How long is the flight from Colorado to Portugal?

Average flight duration from Colorado to Portugal depends on which airport you fly into and out of. Flying from Denver to Lisbon is 11h 25m on average, while flying from Colorado Springs to Lisbon is 14h 36m on average. Lisbon is the most popular airport in Portugal.

What airlines fly to Portugal?

United Airlines, Lufthansa and British Airways are the top three most popular airlines that fly to Portugal from Colorado according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 13 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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

Icelandair, British Airways, and American Airlines are the most popular carriers operating from Colorado to Portugal

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

Prices for flights from Colorado to Portugal are refreshed on a daily basis.

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

As of November 2025, there are 13 operators available to choose from for flights from Colorado to Portugal.

How old do you have to be to fly from Colorado to Portugal?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Portugal.

What documentation or ID do you need to fly to Portugal?

The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$245 Cheap Flights from Colorado to Portugal in 2025/26

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One-way

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Cheap round-trip flights

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4:20 pm - 1:15 pmDEN-OPO

13h 55m1 stop

6:00 am - 4:00 pmOPO-DEN

17h 00m1 stop

$530Lufthansa

Find Deal

Wed, Dec 3 - Wed, Dec 10

8:30 am - 1:20 pmASE-LIS

21h 50m2 stops

11:20 am - 5:49 pmLIS-ASE

37h 29m2 stops

$532United Airlines

Find Deal

Fri, Nov 28 - Sat, Dec 6

12:45 pm - 8:10 amDEN-LIS

12h 25m1 stop

2:10 pm - 2:35 pmLIS-DEN

31h 25m1 stop

$562Multiple Airlines

Find Deal

Mon, Nov 17 - Tue, Dec 2

5:30 pm - 9:20 amDEN-LIS

32h 50m1 stop

3:55 pm - 4:00 pmLIS-DEN

31h 05m1 stop

$563Multiple Airlines

Find Deal

Sat, Jan 31 - Mon, Feb 16

11:47 am - 8:00 amDEN-LIS

13h 13m1 stop

5:00 am - 11:45 pmLIS-DEN

25h 45m2 stops

$565Delta

Find Deal

Sun, Nov 16 - Thu, Dec 4

11:47 am - 8:00 amDEN-LIS

13h 13m1 stop

11:25 am - 10:01 amLIS-DEN

29h 36m2 stops

$571Delta

Find Deal

Sun, Nov 16 - Fri, Dec 5

1:16 pm - 3:50 pmDEN-LIS

19h 34m2 stops

6:55 am - 10:21 pmLIS-DEN

22h 26m2 stops

$585Scandinavian Airlines

Find Deal

Thu, Jan 29 - Fri, Feb 6

7:21 pm - 9:20 amDEN-LIS

30h 59m2 stops

10:55 am - 10:32 amLIS-DEN

30h 37m2 stops

$587Air Canada

Find Deal

Sun, Nov 16 - Thu, Dec 4

5:30 pm - 9:20 amDEN-LIS

32h 50m2 stops

11:20 am - 6:07 pmLIS-DEN

37h 47m2 stops

$596Air Canada

Find Deal

Mon, Dec 29 - Tue, Jan 13

10:54 am - 6:20 pmDEN-FAO

24h 26m2 stops

6:50 pm - 9:45 pmFAO-DEN

33h 55m2 stops

$1,778Scandinavian Airlines

Find Deal

Fri, Dec 26 - Sat, Jan 3

United Airlines flights from Colorado to Portugal

Our best United Airlines deals on Colorado to Portugal flight tickets

United Airlines

Nov 28

ASE8:30 amAspen Pitkin County

21h 50m

2 stops

LIS1:20 pmLisbon Humberto Delgado

Dec 6

LIS11:20 amLisbon Humberto Delgado

37h 29m

2 stops

ASE5:49 pmAspen Pitkin County

$532

Find similar

United Airlines

Nov 12

ASE5:12 pmAspen Pitkin County

33h 08m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 17

LIS6:10 amLisbon Humberto Delgado

39h 26m

2 stops

ASE2:36 pmAspen Pitkin County

$547

Find similar

United Airlines

Nov 12

ASE1:35 pmAspen Pitkin County

13h 40m

2 stops

LIS10:15 amLisbon Humberto Delgado

Nov 17

LIS6:10 amLisbon Humberto Delgado

41h 21m

2 stops

ASE4:31 pmAspen Pitkin County

$553

Find similar

Air Canada flights from Colorado to Portugal

Our best Air Canada deals on Colorado to Portugal flight tickets

Air Canada

Nov 16

DEN7:25 pmDenver Intl

30h 55m

2 stops

LIS9:20 amLisbon Humberto Delgado

Dec 4

LIS10:55 amLisbon Humberto Delgado

38h 11m

2 stops

DEN6:06 pmDenver Intl

$577

Find similar

Air Canada

Nov 16

DEN7:21 pmDenver Intl

30h 59m

2 stops

LIS9:20 amLisbon Humberto Delgado

Dec 4

LIS10:55 amLisbon Humberto Delgado

30h 37m

2 stops

DEN10:32 amDenver Intl

$587

Find similar

Air Canada

Dec 29

DEN5:30 pmDenver Intl

32h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 13

LIS11:20 amLisbon Humberto Delgado

37h 47m

2 stops

DEN6:07 pmDenver Intl

$596

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 12/3

4:20 pm-1:15 pm

1 stop13h 55m

Porto

Wed 12/10

6:00 am-4:00 pm

1 stop17h 00m

$530

AspenLisbon

ASE - LIS

ASELIS

Aspen Pitkin County

Fri 11/28

8:30 am-1:20 pm

2 stops21h 50m

Lisbon Humberto Delgado

Sat 12/6

11:20 am-5:49 pm

2 stops37h 29m

$532

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 11/17

12:45 pm-8:10 am

1 stop12h 25m

Lisbon Humberto Delgado

Tue 12/2

2:10 pm-2:35 pm

1 stop31h 25m

$562

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 1/31

5:30 pm-9:20 am

1 stop32h 50m

Lisbon Humberto Delgado

Mon 2/16

3:55 pm-4:00 pm

1 stop31h 05m

$563

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 11/16

11:47 am-8:00 am

1 stop13h 13m

Lisbon Humberto Delgado

Thu 12/4

5:00 am-11:45 pm

2 stops25h 45m

$565

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 11/16

11:47 am-8:00 am

1 stop13h 13m

Lisbon Humberto Delgado

Fri 12/5

11:25 am-10:01 am

2 stops29h 36m

$571

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 1/29

1:16 pm-3:50 pm

2 stops19h 34m

Lisbon Humberto Delgado

Fri 2/6

6:55 am-10:21 pm

2 stops22h 26m

$585

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 11/16

7:21 pm-9:20 am

2 stops30h 59m

Lisbon Humberto Delgado

Thu 12/4

10:55 am-10:32 am

2 stops30h 37m

$587

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 12/29

5:30 pm-9:20 am

2 stops32h 50m

Lisbon Humberto Delgado

Tue 1/13

11:20 am-6:07 pm

2 stops37h 47m

$596

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Fri 12/26

10:54 am-6:20 pm

