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$441+ Cheap flights from Portugal to Colorado

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap flight deals from Portugal to Colorado

Best flights from Portugal to Colorado
Discover carefully curated flight deals from Portugal to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 26, 2025.

This American Airlines deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/148:45 pmLIS - COS
2 stops20h 06mAmerican Airlines
Sun 1/186:12 amCOS - LIS
2 stops22h 53mAmerican Airlines
Deal found 12/25$736
This Iberia deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:45 pmLIS - DEN
2 stops20h 42mMultiple Airlines
Mon 2/235:25 pmDEN - LIS
1 stop21h 30mMultiple Airlines
Deal found 12/24$754
This British Airways deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1611:05 amLIS - DEN
1 stop17h 37mBritish Airways
Mon 2/235:25 pmDEN - LIS
1 stop21h 30mBritish Airways
Deal found 12/24$756
This Scandinavian Airlines deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/264:55 pmLIS - DEN
2 stops37h 16mScandinavian Airlines
Sat 1/311:16 pmDEN - LIS
2 stops36h 39mScandinavian Airlines
Deal found 12/25$757
This Air Canada deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:50 amFNC - DEN
2 stops17h 20mAir Canada
Wed 2/181:25 pmDEN - FNC
2 stops17h 25mAir Canada
Deal found 12/22$1,341
This British Airways deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/26:30 amLIS - DEN
2 stops23h 04mMultiple Airlines
Mon 2/91:40 pmDEN - LIS
2 stops18h 15mMultiple Airlines
Deal found 12/24$754
This American Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/318:20 amLIS - DEN
2 stops21h 56mAmerican Airlines
Mon 2/23:17 pmDEN - LIS
2 stops16h 38mAmerican Airlines
Deal found 12/23$755
This Cheapflightsfares deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/27:05 amLIS - DEN
1 stop15h 25mBritish Airways
Mon 2/95:25 pmDEN - LIS
1 stop18h 30mBritish Airways
Deal found 12/24$757
This Scandinavian Airlines deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/287:05 amLIS - DEN
2 stops23h 06mScandinavian Airlines
Sat 1/311:16 pmDEN - LIS
2 stops36h 39mScandinavian Airlines
Deal found 12/25$757
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/298:45 amFNC - DEN
2 stops45h 17mTAP AIR PORTUGAL
Sat 1/3112:48 pmDEN - FNC
2 stops24h 57mTAP AIR PORTUGAL
Deal found 12/24$1,613
This British Airways deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2111:05 amLIS - DEN
1 stop18h 19mBritish Airways
Wed 1/2812:28 pmDEN - LIS
2 stops16h 42mBritish Airways
Deal found 12/25$758
This British Airways deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/1411:05 amLIS - DEN
1 stop18h 19mBritish Airways
Fri 1/235:25 pmDEN - LIS
1 stop17h 30mBritish Airways
Deal found 12/25$758
This British Airways deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1211:05 amLIS - DEN
1 stop18h 19mBritish Airways
Sun 1/254:30 pmDEN - LIS
2 stops22h 15mBritish Airways
Deal found 12/24$758
This British Airways deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1311:05 amLIS - DEN
1 stop18h 19mBritish Airways
Fri 1/238:30 amDEN - LIS
2 stops26h 25mBritish Airways
Deal found 12/25$759

Find flight deals from Portugal to Colorado

Keep the following information in mind while searching for Portugal to Colorado flight deals. Data was last updated December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$754
(British Airways)

One-way from

$441
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$995
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
Search Deals
From Portugal to Colorado
Search Deals
One-way flight from Portugal to Colorado
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Colorado that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 26, 2025.
Use the filters below to find and compare flights from Portugal to Colorado that are best for you.

Fly from

Portugal

Fly to

Colorado

Route

Depart

Return

Price

LisbonColorado Springs

LIS - COS

LISCOS

Lisbon Humberto Delgado

Wed 1/14

8:45 pm-9:51 am

2 stops20h 06m

Colorado Springs

Sun 1/18

6:12 am-12:05 pm

2 stops22h 53m

$736

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 2/16

6:45 pm-8:27 am

2 stops20h 42m

Denver Intl

Mon 2/23

5:25 pm-9:55 pm

1 stop21h 30m

$754

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 2/2

6:30 am-10:34 pm

2 stops23h 04m

Denver Intl

Mon 2/9

1:40 pm-2:55 pm

2 stops18h 15m

$754

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 1/31

8:20 am-11:16 pm

2 stops21h 56m

Denver Intl

Mon 2/2

3:17 pm-2:55 pm

2 stops16h 38m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 2/16

11:05 am-9:42 pm

1 stop17h 37m

Denver Intl

Mon 2/23

5:25 pm-9:55 pm

1 stop21h 30m

$756

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 1/26

4:55 pm-11:11 pm

2 stops37h 16m

Denver Intl

Sat 1/31

1:16 pm-8:55 am

2 stops36h 39m

$757

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 2/2

7:05 am-3:30 pm

1 stop15h 25m

Denver Intl

Mon 2/9

5:25 pm-6:55 pm

1 stop18h 30m

$757

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 1/28

7:05 am-11:11 pm

2 stops23h 06m

Denver Intl

Sat 1/31

1:16 pm-8:55 am

2 stops36h 39m

$757

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 1/21

11:05 am-10:24 pm

1 stop18h 19m

Denver Intl

Wed 1/28

12:28 pm-12:10 pm

2 stops16h 42m

$758

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 1/14

11:05 am-10:24 pm

1 stop18h 19m

Denver Intl

Fri 1/23

5:25 pm-5:55 pm

1 stop17h 30m

$758

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 23 results
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Best time to book a flight from Portugal to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Colorado

What is the cheapest month to book a flight from Portugal to Colorado?

Currently, February is the cheapest month in which you can book a flight from Portugal to Colorado (average of $706). Flying from Portugal to Colorado in July is currently the most expensive (average of $941). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PT to CO?

Find hourly flight availability from Portugal to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

One of the essential ways to save on airfare from Portugal to Colorado is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 27% on airfare.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated December 26, 2025.
See what other customers who have flown with Delta, United Airlines, and British Airways from Portugal to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,012 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,012 reviews
Delta
7.9
Good
8,012 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,115 reviews
Delta
7.9
Good
8,012 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,617 reviews
Delta
7.9
Good
8,012 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portugal to Colorado?

    A quick flight from Portugal to Colorado can take about 17h 20m. American Airlines provides one of the quickest options available for as low as $1,341. Portugal and Colorado are separated by a distance of 4715 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Portugal to Colorado one-way?

    The cheapest airlines for a one-way flight from Portugal to Colorado are Aer Lingus ($557), British Airways ($564), and American Airlines ($565).

  • Can I find deals for flights from Portugal to Colorado that include hotel bookings?

    Yes. In addition to deals on Portugal to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Colorado.

  • Can I find deals for business class flights from Portugal to Colorado?

    Yes. Cheapflights offers flight deals from Portugal to Colorado by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to Colorado?

    Currently, February is the cheapest month in which you can book a flight from Portugal to Colorado (average of $706). Flying from Portugal to Colorado in July is currently the most expensive (average of $941). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Portugal to Colorado

Discover the top 3 airlines that operate flights from Portugal to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$704Average$918FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$809Average$1,074FlexibilityNo cancel feeOn-time69%

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