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675 € Cheap Flights from Porto to San Diego International

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      Travellers and cabin class, 1 Adult, Economy

      Compare Porto to San Diego International flight deals

      Find the cheapest month or even day of the year to fly to San Diego International

      Book the best San Diego International fare with no extra fees

      Flight deals from Porto to San Diego International

      Looking for a cheap last-minute deal or the best return flight from Porto Airport to San Diego International Airport? If you want to travel next month, return fares start from 675 €. Find the lowest prices on one-way and return tickets right here.
      San Diego.675 € per passenger.Departing Mon, 12 Oct, returning Mon, 19 Oct.Return flight with Wizz Air Malta and Alaska Airlines.Outbound indirect flight with Wizz Air Malta, departs from Porto on Mon, 12 Oct, arriving in San Diego International.Inbound indirect flight with Alaska Airlines, departs from San Diego International on Mon, 19 Oct, arriving in Porto.Price includes taxes and charges.From 675 €, select.
      San Diego.714 € per passenger.Departing Thu, 12 Nov, returning Sat, 21 Nov.Return flight with easyJet and WestJet.Outbound indirect flight with easyJet, departs from Porto on Thu, 12 Nov, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Sat, 21 Nov, arriving in Porto.Price includes taxes and charges.From 714 €, select.
      San Diego.716 € per passenger.Departing Mon, 23 Nov, returning Thu, 7 Jan.Return flight with Ryanair and jetBlue.Outbound indirect flight with Ryanair, departs from Porto on Mon, 23 Nov, arriving in San Diego International.Inbound indirect flight with jetBlue, departs from San Diego International on Thu, 7 Jan, arriving in Porto.Price includes taxes and charges.From 716 €, select.
      San Diego.722 € per passenger.Departing Fri, 4 Dec, returning Sat, 12 Dec.Return flight with Ryanair and Air France.Outbound indirect flight with Ryanair, departs from Porto on Fri, 4 Dec, arriving in San Diego International.Inbound indirect flight with Air France, departs from San Diego International on Sat, 12 Dec, arriving in Porto.Price includes taxes and charges.From 722 €, select.
      San Diego.739 € per passenger.Departing Tue, 15 Dec, returning Wed, 13 Jan.Return flight with Ryanair and jetBlue.Outbound indirect flight with Ryanair, departs from Porto on Tue, 15 Dec, arriving in San Diego International.Inbound indirect flight with jetBlue, departs from San Diego International on Wed, 13 Jan, arriving in Porto.Price includes taxes and charges.From 739 €, select.
      San Diego.767 € per passenger.Departing Tue, 2 Feb, returning Tue, 2 Mar.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Porto on Tue, 2 Feb, arriving in San Diego International.Inbound indirect flight with Air France, departs from San Diego International on Tue, 2 Mar, arriving in Porto.Price includes taxes and charges.From 767 €, select.
      San Diego.767 € per passenger.Departing Thu, 20 May, returning Mon, 24 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Thu, 20 May, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Mon, 24 May, arriving in Porto.Price includes taxes and charges.From 767 €, select.
      San Diego.771 € per passenger.Departing Sun, 24 Jan, returning Sat, 30 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Sun, 24 Jan, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 30 Jan, arriving in Porto.Price includes taxes and charges.From 771 €, select.
      San Diego.777 € per passenger.Departing Sat, 20 Mar, returning Wed, 24 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Sat, 20 Mar, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 24 Mar, arriving in Porto.Price includes taxes and charges.From 777 €, select.
      San Diego.786 € per passenger.Departing Thu, 1 Apr, returning Thu, 15 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Thu, 1 Apr, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Thu, 15 Apr, arriving in Porto.Price includes taxes and charges.From 786 €, select.
      San Diego.808 € per passenger.Departing Fri, 30 Oct, returning Tue, 3 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Fri, 30 Oct, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 3 Nov, arriving in Porto.Price includes taxes and charges.From 808 €, select.
      San Diego.822 € per passenger.Departing Sat, 28 Nov, returning Mon, 7 Dec.Return flight with Iberia and Lufthansa.Outbound indirect flight with Iberia, departs from Porto on Sat, 28 Nov, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Mon, 7 Dec, arriving in Porto.Price includes taxes and charges.From 822 €, select.
      San Diego.928 € per passenger.Departing Mon, 12 Jul, returning Mon, 26 Jul.Return flight with easyJet and Lufthansa.Outbound indirect flight with easyJet, departs from Porto on Mon, 12 Jul, arriving in San Diego International.Inbound indirect flight with Lufthansa, departs from San Diego International on Mon, 26 Jul, arriving in Porto.Price includes taxes and charges.From 928 €, select.

