancel feeOn-time76%
WestJetCheapest$555Average$807FlexibilityNo cancel feeOn-time60%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.