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Cheap flights from Portsmouth to Riverside

LHR — LAX
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Portsmouth to Riverside

Popular in

December

Cheapest in

February

Average price

£494
Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in October 2026
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Cheapflights Insights

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

What is the cheapest time of day to fly from P0R to R1V?

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

Related info for your journey

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

    The top 3 most reliable airlines when flying from Portsmouth to Riverside are Malaysia Airlines (95%), SriLankan Airlines (94%) and Fiji Airways (83%).

  • What are the cheapest flights from Portsmouth to Riverside?

    While on average a flight from Portsmouth to Riverside is generally £2,457, our data shows the cheapest flight currently is £342. When looking at the most popular route, (Southampton Eastleigh - Los Angeles), you can expect to pay £471 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Riverside by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Alternative routes for Portsmouth to Riverside

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Top 10 airlines flying from Portsmouth to Riverside

AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£231Average£436FlexibilityNo cancel feeOn-timeN/A
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United AirlinesCheapest£306Average£522FlexibilityNo cancel feeOn-time69%
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SWISSCheapest£341Average£556FlexibilityNo cancel feeOn-time79%
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Virgin AtlanticCheapest£341Average£491FlexibilityNo cancel feeOn-time72%
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Austrian AirlinesCheapest£352Average£491FlexibilityNo cancel feeOn-time78%
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Scandinavian AirlinesCheapest£354Average£491FlexibilityNo cancel feeOn-time77%
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Brussels AirlinesCheapest£355Average£506FlexibilityNo cancel feeOn-timeN/A
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Air CanadaCheapest£361Average£495FlexibilityNo cancel feeOn-time67%
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British AirwaysCheapest£363Average£530FlexibilityNo cancel feeOn-time70%
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KLMCheapest£366Average£588FlexibilityNo cancel feeOn-time75%
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Fly with Cheapflights

How does Cheapflights help users find flights from Portsmouth to Riverside?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portsmouth to Riverside. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Riverside?

Cheapflights helps you find that perfect flight to Riverside from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portsmouth to Riverside with no change fees?

Yes, we can. To see specific flights from Portsmouth to Riverside with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portsmouth to Riverside become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Riverside from Portsmouth today and book when prices fit your budget.

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