Cheap Flights from Porto to Denver International

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Travellers and cabin class, 1 Adult, Economy

Compare Porto to Denver International flight deals

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

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Flight deals from Porto to Denver International

Looking for a cheap last-minute deal or the best return flight from Porto Airport to Denver International Airport? If you want to travel next month, return fares start from $1,541. Find the lowest prices on one-way and return tickets right here.

Denver.$1,544 per passenger.Departing Thu, 5 Nov, returning Sun, 8 Nov.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Porto on Thu, 5 Nov, arriving in Denver International.Inbound indirect flight with Air France, departs from Denver International on Sun, 8 Nov, arriving in Porto.Price includes taxes and charges.From $1,544, select.

Denver.$1,544 per passenger.Departing Fri, 5 Feb, returning Wed, 10 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Fri, 5 Feb, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Wed, 10 Feb, arriving in Porto.Price includes taxes and charges.From $1,544, select.

Denver.$1,545 per passenger.Departing Sat, 24 Apr, returning Sat, 8 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Sat, 24 Apr, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Sat, 8 May, arriving in Porto.Price includes taxes and charges.From $1,545, select.

Denver.$1,545 per passenger.Departing Mon, 19 Oct, returning Wed, 18 Nov.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Porto on Mon, 19 Oct, arriving in Denver International.Inbound indirect flight with Air France, departs from Denver International on Wed, 18 Nov, arriving in Porto.Price includes taxes and charges.From $1,545, select.

Denver.$1,545 per passenger.Departing Tue, 29 Sep, returning Tue, 13 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Tue, 29 Sep, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Tue, 13 Oct, arriving in Porto.Price includes taxes and charges.From $1,545, select.

Denver.$1,545 per passenger.Departing Mon, 14 Sep, returning Mon, 21 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Mon, 14 Sep, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Mon, 21 Sep, arriving in Porto.Price includes taxes and charges.From $1,545, select.

Denver.$1,550 per passenger.Departing Tue, 20 Oct, returning Sun, 25 Oct.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from Porto on Tue, 20 Oct, arriving in Denver International.Inbound indirect flight with Air France, departs from Denver International on Sun, 25 Oct, arriving in Porto.Price includes taxes and charges.From $1,550, select.

Denver.$1,606 per passenger.Departing Mon, 21 Dec, returning Sun, 3 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Porto on Mon, 21 Dec, arriving in Denver International.Inbound indirect flight with British Airways, departs from Denver International on Sun, 3 Jan, arriving in Porto.Price includes taxes and charges.From $1,606, select.

Denver.$1,719 per passenger.Departing Thu, 26 Nov, returning Fri, 30 Apr.Return flight with United.Outbound indirect flight with United, departs from Porto on Thu, 26 Nov, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Fri, 30 Apr, arriving in Porto.Price includes taxes and charges.From $1,719, select.

Denver.$1,726 per passenger.Departing Fri, 29 Jan, returning Mon, 14 Jun.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Porto on Fri, 29 Jan, arriving in Denver International.Inbound indirect flight with Lufthansa, departs from Denver International on Mon, 14 Jun, arriving in Porto.Price includes taxes and charges.From $1,726, select.

Find the cheapest month to fly from Porto to Denver International

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

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Porto to Denver International: Alternative routes

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

Denver International

30km from central Denver

ClosestCheapest

from $1,535

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Porto to Denver: Flight information

The things to know before you go.

Cheapest flight found	$1,535
Cheapest month to fly	February

Finding cheap flights from Porto to Denver International: Frequently asked questions

How much are return flights from Porto to Denver International?

The best price we found for a return flight from Porto to Denver International is $1,544. 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.

Which airlines fly direct from Porto to Denver International?

Currently, there are no airlines that fly direct from Porto to Denver International. But we found flights with one or more stops from $1,535.

How many flights are there a week from Porto to Denver International?

As of September 2026, there are no flights flying from Porto to Denver International.

When is the cheapest time to fly from Porto to Denver International?

The cheapest month to fly from Porto to Denver International is usually February.

Which upcoming date is cheapest to fly from Porto Airport to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Denver International Airport on Friday, 5 February 2027.

Can I get a direct flight from Porto Airport to Denver International Airport?

No airlines currently offer direct flights between Porto Airport and Denver International Airport. Most routes have one or more stops.

How can I find the best flight deal to Denver International?

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 Denver 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.

When is the best time to book flights to Denver?

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

Which is the cheapest airline to fly from Porto Airport to Denver International with?

Currently, Delta offers the cheapest flight tickets to Denver International.

Travelling from Porto Airport (OPO) to Denver International Airport (DEN): what you need to know

The timezone in Denver is UTC-7, which is seven hours behind Porto.
Your OPO to DEN flight won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
Travelling during a peak time such as August? School holidays and other high seasons can lead to longer lines at security. Play things extra safe and get there up to four hours before an international flight and two hours before a domestic departure.
Think about adding a stopover when booking your ticket from Porto Airport to Denver International Airport. Just uncheck 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between OPO and DEN:
- Paris Charles de Gaulle Airport
- New York Newark Airport
- Boston Logan International Airport

Handy information about Porto Airport (OPO)

75% of flights that take off from Porto Airport arrive at their destination on schedule.
Porto Airport is about 11 kilometres from central Porto. If you're driving, catching a taxi or ride-sharing from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.
You can expect a journey time of about 30 minutes on public transport.
Searching for a handy hotel near OPO? If you're boarding an early flight from Porto Airport to Denver International Airport, these accommodation options will put you moments from your departure lounge:

Arriving at Denver International Airport (DEN)

Consider staying at Baymont by Wyndham Denver International Airport after touching down from your Porto Airport to Denver International Airport flight. It's only a short drive from DEN and a handy option if you want to get some rest right away.
Fast-track your adventure by picking up a Denver International Airport rental car. Grab your wheels from Routes Car Rentals, Dollar or Budget and experience the lesser-explored corners of Denver and beyond.
Reserving your vehicle from Denver International Airport about one week ahead gives you the best shot at securing a great deal.

When to fly to Denver International Airport (DEN)

The quietest month for a flight from Porto Airport to Denver International Airport is January, while July is the most popular. Pick the ideal time to visit Denver based on whether you prefer a more relaxed vibe or a faster pace.
Lock in your flight from Porto Airport to Denver International Airport for July if you want to explore Denver during its warmest month. Expect temperatures of between 14ºC and 32ºC.
Search for cheap tickets from OPO to DEN in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between -9ºC and 7ºC on average.

Explore more of the United States

Colorado Springs is just one of the many places in the United States waiting to be discovered once you've seen Denver. Around 105 kilometres away to the south, its top attractions include Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon.
If you want to check out another major destination in the United States, consider Aurora, about 13 kilometres east of Denver. Plains Conservation Centre, DeLaney Homestead Historic District and Aircraft viewing are among the biggest draws.