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Cheap flights from Colorado to Porto from $397

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 8/2. 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.
United Airlines Logo
4:00 pm - 9:30 am
DEN
-
OPO
11h 30m
1 stop
United Airlines Logo
6:00 am - 4:00 pm
OPO
-
DEN
17h 00m
1 stop
$758United Airlines
Fri, Oct 30 - Thu, Nov 5
United Airlines Logo
7:58 am - 9:30 am
DEN
-
OPO
19h 32m
2 stops
United Airlines Logo
6:00 am - 4:00 pm
OPO
-
DEN
17h 00m
1 stop
$762United Airlines
Fri, Oct 30 - Thu, Nov 5
United Airlines Logo
7:58 am - 9:30 am
DEN
-
OPO
19h 32m
2 stops
United Airlines Logo
12:30 pm - 12:58 am
OPO
-
DEN
19h 28m
2 stops
$773United Airlines
Fri, Oct 30 - Thu, Nov 5
Turkish Airlines Logo
8:25 pm - 3:40 pm
DEN
-
OPO
36h 15m
1 stop
Turkish Airlines Logo
10:45 am - 6:25 pm
OPO
-
DEN
38h 40m
1 stop
$776Turkish Airlines
Thu, Sep 10 - Sat, Sep 19
Turkish Airlines Logo
8:25 pm - 9:45 am
DEN
-
OPO
30h 20m
1 stop
Turkish Airlines Logo
10:45 am - 6:25 pm
OPO
-
DEN
38h 40m
1 stop
$780Turkish Airlines
Thu, Sep 10 - Sat, Sep 19
Turkish Airlines Logo
8:25 pm - 9:40 am
DEN
-
OPO
30h 15m
1 stop
Turkish Airlines Logo
4:40 pm - 6:25 pm
OPO
-
DEN
32h 45m
1 stop
$791Turkish Airlines
Sat, Oct 10 - Sat, Oct 17
Multiple Airlines Logo
11:25 am - 4:00 pm
DEN
-
OPO
21h 35m
2 stops
Multiple Airlines Logo
6:20 am - 11:08 pm
OPO
-
DEN
23h 48m
2 stops
$800Multiple Airlines
Tue, Sep 29 - Thu, Oct 8
Multiple Airlines Logo
9:40 am - 7:00 am
DEN
-
OPO
14h 20m
1 stop
Multiple Airlines Logo
6:20 am - 2:20 pm
OPO
-
DEN
15h 00m
1 stop
$809Multiple Airlines
Tue, Sep 29 - Thu, Oct 8
Turkish Airlines Logo
8:25 pm - 9:45 am
DEN
-
OPO
30h 20m
1 stop
Turkish Airlines Logo
10:45 am - 6:25 pm
OPO
-
DEN
38h 40m
1 stop
$816Turkish Airlines
Thu, Oct 8 - Sat, Oct 17
United Airlines Logo
11:25 am - 7:00 am
DEN
-
OPO
12h 35m
1 stop
United Airlines Logo
12:15 pm - 12:21 pm
OPO
-
DEN
31h 06m
2 stops
$818United Airlines
Wed, Sep 30 - Tue, Oct 13

United Airlines flights from Colorado to Porto

Our best United Airlines deals on Colorado to Porto flight tickets
United Airlines
Oct 30
DEN4:00 pmDenver Intl
11h 30m
1 stop
OPO9:30 amPorto
Nov 5
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$758
United Airlines
Oct 30
DEN7:58 amDenver Intl
19h 32m
2 stops
OPO9:30 amPorto
Nov 5
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$762
United Airlines
Oct 30
DEN7:58 amDenver Intl
19h 32m
2 stops
OPO9:30 amPorto
Nov 5
OPO12:30 pmPorto
19h 28m
2 stops
DEN12:58 amDenver Intl
$773

Delta flights from Colorado to Porto

Our best Delta deals on Colorado to Porto flight tickets
Delta
Sep 22
DEN12:20 pmDenver Intl
15h 10m
1 stop
OPO10:30 amPorto
Sep 30
OPO5:55 amPorto
16h 45m
1 stop
DEN3:40 pmDenver Intl
$829
Delta
Sep 29
DEN7:05 amDenver Intl
20h 25m
2 stops
OPO10:30 amPorto
Oct 8
OPO5:00 amPorto
20h 10m
2 stops
DEN6:10 pmDenver Intl
$836
Delta
Oct 8
DEN11:00 amDenver Intl
16h 30m
1 stop
OPO10:30 amPorto
Oct 15
OPO1:25 pmPorto
16h 18m
1 stop
DEN10:43 pmDenver Intl
$899

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 May 9, 2026.
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

Cheapest round-trip
Quickest round-trip

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 10/30

4:00 pm-9:30 am

1 stop11h 30m

Porto

Thu 11/5

6:00 am-4:00 pm

1 stop17h 00m

$758

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 10/30

7:58 am-9:30 am

2 stops19h 32m

Porto

Thu 11/5

6:00 am-4:00 pm

1 stop17h 00m

$762

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 10/30

7:58 am-9:30 am

2 stops19h 32m

Porto

Thu 11/5

12:30 pm-12:58 am

2 stops19h 28m

$773

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 9/10

8:25 pm-3:40 pm

1 stop36h 15m

Porto

Sat 9/19

10:45 am-6:25 pm

1 stop38h 40m

$776

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 9/10

8:25 pm-9:45 am

1 stop30h 20m

Porto

Sat 9/19

10:45 am-6:25 pm

1 stop38h 40m

$780

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 10/10

8:25 pm-9:40 am

1 stop30h 15m

Porto

Sat 10/17

4:40 pm-6:25 pm

1 stop32h 45m

$791

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 9/29

11:25 am-4:00 pm

2 stops21h 35m

Porto

Thu 10/8

6:20 am-11:08 pm

2 stops23h 48m

$800

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 9/29

9:40 am-7:00 am

1 stop14h 20m

Porto

Thu 10/8

6:20 am-2:20 pm

1 stop15h 00m

$809

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 10/8

8:25 pm-9:45 am

1 stop30h 20m

Porto

Sat 10/17

10:45 am-6:25 pm

1 stop38h 40m

$816

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 9/30

11:25 am-7:00 am

1 stop12h 35m

Porto

Tue 10/13

12:15 pm-12:21 pm

2 stops31h 06m

$818

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 $450. If you aren’t able to travel during the month of March, then book flights to Porto from Colorado during November instead. Flights to Porto in November, while not as cheap as those in March, still average around $485.

How far in advance should I book a flight from Colorado 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 $983 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 $787 on momondo.

Can stopping save me money on Colorado to Porto flights?

You could potentially save up to 34% 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

12h 35m

Direct flights

None
The fastest flight from Colorado to Porto takes 12h 35m
There are no direct flights from Colorado to Porto. There are no popular flight routes from Colorado to Porto.
Search flight deals

Frequently asked questions about flying from Colorado to Porto

  • 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
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,696 reviews
Search United Airlines flights
LufthansaPriceFrom $663Free CancellationRating
6.8
7,985 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $701Free CancellationRating
7.4
4,357 reviews
Search Turkish 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
Lamego
Esposende
Chaves
Pinhao
Espinho
Guimarães
Arcos de Valdevez
Ponte de Lima
Viseu
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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