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Portugal

$264+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$574
(FlightHub)

One-way from

$264
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$776
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
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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. 21% potential increase in price ($290 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This FlightHub deal was found by Cheapflights users on 2/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/98:35 pmDEN - OPO
1 stop36h 35mTurkish Airlines
Sun 3/164:30 pmOPO - DEN
1 stop32h 10mTurkish Airlines
Deal found 2/19$574
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Mon 3/246:45 pmDEN - OPO
2 stops21h 40mMultiple Airlines
Wed 4/210:00 pmOPO - DEN
2 stops23h 20mMultiple Airlines
Deal found 2/20$623
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Tue 3/2511:25 amDEN - OPO
2 stops21h 50mAir Canada
Wed 4/26:00 amOPO - DEN
2 stops35h 20mAir Canada
Deal found 2/20$638
This Lufthansa deal was found by Cheapflights users on 2/20. 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 3/196:45 pmDEN - OPO
1 stop14h 30mLufthansa
Wed 4/26:15 amOPO - DEN
1 stop15h 05mLufthansa
Deal found 2/20$643
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/2411:25 amDEN - OPO
2 stops18h 10mUnited Airlines
Wed 4/26:00 amOPO - DEN
1 stop16h 55mUnited Airlines
Deal found 2/20$644
This KLM deal was found by Cheapflights users on 2/19. 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.
Tue 3/253:50 pmDEN - OPO
1 stop12h 45mKLM
Tue 4/16:20 amOPO - DEN
2 stops17h 56mKLM
Deal found 2/19$648
This Expedia deal was found by Cheapflights users on 2/20. 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.
Thu 3/2012:35 pmCOS - LIS
2 stops20h 10mMultiple Airlines
Thu 3/278:20 amLIS - COS
2 stops21h 27mMultiple Airlines
Deal found 2/20$676
This FlightHub deal was found by Cheapflights users on 2/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/274:40 pmDEN - LIS
1 stop21h 40mIcelandair
Thu 4/310:20 pmLIS - DEN
1 stop27h 35mIcelandair
Deal found 2/20$709
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/111:25 pmDEN - LIS
1 stop23h 25mMultiple Airlines
Wed 4/910:40 amLIS - DEN
2 stops24h 16mMultiple Airlines
Deal found 2/20$733
This oojo deal was found by Cheapflights users on 2/20. 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.
Fri 2/287:35 pmDEN - LIS
1 stop31h 30mTurkish Airlines
Sat 3/811:35 amLIS - DEN
1 stop37h 05mTurkish Airlines
Deal found 2/20$735
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:40 amDEN - LIS
1 stop16h 40mUnited Airlines
Thu 11/611:00 amLIS - DEN
1 stop30h 35mUnited Airlines
Deal found 2/19$740
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 3/256:45 pmDEN - LIS
1 stop14h 20mLufthansa
Wed 4/26:15 amLIS - DEN
2 stops22h 30mLufthansa
Deal found 2/20$757

Find flights from Colorado to Portugal within your budget

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 February 20, 2025.

Fly from

Colorado

Fly to

Portugal

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 3/9

8:35 pm-3:10 pm

1 stop36h 35m

Porto

Sun 3/16

4:30 pm-6:40 pm

1 stop32h 10m

$574

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 3/24

6:45 pm-10:25 pm

2 stops21h 40m

Porto

Wed 4/2

10:00 pm-2:20 pm

2 stops23h 20m

$623

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/25

11:25 am-3:15 pm

2 stops21h 50m

Porto

Wed 4/2

6:00 am-10:20 am

2 stops35h 20m

$638

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/19

6:45 pm-3:15 pm

1 stop14h 30m

Porto

Wed 4/2

6:15 am-2:20 pm

1 stop15h 05m

$643

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 3/24

11:25 am-11:35 am

2 stops18h 10m

Porto

Wed 4/2

6:00 am-3:55 pm

1 stop16h 55m

$644

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/25

3:50 pm-10:35 am

1 stop12h 45m

Porto

Tue 4/1

6:20 am-5:16 pm

2 stops17h 56m

$648

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

Thu 3/20

12:35 pm-2:45 pm

2 stops20h 10m

Lisbon Humberto Delgado

Thu 3/27

8:20 am-11:47 pm

2 stops21h 27m

$676

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 3/27

4:40 pm-8:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Thu 4/3

10:20 pm-6:55 pm

1 stop27h 35m

$709

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/1

11:25 pm-5:50 am

1 stop23h 25m

Lisbon Humberto Delgado

Wed 4/9

10:40 am-3:56 am

2 stops24h 16m

$733

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/1

11:59 pm-10:30 am

1 stop27h 31m

Lisbon Humberto Delgado

Tue 4/8

11:25 am-10:27 am

1 stop30h 02m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 54 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.

Travel insights for flights from Colorado to Portugal

Get recent, data-driven insights about flights from Colorado to Portugal including ideal travel times, pricing trends, and more.

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 $1,234). 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 February 20, 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 February 20, 2025.
Read through reviews of airlines operating flights from Colorado to Portugal, such as Delta, KLM and SWISS. 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
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 British Airways ($453), Air Canada ($454), and Delta ($458).

  • 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 $1,234). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$491Average$1,243FlexibilityNo cancel feeOn-time72%
KLMCheapest$516Average$948FlexibilityNo cancel feeOn-time75%
DeltaCheapest$538Average$1,011FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$539Average$908FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$544Average$671FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$550Average$1,019FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$552Average$930FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$583Average$654FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$594Average$1,105FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$597Average$1,105FlexibilityNo cancel feeOn-time69%
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