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 14h 10m on average, while flying from Aspen to Lisbon is 14h 15m on average. Lisbon is the most popular airport in Portugal.

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

United Airlines, Lufthansa, and Delta are the most popular carriers operating from Colorado to 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 61% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 11 different airlines that fly to Portugal 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 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 June 2026, there are 11 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.

$258 Cheap Flights from Colorado to Portugal in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:15 pm - 12:50 pm

DEN

OPO

13h 35m

1 stop

6:00 am - 3:35 pm

OPO

DEN

16h 35m

1 stop

$688Lufthansa

Mon, Nov 23 - Fri, Nov 27

11:15 am - 9:50 am

DEN

LIS

15h 35m

1 stop

5:00 am - 3:35 pm

LIS

DEN

17h 35m

1 stop

$703Multiple Airlines

Tue, Nov 10 - Tue, Nov 17

4:15 pm - 12:50 pm

DEN

OPO

13h 35m

1 stop

4:10 pm - 3:35 pm

OPO

DEN

30h 25m

1 stop

$707Lufthansa

Sun, Nov 1 - Wed, Nov 11

11:15 am - 12:50 pm

DEN

OPO

18h 35m

2 stops

6:00 am - 5:18 pm

OPO

DEN

18h 18m

2 stops

$713Air Canada

Mon, Nov 23 - Fri, Nov 27

6:30 am - 9:05 am

DEN

OPO

19h 35m

1 stop

5:00 am - 10:43 pm

OPO

DEN

24h 43m

2 stops

$719Delta

Sun, Nov 1 - Wed, Nov 11

11:15 am - 9:50 am

DEN

LIS

15h 35m

1 stop

1:00 pm - 6:03 pm

LIS

DEN

36h 03m

2 stops

$720Air Canada

Tue, Nov 10 - Tue, Nov 17

6:45 am - 10:35 am

DEN

OPO

20h 50m

2 stops

5:00 am - 6:18 pm

OPO

DEN

20h 18m

2 stops

$722Delta

Sun, Nov 1 - Wed, Nov 11

11:25 am - 9:20 am

DEN

LIS

14h 55m

1 stop

5:00 am - 1:40 pm

LIS

DEN

15h 40m

1 stop

$723United Airlines

Wed, Oct 14 - Wed, Nov 4

11:15 am - 9:30 am

DEN

OPO

15h 15m

2 stops

6:00 am - 3:35 pm

OPO

DEN

16h 35m

1 stop

$743United Airlines

Mon, Nov 23 - Fri, Nov 27

9:03 am - 7:40 am

DEN

LIS

16h 37m

2 stops

8:45 pm - 9:31 am

LIS

DEN

19h 46m

2 stops

$746Iberia

Tue, Oct 27 - Mon, Nov 2

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Icelandair flights from Colorado to Portugal

