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 30m on average, while flying from Colorado Springs to Lisbon is 13h 35m 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?

KLM, United Airlines, and Aer Lingus 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 February 2026, 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.

$249 Cheap Flights from Colorado to Portugal in 2026

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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.

5:13 pm - 5:55 pm

COS

LIS

17h 42m

2 stops

8:25 am - 11:32 pm

LIS

COS

22h 07m

2 stops

$497American Airlines

Mon, Apr 27 - Thu, May 7

1:33 pm - 3:40 pm

COS

LIS

19h 07m

2 stops

1:00 pm - 10:47 am

LIS

COS

28h 47m

2 stops

$513United Airlines

Sat, Apr 25 - Tue, May 5

12:51 pm - 6:55 pm

DEN

FAO

24h 04m

2 stops

9:45 pm - 5:07 pm

FAO

DEN

26h 22m

2 stops

$545KLM

Mon, Mar 16 - Mon, Mar 30

11:55 am - 2:55 pm

COS

LIS

20h 00m

2 stops

7:45 pm - 9:27 pm

LIS

COS

32h 42m

2 stops

$551Multiple Airlines

Mon, Apr 27 - Wed, May 6

11:55 am - 2:55 pm

COS

LIS

20h 00m

2 stops

5:35 am - 9:27 pm

LIS

COS

22h 52m

2 stops

$559Delta

Mon, Apr 27 - Sat, May 9

6:10 am - 10:30 am

DEN

OPO

22h 20m

2 stops

5:00 am - 9:28 pm

OPO

DEN

23h 28m

2 stops

$565Delta

Tue, Mar 24 - Tue, Mar 31

6:40 pm - 3:45 pm

DEN

LIS

14h 05m

1 stop

7:10 am - 4:30 pm

LIS

DEN

16h 20m

1 stop

$580British Airways

Mon, Apr 27 - Tue, May 5

6:40 pm - 11:00 pm

DEN

LIS

21h 20m

1 stop

11:00 am - 11:59 pm

LIS

DEN

19h 59m

2 stops

$590Multiple Airlines

Tue, Apr 14 - Tue, Apr 28

6:15 am - 8:00 am

COS

LIS

18h 45m

2 stops

5:00 am - 9:27 pm

LIS

COS

23h 27m

2 stops

$602KLM

Tue, Apr 28 - Fri, May 8

6:25 pm - 10:35 am

DEN

FAO

34h 10m

1 stop

11:10 am - 4:20 pm

FAO

DEN

36h 10m

1 stop

$687British Airways

Mon, Mar 16 - Mon, Mar 30

United Airlines flights from Colorado to Portugal

Our best United Airlines deals on Colorado to Portugal flight tickets

United Airlines

Apr 25

COS1:33 pmColorado Springs

19h 07m

2 stops

LIS3:40 pmLisbon Humberto Delgado

May 5

LIS1:00 pmLisbon Humberto Delgado

28h 47m

2 stops

COS10:47 amColorado Springs

$513

United Airlines

Apr 25

COS1:33 pmColorado Springs

19h 07m

2 stops

LIS3:40 pmLisbon Humberto Delgado

May 7

LIS12:20 pmLisbon Humberto Delgado

27h 27m

2 stops

COS8:47 amColorado Springs

$532

United Airlines

Feb 26

COS1:40 pmColorado Springs

13h 35m

2 stops

LIS10:15 amLisbon Humberto Delgado

Mar 2

LIS10:15 amLisbon Humberto Delgado

18h 29m

2 stops

COS9:44 pmColorado Springs

$555

American Airlines flights from Colorado to Portugal

Our best American Airlines deals on Colorado to Portugal flight tickets

American Airlines

Apr 27

COS5:13 pmColorado Springs

17h 42m

2 stops

LIS5:55 pmLisbon Humberto Delgado

May 7

LIS8:25 amLisbon Humberto Delgado

22h 07m

2 stops

COS11:32 pmColorado Springs

$497

American Airlines

Apr 14

DEN6:00 amDenver Intl

18h 40m

2 stops

OPO7:40 amPorto

Apr 21

OPO8:20 amPorto

21h 25m

2 stops

DEN10:45 pmDenver Intl

$571

American Airlines

May 4

DEN7:00 amDenver Intl

17h 40m

2 stops

OPO7:40 amPorto

Nov 16

OPO8:40 pmPorto

21h 51m

2 stops

DEN11:31 amDenver Intl

$616

Fly from

Fly to

Route

Depart

Return

Price

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Mon 4/27

5:13 pm-5:55 pm

2 stops17h 42m

Lisbon Humberto Delgado

Thu 5/7

8:25 am-11:32 pm

2 stops22h 07m

$497

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Sat 4/25

1:33 pm-3:40 pm

2 stops19h 07m

Lisbon Humberto Delgado

Tue 5/5

1:00 pm-10:47 am

2 stops28h 47m

$513

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Mon 3/16

12:51 pm-6:55 pm

2 stops24h 04m

Faro

Mon 3/30

9:45 pm-5:07 pm

2 stops26h 22m

$545

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Mon 4/27

