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Portugal

$195+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Feb 21 — Feb 281
Sat 2/21
Sat 2/28
1 adult, Economy
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Cheap 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 January 22, 2026.

This oojo deal was found by Cheapflights users on 1/21. 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.
Wed 2/43:40 pm
DEN
-
LIS
1 stop21h 40m
Icelandair
Thu 2/199:20 pm
LIS
-
DEN
1 stop27h 45m
Icelandair
Deal found 1/21$437
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Tue 3/2411:15 am
DEN
-
OPO
2 stops18h 50m
Multiple Airlines
Wed 4/16:20 am
OPO
-
DEN
1 stop15h 00m
Multiple Airlines
Deal found 1/20$445
This deal was found by Cheapflights users on 1/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/251:40 pm
DEN
-
OPO
1 stop12h 50m
United Airlines
Wed 3/412:35 pm
OPO
-
DEN
1 stop16h 21m
United Airlines
Deal found 1/21$446
This Travelocity deal was found by Cheapflights users on 1/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/105:25 pm
DEN
-
OPO
1 stop17h 20m
British Airways
Wed 2/258:20 am
OPO
-
DEN
2 stops21h 17m
British Airways
Deal found 1/20$448
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 3/37:45 am
DEN
-
OPO
2 stops18h 45m
United Airlines
Tue 3/1012:35 pm
OPO
-
DEN
2 stops17h 57m
United Airlines
Deal found 1/20$450
This United Airlines deal was found by Cheapflights users on 1/21. 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 4/217:45 am
DEN
-
OPO
2 stops19h 00m
United Airlines
Tue 5/56:00 am
OPO
-
DEN
1 stop16h 40m
United Airlines
Deal found 1/21$456
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Wed 2/1811:15 am
DEN
-
OPO
2 stops17h 50m
Multiple Airlines
Wed 2/256:00 am
OPO
-
DEN
2 stops35h 23m
Multiple Airlines
Deal found 1/20$458
This American Airlines deal was found by Cheapflights users on 1/22. 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 2/107:20 am
DEN
-
OPO
2 stops17h 20m
American Airlines
Wed 2/258:40 pm
OPO
-
DEN
2 stops18h 40m
American Airlines
Deal found 1/22$461
This FlightHub deal was found by Cheapflights users on 1/20. 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.
Tue 3/245:20 pm
DEN
-
OPO
1 stop13h 30m
Lufthansa
Wed 4/16:20 am
OPO
-
DEN
1 stop15h 00m
Lufthansa
Deal found 1/20$462
This British Airways deal was found by Cheapflights users on 1/21. 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.
Mon 4/1310:36 am
DEN
-
OPO
2 stops26h 14m
British Airways
Tue 5/512:25 pm
OPO
-
DEN
2 stops42h 34m
British Airways
Deal found 1/21$463
This Iberia deal was found by Cheapflights users on 1/21. 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 4/215:44 pm
DEN
-
OPO
2 stops19h 16m
Iberia
Tue 5/58:40 pm
OPO
-
DEN
2 stops33h 00m
Iberia
Deal found 1/21$471
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Mon 3/165:20 pm
DEN
-
LIS
1 stop14h 00m
Lufthansa
Wed 4/225:05 am
LIS
-
DEN
2 stops18h 19m
Lufthansa
Deal found 1/20$476

Find flight deals from Colorado to Portugal

Keep the following information in mind while searching for Colorado to Portugal flight deals. Data was last updated January 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$437
(oojo)

One-way from

$195
(British Airways)

Popular in

June

Cheapest in

November

Average price

$702
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
Search Deals
From Colorado to Portugal
Search Deals
One-way flight from Colorado to Portugal
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($191 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 22, 2026.
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

Tue 3/24

11:15 am-12:05 pm

2 stops18h 50m

Porto

Wed 4/1

6:20 am-2:20 pm

1 stop15h 00m

$445

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/10

5:25 pm-5:45 pm

1 stop17h 20m

Porto

Wed 2/25

8:20 am-10:37 pm

2 stops21h 17m

$448

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/21

7:45 am-9:45 am

2 stops19h 00m

Porto

Tue 5/5

6:00 am-3:40 pm

1 stop16h 40m

$456

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 4/13

6:40 pm-7:50 pm

1 stop18h 10m

Porto

Tue 5/5

12:25 pm-11:59 pm

2 stops42h 34m

$458

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/10

7:20 am-7:40 am

2 stops17h 20m

Porto

Wed 2/25

8:40 pm-8:20 am

2 stops18h 40m

$461

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/24

5:20 pm-12:50 pm

1 stop13h 30m

Porto

Wed 4/1

6:20 am-2:20 pm

1 stop15h 00m

$462

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 2/18

5:25 pm-4:45 pm

1 stop16h 20m

Porto

Wed 2/25

6:35 pm-3:30 pm

1 stop27h 55m

$482

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/17

7:20 pm-3:25 pm

2 stops37h 05m

Porto

Fri 2/27

12:45 pm-9:56 pm

1 stop16h 11m

$490

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/21

6:40 pm-9:05 am

1 stop31h 25m

Porto

Tue 5/5

8:40 pm-4:30 pm

1 stop26h 50m

$497

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/24

7:45 am-11:40 am

2 stops21h 55m

Porto

Wed 4/1

6:00 am-10:15 pm

2 stops23h 15m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 56 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, November is the cheapest month in which you can book a flight from Colorado to Portugal (average of $503). Flying from Colorado to Portugal in June is currently the most expensive (average of $857). 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.

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.

  • How long is the flight from Colorado to Portugal?

    A quick flight from Colorado to Portugal can take about 17h 20m. British Airways provides one of the quickest options available for as low as $448. Airlines will cover a distance of 4747 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 ($251), British Airways ($325), and Air France ($408).

  • 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, November is the cheapest month in which you can book a flight from Colorado to Portugal (average of $503). Flying from Colorado to Portugal in June is currently the most expensive (average of $857). 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 January 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$668FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$514Average$1,066FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$555Average$873FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$560Average$1,076FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$574Average$692FlexibilityNo cancel feeOn-time77%
DeltaCheapest$575Average$961FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$599Average$761FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$603Average$1,033FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$625Average$906FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$655Average$1,069FlexibilityNo cancel feeOn-time77%

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