2 stops24h 26m

Faro

Sat 1/3

6:50 pm-9:45 pm

2 stops33h 55m

$1,778

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 Portugal

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

Other information

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Colorado is in January. Flight prices, which tend to average around $740, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Colorado during November instead. Flights to Portugal in November, while not as cheap as those in January, still average around $765.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Colorado. The lowest ticket price found for a Wednesday departure recently was $950. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Saturday, with ticket prices averaging around $1,154.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the morning. Flights from Colorado to Portugal during this time can be as low as $995. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,110 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $952 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Colorado for as low as $824 on momondo.

Cheap Colorado to Portugal flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Colorado to Portugal?
Prices for flights from Colorado to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Portugal?
As of November 2025, there are 13 operators available to choose from for flights from Colorado to Portugal.
How old do you have to be to fly from Colorado to Portugal?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Portugal.
What documentation or ID do you need to fly to Portugal?
The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Portugal

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $458	Free Cancellation	Rating 7.1 572 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $539	Free Cancellation	Rating 7.5 672 reviews	Search Virgin Atlantic flights
Turkish Airlines	PriceFrom $555	Free Cancellation	Rating 7.3 4,032 reviews	Search Turkish Airlines flights
Delta	PriceFrom $558	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Lufthansa	PriceFrom $567	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
Air France	PriceFrom $569	Free Cancellation	Rating 7.4 1,484 reviews	Search Air France flights
British Airways	PriceFrom $588	Free Cancellation	Rating 6.7 7,500 reviews	Search British Airways flights
American Airlines	PriceFrom $594	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
United Airlines	PriceFrom $596	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
Air Canada	PriceFrom $596	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights

Why use momondo?

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

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 Portugal from Colorado.

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

Flights from Colorado to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Colorado and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Colorado and alert you when they change.

An easier way to manage your Portugal 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.

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $369

Flights to Portofrom $346

Flights to Funchalfrom $389

Flights to Farofrom $380

Flights to Ponta Delgadafrom $401

Flights to Lajesfrom $497

Flights to Hortafrom $564

Flights to Pico Islandfrom $563

Flights to Porto Santofrom $646

Flights to Velasfrom $553

Cheap flights from Colorado to Portugal from $245

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 Portugal departing on 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Colorado to Portugal

Cheap round-trip flights

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Cheap last minute flights

United Airlines flights from Colorado to Portugal

Our best United Airlines deals on Colorado to Portugal flight tickets

Air Canada flights from Colorado to Portugal

Our best Air Canada deals on Colorado to Portugal flight tickets

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Use the filters below to find and compare flights from Colorado to Portugal that are best for you.

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How to get the cheapest flight ticket from Colorado to Portugal

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

What is the cheapest month to fly to Portugal?

What is the cheapest day to depart on your flight to Portugal?

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the morning. Flights from Colorado to Portugal during this time can be as low as $995. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,110 per ticket.

How far in advance should I book a flight to Portugal?

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

Icelandair, British Airways, and American Airlines are the most popular carriers operating from Colorado to Portugal

What airlines fly to Portugal?

How long is the flight from Colorado to Portugal?

Average flight duration from Colorado to Portugal depends on which airport you fly into and out of. Flying from Denver to Lisbon is 11h 25m on average, while flying from Colorado Springs to Lisbon is 14h 36m on average. Lisbon is the most popular airport in Portugal.

Cheap Colorado to Portugal flight deals and tips

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

Direct flights

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

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

How old do you have to be to fly from Colorado to Portugal?

What documentation or ID do you need to fly to Portugal?

Best airlines flying from Colorado to Portugal

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

Why use momondo?

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

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

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

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

An easier way to manage your Portugal 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

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo