The cheapest times to fly from SIN to OPO are

  • January 15th to April 1st (except the week of February 19th)
  • April 23rd to June 24th (except the week of April 30th)
  • September 10th to October 7th
  • November 5th to December 2nd

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SIN to OPO is late January. Prices can be as high as $1476 for Friday flights during early to mid December, or as low as $608 for Tuesday flights around late January.


When to Fly to Porto

Flying from Singapore (SIN) to Porto (OPO) will usually cost between $680 to $1183 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $716. Due to high demand the most expensive time to fly is early to mid December, with an average price of $1202. Planning your trip to low-cost times can easily save you $486 on economy flights and even more on first-class flights. Generally, any price below $847 can be considered a good price for a round-trip SIN to OPO flight.

See below for a graph of average weekly prices for the SIN to OPO route. All prices are for round-trip tickets in USD.

SIN to OPO Flight Prices

Compared to other flights, the SIN to OPO flight is cheaper than the average and costs less than the average flight leaving from Singapore. The average price per mile (for a direct flight) is $0.07, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Porto, and Saturdays are the most expensive days to return to Singapore. Selecting flights on the least expensive days could save you up to $140 (14%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $778. Return trip prices are from the OPO to SIN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SIN to OPO can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 14 hour 9 minutes may not be realistic.


Flight Hacking SIN to OPO

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SIN to OPO — but Champion Traveler does!

Hack #1: Luxembourg (SIN > LUX > OPO)

  • Price for both tickets: $711
  • Average savings: $137 (16.12%)

See SIN to BCN flights

Hack #2: Barcelona (SIN > BCN > OPO)

  • Price for both tickets: $741
  • Average savings: $106 (12.51%)

See SIN to LUX flights

Hack #3: Madrid (SIN > MAD > OPO)

  • Price for both tickets: $747
  • Average savings: $100 (11.81%)

See SIN to MAD flights


Flight Questions Answered

Still have questions about flying from SIN to OPO? We’ve got answers.

Which airlines fly this route?

You can find 22 major airlines flying this route most often: Aegean, Air Europa, Air France, Air India, Alitalia, British Airways, Brussels Airlines, Emirates, Etihad, Finnair, Iberia, KLM, LOT, Lufthansa, Qatar Airways, Royal Air Maroc, SAS, Saudia, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, and potentially more during busy seasons.

How far away is it from Porto Airport to Singapore Changi International Airport?

The distance between the two airports is roughly 7317 miles or 11776 kilometers.

How long does it take to fly from SIN to OPO?

The real-world flight time for a nonstop SIN to OPO flight is about 14 hour 9 minutes.

How many flights go between Singapore and Porto?

It depends on the day of the week and the date, but a typical day might have around 12 available flights from SIN to OPO.


Airport Location Info


Departing Airport

Origination code SIN
Origination airport name Singapore Changi International Airport
City Singapore
Country Singapore
Latitude 1.4
Longitude 104

Return Airport

Destination code OPO
Destination airport name Porto Airport
City Porto
Country Portugal
Latitude 41.2
Longitude -8.7


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.