What is the cheapest airline that flies from Colorado to Porto?

Lufthansa and Iberia are the most popular carriers operating from Colorado to Porto

What airlines fly to Porto?

United Airlines, Lufthansa and Air Canada are the top three most popular airlines that fly to Porto from Colorado according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 5 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to Porto Airport?

Prices for flights from Colorado to Porto Airport refresh daily.

How many operators does momondo search for flights from Colorado to Porto Airport?

As of November 2026, there are 5 operators available to choose from for flights from Colorado to Porto Airport.

How old do you have to be to fly from Colorado to Porto Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Porto Airport.

What documentation or ID do you need to fly to Porto Airport?

The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$327 Cheap Flights from Colorado to Porto in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:15 pm - 12:50 pmDEN Denver Intl-OPO Porto

13h 35m1 stop Munich Franz Josef Strauss

6:00 am - 3:35 pmOPO Porto-DEN Denver Intl

16h 35m1 stop Frankfurt am Main

$692Lufthansa

Tue, Mar 2 - Fri, Mar 5

4:00 pm - 11:25 pmDEN Denver Intl-OPO Porto

24h 25m1 stop Munich Franz Josef Strauss

6:00 am - 3:40 pmOPO Porto-DEN Denver Intl

16h 40m1 stop Frankfurt am Main

$692Lufthansa

Wed, Apr 14 - Tue, Apr 27

11:25 am - 11:50 amDEN Denver Intl-OPO Porto

17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

6:00 am - 6:17 pmOPO Porto-DEN Denver Intl

19h 17m2 stops Frankfurt am Main Vancouver Intl

$692Multiple Airlines

Wed, Feb 24 - Thu, Mar 11

11:15 am - 6:30 pmDEN Denver Intl-OPO Porto

24h 15m2 stops Chicago O'Hare Intl Zurich

6:00 am - 3:35 pmOPO Porto-DEN Denver Intl

16h 35m1 stop Frankfurt am Main

$696Multiple Airlines

Wed, Feb 24 - Wed, Mar 10

7:45 am - 9:30 amDEN Denver Intl-OPO Porto

18h 45m1 stop Newark

6:00 am - 1:40 pmOPO Porto-DEN Denver Intl

14h 40m1 stop Frankfurt am Main

$711United Airlines

Wed, Feb 24 - Wed, Mar 10

7:45 am - 9:30 amDEN Denver Intl-OPO Porto

18h 45m1 stop Newark

6:00 am - 1:40 pmOPO Porto-DEN Denver Intl

14h 40m1 stop Frankfurt am Main

$711United Airlines

Wed, Feb 24 - Wed, Mar 10

11:25 am - 11:50 amDEN Denver Intl-OPO Porto

17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

6:00 am - 7:43 amOPO Porto-DEN Denver Intl

32h 43m2 stops Frankfurt am Main Calgary

$717Air Canada

Wed, Feb 24 - Wed, Mar 10

6:30 am - 10:35 amDEN Denver Intl-OPO Porto

22h 05m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:00 am - 11:28 pmOPO Porto-DEN Denver Intl

24h 28m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$726Delta

Sun, Mar 14 - Fri, Mar 19

10:35 am - 10:35 amDEN Denver Intl-OPO Porto

17h 00m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:00 am - 7:31 pmOPO Porto-DEN Denver Intl

21h 31m2 stops Amsterdam Schiphol Salt Lake City

$726Delta

Tue, Mar 2 - Fri, Mar 5

9:47 am - 12:50 pmDEN Denver Intl-OPO Porto

20h 03m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

6:00 am - 10:30 amOPO Porto-DEN Denver Intl

35h 30m2 stops Frankfurt am Main Toronto Pearson Intl

$729Air Canada

Tue, Mar 2 - Fri, Mar 5

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Lufthansa flights from Colorado to Porto