      Find the cheapest month to fly from Porto to San Diego International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to San Diego International flights are currently cheapest in October.
      Sep
      Find prices
      Oct
      from 675 €
      Nov
      from 714 €
      Dec
      from 722 €
      Jan
      from 771 €
      Feb
      Find prices
      Mar
      from 777 €
      Apr
      from 786 €
      May
      from 767 €
      Jun
      Find prices
      Jul
      from 928 €
      Aug
      Find prices

      Porto to San Diego International: Alternative routes

      Compare routes from Porto to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

      San Diego International

      4km from central San Diego
      ClosestCheapest
      from 675 €
      Search flights

      McClellan-Palomar

      48km from central San Diego
      Search flights

      Porto to San Diego: Flight information

      The things to know before you go.
      Cheapest flight found675 €
      Cheapest month to flyOctober

      Finding cheap flights from Porto to San Diego International: Frequently asked questions

      The best price we found for a return flight from Porto to San Diego International is 675 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Porto to San Diego International. But we found flights with one or more stops from 675 €.
      As of September 2026, there are no flights flying from Porto to San Diego International.
      The cheapest month to fly from Porto to San Diego International is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to San Diego International Airport on Monday, 12 October 2026.
      No airlines currently offer direct flights between Porto Airport and San Diego International Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Wizz Air Malta offers the cheapest flight tickets to San Diego International.

      Travelling from Porto Airport (OPO) to San Diego International Airport (SAN): what you need to know

      • The timezone in San Diego is UTC-8, which is eight hours behind Porto.

      • Your OPO to SAN flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

      • Flying during a peak month like August? Major public holidays and other popular seasons can lead to longer lines at airport checkpoints. Play it safe and get there up to four hours before international flights and two hours before a domestic departure.

      • If you want to include a stop along the way, just uncheck 'Direct flights only' when searching for your ticket from Porto Airport to San Diego International Airport. Here are the top stopovers between OPO and SAN:

        • New York Newark Airport

        • Toronto Pearson International Airport

        • Munich Airport

      How to find the cheapest flights from Porto Airport (OPO) to San Diego International Airport (SAN)

      • The cheapest price we've seen for a one-way Porto Airport to San Diego International Airport flight is 347 €. A return plane ticket is currently 675 €. Depending on the availability and when you book, these fares can change.

      • To score cheap tickets from OPO to SAN, book as early as you can. Airlines usually offer lower fares when flights are first made available.

      • The 'Whole month' search function shows you the cheapest flights from Porto Airport to San Diego International Airport across the month. It's a good way to find a bargain if your travel dates aren't set in stone.

      • Spend less time searching for cheap flights from OPO to SAN by setting up a Price Alert. You'll get an email or notification on the app when a special offer becomes available.

      • Tailor your trip with filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Porto Airport to San Diego International Airport.

      Handy information about Porto Airport (OPO)

      • When it comes to the on-time performance of Porto Airport, 75% of flights complete their journey on time.

      • Central Porto to Porto Airport is approximately 11 kilometres. Depending on traffic, it'll take about 20 minutes to get there if you're catching a taxi, ride-sharing or driving.

      • The trip on public transport usually takes 30 minutes.

      • Get your travels off to a hassle-free start by staying near OPO. Whether you're taking an early flight from Porto Airport to San Diego International Airport or want to avoid feeling rushed, these hotels are ideal:

      Arriving at San Diego International Airport (SAN)

      When to fly to San Diego International Airport (SAN)

      • It's time to choose your trip dates for your flight from Porto Airport to San Diego International Airport. August is the busiest month to head to San Diego. If you'd like a more low-key vibe, go in March.

      • When booking your flight from Porto Airport to San Diego International Airport, think about the kind of weather you enjoy. August is the warmest month in San Diego, with temperatures ranging from 16ºC (61ºF) to 27ºC (81ºF).

      • Search for cheap tickets from OPO to SAN in February if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 8ºC (46ºF) and 22ºC (72ºF) on average.

      Explore more of the United States

      • You've visited San Diego, now it's time to discover more of the United States. Travel about 177 kilometres north-west to Los Angeles to tick off its top sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, there's plenty to keep you busy.

      • Around 483 kilometres east of San Diego, Phoenix is another favourite stop in the United States. Experience the best of this destination with a visit to Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.