How long is the flight from Porto to Denver?

Airlines like TAP AIR PORTUGAL fly from Porto to Denver in about 35h 42m. The time it takes to get you to your destination can typically vary by up to . There are 4747 mi between Porto and Denver.

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

The cheapest airlines for a one-way flight from Porto to Denver are Turkish Airlines ($732), Lufthansa ($796), and United Airlines ($1,008).

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

If weather is an important factor for your trip to Denver, 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 30.2 F).

What is the cheapest time of day to fly from OPO to DEN?

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

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

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

How can I find direct flights from Porto to Denver?

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

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

Yes. Cheapflights offers flight deals from Porto to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$453+ Cheap Flights from Porto to Denver

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Cheap flight deals from Porto to Denver

Cheapest

Best

Last-minute

One-way

Cheapest flights from Porto to Denver
Explore the most affordable flight options available from Porto to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.

Sun 12/65:55 am -

2 stops19h 05m

Sun 12/133:40 pm -

2 stops23h 15m

Deal found 11/7

$850

Sun 12/65:45 pm -

1 stop35h 42m

Sun 12/132:38 pm -

1 stop12h 57m

Deal found 11/7

$948

Thu 11/195:00 am -

2 stops22h 11m

Tue 12/18:15 am -

2 stops19h 20m

Deal found 11/7

$985

Best flights from Porto to Denver
Discover carefully curated flight deals from Porto to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.

Sun 12/65:55 am -

2 stops19h 05m

Sun 12/133:40 pm -

3 stops22h 35m

Deal found 11/7

$874

Sun 12/65:45 pm -

1 stop35h 42m

Sun 12/132:38 pm -

1 stop12h 57m

Deal found 11/7

$948

Thu 11/195:00 am -

2 stops22h 11m

Tue 12/18:15 am -

2 stops19h 20m

Deal found 11/7

$985

Thu 11/1910:15 am -

1 stop17h 10m

Tue 12/111:13 am -

2 stops16h 22m

Deal found 11/5

$1,009

Mon 12/2112:30 pm -

2 stops18h 23m

Mon 12/2811:59 pm -

2 stops26h 31m

Deal found 11/6

$1,030

Sun 12/65:00 am -

2 stops22h 19m

Sun 12/137:05 am -

2 stops20h 30m

Deal found 11/5

$991

Thu 11/196:00 am -

1 stop16h 35m

Tue 12/15:25 pm -

1 stop14h 45m

Deal found 11/5

$1,042

One-way flights from Porto to Denver
Search for one-way flight options from Porto to Denver. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.

Tue 12/86:05 pm -

2 stops43h 24m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/7

$453

Fri 4/306:50 pm -

2 stops47h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/8

$539

Sat 5/16:10 pm -

2 stops48h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/8

$558

Tue 11/178:40 pm -

3 stops52h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/5

$576

Sun 3/287:35 pm -

2 stops57h 38m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/6

$636

Mon 3/2912:35 pm -

2 stops40h 38m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/7

$637

Find flight deals from Porto to Denver

Round-trip from	$850 (Mytrip)
One-way from	$453 (Kiwi.com)
Popular in	March
Cheapest in	April

From Porto to Denver Intl

Search Deals

One-way flight from Porto to Denver Intl

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($140 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($69 potential savings vs. average RT price).

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Tue 12/8

6:05 pm-6:29 am

2 stops43h 24m

Denver Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$453

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Sat 5/1

6:10 pm-11:20 am

2 stops48h 10m

Denver Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$558

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Mon 3/29

12:35 pm-10:13 pm

2 stops40h 38m

Denver Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$637

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Sun 3/28

7:35 pm-10:13 pm

2 stops57h 38m

Denver Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$637

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Tue 11/17

6:30 am-8:29 am

2 stops32h 59m

Denver Intl

Wed 12/31

12:00 am-8:00 am

Nonstop0h 00m

$640

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Sun 12/6

5:55 am-6:00 pm

2 stops19h 05m

Denver Intl

Sun 12/13

3:40 pm-9:15 pm

3 stops22h 35m

$874

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Sun 12/6

5:45 pm-10:27 pm

1 stop35h 42m

Denver Intl

Sun 12/13

2:38 pm-10:35 am

1 stop12h 57m

$948

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Thu 11/19

5:00 am-8:11 pm

2 stops22h 11m

Denver Intl

Tue 12/1

8:15 am-10:35 am

2 stops19h 20m

$985

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Sun 12/6

5:00 am-8:19 pm

2 stops22h 19m

Denver Intl

Sun 12/13

7:05 am-10:35 am

2 stops20h 30m

$991

PortoDenver

OPO Porto - DEN Denver Intl

OPODEN

Porto

Thu 11/19

10:15 am-8:25 pm

1 stop17h 10m

Denver Intl

Tue 12/1

11:13 am-10:35 am

2 stops16h 22m

$1,009

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/7

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from Porto to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Porto with our price prediction graph.

OPO-DEN

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.

Related info for your journey

How long is the flight from Porto to Denver?
Airlines like TAP AIR PORTUGAL fly from Porto to Denver in about 35h 42m. The time it takes to get you to your destination can typically vary by up to . There are 4747 mi between Porto and Denver.
What are the cheapest airlines to fly from Porto to Denver one-way?
The cheapest airlines for a one-way flight from Porto to Denver are Turkish Airlines ($732), Lufthansa ($796), and United Airlines ($1,008).
Can I find deals for flights from Porto to Denver that include hotel bookings?
Yes. In addition to deals on Porto to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Porto to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Denver.
Can I find deals for business class flights from Porto to Denver?
Yes. Cheapflights offers flight deals from Porto to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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$453+ Cheap flights from Porto (OPO) to Denver (DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Porto to Denver with Cheapflights

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3. Compare prices and book

Cheap flight deals from Porto to Denver

Cheapest flights from Porto to DenverExplore the most affordable flight options available from Porto to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.

Explore the most affordable flight options available from Porto to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.

Best flights from Porto to DenverDiscover carefully curated flight deals from Porto to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.

Discover carefully curated flight deals from Porto to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.

Last-minute flights from Porto to DenverDiscover last-minute flight deals from Porto to Denver. Data last updated November 9, 2026 and is based on user searches.

Discover last-minute flight deals from Porto to Denver. Data last updated November 9, 2026 and is based on user searches.

One-way flights from Porto to DenverSearch for one-way flight options from Porto to Denver. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.

Search for one-way flight options from Porto to Denver. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.

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Best time to book a flight from Porto to Denver

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Related info for your journey

How long is the flight from Porto to Denver?

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

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

How can I find direct flights from Porto to Denver?

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

Traveling to a place near Denver?

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Porto and Denver flights

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Cheapest flights from Porto to Denver
Explore the most affordable flight options available from Porto to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.

Best flights from Porto to Denver
Discover carefully curated flight deals from Porto to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.

Last-minute flights from Porto to Denver
Discover last-minute flight deals from Porto to Denver. Data last updated November 9, 2026 and is based on user searches.

One-way flights from Porto to Denver
Search for one-way flight options from Porto to Denver. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.