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Cheap flights from Colorado to Porto from $326

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Porto departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Colorado to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
4:20 pm - 1:15 pmDEN-OPO
13h 55m1 stop
Lufthansa Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$530Lufthansa
Find Deal
Wed, Dec 3 - Wed, Dec 10
Lufthansa Logo
5:35 pm - 10:25 pmDEN-OPO
21h 50m2 stops
Lufthansa Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$580Lufthansa
Find Deal
Wed, Dec 3 - Wed, Dec 10
Multiple Airlines Logo
11:15 am - 12:05 pmDEN-OPO
17h 50m2 stops
Multiple Airlines Logo
6:00 am - 4:40 pmOPO-DEN
41h 40m2 stops
$583Multiple Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Lufthansa Logo
4:20 pm - 12:50 pmDEN-OPO
13h 30m1 stop
Lufthansa Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$610Lufthansa
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
11:15 am - 11:40 amDEN-OPO
17h 25m2 stops
Multiple Airlines Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$618Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Air Canada Logo
11:15 am - 12:05 pmDEN-OPO
17h 50m2 stops
Air Canada Logo
6:00 am - 8:53 amOPO-DEN
33h 53m2 stops
$626Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
6:23 pm - 10:30 amDEN-OPO
33h 07m2 stops
Delta Logo
6:00 am - 10:26 amOPO-DEN
35h 26m2 stops
$680Delta
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Mon, Dec 29 - Wed, Jan 14
Turkish Airlines Logo
7:20 pm - 9:55 amDEN-OPO
31h 35m1 stop
Turkish Airlines Logo
4:10 pm - 5:35 pmOPO-DEN
32h 25m1 stop
$700Turkish Airlines
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Tue, Dec 2 - Wed, Dec 10
Turkish Airlines Logo
7:20 pm - 3:10 pmDEN-OPO
36h 50m1 stop
Turkish Airlines Logo
10:55 am - 5:35 pmOPO-DEN
37h 40m1 stop
$734Turkish Airlines
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Sat, Nov 29 - Mon, Dec 8
Delta Logo
6:46 am - 10:30 amDEN-OPO
20h 44m2 stops
Delta Logo
6:30 am - 10:53 pmOPO-DEN
23h 23m2 stops
$740Delta
Find Deal
Wed, Dec 3 - Fri, Dec 12

Lufthansa flights from Colorado to Porto

Our best Lufthansa deals on Colorado to Porto flight tickets
Lufthansa
Dec 3
DEN4:20 pmDenver Intl
13h 55m
1 stop
OPO1:15 pmPorto
Dec 10
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$530
Find similar
Lufthansa
Dec 3
DEN5:35 pmDenver Intl
21h 50m
2 stops
OPO10:25 pmPorto
Dec 10
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$580
Find similar
Lufthansa
Dec 4
DEN4:20 pmDenver Intl
13h 30m
1 stop
OPO12:50 pmPorto
Dec 11
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$610
Find similar

Air Canada flights from Colorado to Porto

Our best Air Canada deals on Colorado to Porto flight tickets
Air Canada
Dec 4
DEN11:15 amDenver Intl
17h 50m
2 stops
OPO12:05 pmPorto
Dec 11
OPO6:00 amPorto
33h 53m
2 stops
DEN8:53 amDenver Intl
$626
Find similar
Air Canada
Nov 19
DEN8:45 amDenver Intl
19h 55m
2 stops
OPO11:40 amPorto
Nov 29
OPO6:00 amPorto
33h 53m
2 stops
DEN8:53 amDenver Intl
$1,327
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Colorado to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 12/3

4:20 pm-1:15 pm

1 stop13h 55m

Porto

Wed 12/10

6:00 am-4:00 pm

1 stop17h 00m

$530

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 12/3

5:35 pm-10:25 pm

2 stops21h 50m

Porto

Wed 12/10

6:00 am-4:00 pm

1 stop17h 00m

$580

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 12/3

11:15 am-12:05 pm

2 stops17h 50m

Porto

Wed 12/10

6:00 am-4:40 pm

2 stops41h 40m

$583

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 12/4

4:20 pm-12:50 pm

1 stop13h 30m

Porto

Thu 12/11

6:00 am-4:00 pm

1 stop17h 00m

$610

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 12/4

11:15 am-11:40 am

2 stops17h 25m

Porto

Thu 12/11

6:00 am-4:00 pm

1 stop17h 00m

$618

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 12/4

11:15 am-12:05 pm

2 stops17h 50m

Porto

Thu 12/11

6:00 am-8:53 am

2 stops33h 53m

$626

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 12/29

6:23 pm-10:30 am

2 stops33h 07m

Porto

Wed 1/14

6:00 am-10:26 am

2 stops35h 26m

$680

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 12/2

7:20 pm-9:55 am

1 stop31h 35m

Porto

Wed 12/10

4:10 pm-5:35 pm

1 stop32h 25m

$700

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 11/29

7:20 pm-3:10 pm

1 stop36h 50m

Porto

Mon 12/8

10:55 am-5:35 pm

1 stop37h 40m

$734

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 12/3

6:46 am-10:30 am

2 stops20h 44m

Porto

Fri 12/12

6:30 am-10:53 pm

2 stops23h 23m

$740

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Colorado to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Colorado, with most prices found around $764. If you aren’t able to travel during the month of February, then book flights to Porto from Colorado during March instead. Flights to Porto in March, while not as cheap as those in February, still average around $789.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $1,053. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,233. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from Colorado to Porto when you can find flight prices for as low as $982. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,448 on average. Flights to Porto from Colorado at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $971 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Colorado for as low as $788 on momondo.

Can stopping save me money on Colorado to Porto flights?

You could potentially save up to 17% on your flight if you consider stops on a Colorado to Porto flight.

Cheap Colorado to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Porto

Direct flights

None
There are no direct flights from Colorado to Porto. There are no popular flight routes from Colorado to Porto.
Search flight deals

  • When did momondo last update prices for flights from Colorado to Porto Airport?

    Prices for flights from Colorado to Porto Airport refresh daily.

  • How many operators does momondo search for flights from Colorado to Porto Airport?

  • How old do you have to be to fly from Colorado to Porto Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Porto

Compare and see reviews for airlines that fly from Colorado to Porto with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $574Free CancellationRating
7.3
4,031 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
United AirlinesPriceFrom $721Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Aveiro
Matosinhos
Braga
Lamego
Guimarães
Esposende
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from Colorado.

Can I find flights from Colorado to Porto with flexible booking policies on momondo?

All flight searches from Colorado to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Colorado to Porto?

Once all potential Colorado to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado to Porto right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Colorado to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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