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639 € Cheap Flights from San Diego to Porto

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Flight deals from San Diego to Porto

Looking for a cheap last-minute deal or the best return flight from San Diego to Porto Airport? If you want to travel next month, return fares start from 773 €. Find the lowest prices on one-way and return tickets right here.
Porto.639 € per passenger.Departing Wed, 30 Dec, returning Mon, 18 Jan.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from San Diego International on Wed, 30 Dec, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Mon, 18 Jan, arriving in San Diego International.Price includes taxes and charges.From 639 €, select.
Porto.647 € per passenger.Departing Sat, 7 Nov, returning Thu, 19 Nov.Return flight with KLM.Outbound indirect flight with KLM, departs from San Diego International on Sat, 7 Nov, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Thu, 19 Nov, arriving in San Diego International.Price includes taxes and charges.From 647 €, select.
Porto.664 € per passenger.Departing Sun, 27 Sep, returning Mon, 12 Oct.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from San Diego International on Sun, 27 Sep, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Mon, 12 Oct, arriving in San Diego International.Price includes taxes and charges.From 664 €, select.
Porto.670 € per passenger.Departing Mon, 21 Sep, returning Mon, 28 Sep.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from San Diego International on Mon, 21 Sep, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Mon, 28 Sep, arriving in San Diego International.Price includes taxes and charges.From 670 €, select.
Porto.690 € per passenger.Departing Mon, 1 Feb, returning Sat, 1 May.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from San Diego International on Mon, 1 Feb, arriving in Porto.Inbound indirect flight with Lufthansa, departs from Porto on Sat, 1 May, arriving in San Diego International.Price includes taxes and charges.From 690 €, select.
Porto.705 € per passenger.Departing Sun, 9 May, returning Sun, 23 May.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from San Diego International on Sun, 9 May, arriving in Porto.Inbound indirect flight with Lufthansa, departs from Porto on Sun, 23 May, arriving in San Diego International.Price includes taxes and charges.From 705 €, select.
Porto.719 € per passenger.Departing Sun, 16 Aug, returning Tue, 25 Aug.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from San Diego International on Sun, 16 Aug, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Tue, 25 Aug, arriving in San Diego International.Price includes taxes and charges.From 719 €, select.
Porto.724 € per passenger.Departing Thu, 1 Oct, returning Thu, 8 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Thu, 1 Oct, arriving in Porto.Inbound indirect flight with Delta, departs from Porto on Thu, 8 Oct, arriving in San Diego International.Price includes taxes and charges.From 724 €, select.
Porto.733 € per passenger.Departing Fri, 16 Oct, returning Sun, 1 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Fri, 16 Oct, arriving in Porto.Inbound indirect flight with Delta, departs from Porto on Sun, 1 Nov, arriving in San Diego International.Price includes taxes and charges.From 733 €, select.
Porto.758 € per passenger.Departing Sun, 7 Mar, returning Sat, 20 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from San Diego International on Sun, 7 Mar, arriving in Porto.Inbound indirect flight with Delta, departs from Porto on Sat, 20 Mar, arriving in San Diego International.Price includes taxes and charges.From 758 €, select.
Porto.765 € per passenger.Departing Sat, 22 Aug, returning Sat, 19 Sep.Return flight with Alaska Airlines and Ryanair.Outbound indirect flight with Alaska Airlines, departs from San Diego International on Sat, 22 Aug, arriving in Porto.Inbound indirect flight with Ryanair, departs from Porto on Sat, 19 Sep, arriving in San Diego International.Price includes taxes and charges.From 765 €, select.
Porto.773 € per passenger.Departing Mon, 13 Jul, returning Tue, 28 Jul.Return flight with KLM.Outbound indirect flight with KLM, departs from San Diego International on Mon, 13 Jul, arriving in Porto.Inbound indirect flight with KLM, departs from Porto on Tue, 28 Jul, arriving in San Diego International.Price includes taxes and charges.From 773 €, select.
Porto.787 € per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Air France.Outbound indirect flight with Air France, departs from San Diego International on Wed, 29 Jul, arriving in Porto.Inbound indirect flight with Air France, departs from Porto on Wed, 5 Aug, arriving in San Diego International.Price includes taxes and charges.From 787 €, select.
Porto.804 € per passenger.Departing Fri, 14 Aug, returning Sat, 1 May.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from San Diego International on Fri, 14 Aug, arriving in Porto.Inbound indirect flight with Lufthansa, departs from Porto on Sat, 1 May, arriving in San Diego International.Price includes taxes and charges.From 804 €, select.
Porto.882 € per passenger.Departing Sun, 28 Jun, returning Tue, 7 Jul.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from San Diego International on Sun, 28 Jun, arriving in Porto.Inbound indirect flight with Lufthansa, departs from Porto on Tue, 7 Jul, arriving in San Diego International.Price includes taxes and charges.From 882 €, select.
Porto.907 € per passenger.Departing Wed, 17 Jun, returning Sun, 28 Jun.Return flight with WestJet and TAP Air Portugal.Outbound indirect flight with WestJet, departs from San Diego International on Wed, 17 Jun, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Sun, 28 Jun, arriving in San Diego International.Price includes taxes and charges.From 907 €, select.

