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Cheap flights from Denver to Porto from $312

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 1/6. 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
5:45 pm - 11:00 pmDEN-OPO
22h 15m2 stops
Multiple Airlines Logo
7:35 am - 7:55 pmOPO-DEN
19h 20m2 stops
$619Multiple Airlines
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dom., ene. 11 - mar., ene. 27
Multiple Airlines Logo
11:15 am - 7:00 pmDEN-OPO
24h 45m3 stops
Multiple Airlines Logo
7:35 am - 7:55 pmOPO-DEN
19h 20m2 stops
$628Multiple Airlines
Find Deal
dom., ene. 11 - mar., ene. 27
Multiple Airlines Logo
5:35 pm - 12:05 pmDEN-OPO
35h 30m2 stops
Multiple Airlines Logo
6:00 am - 1:40 pmOPO-DEN
14h 40m1 stop
$647Multiple Airlines
Find Deal
dom., ene. 11 - mar., ene. 27
Lufthansa Logo
5:45 pm - 10:25 pmDEN-OPO
21h 40m1 stop
Lufthansa Logo
6:00 am - 1:40 pmOPO-DEN
14h 40m1 stop
$649Lufthansa
Find Deal
dom., ene. 11 - mar., ene. 27
Multiple Airlines Logo
11:15 am - 10:50 amDEN-OPO
16h 35m2 stops
Multiple Airlines Logo
7:35 am - 7:55 pmOPO-DEN
19h 20m2 stops
$659Multiple Airlines
Find Deal
dom., ene. 11 - mar., ene. 27
Lufthansa Logo
5:45 pm - 10:25 pmDEN-OPO
21h 40m1 stop
Lufthansa Logo
6:00 am - 1:40 pmOPO-DEN
14h 40m1 stop
$677Lufthansa
Find Deal
dom., ene. 11 - mar., ene. 27
SWISS Logo
5:35 pm - 11:15 amDEN-OPO
34h 40m2 stops
SWISS Logo
7:25 pm - 10:56 pmOPO-DEN
34h 31m2 stops
$681SWISS
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mar., feb. 10 - mar., feb. 24
Multiple Airlines Logo
5:45 pm - 10:25 pmDEN-OPO
21h 40m1 stop
Multiple Airlines Logo
12:05 pm - 9:59 pmOPO-DEN
40h 54m2 stops
$686Multiple Airlines
Find Deal
dom., ene. 11 - mar., ene. 27
Turkish Airlines Logo
8:25 pm - 9:40 amDEN-OPO
30h 15m1 stop
Turkish Airlines Logo
10:40 am - 6:20 pmOPO-DEN
38h 40m1 stop
$690Turkish Airlines
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dom., may. 10 - sáb., may. 23
Multiple Airlines Logo
3:55 pm - 2:45 pmDEN-OPO
15h 50m1 stop
Multiple Airlines Logo
7:25 pm - 7:55 pmOPO-DEN
31h 30m2 stops
$692Multiple Airlines
Find Deal
mar., feb. 10 - mar., feb. 24

Lufthansa flights from Denver to Porto

Our best Lufthansa deals on Denver to Porto flight tickets
Lufthansa
Jan 11
DEN5:45 pmDenver Intl
21h 40m
1 stop
OPO10:25 pmPorto
Jan 27
OPO6:00 amPorto
14h 40m
1 stop
DEN1:40 pmDenver Intl
$649
Find similar
Lufthansa
Jan 11
DEN5:45 pmDenver Intl
21h 40m
1 stop
OPO10:25 pmPorto
Jan 27
OPO6:00 amPorto
14h 40m
1 stop
DEN1:40 pmDenver Intl
$677
Find similar
Lufthansa
Feb 10
DEN3:55 pmDenver Intl
23h 30m
1 stop
OPO10:25 pmPorto
Feb 24
OPO4:15 pmPorto
28h 25m
1 stop
DEN1:40 pmDenver Intl
$708
Find similar

Turkish Airlines flights from Denver to Porto

Our best Turkish Airlines deals on Denver to Porto flight tickets
Turkish Airlines
May 10
DEN8:25 pmDenver Intl
30h 15m
1 stop
OPO9:40 amPorto
May 23
OPO10:40 amPorto
38h 40m
1 stop
DEN6:20 pmDenver Intl
$690
Find similar
Turkish Airlines
Apr 28
DEN8:25 pmDenver Intl
30h 15m
1 stop
OPO9:40 amPorto
May 6
OPO10:40 amPorto
38h 40m
1 stop
DEN6:20 pmDenver Intl
$715
Find similar
Turkish Airlines
Mar 19
DEN8:20 pmDenver Intl
31h 35m
1 stop
OPO9:55 amPorto
Mar 28
OPO10:55 amPorto
37h 25m
1 stop
DEN6:20 pmDenver Intl
$726
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 noviembre 17, 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

dom. 1/11

5:45 pm-11:00 pm

2 stops22h 15m

Porto

mar. 1/27

7:35 am-7:55 pm

2 stops19h 20m

$619

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

11:15 am-7:00 pm

3 stops24h 45m

Porto

mar. 1/27

7:35 am-7:55 pm

2 stops19h 20m

$628

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

5:35 pm-12:05 pm

2 stops35h 30m

Porto

mar. 1/27

6:00 am-1:40 pm

1 stop14h 40m

$647

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

5:45 pm-10:25 pm

1 stop21h 40m

Porto

mar. 1/27

6:00 am-1:40 pm

1 stop14h 40m

$649

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

11:15 am-10:50 am

2 stops16h 35m

Porto

mar. 1/27

7:35 am-7:55 pm

2 stops19h 20m

$659

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

5:45 pm-10:25 pm

1 stop21h 40m

Porto

mar. 1/27

6:00 am-1:40 pm

1 stop14h 40m

$677

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mar. 2/10

5:35 pm-11:15 am

2 stops34h 40m

Porto

mar. 2/24

7:25 pm-10:56 pm

2 stops34h 31m

$681

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 1/11

5:45 pm-10:25 pm

1 stop21h 40m

Porto

mar. 1/27

12:05 pm-9:59 pm

2 stops40h 54m

$686

DenverPorto

DEN - OPO

DENOPO

Denver Intl

dom. 5/10

8:25 pm-9:40 am

1 stop30h 15m

Porto

sáb. 5/23

10:40 am-6:20 pm

1 stop38h 40m

$690

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mar. 2/10

3:55 pm-2:45 pm

1 stop15h 50m

Porto

mar. 2/24

7:25 pm-7:55 pm

2 stops31h 30m

$692

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 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 $974 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.
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 30m, 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
4,047 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,576 reviews
Search Lufthansa flights
United AirlinesPriceFrom $721Free CancellationRating
7.4
9,014 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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