11:55 am-2:55 pm

2 stops20h 00m

Lisbon Humberto Delgado

Wed 5/6

7:45 pm-9:27 pm

2 stops32h 42m

$551

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Mon 4/27

11:55 am-2:55 pm

2 stops20h 00m

Lisbon Humberto Delgado

Sat 5/9

5:35 am-9:27 pm

2 stops22h 52m

$559

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/24

6:10 am-10:30 am

2 stops22h 20m

Porto

Tue 3/31

5:00 am-9:28 pm

2 stops23h 28m

$565

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/27

6:40 pm-3:45 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 5/5

7:10 am-4:30 pm

1 stop16h 20m

$580

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/14

6:40 pm-11:00 pm

1 stop21h 20m

Lisbon Humberto Delgado

Tue 4/28

11:00 am-11:59 pm

2 stops19h 59m

$590

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Tue 4/28

6:15 am-8:00 am

2 stops18h 45m

Lisbon Humberto Delgado

Fri 5/8

5:00 am-9:27 pm

2 stops23h 27m

$602

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Mon 3/16

6:25 pm-10:35 am

1 stop34h 10m

Faro

Mon 3/30

11:10 am-4:20 pm

1 stop36h 10m

$687

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 $626, 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 February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $630.

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 $886 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 $753 on momondo.

Can stopping save me money on Colorado to Portugal flights?

You could potentially save up to 23% 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 18m
Direct flights	None

The fastest flight from Colorado to Portugal takes 12h 18m

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 February 2026, 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 7.1 617 reviews	Search Icelandair flights
United Airlines	PriceFrom $514	Free Cancellation	Rating 7.4 9,344 reviews	Search United Airlines flights
British Airways	PriceFrom $555	Free Cancellation	Rating 6.7 7,762 reviews	Search British Airways flights
Lufthansa	PriceFrom $559	Free Cancellation	Rating 6.8 7,808 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $574	Free Cancellation	Rating 7.3 4,236 reviews	Search Turkish Airlines flights
Delta	PriceFrom $575	Free Cancellation	Rating 7.9 8,238 reviews	Search Delta flights
Air Canada	PriceFrom $595	Free Cancellation	Rating 7.1 10,742 reviews	Search Air Canada flights
KLM	PriceFrom $599	Free Cancellation	Rating 7.7 1,460 reviews	Search KLM flights
Virgin Atlantic	PriceFrom $603	Free Cancellation	Rating 7.5 679 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $630	Free Cancellation	Rating 7.2 11,344 reviews	Search American 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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Find better results for your trip to Portugal

Popular cities

Other flights from Colorado

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $386

Flights to Portofrom $364

Flights to Funchalfrom $465

Flights to Farofrom $406

Flights to Ponta Delgadafrom $449

Flights to Lajesfrom $560

Flights to Pico Islandfrom $562

Flights to Hortafrom $549

Flights to Porto Santofrom $471

Flights to Velasfrom $578

Cheap flights from Colorado to Portugal from $249

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 3/30. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Colorado to Portugal

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United Airlines flights from Colorado to Portugal

Our best United Airlines deals on Colorado to Portugal flight tickets

American Airlines flights from Colorado to Portugal

Our best American Airlines 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.

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 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

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

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