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Cheap Flights from Houston to Porto

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      Travelers and cabin class, 1 Adult, Economy

      Compare Houston to Porto flight deals

      Find the cheapest month or even day of the year to fly to Porto

      Book the best Porto fare with no extra fees

      Flight deals from Houston to Porto

      Looking for a cheap last-minute deal or the best round-trip flight from Houston to Porto Airport? If you want to travel next month, round-trip fares start from AED 2,822. Find the lowest prices on one-way and round-trip tickets right here.
      Porto.AED 1,062 per passenger.Departing Mon, Oct 5.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Mon, Oct 5, arriving in Porto.Price includes taxes and charges.From AED 1,062, select.
      Porto.AED 1,128 per passenger.Departing Sun, Sep 27.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Sun, Sep 27, arriving in Porto.Price includes taxes and charges.From AED 1,128, select.
      Porto.AED 1,170 per passenger.Departing Tue, Nov 3.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Houston George Bush Intercntl. on Tue, Nov 3, arriving in Porto.Price includes taxes and charges.From AED 1,170, select.
      Porto.AED 1,203 per passenger.Departing Wed, Mar 17.One-way flight with British Airways.Outbound indirect flight with British Airways, departing from Houston George Bush Intercntl. on Wed, Mar 17, arriving in Porto.Price includes taxes and charges.From AED 1,203, select.
      Porto.AED 1,209 per passenger.Departing Sun, Feb 21.One-way flight with United.Outbound indirect flight with United, departing from Houston George Bush Intercntl. on Sun, Feb 21, arriving in Porto.Price includes taxes and charges.From AED 1,209, select.
      Porto.AED 1,214 per passenger.Departing Tue, Apr 13.One-way flight with United.Outbound indirect flight with United, departing from Houston George Bush Intercntl. on Tue, Apr 13, arriving in Porto.Price includes taxes and charges.From AED 1,214, select.
      Porto.AED 1,215 per passenger.Departing Tue, Dec 1.One-way flight with United.Outbound indirect flight with United, departing from Houston George Bush Intercntl. on Tue, Dec 1, arriving in Porto.Price includes taxes and charges.From AED 1,215, select.
      Porto.AED 1,225 per passenger.Departing Sun, May 2.One-way flight with Delta.Outbound indirect flight with Delta, departing from Houston George Bush Intercntl. on Sun, May 2, arriving in Porto.Price includes taxes and charges.From AED 1,225, select.
      Porto.AED 1,226 per passenger.Departing Wed, Jan 6.One-way flight with Air France.Outbound indirect flight with Air France, departing from Houston George Bush Intercntl. on Wed, Jan 6, arriving in Porto.Price includes taxes and charges.From AED 1,226, select.
      Porto.AED 1,413 per passenger.Departing Sun, Jul 18.One-way flight with United.Outbound indirect flight with United, departing from Houston George Bush Intercntl. on Sun, Jul 18, arriving in Porto.Price includes taxes and charges.From AED 1,413, select.
      Porto.AED 1,866 per passenger.Departing Tue, Jun 1.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departing from Houston George Bush Intercntl. on Tue, Jun 1, arriving in Porto.Price includes taxes and charges.From AED 1,866, select.

      Find the cheapest month to fly from Houston to Porto

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to Porto flights are currently cheapest in October.
      Aug
      Find prices
      Sep
      from AED 1,128
      Oct
      from AED 1,062
      Nov
      from AED 1,170
      Dec
      from AED 1,215
      Jan
      from AED 1,226
      Feb
      from AED 1,209
      Mar
      from AED 1,203
      Apr
      from AED 1,214
      May
      from AED 1,225
      Jun
      from AED 1,866
      Jul
      from AED 1,413

      Houston to Porto: Alternative routes

      Compare routes from Houston 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 AED 1,062
      Search flights

      Vila Real

      76km from central Porto
      Search flights

      Viseu G. Lobato

      81km from central Porto
      Search flights

      Houston to Porto: Flight information

      The things to know before you go.
      Cheapest flight foundAED 1,062
      Cheapest month to flyOctober

      Finding cheap flights from Houston to Porto: Frequently asked questions

      The best price we found for a round-trip flight from Houston to Porto is AED 2,336. 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 Houston to Porto. But we found flights with one stop from AED 2,336.
      There are no flights flying from Houston to Porto, as of August 2026.
      The cheapest month to fly from Houston to Porto is usually October.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Porto Airport on Saturday, October 17, 2026.
      No airlines currently offer direct flights between Houston 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 Frontier Airlines.

