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$333+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Dec 9 — Dec 161
Tue 12/9
Tue 12/16
1 adult, Economy
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Cheap flight deals from Portugal to Colorado

Keep the following information in mind while searching for Portugal to Colorado flight deals. Data was last updated November 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$782
(Kiwi.com)

One-way from

$333
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$941
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
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From Portugal to Colorado
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One-way flight from Portugal to Colorado
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Highest demand for flights based on searches. 7% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Portugal to Colorado

Cheapest flights from Portugal to Colorado
Explore the most affordable flight options available from Portugal to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:00 amLIS - DEN
2 stops25h 58mMultiple Airlines
Sat 1/104:25 pmDEN - LIS
1 stop34h 30mMultiple Airlines
Deal found 11/9$794
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:00 amLIS - DEN
1 stop15h 40mLufthansa
Mon 12/294:05 pmDEN - LIS
1 stop11h 10mLufthansa
Deal found 11/8$831
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:00 amLIS - DEN
1 stop15h 40mLufthansa
Tue 12/3011:20 amDEN - LIS
1 stop15h 55mLufthansa
Deal found 11/8$832
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:25 pmLIS - DEN
1 stop22h 18mMultiple Airlines
Sun 12/147:00 amDEN - LIS
2 stops22h 50mMultiple Airlines
Deal found 11/8$844
This Cheapflightsfares deal was found by Cheapflights users on 11/8. 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.
Thu 12/45:00 amLIS - DEN
1 stop15h 40mLufthansa
Sun 12/144:05 pmDEN - LIS
1 stop11h 10mLufthansa
Deal found 11/8$852
This United Airlines deal was found by Cheapflights users on 11/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:00 amLIS - DEN
1 stop15h 40mUnited Airlines
Tue 12/3011:20 amDEN - LIS
2 stops15h 55mUnited Airlines
Deal found 11/8$855
This United Airlines deal was found by Cheapflights users on 11/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:00 amLIS - DEN
1 stop15h 40mUnited Airlines
Sun 12/147:50 amDEN - LIS
2 stops19h 25mUnited Airlines
Deal found 11/8$856
This United Airlines deal was found by Cheapflights users on 11/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:00 amLIS - DEN
2 stops21h 40mUnited Airlines
Sun 12/147:50 amDEN - LIS
2 stops19h 25mUnited Airlines
Deal found 11/8$861
This United Airlines deal was found by Cheapflights users on 11/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:00 amLIS - DEN
2 stops23h 56mUnited Airlines
Sat 12/275:30 pmDEN - LIS
1 stop32h 50mUnited Airlines
Deal found 11/8$867
This Iberia deal was found by Cheapflights users on 11/8. 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.
Sat 12/68:20 amLIS - DEN
2 stops22h 01mMultiple Airlines
Sun 12/145:25 pmDEN - LIS
1 stop21h 20mMultiple Airlines
Deal found 11/8$872
This British Airways deal was found by Cheapflights users on 11/8. 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.
Sat 12/610:40 amLIS - DEN
1 stop19h 26mBritish Airways
Sun 12/145:25 pmDEN - LIS
1 stop21h 20mBritish Airways
Deal found 11/8$874
This AranGrant deal was found by Cheapflights users on 11/9. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:15 pmFNC - DEN
2 stops29h 12mLufthansa
Thu 1/14:20 pmDEN - FNC
2 stops21h 30mLufthansa
Deal found 11/9$4,238

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 November 9, 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

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 12/15

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Mon 12/29

4:05 pm-10:15 am

1 stop11h 10m

$831

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 12/10

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Tue 12/30

11:20 am-10:15 am

1 stop15h 55m

$832

LisbonColorado Springs

LIS - COS

LISCOS

Lisbon Humberto Delgado

Wed 2/18

5:00 am-8:44 am

2 stops34h 44m

Colorado Springs

Sun 2/22

12:20 pm-10:15 am

2 stops14h 55m

$837

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 4/29

5:05 am-1:35 pm

1 stop15h 30m

Denver Intl

Sun 5/3

6:00 am-10:30 am

1 stop21h 30m

$855

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 12/10

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Tue 12/30

11:20 am-10:15 am

2 stops15h 55m

$855

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 12/4

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Sun 12/14

7:50 am-10:15 am

2 stops19h 25m

$856

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 12/15

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Mon 12/29

7:50 am-10:15 am

1 stop19h 25m

$856

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 12/26

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Sat 1/10

1:31 pm-8:10 am

1 stop11h 39m

$856

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 12/7

5:00 am-7:40 pm

2 stops21h 40m

Denver Intl

Sun 12/14

7:50 am-10:15 am

2 stops19h 25m

$861

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 12/9

5:00 am-4:00 pm

1 stop18h 00m

Denver Intl

Sat 12/27

5:30 pm-9:20 am

1 stop32h 50m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 26 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 $703). 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 November 9, 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 November 9, 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
8,000 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
8,000 reviews
Delta
7.9
Good
8,000 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
9,013 reviews
Delta
7.9
Good
8,000 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
7,505 reviews
Delta
7.9
Good
8,000 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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 15h 40m. Lufthansa provides one of the quickest options available for as low as $831. Portugal and Colorado are separated by a distance of 4826 mi. This flight may include one or multiple stops.

  • 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 $703). 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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Alternative routes for Portugal to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$749Average$932FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$809Average$1,063FlexibilityNo cancel feeOn-time69%

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