Our best Lufthansa deals on Colorado to Porto flight tickets

Lufthansa

Feb 24

DEN5:02 pmDenver Intl

23h 28m

2 stops

OPO11:30 pmPorto

Mar 11

OPO6:00 amPorto

16h 35m

1 stop

DEN3:35 pmDenver Intl

$696

Lufthansa

Feb 24

DEN5:02 pmDenver Intl

23h 28m

2 stops

OPO11:30 pmPorto

Mar 11

OPO6:00 amPorto

16h 35m

1 stop

DEN3:35 pmDenver Intl

$712

Lufthansa

Feb 24

DEN5:02 pmDenver Intl

23h 28m

2 stops

OPO11:30 pmPorto

Mar 11

OPO6:00 amPorto

25h 15m

2 stops

DEN12:15 amDenver Intl

$716

Air Canada flights from Colorado to Porto

Our best Air Canada deals on Colorado to Porto flight tickets

Air Canada

Feb 24

DEN11:25 amDenver Intl

17h 25m

2 stops

OPO11:50 amPorto

Mar 10

OPO6:00 amPorto

32h 43m

2 stops

DEN7:43 amDenver Intl

$717

Air Canada

Mar 2

DEN9:47 amDenver Intl

20h 03m

2 stops

OPO12:50 pmPorto

Mar 5

OPO6:00 amPorto

35h 30m

2 stops

DEN10:30 amDenver Intl

$729

Air Canada

Mar 12

DEN5:40 pmDenver Intl

35h 00m

2 stops

OPO11:40 amPorto

Mar 20

OPO12:30 pmPorto

28h 00m

2 stops

DEN10:30 amDenver Intl

$841

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Tue 3/2

4:15 pm-12:50 pm

1 stop13h 35m

Porto

Fri 3/5

6:00 am-3:35 pm

1 stop16h 35m

$692

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 4/14

4:00 pm-11:25 pm

1 stop24h 25m

Porto

Tue 4/27

6:00 am-3:40 pm

1 stop16h 40m

$692

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 2/24

11:25 am-11:50 am

2 stops17h 25m

Porto

Thu 3/11

6:00 am-6:17 pm

2 stops19h 17m

$692

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 2/24

11:15 am-6:30 pm

2 stops24h 15m

Porto

Wed 3/10

6:00 am-3:35 pm

1 stop16h 35m

$696

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 2/24

7:45 am-9:30 am

1 stop18h 45m

Porto

Wed 3/10

6:00 am-1:40 pm

1 stop14h 40m

$711

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 2/24

7:45 am-9:30 am

1 stop18h 45m

Porto

Wed 3/10

6:00 am-1:40 pm

1 stop14h 40m

$711

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Wed 2/24

11:25 am-11:50 am

2 stops17h 25m

Porto

Wed 3/10

6:00 am-7:43 am

2 stops32h 43m

$717

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Sun 3/14

6:30 am-10:35 am

2 stops22h 05m

Porto

Fri 3/19

5:00 am-11:28 pm

2 stops24h 28m

$726

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Tue 3/2

10:35 am-10:35 am

2 stops17h 00m

Porto

Fri 3/5

5:00 am-7:31 pm

2 stops21h 31m

$726

DenverPorto

DEN Denver Intl - OPO Porto

DENOPO

Denver Intl

Tue 3/2

9:47 am-12:50 pm

2 stops20h 03m

Porto

Fri 3/5

6:00 am-10:30 am

2 stops35h 30m

$729

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Colorado, with most prices found around $695. If you aren’t able to travel during the month of February, then book flights to Porto from Colorado during November instead. Flights to Porto in November, while not as cheap as those in February, still average around $776.

How far in advance should I book a flight from Colorado to Porto?

You are more likely to see cheaper flights to Porto from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $969 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Colorado for as low as $806 on momondo.

Can stopping save me money on Colorado to Porto flights?

You could potentially save up to 15% on your flight if you consider stops on a Colorado to Porto flight.

Cheap Colorado to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Porto

Best Price Found	$327
Fastest flight time	13h 49m
Direct flights	None

The best one-way flight to Porto from Colorado in the past 72 hours is $327. The best round-trip flight deal from Colorado to Porto found on momondo in the last 72 hours is $692.

The fastest flight from Colorado to Porto takes 13h 49m

There are no direct flights from Colorado to Porto. There are no popular flight routes from Colorado to Porto.

Search flight deals

Frequently asked questions about flying from Colorado to Porto

When did momondo last update prices for flights from Colorado to Porto Airport?
Prices for flights from Colorado to Porto Airport refresh daily.
How many operators does momondo search for flights from Colorado to Porto Airport?
As of November 2026, there are 5 operators available to choose from for flights from Colorado to Porto Airport.
How old do you have to be to fly from Colorado to Porto Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Porto

Compare and see reviews for airlines that fly from Colorado to Porto with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $485	Free Cancellation	Rating 6.8 8,299 reviews	Search Lufthansa flights
United Airlines	PriceFrom $596	Free Cancellation	Rating 7.3 10,462 reviews	Search United Airlines flights
Air Canada	PriceFrom $700	Free Cancellation	Rating 7.1 11,861 reviews	Search Air Canada flights
Turkish Airlines	PriceFrom $701	Free Cancellation	Rating 7.4 4,472 reviews	Search Turkish Airlines flights
Delta	PriceFrom $933	Free Cancellation	Rating 7.8 8,700 reviews	Search Delta flights

Braga

Coimbra

Vila Nova de Gaia

Aveiro

Pinhao

Esposende

Matosinhos

Chaves

Viseu

Espinho

Arcos de Valdevez

Lamego

Guimarães

Caminha

Penafiel

Ponte de Lima

Mira

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from Colorado.

Can I find flights from Colorado to Porto with flexible booking policies on momondo?

All flight searches from Colorado to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Colorado to Porto?

Once all potential Colorado to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado to Porto right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Colorado to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Porto trip

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Cheap flights from Colorado to Porto from $327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Porto departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Lufthansa flights from Colorado to Porto

Our best Lufthansa deals on Colorado to Porto flight tickets

Air Canada flights from Colorado to Porto

Our best Air Canada deals on Colorado to Porto flight tickets

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How to get the cheapest flight ticket from Colorado to Porto

What is the cheapest month to fly to Porto?

How far in advance should I book a flight from Colorado to Porto?

Can stopping save me money on Colorado to Porto flights?

What is the cheapest airline that flies from Colorado to Porto?

What airlines fly to Porto?

Cheap Colorado to Porto flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado to Porto

Best airlines flying from Colorado to Porto

Compare and see reviews for airlines that fly from Colorado to Porto with momondo

Traveling to a place near Porto?

Why use momondo?

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Fly your favorite airline to Porto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Porto

List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

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