C$404 Cheap Flights from Denver to Porto

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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 Denver to Porto

Looking for a cheap last-minute deal or the best return flight from Denver to Porto? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Porto flights are currently cheapest in January.

Denver to Porto: Alternative routes

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

Denver to Porto: Flight information

The things to know before you go.
Cheapest flight foundC$404
Cheapest month to flyJanuary

Finding cheap flights from Denver to Porto: Frequently asked questions

The best price we found for a return flight from Denver to Porto is C$781. 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 Denver to Porto. But we found flights with one stop from C$781.
As of October 2025, there are no flights flying from Denver to Porto.
The cheapest month to fly from Denver to Porto is usually January.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Porto Airport on Friday, January 23, 2026.
No airlines currently offer direct flights between Denver 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 Icelandair .

Flying from Denver to Porto Airport (OPO): what you need to know

  • Denver International Airport (DEN) is Denver's main airport. Check out your options for reserving a flight from Denver to Porto Airport (OPO) jetting off from here.

  • The timezone in Porto is UTC+0, which is 6 hours ahead of Denver. Porto Airport is located in Porto.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to board your flight from Denver to OPO.

  • Getting away during a peak time like July? Popular seasons (like summer, Christmas and New Year) can add another hour at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.

Airports in Denver

Denver International Airport (DEN)

  • A stopover is the ideal opportunity to break up your trip — and maybe even explore another city. When browsing flights from Denver to OPO departing from Denver International Airport (DEN), uncheck the 'Direct flights only' box to see where you can stop along the way. Some popular options include:

    • Newark Liberty International Airport (EWR)

    • Pearson International Airport (YYZ)

    • Montreal-Pierre Elliott Trudeau International Airport (YUL)

  • DEN is about 40 kilometres from central Denver. To help work out how to get there, use Google Maps. This useful travel app will give you the quickest route and available public transport options.

  • Get your flight from Denver to Porto Airport off to a stress-free start. Just a quick ride from Denver International Airport, spend the night at SpringHill Suites Denver Airport and be well-rested for the trip ahead.

About Porto Airport (OPO)

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Denver to Porto Airport. Check in to one of these accommodation options near OPO instead:

Getting from Porto Airport (OPO) to central Porto

  • Porto Airport is approximately 16 kilometres from the centre of Porto. With your own car rental or in a cab, the drive is about 21 minutes.

  • Getting there by public transport takes around 49 minutes.

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

  • Book a one-way ticket from Denver to Porto Airport from C$404 or travel return from just C$781. Fares listed are subject to change and may differ when you make your booking.

  • To score flight tickets from Denver to OPO, book early. Airlines generally offer their best fares when flights are first released.

  • If you're flexible with your trip dates, check out the 'Whole month' tool. It'll show you the lowest price in each month when searching for your ticket from Denver to Porto Airport.

  • Log into your online account or use the app to create a Price Alert. We'll notify you straight away if there's a better deal on this route. It's easy to do, and it'll save you the hassle of searching for a cheap ticket from Denver to OPO every day.

  • Personalize your trip by applying filters. Choose the duration, number of stops, and departure and arrival times to find the ideal flight from Denver to Porto Airport. You can also sort the results to see the 'Best,' 'Cheapest' or 'Fastest' options first.

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

  • August is the busiest month to board a flight from Denver to Porto Airport while February is the quietest. To work out the best time to go to Porto, consider whether you prefer a lively vibe or a quieter pace.

  • Schedule your flight from Denver to OPO for August if you're eager to experience the city during its warmest month. Expect temperatures in Porto to range from 14ºC to 32ºC.

  • Visit in January if you want to explore when it's cooler. Temperatures average between 3ºC and 14ºC. However, this destination promises a good time whenever you book your cheap flights from Denver to Porto Airport.

More about Porto

Complete your Porto trip with a car rental

  • Finding you a cheap flight from Denver to Porto Airport isn't our only cool trick. Check out our car rentals in Porto and explore at your own pace. We find deals from trusted car rental providers and put them all in one place. You can instantly compare rates and then book with no fees.

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