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Cheap flights from Denver to Porto from $522

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 12/27. 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 Denver to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:15 am - 6:30 pmDEN-OPO
24h 15m3 stops
Multiple Airlines Logo
8:45 am - 7:55 pmOPO-DEN
18h 10m2 stops
$586Multiple Airlines
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Tue, Dec 9 - Tue, Dec 16
Multiple Airlines Logo
11:15 am - 7:25 pmDEN-OPO
25h 10m3 stops
Multiple Airlines Logo
7:35 am - 7:55 pmOPO-DEN
19h 20m2 stops
$589Multiple Airlines
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Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
5:45 pm - 7:25 pmDEN-OPO
18h 40m2 stops
Multiple Airlines Logo
7:35 am - 7:55 pmOPO-DEN
19h 20m2 stops
$601Multiple Airlines
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Tue, Feb 24 - Tue, Mar 3
Turkish Airlines Logo
7:20 pm - 9:55 amDEN-OPO
31h 35m1 stop
Turkish Airlines Logo
10:55 am - 5:35 pmOPO-DEN
37h 40m1 stop
$650Turkish Airlines
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Tue, Dec 2 - Mon, Dec 8
Lufthansa Logo
5:20 pm - 1:15 pmDEN-OPO
13h 55m1 stop
Lufthansa Logo
11:05 am - 2:20 pmOPO-DEN
34h 15m1 stop
$686Lufthansa
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Wed, Mar 18 - Mon, Mar 30
KLM Logo
10:32 am - 10:30 amDEN-OPO
16h 58m2 stops
KLM Logo
6:05 am - 9:16 pmOPO-DEN
22h 11m2 stops
$691KLM
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Tue, Feb 10 - Tue, Feb 24
United Airlines Logo
1:50 pm - 9:30 amDEN-OPO
12h 40m1 stop
United Airlines Logo
12:30 pm - 1:40 pmOPO-DEN
32h 10m1 stop
$692United Airlines
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Tue, Feb 24 - Tue, Mar 3
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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Thu, Dec 4 - Wed, Dec 10
United Airlines Logo
3:55 pm - 2:45 pmDEN-OPO
15h 50m1 stop
United Airlines Logo
12:35 pm - 9:58 pmOPO-DEN
16h 23m1 stop
$708United Airlines
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Tue, Feb 10 - Tue, Feb 24
Lufthansa Logo
5:45 pm - 2:45 pmDEN-OPO
14h 00m1 stop
Lufthansa Logo
6:00 am - 4:30 pmOPO-DEN
17h 30m2 stops
$721Lufthansa
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Tue, Dec 9 - Tue, Dec 16

Lufthansa flights from Denver to Porto

Our best Lufthansa deals on Denver to Porto flight tickets
Lufthansa
Mar 18
DEN5:20 pmDenver Intl
13h 55m
1 stop
OPO1:15 pmPorto
Mar 30
OPO11:05 amPorto
34h 15m
1 stop
DEN2:20 pmDenver Intl
$686
Find similar
Lufthansa
Dec 9
DEN5:45 pmDenver Intl
14h 00m
1 stop
OPO2:45 pmPorto
Dec 16
OPO6:00 amPorto
17h 30m
2 stops
DEN4:30 pmDenver Intl
$721
Find similar
Lufthansa
Dec 1
DEN5:45 pmDenver Intl
14h 10m
1 stop
OPO2:55 pmPorto
Dec 8
OPO1:45 pmPorto
31h 50m
1 stop
DEN2:35 pmDenver Intl
$765
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United Airlines flights from Denver to Porto

Our best United Airlines deals on Denver to Porto flight tickets
United Airlines
Feb 24
DEN1:50 pmDenver Intl
12h 40m
1 stop
OPO9:30 amPorto
Mar 3
OPO12:30 pmPorto
32h 10m
1 stop
DEN1:40 pmDenver Intl
$692
Find similar
United Airlines
Feb 10
DEN3:55 pmDenver Intl
15h 50m
1 stop
OPO2:45 pmPorto
Feb 24
OPO12:35 pmPorto
16h 23m
1 stop
DEN9:58 pmDenver Intl
$708
Find similar
United Airlines
Mar 12
DEN7:45 amDenver Intl
19h 45m
2 stops
OPO9:30 amPorto
Mar 22
OPO6:00 amPorto
23h 41m
2 stops
DEN11:41 pmDenver Intl
$788
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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 November 11, 2025.
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

Tue 12/9

11:15 am-6:30 pm

3 stops24h 15m

Porto

Tue 12/16

8:45 am-7:55 pm

2 stops18h 10m

$586

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/24

11:15 am-7:25 pm

3 stops25h 10m

Porto

Tue 3/3

7:35 am-7:55 pm

2 stops19h 20m

$589

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/24

5:45 pm-7:25 pm

2 stops18h 40m

Porto

Tue 3/3

7:35 am-7:55 pm

2 stops19h 20m

$601

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 12/2

7:20 pm-9:55 am

1 stop31h 35m

Porto

Mon 12/8

10:55 am-5:35 pm

1 stop37h 40m

$650

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/18

5:20 pm-1:15 pm

1 stop13h 55m

Porto

Mon 3/30

11:05 am-2:20 pm

1 stop34h 15m

$686

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/10

10:32 am-10:30 am

2 stops16h 58m

Porto

Tue 2/24

6:05 am-9:16 pm

2 stops22h 11m

$691

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 2/24

1:50 pm-9:30 am

1 stop12h 40m

Porto

Tue 3/3

12:30 pm-1:40 pm

1 stop32h 10m

$692

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 12/4

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

Tue 2/10

3:55 pm-2:45 pm

1 stop15h 50m

Porto

Tue 2/24

12:35 pm-9:58 pm

1 stop16h 23m

$708

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 12/9

5:45 pm-2:45 pm

1 stop14h 00m

Porto

Tue 12/16

6:00 am-4:30 pm

2 stops17h 30m

$721

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 March is, on average, the cheapest month to fly to Porto from Denver, with most prices found around $770. If you aren’t able to travel during the month of March, then book flights to Porto from Denver 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 Denver 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 Denver 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 Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $962 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 17% 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

Direct flights

None
There are no direct flights from Denver to Porto. There are no popular flight routes from Denver to Porto.
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  • 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 12h 40m, 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
4,041 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,565 reviews
Search Lufthansa flights
United AirlinesPriceFrom $721Free CancellationRating
7.4
9,012 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 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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