      Flying from Houston to Porto Airport (OPO): What you need to know

      • The timezone in Porto is UTC+0, which is six hours ahead of Houston. Porto Airport is located in Porto.

      • Get to the airport on time so you don't miss your flight from Houston to OPO. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.

      • Going away during a peak time like July? Popular seasons (like Christmas/New Year and spring break) can easily add another hour at check-in and security. Be extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

      Airports in Houston

      Houston George Bush Intercontinental Airport (IAH)

      • We make it simple to book cheap flights from Houston to OPO with a stopover. To explore your options leaving from Houston George Bush Intercontinental Airport (IAH), deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Major stopovers between IAH and OPO include:

        • Newark Liberty International Airport (EWR)

        • Toronto Pearson International Airport (YYZ)

        • Montreal-Trudeau International Airport (YUL)

      • Traveling from central Houston to IAH takes around 1 hour 10 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 40 kilometers in 30 minutes or so, depending on traffic.

      • Have an early flight from Houston to Porto Airport? Avoid the last-minute rush to the terminal (and sneak in some bonus sleep) by staying at one of these hotels near Houston George Bush Intercontinental Airport:

      • Of all flights departing from Houston George Bush Intercontinental Airport, 79% arrive on time at their destination.

      • IAH is located at 16930 JFK Boulevard.

      Houston Hobby Airport (HOU)

      About Porto Airport (OPO)

      Getting from Porto Airport (OPO) to central Porto

      • Porto Airport is around 11 kilometers from central Porto. It takes around 20 minutes or so to drive to the city.

      • It typically takes 30 minutes if you're traveling on public transport.

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

      • AED 1,062 is currently the best price for a one-way ticket from Houston to Porto Airport. Return flights start at AED 2,336. These fares can change depending on availability and demand.

      • Booking in advance is often the key to finding a cheap flight from Houston to OPO. Fares tend to rise as demand increases, so the closer you get to departure, the more you'll likely spend.

      • The 'Whole month' tool will show you the cheapest Houston to Porto Airport tickets across the month. It's a good way to snap up a bargain if your plans are flexible.

      • Spend less time searching for cheap plane tickets from Houston to OPO by setting up a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.

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

      The best time to fly from Houston to Porto Airport (OPO)

      • December is the quietest month for flights from Houston to Porto Airport (OPO), while August is the busiest. Find the ideal time to visit Porto based on whether you want a lively atmosphere or a more laid-back vibe.

      • Book a Houston to OPO plane ticket departing in August if you're eager to visit the city during its warmest month. Expect temperatures in Porto to range from 14ºC (57ºF) to 32ºC (90ºF).

      • January has temperatures of between 3ºC (37ºF) and 14ºC (57ºF). Search for cheap tickets from Houston to Porto Airport around that time if you want to travel when it's cooler.

      More about Porto

      • Once you've booked your flight from Houston to Porto Airport, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Porto:

      • You'll find loads of things to do in Porto when you're in the mood to sightsee. Head straight for Ribeira District followed by Rio Douro and Livraria Lello.

      Explore more of Portugal

      • Lisbon is just one of the many cities in Portugal waiting to be explored after you've seen Porto. Around 290 kilometers away to the south, well-known attractions include Pasteis de Belém, belém and Real Mosteiro de Santa Maria de Belém.

      • Amadora is another sought-after destination in Portugal and is around 274 kilometers south of Porto. No journey is complete without seeing Roman Villa, Park Fantasia and Palácio dos Condes da Lousã.

      More travel options

      Plan the rest of your trip from Houston to Porto

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