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Cheap flights from Denver to Porto from $348

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Porto departing on 5/11. 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 Denver to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:40 am - 3:25 pm
DEN
-
OPO
25h 45m2 stops
Delta Logo
5:00 am - 11:15 pm
OPO
-
DEN
25h 15m2 stops
$503Delta
Wed, Apr 22 - Wed, May 6
Delta Logo
12:48 pm - 6:10 pm
DEN
-
OPO
22h 22m2 stops
Delta Logo
5:00 am - 11:15 pm
OPO
-
DEN
25h 15m2 stops
$508Delta
Mon, Apr 20 - Wed, May 6
Iberia Logo
10:28 am - 11:45 am
DEN
-
OPO
18h 17m2 stops
Iberia Logo
8:20 am - 11:39 pm
OPO
-
DEN
22h 19m2 stops
$521Iberia
Tue, Apr 21 - Wed, Apr 29
British Airways Logo
6:40 pm - 7:30 pm
DEN
-
OPO
17h 50m1 stop
British Airways Logo
8:20 am - 11:39 pm
OPO
-
DEN
22h 19m2 stops
$527British Airways
Tue, Apr 21 - Wed, Apr 29
Multiple Airlines Logo
11:15 am - 1:15 pm
DEN
-
OPO
19h 00m2 stops
Multiple Airlines Logo
6:00 am - 5:00 pm
OPO
-
DEN
17h 00m1 stop
$533Multiple Airlines
Wed, Jan 28 - Wed, Mar 11
Multiple Airlines Logo
4:20 pm - 12:50 pm
DEN
-
OPO
13h 30m1 stop
Multiple Airlines Logo
6:00 am - 10:23 am
OPO
-
DEN
35h 23m2 stops
$537Multiple Airlines
Tue, Jan 27 - Tue, Feb 3
British Airways Logo
6:40 pm - 7:30 pm
DEN
-
OPO
17h 50m1 stop
British Airways Logo
8:20 pm - 4:30 pm
OPO
-
DEN
27h 10m1 stop
$544British Airways
Tue, Apr 21 - Wed, Apr 29
United Airlines Logo
2:00 pm - 9:45 am
DEN
-
OPO
12h 45m1 stop
United Airlines Logo
6:00 am - 1:35 pm
OPO
-
DEN
14h 35m1 stop
$547United Airlines
Wed, Apr 22 - Thu, May 7
Lufthansa Logo
4:05 pm - 11:25 pm
DEN
-
OPO
24h 20m1 stop
Lufthansa Logo
6:20 am - 2:20 pm
OPO
-
DEN
15h 00m1 stop
$549Lufthansa
Wed, Apr 8 - Fri, Apr 17
Lufthansa Logo
4:05 pm - 11:25 pm
DEN
-
OPO
24h 20m1 stop
Lufthansa Logo
6:00 am - 3:40 pm
OPO
-
DEN
16h 40m1 stop
$551Lufthansa
Mon, Apr 20 - Wed, May 6

Delta flights from Denver to Porto

Our best Delta deals on Denver to Porto flight tickets
Delta
Apr 22
DEN6:40 amDenver Intl
25h 45m
2 stops
OPO3:25 pmPorto
May 6
OPO5:00 amPorto
25h 15m
2 stops
DEN11:15 pmDenver Intl
$503
Find similar
Delta
Apr 20
DEN12:48 pmDenver Intl
22h 22m
2 stops
OPO6:10 pmPorto
May 8
OPO5:00 amPorto
23h 38m
2 stops
DEN9:38 pmDenver Intl
$508
Find similar
Delta
Apr 28
DEN6:20 amDenver Intl
26h 05m
2 stops
OPO3:25 pmPorto
May 12
OPO6:15 amPorto
16h 25m
1 stop
DEN3:40 pmDenver Intl
$556
Find similar

