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$424+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
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 August 1, 2025.

Round-trip from

$580
(Expedia)

One-way from

$424
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$941
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. 10% potential increase in price ($110 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 1, 2025.

This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:15 pmLIS - DEN
1 stop26h 44mAer Lingus
Fri 9/197:55 pmDEN - LIS
1 stop18h 40mAer Lingus
Deal found 7/30$580
This Mytrip deal was found by Cheapflights users on 8/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:10 amLIS - DEN
2 stops18h 55mMultiple Airlines
Sat 11/293:40 pmDEN - LIS
2 stops20h 35mMultiple Airlines
Deal found 8/1$747
This Delta deal was found by Cheapflights users on 8/1. 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 10/25:00 amLIS - DEN
2 stops19h 20mDelta
Wed 10/153:20 pmDEN - LIS
2 stops19h 35mDelta
Deal found 8/1$762
This KLM deal was found by Cheapflights users on 7/31. 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.
Fri 9/125:00 amLIS - DEN
2 stops17h 44mKLM
Fri 9/2612:05 pmDEN - LIS
1 stop12h 55mKLM
Deal found 7/31$771
This British Airways deal was found by Cheapflights users on 8/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2210:30 amLIS - DEN
1 stop19h 33mBritish Airways
Sat 11/295:25 pmDEN - LIS
1 stop14h 25mBritish Airways
Deal found 8/1$827
This Virgin Atlantic deal was found by Cheapflights users on 8/1. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:00 amLIS - DEN
1 stop19h 35mVirgin Atlantic
Mon 10/67:05 amDEN - LIS
1 stop17h 55mVirgin Atlantic
Deal found 8/1$831
This Scandinavian Airlines deal was found by Cheapflights users on 8/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/188:15 pmLIS - DEN
2 stops34h 34mScandinavian Airlines
Tue 8/267:20 amDEN - LIS
2 stops25h 50mScandinavian Airlines
Deal found 8/1$922
This Turkish Airlines deal was found by Cheapflights users on 7/31. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:55 amLIS - DEN
1 stop19h 00mTurkish Airlines
Sat 8/237:50 pmDEN - LIS
1 stop31h 05mTurkish Airlines
Deal found 7/31$1,018
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 8/175:05 amLIS - DEN
1 stop17h 30mUnited Airlines
Tue 8/265:40 pmDEN - LIS
1 stop32h 40mUnited Airlines
Deal found 7/31$1,037
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1312:35 pmFNC - DEN
2 stops29h 02mTAP AIR PORTUGAL
Sat 9/2011:25 amDEN - FNC
2 stops30h 50mTAP AIR PORTUGAL
Deal found 7/30$1,207
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/134:05 amFNC - DEN
2 stops22h 33mMultiple Airlines
Sat 9/2011:40 amDEN - FNC
1 stop14h 05mMultiple Airlines
Deal found 7/30$1,310
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:25 pmFNC - DEN
1 stop27h 20mLufthansa
Sat 9/203:50 pmDEN - FNC
1 stop16h 20mLufthansa
Deal found 7/30$1,882

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 August 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

Fri 9/5

10:15 pm-5:59 pm

1 stop26h 44m

Denver Intl

Fri 9/19

7:55 pm-9:35 pm

1 stop18h 40m

$580

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 11/22

6:10 am-6:05 pm

2 stops18h 55m

Denver Intl

Sat 11/29

3:40 pm-7:15 pm

2 stops20h 35m

$747

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 10/2

5:40 am-3:30 pm

1 stop16h 50m

Denver Intl

Wed 10/15

12:42 pm-2:50 pm

2 stops19h 08m

$762

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 9/12

5:00 am-3:44 pm

2 stops17h 44m

Denver Intl

Fri 9/26

12:05 pm-8:00 am

1 stop12h 55m

$771

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 11/22

10:30 am-11:03 pm

1 stop19h 33m

Denver Intl

Sat 11/29

5:25 pm-2:50 pm

1 stop14h 25m

$827

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 9/26

10:00 am-10:35 pm

1 stop19h 35m

Denver Intl

Mon 10/6

7:05 am-8:00 am

1 stop17h 55m

$831

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 8/18

8:15 pm-11:49 pm

2 stops34h 34m

Denver Intl

Tue 8/26

7:20 am-4:10 pm

2 stops25h 50m

$922

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 8/19

5:55 am-5:55 pm

1 stop19h 00m

Denver Intl

Sat 8/23

7:50 pm-9:55 am

1 stop31h 05m

$1,018

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 8/17

5:05 am-3:35 pm

1 stop17h 30m

Denver Intl

Tue 8/26

5:40 pm-9:20 am

1 stop32h 40m

$1,037

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sat 9/13

12:35 pm-10:37 am

2 stops29h 02m

Denver Intl

Sat 9/20

11:25 am-1:15 am

2 stops30h 50m

$1,207

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 24 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 August 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.

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 August 1, 2025.
See what other customers who have flown with Delta, KLM, and Air France 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
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 ($617), TAP AIR PORTUGAL ($663), and British Airways ($746).

  • 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 August 1, 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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