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Portugal

$301+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$688
(Turkish Airlines)

One-way from

$301
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$958
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. 19% potential increase in price ($251 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 April 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 April 17, 2025.

This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:20 pmDEN - LIS
1 stop12h 40mDelta
Sat 11/15:00 amLIS - DEN
2 stops23h 46mDelta
Deal found 4/16$627
This Turkish Airlines deal was found by Cheapflights users on 4/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:50 pmDEN - OPO
1 stop30h 55mTurkish Airlines
Sat 10/184:50 pmOPO - DEN
1 stop32h 05mTurkish Airlines
Deal found 4/16$688
This Justfly.com deal was found by Cheapflights users on 4/16. 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.
Fri 10/247:50 pmDEN - LIS
1 stop37h 10mTurkish Airlines
Sat 11/14:00 pmLIS - DEN
1 stop32h 40mTurkish Airlines
Deal found 4/16$697
This Air Canada deal was found by Cheapflights users on 4/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/68:28 pmDEN - LIS
2 stops29h 52mAir Canada
Thu 10/2312:50 pmLIS - DEN
2 stops28h 28mAir Canada
Deal found 4/15$710
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/111:50 pmDEN - LIS
1 stop28h 25mUnited Airlines
Sun 11/1611:00 amLIS - DEN
2 stops32h 24mUnited Airlines
Deal found 4/16$713
This Virgin Atlantic deal was found by Cheapflights users on 4/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:20 amDEN - LIS
2 stops17h 40mVirgin Atlantic
Tue 4/2912:45 pmLIS - DEN
2 stops17h 55mVirgin Atlantic
Deal found 4/15$718
This FlightHub deal was found by Cheapflights users on 4/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/134:15 pmDEN - LIS
1 stop14h 25mMultiple Airlines
Wed 5/2111:25 amLIS - DEN
1 stop13h 55mMultiple Airlines
Deal found 4/15$720
This Iberia deal was found by Cheapflights users on 4/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/134:37 pmDEN - LIS
2 stops18h 48mIberia
Wed 5/216:35 amLIS - DEN
2 stops20h 41mIberia
Deal found 4/15$723
This Air Canada deal was found by Cheapflights users on 4/17. 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 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 stops20h 54mAir Canada
Deal found 4/17$730
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:25 pmDEN - OPO
1 stop14h 20mUnited Airlines
Sat 11/112:35 pmOPO - DEN
2 stops16h 43mUnited Airlines
Deal found 4/16$735
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:59 pmDEN - OPO
1 stop14h 46mMultiple Airlines
Tue 10/218:40 amOPO - DEN
2 stops18h 36mMultiple Airlines
Deal found 4/17$741
This KLM deal was found by Cheapflights users on 4/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:00 pmDEN - LIS
2 stops15h 35mKLM
Wed 10/225:00 amLIS - DEN
2 stops20h 09mKLM
Deal found 4/16$743

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 April 17, 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

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/22

7:20 am-8:00 am

2 stops17h 40m

Lisbon Humberto Delgado

Tue 4/29

12:45 pm-11:40 pm

2 stops17h 55m

$718

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 5/13

4:15 pm-1:40 pm

1 stop14h 25m

Lisbon Humberto Delgado

Wed 5/21

11:25 am-6:20 pm

1 stop13h 55m

$720

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 5/13

4:37 pm-6:25 pm

2 stops18h 48m

Lisbon Humberto Delgado

Wed 5/21

6:35 am-8:16 pm

2 stops20h 41m

$723

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 5/6

11:30 am-11:15 am

2 stops16h 45m

Lisbon Humberto Delgado

Wed 5/21

5:00 am-8:39 pm

2 stops22h 39m

$737

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 5/5

9:40 am-10:25 pm

2 stops29h 45m

Porto

Wed 5/21

7:15 am-6:20 pm

2 stops18h 05m

$769

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 5/7

4:15 pm-11:20 pm

1 stop24h 05m

Porto

Wed 5/14

6:15 am-1:45 pm

1 stop14h 30m

$777

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 5/10

4:40 pm-9:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sun 5/25

10:25 pm-12:30 pm

1 stop21h 05m

$779

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/28

4:05 pm-1:35 pm

1 stop14h 30m

Lisbon Humberto Delgado

Mon 5/5

7:30 am-3:35 pm

1 stop15h 05m

$786

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 5/6

6:35 pm-3:30 pm

1 stop13h 55m

Lisbon Humberto Delgado

Tue 5/20

11:05 am-9:53 pm

1 stop17h 48m

$813

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Tue 5/6

5:59 pm-4:30 pm

1 stop15h 31m

Funchal Madeira

Thu 5/15

6:05 pm-4:20 pm

1 stop29h 15m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 58 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 $1,203). 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 April 17, 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 April 17, 2025.
Read through reviews of airlines operating flights from Colorado to Portugal, 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
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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
1,329 reviews
Delta
8.0
Very good
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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
1,580 reviews
Delta
8.0
Very good
7,917 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

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 Icelandair ($373), Scandinavian Airlines ($560), and Aer Lingus ($577).

  • 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 $1,203). 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$464Average$654FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$491Average$1,243FlexibilityNo cancel feeOn-time72%
KLMCheapest$516Average$907FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$555Average$671FlexibilityNo cancel feeOn-time77%
DeltaCheapest$559Average$1,053FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$569Average$922FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$571Average$856FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$597Average$1,049FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$635Average$980FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$652Average$1,161FlexibilityNo cancel feeOn-time71%

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