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$350+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$656
(Kiwi.com)

One-way from

$350
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$1,010
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. 8% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Thu 11/65:55 amLIS - DEN
2 stops24h 21mMultiple Airlines
Wed 11/199:09 amDEN - LIS
1 stop19h 31mMultiple Airlines
Deal found 9/16$656
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/137:00 amLIS - DEN
2 stops23h 16mMultiple Airlines
Wed 11/199:09 amDEN - LIS
1 stop19h 31mMultiple Airlines
Deal found 9/15$691
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 11/137:00 amLIS - DEN
2 stops23h 16mMultiple Airlines
Mon 11/179:09 amDEN - LIS
1 stop19h 31mMultiple Airlines
Deal found 9/15$702
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 11/117:00 amLIS - DEN
2 stops25h 08mMultiple Airlines
Wed 11/199:09 amDEN - LIS
1 stop19h 31mMultiple Airlines
Deal found 9/15$715
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:40 pmLIS - DEN
3 stops31h 25mMultiple Airlines
Sun 11/93:40 pmDEN - LIS
2 stops24h 05mMultiple Airlines
Deal found 9/15$716
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 11/117:00 amLIS - DEN
2 stops25h 08mMultiple Airlines
Tue 11/184:08 pmDEN - LIS
1 stop30h 17mMultiple Airlines
Deal found 9/15$718
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/1210:00 amLIS - DEN
1 stop15h 26mMultiple Airlines
Thu 11/206:22 amDEN - LIS
1 stop19h 33mMultiple Airlines
Deal found 9/14$723
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/147:05 amLIS - DEN
2 stops23h 11mMultiple Airlines
Mon 11/179:09 amDEN - LIS
1 stop17h 46mMultiple Airlines
Deal found 9/15$726
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 11/117:00 amLIS - DEN
2 stops25h 08mMultiple Airlines
Mon 11/179:09 amDEN - LIS
1 stop17h 46mMultiple Airlines
Deal found 9/15$727
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/309:50 amLIS - DEN
1 stop28h 43mMultiple Airlines
Wed 11/129:09 amDEN - LIS
2 stops30h 46mMultiple Airlines
Deal found 9/15$729
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:05 amFNC - DEN
3 stops35h 31mMultiple Airlines
Wed 10/154:15 pmDEN - FNC
2 stops24h 40mMultiple Airlines
Deal found 9/15$1,326
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Tue 10/144:05 amFNC - DEN
2 stops21h 35mLufthansa
Wed 10/155:59 pmDEN - FNC
1 stop14h 46mLufthansa
Deal found 9/15$1,681

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 September 16, 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 2/18

11:15 am-11:31 pm

2 stops19h 16m

Colorado Springs

Sun 2/22

12:13 pm-5:45 pm

2 stops22h 32m

$735

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 11/17

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Thu 11/27

8:13 am-9:55 pm

2 stops30h 42m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 11/18

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Sat 11/29

6:00 am-5:55 pm

2 stops28h 55m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 10/30

10:55 am-9:55 pm

1 stop17h 00m

Denver Intl

Wed 11/12

4:31 pm-5:40 pm

2 stops18h 09m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 11/19

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Mon 11/24

10:26 am-6:55 pm

2 stops25h 29m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 12/18

8:55 am-9:44 pm

1 stop19h 49m

Denver Intl

Tue 12/23

4:55 pm-2:50 pm

2 stops38h 55m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 11/17

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Sat 11/29

6:00 am-5:55 pm

2 stops28h 55m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 11/16

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Tue 11/25

12:26 pm-9:45 pm

2 stops26h 19m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 11/17

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Mon 11/24

12:27 pm-2:55 pm

2 stops19h 28m

$755

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 11/18

11:05 am-11:18 pm

1 stop19h 13m

Denver Intl

Thu 11/27

8:13 am-2:45 pm

2 stops23h 32m

$755

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 25 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, October is the cheapest month in which you can book a flight from Portugal to Colorado (average of $197). Flying from Portugal to Colorado in March is currently the most expensive (average of $278). 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 September 16, 2025.

When flying from Portugal to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 16, 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
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,363 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 19h 13m. American Airlines provides one of the quickest options available for as low as $755. 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, October is the cheapest month in which you can book a flight from Portugal to Colorado (average of $197). Flying from Portugal to Colorado in March is currently the most expensive (average of $278). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$749Average$932FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$766Average$932FlexibilityNo cancel feeOn-time69%

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