Find the cheapest month to fly from San Diego to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego to Porto flights are currently cheapest in November.
Jun
from 907 €
Jul
from 773 €
Aug
from 719 €
Sep
from 670 €
Oct
from 724 €
Nov
from 647 €
Dec
Find prices
Jan
Find prices
Feb
Find prices
Mar
from 758 €
Apr
Find prices
May
from 705 €

San Diego to Porto: Alternative routes

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

Porto

12km from central Porto
ClosestCheapest
from 639 €
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Vila Real

76km from central Porto
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Viseu G. Lobato

81km from central Porto
Search flights

San Diego to Porto: Flight information

The things to know before you go.
Cheapest flight found639 €
Cheapest month to flyDecember

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

The best price we found for a return flight from San Diego to Porto is 639 €. 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 San Diego to Porto. But we found flights with one stop from 639 €.
As of June 2026, there are no flights flying from San Diego to Porto.
The cheapest month to fly from San Diego to Porto is usually December.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Porto Airport on Wednesday, 30 December 2026.
No airlines currently offer direct flights between San Diego and Porto 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 Porto 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 Porto is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Porto is Air France .

Travelling from San Diego to Porto Airport (OPO): What you need to know

  • Porto Airport is located in Porto. The city follows the UTC+0 timezone and is eight hours ahead of San Diego.

  • To ensure you catch your flight from San Diego to OPO, leave plenty of time to check in and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Popular months like July or high seasons such as spring break and Christmas will mean longer waits at check-in and security. If you're travelling then, play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is wise.

Airports in San Diego

San Diego International Airport (SAN)

  • Stopovers are the perfect opportunity to take a travel break and perhaps even visit a new city. When browsing cheap flights from San Diego to OPO departing from San Diego International Airport (SAN), uncheck the 'Direct flights only' box to find out where you can visit along the way. Popular options include:

    • Newark Liberty International Airport (EWR)

    • Toronto Pearson International Airport (YYZ)

    • Montreal-Trudeau International Airport (YUL)

  • Located around 5 kilometres from the centre of San Diego, SAN can be reached in about 15 minutes by car, depending on traffic. The journey by public transport takes roughly 25 minutes.

  • Planning to catch an early flight from San Diego to Porto Airport? Avoid rushing to the terminal (and catch some extra z's) by picking one of these stays near San Diego International Airport:

  • 74% of flights leaving from San Diego International Airport reach their destination on time.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • CLD is approximately 48 kilometres from central San Diego. Plan ahead to find the easiest way to arrive at the terminal.

  • Kick off your holiday early with an extra night away from home. Before catching your San Diego to OPO flight, unwind in one of these hotels near McClellan-Palomar Airport:

  • McClellan-Palomar Airport has a track record for punctuality. 88% of flights out of here arrive right when they're supposed to.

About Porto Airport (OPO)

  • If you have a late flight from San Diego to Porto Airport, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and snoozing not long after at one of these options near OPO:

  • Secure the lowest price by reserving your ride around three weeks before your San Diego to Porto Airport flight.

Getting from Porto Airport (OPO) to central Porto

  • Central Porto is around 11 kilometres from Porto Airport and takes about 20 minutes to reach by car. See what your options are for making the trip into the city, whether that's with a taxi, car hire or ride-share.

  • If you're travelling by public transport, expect a journey of about 30 minutes.

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

  • At the moment, 302 € is the lowest price we've found for a one-way ticket from San Diego to Porto Airport. The cheapest price for a return flight is 639 €. Keep in mind fares may change due to demand at the time of booking.

  • Booking ahead of time is often the key to scoring a cheap flight from San Diego to OPO. Flight prices rise as demand increases, so the closer you get to departure, the more it could cost you.

  • If you're flexible with your travel dates, try using the 'Whole month' search tool. It'll show you the lowest price across each month when searching for your San Diego to Porto Airport ticket.

  • Finding a cheap plane ticket from San Diego to OPO is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when prices go down.

  • Filters make it easier to land a deal on your flight from San Diego to Porto Airport. Pick the flight times, carriers and stops that look good to you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from San Diego to Porto Airport (OPO)

  • August is when most people book flights from San Diego to Porto Airport (OPO). Visit Porto in December for a more laid-back experience.

  • The warmest month in Porto is August, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your San Diego to OPO plane ticket then if that's your definition of good weather.

  • January sees temperatures of between 3ºC (37ºF) and 14ºC (57ºF). Look for cheap tickets from San Diego to Porto Airport around that time if you like travelling in cooler conditions.

More about Porto

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in Porto right here. Explore these options as soon as you've booked your flight from San Diego to Porto Airport:

  • All great holidays should include some sightseeing. Ribeira District, Rio Douro and Livraria Lello are essential stops on your Porto itinerary.

Explore more of Portugal

  • Porto has plenty to offer, but there are so many other corners of Portugal you should also see. Around 290 kilometres south of Porto, a trip to Lisbon will fill your itinerary to the brim. Start with leading sights like Pasteis de Belém, belém and Real Mosteiro de Santa Maria de Belém.

  • If you're ready to explore another side of Portugal, consider Amadora, about 274 kilometres south of Porto. Roman Villa, Park Fantasia and Palácio dos Condes da Lousã are key highlights.

Plan the rest of your trip from San Diego to Porto

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.