£228 Find Cheap Flights from Portsmouth to Riverside

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portsmouth to Riverside departing on 13/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flight Deals from Portsmouth to Riverside

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portsmouth to Riverside that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Portsmouth to Riverside

KAYAK's recommended return flight deals from the most popular airlines that fly from Portsmouth to Riverside.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
09:20 - 14:50SOU-LAX
13h 30m1 stop
Delta Logo
00:50 - 08:45LAX-SOU
23h 55m2 stops
£503Delta
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Sat, 14 Jun - Fri, 20 Jun
KLM Logo
09:20 - 14:50SOU-LAX
13h 30m1 stop
KLM Logo
13:50 - 08:45LAX-SOU
34h 55m1 stop
£521KLM
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Delta Logo
09:20 - 14:50SOU-LAX
13h 30m1 stop
Delta Logo
13:50 - 17:30LAX-SOU
19h 40m1 stop
£533Delta
Find Deal
Mon, 26 May - Fri, 6 Jun
Delta Logo
17:35 - 11:50SOU-LAX
26h 15m1 stop
Delta Logo
13:50 - 08:45LAX-SOU
34h 55m1 stop
£548Delta
Find Deal
Mon, 26 May - Thu, 5 Jun
Delta Logo
09:20 - 22:48SOU-LAX
21h 28m2 stops
Delta Logo
13:51 - 17:00LAX-SOU
19h 09m2 stops
£552Delta
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Sat, 31 May - Tue, 3 Jun
Delta Logo
09:20 - 20:30SOU-LAX
19h 10m2 stops
Delta Logo
10:45 - 17:50LAX-SOU
23h 05m2 stops
£662Delta
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Delta Logo
18:25 - 14:50SOU-LAX
28h 25m1 stop
Delta Logo
14:29 - 17:50LAX-SOU
19h 21m2 stops
£668Delta
Find Deal
Wed, 2 Jul - Sun, 20 Jul
Delta Logo
18:25 - 16:21SOU-LAX
29h 56m2 stops
Delta Logo
12:55 - 17:00LAX-SOU
20h 05m2 stops
£673Delta
Find Deal
Wed, 2 Jul - Fri, 25 Jul
Delta Logo
18:25 - 14:50SOU-LAX
28h 25m1 stop
Delta Logo
06:00 - 08:45LAX-SOU
18h 45m2 stops
£697Delta
Find Deal
Wed, 2 Jul - Thu, 24 Jul
 Logo
09:40 - 20:59SOU-LAX
43h 19m3 stops
 Logo
11:50 - 19:25LAX-SOU
23h 35m2 stops
£1,057
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Useful Info

Good to know - Cheap tickets from Portsmouth to Riverside

Low seasonMarch
High seasonAugust
Cheapest flight£228
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (21% more expensive on average)
Flight from Southampton to Los Angeles

When to book flights from Portsmouth to Riverside

Are your dates flexible? Find out the best times to travel from Portsmouth to Riverside based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs - booking Riverside flights

  • How long is the flight to Riverside?

    Flights from London10h 53m
  • What is the cheapest flight to Los Angeles?

    In the last 3 days, the cheapest flight deal to Los Angeles was found on the route from Southampton, at £376 return. The most popular connection is from London to Los Angeles and KAYAK users have found return deals for as low as £355 in the last 3 days.

  • Which airlines fly to Los Angeles?

    Many airlines fly to Los Angeles, the most common ones being Virgin Atlantic, British Airways, and American Airlines. See the amount of flights per week for popular airlines flying to Los Angeles.

  • How to fly to Riverside?

    You cannot fly directly to Riverside. KAYAK recommends you fly to Los Angeles (LAX) (59.3 miles from Riverside). From there you can hire a car or take a taxi.

  • What airports are near Riverside?

    The closest airport is San Bernardino Int (SBD) (11.49 mi). Other nearby airports are Ontario (ONT) (14.03 mi) or Victorville Southern California Logistics (VCV) (42.25 mi). KAYAK recommends you fly to Los Angeles.

  • How far is Los Angeles Airport from central Los Angeles?

    Central Los Angeles is 9 miles away from Los Angeles Airport.

  • What is the name of Los Angeles’s airport?

    There is only 1 airport in Los Angeles, called Los Angeles Airport (LAX). It can also be referred to as Los Angeles or Los Angeles Intl.

  • How does KAYAK find such low prices on flights to Riverside?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Riverside.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Riverside?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Riverside is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Riverside?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Riverside with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Riverside?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Riverside up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Riverside

  • There is no major airport in Riverside. It is instead served by Los Angeles Airport.
  • Looking for cheap airfare to Riverside? 25% of our users found round-trip tickets to Riverside for the following prices or less: Cheap flights to Riverside from Barcelona-El Prat £295
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Riverside flight deals.

Top airlines flying from Portsmouth to Riverside

Need help choosing which airline to fly with from Portsmouth to Riverside? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1334 reviews
7.7Comfort
8.4Crew
7.1Entertainment
7.2Food
7.8Boarding
Airline reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

8.0 ExcellentShereen, Apr 2025AMS - YUL
Read more KLM reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

Boarding is a mess. They never check group # so lots of people crowding in. Comfortable seats this flight. I had an empty seat next to me, very convenient. Food was really not good, but I was starved. The pizza snack thing was horrible. Crew was grand. They really make it enjoyable.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

Everything you need to know for your flight from Portsmouth to Riverside

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