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$277+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$736
(Iberia)

One-way from

$277
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$942
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. 19% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 1, 2025.

This Iberia deal was found by Cheapflights users on 3/31. 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.
Tue 4/296:35 amLIS - DEN
2 stops23h 04mMultiple Airlines
Tue 5/66:35 pmDEN - LIS
1 stop13h 55mMultiple Airlines
Deal found 3/31$736
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 4/297:15 amLIS - DEN
1 stop16h 10mAmerican Airlines
Tue 5/66:35 pmDEN - LIS
1 stop21h 25mAmerican Airlines
Deal found 3/31$742
This Booking.com deal was found by Cheapflights users on 4/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/187:20 amLIS - DEN
1 stop16h 05mBritish Airways
Sun 5/44:41 pmDEN - LIS
2 stops18h 14mBritish Airways
Deal found 4/1$743
This Finnair deal was found by Cheapflights users on 3/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:35 amLIS - DEN
2 stops42h 04mFinnair
Tue 10/712:55 pmDEN - LIS
2 stops27h 05mFinnair
Deal found 3/31$760
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/296:35 amLIS - DEN
2 stops23h 04mIberia
Tue 5/63:49 pmDEN - LIS
2 stops24h 36mIberia
Deal found 3/31$768
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:40 amLIS - DEN
1 stop16h 50mDelta
Thu 5/89:15 amDEN - LIS
2 stops19h 00mDelta
Deal found 4/1$785
This KLM deal was found by Cheapflights users on 3/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/285:00 amLIS - DEN
2 stops22h 16mKLM
Mon 5/53:10 pmDEN - LIS
2 stops16h 25mKLM
Deal found 3/31$797
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/306:15 amLIS - DEN
1 stop19h 25mUnited Airlines
Wed 5/78:00 amDEN - LIS
2 stops17h 20mUnited Airlines
Deal found 3/31$820
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/175:40 amLIS - COS
2 stops20h 42mDelta
Mon 4/216:00 amCOS - LIS
2 stops28h 50mDelta
Deal found 4/1$822
This Lufthansa deal was found by Cheapflights users on 3/31. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:15 amLIS - DEN
2 stops23h 55mLufthansa
Thu 5/84:15 pmDEN - LIS
1 stop22h 35mLufthansa
Deal found 3/31$830
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Mon 4/148:25 amLIS - COS
2 stops22h 21mAmerican Airlines
Fri 4/1812:41 pmCOS - LIS
2 stops19h 54mAmerican Airlines
Deal found 3/30$890
This Air Canada deal was found by Cheapflights users on 3/31. 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.
Sat 9/279:50 amLIS - DEN
1 stop31h 28mAir Canada
Sat 10/45:40 pmDEN - LIS
1 stop32h 40mAir Canada
Deal found 3/31$910

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 April 1, 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

Tue 4/29

6:35 am-10:39 pm

2 stops23h 04m

Denver Intl

Tue 5/6

6:35 pm-3:30 pm

1 stop13h 55m

$736

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 4/29

7:15 am-4:25 pm

1 stop16h 10m

Denver Intl

Tue 5/6

6:35 pm-11:00 pm

1 stop21h 25m

$742

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 4/18

7:20 am-4:25 pm

1 stop16h 05m

Denver Intl

Sun 5/4

4:41 pm-5:55 pm

2 stops18h 14m

$743

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 9/24

6:35 am-5:39 pm

2 stops42h 04m

Denver Intl

Tue 10/7

12:55 pm-11:00 pm

2 stops27h 05m

$760

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 4/29

6:35 am-10:39 pm

2 stops23h 04m

Denver Intl

Tue 5/6

3:49 pm-11:25 pm

2 stops24h 36m

$768

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 5/1

5:40 am-3:30 pm

1 stop16h 50m

Denver Intl

Thu 5/8

9:15 am-11:15 am

2 stops19h 00m

$785

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 4/28

5:00 am-8:16 pm

2 stops22h 16m

Denver Intl

Mon 5/5

3:10 pm-2:35 pm

2 stops16h 25m

$797

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 4/30

6:15 am-6:40 pm

1 stop19h 25m

Denver Intl

Wed 5/7

8:00 am-8:20 am

2 stops17h 20m

$820

LisbonColorado Springs

LIS - COS

LISCOS

Lisbon Humberto Delgado

Thu 4/17

5:40 am-7:22 pm

2 stops20h 42m

Colorado Springs

Mon 4/21

6:00 am-5:50 pm

2 stops28h 50m

$822

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 4/30

6:15 am-11:10 pm

2 stops23h 55m

Denver Intl

Thu 5/8

4:15 pm-9:50 pm

1 stop22h 35m

$830

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 33 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 April 1, 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.

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 1, 2025.
Read through reviews of airlines operating flights from Portugal to Colorado, such as Delta, KLM and Finnair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,572 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 ($590), Turkish Airlines ($656), and Finnair ($684).

  • 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 4 airlines flying from Portugal to Colorado

Discover the top 4 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$749Average$925FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$766Average$932FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$845Average$930FlexibilityNo cancel feeOn-time71%

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