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Cheap flights from Colorado to Porto from $517

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 3/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Turkish Airlines Logo
8:25 pm - 9:40 am
DEN
-
OPO
30h 15m1 stop
Turkish Airlines Logo
10:40 am - 6:25 pm
OPO
-
DEN
38h 45m1 stop
$662Turkish Airlines
Thu, Apr 16 - Mon, Apr 27
Multiple Airlines Logo
11:15 am - 9:15 pm
DEN
-
OPO
27h 00m2 stops
Multiple Airlines Logo
6:15 am - 7:55 pm
OPO
-
DEN
20h 40m2 stops
$663Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
Turkish Airlines Logo
7:20 pm - 9:55 am
DEN
-
OPO
31h 35m1 stop
Turkish Airlines Logo
10:55 am - 5:35 pm
OPO
-
DEN
37h 40m1 stop
$665Turkish Airlines
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
11:15 am - 9:25 pm
DEN
-
OPO
27h 10m3 stops
Multiple Airlines Logo
7:00 am - 7:55 pm
OPO
-
DEN
19h 55m2 stops
$671Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
1:40 pm - 9:30 am
DEN
-
OPO
13h 50m1 stop
United Airlines Logo
6:00 am - 3:35 pm
OPO
-
DEN
16h 35m1 stop
$675United Airlines
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
11:15 am - 1:15 pm
DEN
-
OPO
20h 00m2 stops
Multiple Airlines Logo
9:55 pm - 7:55 pm
OPO
-
DEN
28h 00m2 stops
$681Multiple Airlines
Thu, Mar 19 - Tue, Mar 24
United Airlines Logo
1:25 pm - 9:30 am
DEN
-
OPO
14h 05m2 stops
United Airlines Logo
6:00 am - 4:27 pm
OPO
-
DEN
17h 27m2 stops
$685United Airlines
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
11:15 am - 6:15 pm
DEN
-
OPO
24h 00m3 stops
Multiple Airlines Logo
6:15 am - 7:55 pm
OPO
-
DEN
20h 40m2 stops
$687Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
Lufthansa Logo
3:55 pm - 2:55 pm
DEN
-
OPO
16h 00m1 stop
Lufthansa Logo
6:00 am - 4:00 pm
OPO
-
DEN
17h 00m1 stop
$698Lufthansa
Mon, Feb 2 - Wed, Feb 18
Multiple Airlines Logo
11:15 am - 1:15 pm
DEN
-
OPO
20h 00m2 stops
Multiple Airlines Logo
11:00 am - 3:35 pm
OPO
-
DEN
34h 35m3 stops
$704Multiple Airlines
Thu, Mar 19 - Tue, Mar 24

Turkish Airlines flights from Colorado to Porto

Our best Turkish Airlines deals on Colorado to Porto flight tickets
Turkish Airlines
Apr 16
DEN8:25 pmDenver Intl
30h 15m
1 stop
OPO9:40 amPorto
Apr 27
OPO10:40 amPorto
38h 45m
1 stop
DEN6:25 pmDenver Intl
$662
Find similar
Turkish Airlines
Jan 30
DEN7:20 pmDenver Intl
31h 35m
1 stop
OPO9:55 amPorto
Feb 6
OPO10:55 amPorto
37h 40m
1 stop
DEN5:35 pmDenver Intl
$665
Find similar
Turkish Airlines
May 5
DEN8:25 pmDenver Intl
20h 05m
1 stop
OPO11:30 pmPorto
May 13
OPO4:40 pmPorto
32h 45m
1 stop
DEN6:25 pmDenver Intl
$695
Find similar

United Airlines flights from Colorado to Porto

Our best United Airlines deals on Colorado to Porto flight tickets
United Airlines
Mar 24
DEN1:40 pmDenver Intl
13h 50m
1 stop
OPO9:30 amPorto
Mar 31
OPO6:00 amPorto
16h 35m
1 stop
DEN3:35 pmDenver Intl
$675
Find similar
United Airlines
Mar 24
DEN1:25 pmDenver Intl
14h 05m
2 stops
OPO9:30 amPorto
Mar 31
OPO6:00 amPorto
17h 27m
2 stops
DEN4:27 pmDenver Intl
$685
Find similar
United Airlines
Jan 29
DEN9:45 amDenver Intl
22h 00m
2 stops
OPO2:45 pmPorto
Feb 2
OPO12:30 pmPorto
32h 10m
1 stop
DEN1:40 pmDenver Intl
$818
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 December 18, 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

Thu 4/16

8:25 pm-9:40 am

1 stop30h 15m

Porto

Mon 4/27

10:40 am-6:25 pm

1 stop38h 45m

$662

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 1/12

11:15 am-9:15 pm

2 stops27h 00m

Porto

Mon 1/19

6:15 am-7:55 pm

2 stops20h 40m

$663

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 1/15

7:20 pm-9:55 am

1 stop31h 35m

Porto

Thu 1/22

10:55 am-5:35 pm

1 stop37h 40m

$665

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 1/30

11:15 am-9:25 pm

3 stops27h 10m

Porto

Fri 2/6

7:00 am-7:55 pm

2 stops19h 55m

$671

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/24

1:40 pm-9:30 am

1 stop13h 50m

Porto

Tue 3/31

6:00 am-3:35 pm

1 stop16h 35m

$675

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 3/19

11:15 am-1:15 pm

2 stops20h 00m

Porto

Tue 3/24

9:55 pm-7:55 pm

2 stops28h 00m

$681

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/24

1:25 pm-9:30 am

2 stops14h 05m

Porto

Tue 3/31

6:00 am-4:27 pm

2 stops17h 27m

$685

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 1/12

11:15 am-6:15 pm

3 stops24h 00m

Porto

Mon 1/19

6:15 am-7:55 pm

2 stops20h 40m

$687

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/2

3:55 pm-2:55 pm

1 stop16h 00m

Porto

Wed 2/18

6:00 am-4:00 pm

1 stop17h 00m

$698

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 3/19

11:15 am-1:15 pm

2 stops20h 00m

Porto

Tue 3/24

11:00 am-3:35 pm

3 stops34h 35m

$704

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 March is, on average, the cheapest month to fly to Porto from Colorado, with most prices found around $772. If you aren’t able to travel during the month of March, then book flights to Porto from Colorado during February instead. Flights to Porto in February, while not as cheap as those in March, still average around $773.

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 $972 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 $783 on momondo.

Can stopping save me money on Colorado to Porto flights?

You could potentially save up to 19% 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

Fastest flight time

11h 28m

Direct flights

None
The fastest flight from Colorado to Porto takes 11h 28m
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
4,104 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,634 reviews
Search Lufthansa flights
United AirlinesPriceFrom $702Free CancellationRating
7.4
9,091 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
Braga
Aveiro
Matosinhos
Guimarães
Esposende
Lamego
Chaves
Viseu
Espinho
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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