Our best Icelandair deals on Colorado to Portugal flight tickets

Icelandair

Jul 4

DEN8:10 pmDenver Intl

18h 10m

1 stop

LIS9:20 pmLisbon Humberto Delgado

Jul 12

LIS10:20 pmLisbon Humberto Delgado

21h 20m

1 stop

DEN12:40 pmDenver Intl

$1,216

Icelandair

Jul 5

DEN4:40 pmDenver Intl

22h 15m

2 stops

LIS9:55 pmLisbon Humberto Delgado

Jul 12

LIS10:20 pmLisbon Humberto Delgado

21h 20m

1 stop

DEN12:40 pmDenver Intl

$1,403

Turkish Airlines flights from Colorado to Portugal

Our best Turkish Airlines deals on Colorado to Portugal flight tickets

Turkish Airlines

Sep 29

DEN8:25 pmDenver Intl

36h 15m

1 stop

OPO3:40 pmPorto

Oct 3

OPO4:40 pmPorto

32h 45m

1 stop

DEN6:25 pmDenver Intl

$843

Turkish Airlines

Sep 6

DEN8:25 pmDenver Intl

30h 15m

1 stop

OPO9:40 amPorto

Sep 16

OPO4:40 pmPorto

32h 45m

1 stop

DEN6:25 pmDenver Intl

$849

Turkish Airlines

Sep 19

DEN8:25 pmDenver Intl

30h 25m

1 stop

LIS9:50 amLisbon Humberto Delgado

Sep 26

LIS5:55 amLisbon Humberto Delgado

19h 30m

1 stop

DEN6:25 pmDenver Intl

$850

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 11/23

4:15 pm-12:50 pm

1 stop13h 35m

Porto

Fri 11/27

6:00 am-3:35 pm

1 stop16h 35m

$688

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 11/10

11:15 am-9:50 am

1 stop15h 35m

Lisbon Humberto Delgado

Tue 11/17

5:00 am-3:35 pm

1 stop17h 35m

$703

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 11/1

4:15 pm-12:50 pm

1 stop13h 35m

Porto

Wed 11/11

4:10 pm-3:35 pm

1 stop30h 25m

$707

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 11/23

11:15 am-12:50 pm

2 stops18h 35m

Porto

Fri 11/27

6:00 am-5:18 pm

2 stops18h 18m

$713

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 11/1

6:30 am-9:05 am

1 stop19h 35m

Porto

Wed 11/11

5:00 am-10:43 pm

2 stops24h 43m

$719

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 11/10

11:15 am-9:50 am

1 stop15h 35m

Lisbon Humberto Delgado

Tue 11/17

1:00 pm-6:03 pm

2 stops36h 03m

$720

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 11/1

6:45 am-10:35 am

2 stops20h 50m

Porto

Wed 11/11

5:00 am-6:18 pm

2 stops20h 18m

$722

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 10/14

11:25 am-9:20 am

1 stop14h 55m

Lisbon Humberto Delgado

Wed 11/4

5:00 am-1:40 pm

1 stop15h 40m

$723

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 11/23

11:15 am-9:30 am

2 stops15h 15m

Porto

Fri 11/27

6:00 am-3:35 pm

1 stop16h 35m

$743

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 10/27

9:03 am-7:40 am

2 stops16h 37m

Lisbon Humberto Delgado

Mon 11/2

8:45 pm-9:31 am

2 stops19h 46m

$746

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 March. Flight prices, which tend to average around $450, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Colorado during February instead. Flights to Portugal in February, while not as cheap as those in March, still average around $464.

How far in advance should I book a flight from Colorado 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 $927 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 $791 on momondo.

Can stopping save me money on Colorado to Portugal flights?

You could potentially save up to 24% on your flight if you consider stops on a Colorado to Portugal flight.

Cheap Colorado to Portugal flight deals and tips

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

Fastest flight time	12h 35m
Direct flights	None

The fastest flight from Colorado to Portugal takes 12h 35m

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

Search flight deals

Frequently asked questions about flying 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 June 2026, there are 11 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 $464	Free Cancellation	Rating 7.0 686 reviews	Search Icelandair flights
United Airlines	PriceFrom $511	Free Cancellation	Rating 7.4 9,879 reviews	Search United Airlines flights
KLM	PriceFrom $551	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights
Lufthansa	PriceFrom $559	Free Cancellation	Rating 6.8 8,092 reviews	Search Lufthansa flights
Delta	PriceFrom $575	Free Cancellation	Rating 7.8 8,431 reviews	Search Delta flights
American Airlines	PriceFrom $575	Free Cancellation	Rating 7.1 11,750 reviews	Search American Airlines flights
Aer Lingus	PriceFrom $594	Free Cancellation	Rating 7.3 1,622 reviews	Search Aer Lingus flights
Air Canada	PriceFrom $596	Free Cancellation	Rating 7.1 11,251 reviews	Search Air Canada flights
British Airways	PriceFrom $622	Free Cancellation	Rating 6.7 8,068 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $635	Free Cancellation	Rating 7.4 4,414 reviews	Search Turkish Airlines 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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Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $508

Flights to Portofrom $472

Flights to Funchalfrom $588

Flights to Farofrom $511

Flights to Ponta Delgadafrom $563

Flights to Lajesfrom $627

Flights to Hortafrom $694

Flights to Pico Islandfrom $697

Flights to Porto Santofrom $540

Flights to Velasfrom $669

Cheap flights from Colorado to Portugal from $258

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 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Icelandair flights from Colorado to Portugal

Our best Icelandair deals on Colorado to Portugal flight tickets

Turkish Airlines flights from Colorado to Portugal

Our best Turkish Airlines deals on Colorado to Portugal flight tickets

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See travel insights to Portugal from

How to get the cheapest flight ticket from Colorado to Portugal

What is the cheapest month to fly to Portugal?

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

Can stopping save me money on Colorado to Portugal flights?

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

What airlines fly to Portugal?

How long is the flight from Colorado to 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

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado 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?

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

Colorado flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

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

Cabin classes currently available on flights to Portugal

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

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year