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$404+ Cheap flights from Colorado to Porto (OPO)

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — OPO
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
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Cheap flight deals from Colorado to Porto

Keep the following information in mind while searching for Colorado to Porto flight deals. Data was last updated February 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$574
(Justfly.com)

One-way from

$404
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$764
Provider with most accurate pricing for Denver Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Porto flights.
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From Colorado to Porto
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One-way flight from Colorado to Porto
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Highest demand for flights based on searches. 22% potential increase in price ($312 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($49 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 Porto

Cheapest flights from Colorado to Porto
Explore the most affordable flight options available from Colorado to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.

This FlightHub deal was found by Cheapflights users on 2/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/258:35 pmDEN - OPO
1 stop31h 25mTurkish Airlines
Wed 4/24:50 pmOPO - DEN
1 stop32h 05mTurkish Airlines
Deal found 2/22$574
This Air Canada deal was found by Cheapflights users on 2/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2611:15 amDEN - OPO
2 stops18h 25mMultiple Airlines
Thu 4/36:00 amOPO - DEN
2 stops35h 27mMultiple Airlines
Deal found 2/21$638
This Lufthansa deal was found by Cheapflights users on 2/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:25 pmDEN - OPO
1 stop13h 25mLufthansa
Thu 4/36:00 amOPO - DEN
1 stop16h 55mLufthansa
Deal found 2/21$642
This KLM deal was found by Cheapflights users on 2/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/244:49 pmDEN - OPO
2 stops16h 36mKLM
Mon 3/316:35 amOPO - DEN
2 stops20h 14mKLM
Deal found 2/22$645
This United deal was found by Cheapflights users on 2/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1911:48 amDEN - OPO
2 stops17h 52mUnited Airlines
Wed 4/26:00 amOPO - DEN
1 stop14h 35mUnited Airlines
Deal found 2/22$648
This Delta deal was found by Cheapflights users on 2/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:40 amDEN - OPO
2 stops20h 50mDelta
Sat 11/15:00 amOPO - DEN
2 stops21h 22mDelta
Deal found 2/22$804
This Expedia deal was found by Cheapflights users on 2/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:33 amDEN - OPO
2 stops21h 07mIberia
Fri 10/108:15 amOPO - DEN
2 stops22h 23mIberia
Deal found 2/22$813
This Booking.com deal was found by Cheapflights users on 2/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:15 amDEN - OPO
2 stops20h 15mAir Canada
Tue 9/3012:15 pmOPO - DEN
2 stops42h 03mAir Canada
Deal found 2/22$836
This Ovago deal was found by Cheapflights users on 2/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/712:59 pmDEN - OPO
2 stops45h 06mScandinavian Airlines
Wed 5/1412:15 pmOPO - DEN
2 stops41h 46mScandinavian Airlines
Deal found 2/22$896
This FlightHub deal was found by Cheapflights users on 2/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/181:30 pmDEN - OPO
1 stop14h 25mTAP AIR PORTUGAL
Wed 5/286:05 pmOPO - DEN
2 stops34h 37mTAP AIR PORTUGAL
Deal found 2/22$1,281
This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/185:50 pmDEN - OPO
1 stop17h 25mSWISS
Wed 5/288:40 amOPO - DEN
1 stop14h 40mSWISS
Deal found 2/22$1,347

Find flights from Colorado to Porto within your budget

Customize your flight search to find flights from Colorado to Porto 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 23, 2025.

Fly from

Colorado

Fly to

Porto

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/25

8:35 pm-10:00 am

1 stop31h 25m

Porto

Wed 4/2

4:50 pm-5:55 pm

1 stop32h 05m

$574

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/26

11:15 am-11:40 am

2 stops18h 25m

Porto

Thu 4/3

6:00 am-10:27 am

2 stops35h 27m

$638

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/26

5:25 pm-12:50 pm

1 stop13h 25m

Porto

Thu 4/3

6:00 am-3:55 pm

1 stop16h 55m

$642

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 3/24

4:49 pm-3:25 pm

2 stops16h 36m

Porto

Mon 3/31

6:35 am-7:49 pm

2 stops20h 14m

$645

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/19

11:48 am-11:40 am

2 stops17h 52m

Porto

Wed 4/2

6:00 am-1:35 pm

1 stop14h 35m

$648

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 5/7

12:59 pm-5:05 pm

2 stops45h 06m

Porto

Wed 5/14

12:15 pm-11:01 pm

2 stops41h 46m

$896

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 3/21

11:44 am-3:15 pm

2 stops21h 31m

Porto

Sun 3/30

8:40 am-10:20 am

2 stops32h 40m

$1,240

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 5/18

1:30 pm-10:55 am

1 stop14h 25m

Porto

Wed 5/28

6:05 pm-9:42 pm

2 stops34h 37m

$1,281

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 5/18

5:50 pm-6:15 pm

1 stop17h 25m

Porto

Wed 5/28

8:40 am-4:20 pm

1 stop14h 40m

$1,347

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 5/18

12:30 am-1:15 pm

3 stops29h 45m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 17 results
1
2

Best time to book a flight from Colorado to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Porto (average of $523). Flying from Colorado to Porto in June is currently the most expensive (average of $1,092). 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 OPO?

Find hourly flight availability from Colorado to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 23, 2025.

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

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated February 23, 2025.
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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
1,332 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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
1,447 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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
8,754 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Colorado?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Colorado to Porto.

  • What are the cheapest airlines to fly from Colorado to Porto one-way?

    $699 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Air France and SWISS, with prices starting from $720 and $721, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Porto (average of $523). Flying from Colorado to Porto in June is currently the most expensive (average of $1,092). 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

Traveling to a place near Colorado?

Book flights to Colorado if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for Colorado to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Colorado to Porto

Discover the top 5 airlines that operate flights from Colorado to Porto. 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$516Average$1,052FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$544Average$659FlexibilityNo cancel feeOn-time77%
DeltaCheapest$562Average$1,081FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$641Average$1,012FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$738Average$1,207FlexibilityNo cancel feeOn-time69%
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