Iberia flights from Denver to Porto

Our best Iberia deals on Denver to Porto flight tickets
Iberia
Apr 21
DEN10:28 amDenver Intl
18h 17m
2 stops
OPO11:45 amPorto
Apr 29
OPO8:20 amPorto
22h 19m
2 stops
DEN11:39 pmDenver Intl
$521
Find similar
Iberia
Feb 13
DEN5:25 pmDenver Intl
31h 15m
2 stops
OPO7:40 amPorto
Feb 20
OPO8:20 amPorto
21h 16m
2 stops
DEN10:36 pmDenver Intl
$623
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver 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 January 1, 2026.
Use the filters below to find and compare flights from Denver to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 4/22

6:40 am-3:25 pm

2 stops25h 45m

Porto

Wed 5/6

5:00 am-11:15 pm

2 stops25h 15m

$503

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 4/20

12:48 pm-6:10 pm

2 stops22h 22m

Porto

Wed 5/6

5:00 am-11:15 pm

2 stops25h 15m

$508

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/21

10:28 am-11:45 am

2 stops18h 17m

Porto

Wed 4/29

8:20 am-11:39 pm

2 stops22h 19m

$521

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/21

6:40 pm-7:30 pm

1 stop17h 50m

Porto

Wed 4/29

8:20 am-11:39 pm

2 stops22h 19m

$527

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 1/28

11:15 am-1:15 pm

2 stops19h 00m

Porto

Wed 3/11

6:00 am-5:00 pm

1 stop17h 00m

$533

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 1/27

4:20 pm-12:50 pm

1 stop13h 30m

Porto

Tue 2/3

6:00 am-10:23 am

2 stops35h 23m

$537

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/21

6:40 pm-7:30 pm

1 stop17h 50m

Porto

Wed 4/29

8:20 pm-4:30 pm

1 stop27h 10m

$544

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 4/22

2:00 pm-9:45 am

1 stop12h 45m

Porto

Thu 5/7

6:00 am-1:35 pm

1 stop14h 35m

$547

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 4/8

4:05 pm-11:25 pm

1 stop24h 20m

Porto

Fri 4/17

6:20 am-2:20 pm

1 stop15h 00m

$549

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 4/20

4:05 pm-11:25 pm

1 stop24h 20m

Porto

Wed 5/6

6:00 am-3:40 pm

1 stop16h 40m

$551

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 Denver 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 Denver, with most prices found around $773. If you aren’t able to travel during the month of February, then book flights to Porto from Denver during March instead. Flights to Porto in March, while not as cheap as those in February, still average around $794.

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

You are more likely to see cheaper flights to Porto from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $982 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Denver for as low as $783 on momondo.

Can stopping save me money on Denver to Porto flights?

You could potentially save up to 19% on your flight if you consider stops on a Denver to Porto flight.

How have Denver to Porto flight prices changed over time?

When to book flights from Denver to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Porto (DEN to OPO) flight deals and tips

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

Fastest flight time

13h 44m

Direct flights

None
The fastest flight from Denver to Porto takes 13h 44m
There are no direct flights from Denver to Porto. There are no popular flight routes from Denver to Porto.
Search flight deals

  • How far is Denver Intl to Porto by plane?

    A flight from Denver Intl to Porto will travel around 4771.4 mi. Flights usually cover this in 13h 44m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Denver Intl Airport to Porto Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Porto Airport.

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

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Denver to Porto?

Best airlines flying from Denver to Porto

Compare and see reviews for airlines that fly from Denver to Porto with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $574Free CancellationRating
7.3
4,138 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,675 reviews
Search Lufthansa flights
United AirlinesPriceFrom $702Free CancellationRating
7.4
9,126 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
Matosinhos
Aveiro
Guimarães
Esposende
Lamego
Chaves
Viseu
Espinho
Arcos de Valdevez
Pinhao
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Porto for you.

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

Yes. All flights to Porto from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Denver to Porto.

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

Yes. momondo can track prices for Denver to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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