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Portugal

$313+ Cheap flights from Colorado to Portugal

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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Colorado to Portugal

Keep the following information in mind while searching for Colorado to Portugal flight deals. Data was last updated June 18, 2025.

Round-trip from

$599
(Mytrip)

One-way from

$313
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,411
From Colorado to Portugal
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One-way flight from Colorado to Portugal
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Highest demand for flights based on searches. 16% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Colorado to Portugal

Cheapest flights from Colorado to Portugal
Explore the most affordable flight options available from Colorado to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This Mytrip deal was found by Cheapflights users on 6/18. 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 10/2811:15 amDEN - OPO
2 stops21h 30mMultiple Airlines
Fri 11/76:15 amOPO - DEN
1 stop15h 20mMultiple Airlines
Deal found 6/18$599
This Lufthansa deal was found by Cheapflights users on 6/17. 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.
Tue 10/285:20 pmDEN - OPO
1 stop13h 30mLufthansa
Fri 11/712:30 pmOPO - DEN
2 stops17h 45mLufthansa
Deal found 6/17$607
This Iberia deal was found by Cheapflights users on 6/18. 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 10/289:05 amDEN - OPO
2 stops16h 35mIberia
Fri 11/78:20 amOPO - DEN
2 stops18h 38mIberia
Deal found 6/18$608
This Air Canada deal was found by Cheapflights users on 6/18. 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.
Mon 10/1311:35 amDEN - OPO
2 stops21h 10mAir Canada
Tue 10/216:00 amOPO - DEN
2 stops33h 42mAir Canada
Deal found 6/18$681
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 10/97:55 pmDEN - FAO
1 stop17h 00mMultiple Airlines
Wed 10/229:05 amFAO - DEN
1 stop15h 54mMultiple Airlines
Deal found 6/16$719
This United Airlines deal was found by Cheapflights users on 6/17. 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 9/249:40 amDEN - OPO
1 stop16h 40mUnited Airlines
Fri 10/36:00 amOPO - DEN
1 stop14h 35mUnited Airlines
Deal found 6/17$735
This Justfly.com deal was found by Cheapflights users on 6/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:55 pmDEN - FAO
1 stop16h 05mAer Lingus
Thu 10/2311:45 amFAO - DEN
2 stops17h 42mAer Lingus
Deal found 6/16$756
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/102:08 pmDEN - PDL
1 stop12h 32mUnited Airlines
Thu 7/1711:00 amPDL - DEN
1 stop14h 15mUnited Airlines
Deal found 6/18$756
This Lufthansa deal was found by Cheapflights users on 6/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:15 pmDEN - FAO
1 stop15h 50mLufthansa
Thu 10/233:55 pmFAO - DEN
1 stop28h 50mLufthansa
Deal found 6/16$776
This United Airlines deal was found by Cheapflights users on 6/17. 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 9/233:50 pmDEN - FAO
1 stop13h 45mUnited Airlines
Mon 10/133:25 pmFAO - DEN
2 stops35h 54mUnited Airlines
Deal found 6/17$789
This United Airlines deal was found by Cheapflights users on 6/18. 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 10/912:40 pmASE - LIS
2 stops15h 25mUnited Airlines
Thu 10/305:00 amLIS - ASE
2 stops19h 28mUnited Airlines
Deal found 6/18$824
This British Airways deal was found by Cheapflights users on 6/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:35 pmDEN - FAO
1 stop17h 35mBritish Airways
Thu 10/231:20 pmFAO - DEN
1 stop34h 05mBritish Airways
Deal found 6/16$825

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado to Portugal 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 June 18, 2025.
Use the filters below to find and compare flights from Colorado to Portugal that are best for you.

Fly from

Colorado

Fly to

Portugal

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 9/3

9:40 am-4:15 pm

3 stops23h 35m

Porto

Tue 9/9

10:25 pm-4:33 pm

2 stops25h 08m

$616

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Thu 10/9

7:55 pm-7:55 pm

1 stop17h 00m

Faro

Wed 10/22

9:05 am-5:59 pm

1 stop15h 54m

$719

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 8/11

7:50 am-9:35 am

2 stops18h 45m

Porto

Wed 8/20

6:00 am-10:27 pm

2 stops23h 27m

$739

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 8/13

7:45 am-9:20 am

2 stops18h 35m

Porto

Fri 8/22

6:15 am-10:21 am

2 stops35h 06m

$752

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 10/12

7:55 pm-7:00 pm

1 stop16h 05m

Faro

Thu 10/23

11:45 am-10:27 pm

2 stops17h 42m

$756

DenverPonta Delgada

DEN - PDL

DENPDL

Denver Intl

Thu 7/10

2:08 pm-8:40 am

1 stop12h 32m

Ponta Delgada Nordela

Thu 7/17

11:00 am-7:15 pm

1 stop14h 15m

$756

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 8/11

4:15 pm-11:20 pm

1 stop24h 05m

Porto

Wed 8/20

6:15 am-1:45 pm

1 stop14h 30m

$767

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 10/8

4:15 pm-3:05 pm

1 stop15h 50m

Faro

Thu 10/23

3:55 pm-1:45 pm

1 stop28h 50m

$776

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Tue 9/23

3:50 pm-12:35 pm

1 stop13h 45m

Faro

Mon 10/13

3:25 pm-8:19 pm

2 stops35h 54m

$789

AspenLisbon

ASE - LIS

ASELIS

Aspen Pitkin County

Thu 10/9

12:40 pm-11:05 am

2 stops15h 25m

Lisbon Humberto Delgado

Thu 10/30

5:00 am-6:28 pm

2 stops19h 28m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Colorado 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 Colorado to Portugal

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Portugal (average of $612). Flying from Colorado to Portugal in June is currently the most expensive (average of $1,135). 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 CO to PT?

Find hourly flight availability from Colorado to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Portugal as you normally would.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated June 18, 2025.
Read through reviews of airlines operating flights from Colorado to Portugal, such as Delta, KLM and Air France. 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
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,364 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,467 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,632 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,810 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Colorado to Portugal. 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 Colorado to Portugal one-way?

    The cheapest airlines for a one-way flight from Colorado to Portugal are Icelandair ($366), Aer Lingus ($485), and United Airlines ($491).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado to Portugal 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 Colorado to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Colorado to Portugal (average of $612). Flying from Colorado to Portugal in June is currently the most expensive (average of $1,135). 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 Colorado to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Colorado to Portugal

Discover the top 10 airlines that operate flights from Colorado to Portugal. 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$676FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$490Average$1,007FlexibilityNo cancel feeOn-time69%
KLMCheapest$516Average$817FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$539Average$1,193FlexibilityNo cancel feeOn-time72%
DeltaCheapest$551Average$1,061FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$555Average$686FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$559Average$941FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$569Average$896FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$624Average$1,046FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$627Average$953FlexibilityNo cancel feeOn-time67%

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