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$379+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — OPO
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Colorado to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$579
(FlightHub)
From Colorado to Porto
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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 January 21, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/258:35 pmDEN - OPO
1 stop36h 45mTurkish Airlines
Wed 4/210:45 amOPO - DEN
1 stop38h 25mTurkish Airlines
Deal found 1/21$579
This Air Canada 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 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 stops18h 15mAir Canada
Wed 4/26:00 amOPO - DEN
2 stops33h 51mAir Canada
Deal found 1/20$690
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/175:45 pmDEN - OPO
1 stop14h 40mLufthansa
Thu 3/136:00 amOPO - DEN
2 stops24h 30mLufthansa
Deal found 1/21$693
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1711:15 amDEN - OPO
2 stops18h 35mMultiple Airlines
Thu 3/136:00 amOPO - DEN
2 stops21h 58mMultiple Airlines
Deal found 1/21$695
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2411:25 amDEN - OPO
2 stops17h 10mUnited Airlines
Fri 3/76:00 amOPO - DEN
1 stop16h 55mUnited Airlines
Deal found 1/21$703
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:02 pmDEN - OPO
2 stops19h 53mIberia
Sun 11/28:20 amOPO - DEN
2 stops22h 17mIberia
Deal found 1/20$841
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2111:25 amDEN - OPO
2 stops21h 35mBrussels Airlines
Sun 3/3012:35 pmOPO - DEN
1 stop36h 35mBrussels Airlines
Deal found 1/21$907
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/184:10 pmDEN - OPO
2 stops16h 25mKLM
Sat 4/266:40 amOPO - DEN
2 stops23h 47mKLM
Deal found 1/21$1,201
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:41 pmDEN - OPO
2 stops27h 04mTAP AIR PORTUGAL
Sun 9/219:00 amOPO - DEN
2 stops31h 20mTAP AIR PORTUGAL
Deal found 1/21$1,215
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1911:20 amDEN - OPO
2 stops23h 35mAustrian Airlines
Sun 4/276:45 pmOPO - DEN
2 stops30h 55mAustrian Airlines
Deal found 1/21$1,366
This AranGrant 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/206:35 pmDEN - OPO
1 stop18h 50mBritish Airways
Wed 4/3012:20 pmOPO - DEN
2 stops18h 34mBritish Airways
Deal found 1/20$1,711

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/25

8:35 pm-3:20 pm

1 stop36h 45m

Porto

Wed 4/2

10:45 am-6:10 pm

1 stop38h 25m

$579

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/25

11:25 am-11:40 am

2 stops18h 15m

Porto

Wed 4/2

6:00 am-8:51 am

2 stops33h 51m

$690

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/17

5:45 pm-3:25 pm

1 stop14h 40m

Porto

Thu 3/13

6:00 am-12:30 am

2 stops24h 30m

$693

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/17

11:15 am-12:50 pm

2 stops18h 35m

Porto

Thu 3/13

6:00 am-9:58 pm

2 stops21h 58m

$695

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/24

11:25 am-11:35 am

2 stops17h 10m

Porto

Fri 3/7

6:00 am-3:55 pm

1 stop16h 55m

$703

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 3/21

11:25 am-3:00 pm

2 stops21h 35m

Porto

Sun 3/30

12:35 pm-6:10 pm

1 stop36h 35m

$907

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 4/18

4:10 pm-3:35 pm

2 stops16h 25m

Porto

Sat 4/26

6:40 am-11:27 pm

2 stops23h 47m

$1,201

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 4/19

11:20 am-5:55 pm

2 stops23h 35m

Porto

Sun 4/27

6:45 pm-6:40 pm

2 stops30h 55m

$1,366

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 6/6

1:30 pm-11:40 pm

2 stops27h 10m

Porto

Sat 6/14

11:45 pm-10:14 am

2 stops41h 29m

$1,573

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 4/20

6:35 pm-8:25 pm

1 stop18h 50m

Porto

Wed 4/30

12:20 pm-11:54 pm

2 stops18h 34m

$1,711

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 18 results
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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 $1,083). 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 January 21, 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 January 21, 2025.
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,341 reviews
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
786 reviews
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,600 reviews
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,984 reviews
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Turkish Airlines
7.3
Good
3,931 reviews
KLM
7.8
Good
1,341 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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?

    $2,271 is the cheapest one-way deal found within the past few days, from SWISS. You may also be able to find cheap deals on Lufthansa and Brussels Airlines, with prices starting from $2,273 and $2,286, 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 $1,083). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$516Average$1,095FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$544Average$659FlexibilityNo cancel feeOn-time77%
DeltaCheapest$562Average$1,052FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$620Average$1,041FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$788Average$1,286FlexibilityNo cancel feeOn-time69%
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