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Cheap flights from Denver to Porto from $266

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 11/17. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:15 am - 12:05 pmDEN-OPO
17h 50m2 stops
Multiple Airlines Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$529Multiple Airlines
Find Deal
lun., nov. 24 - mar., dic. 9
Lufthansa Logo
5:45 pm - 2:55 pmDEN-OPO
14h 10m1 stop
Lufthansa Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$545Lufthansa
Find Deal
lun., nov. 24 - mar., dic. 9
Air Canada Logo
1:25 pm - 12:50 pmDEN-OPO
16h 25m2 stops
Air Canada Logo
6:00 am - 8:53 amOPO-DEN
33h 53m2 stops
$553Air Canada
Find Deal
lun., nov. 24 - mar., dic. 9
Multiple Airlines Logo
11:15 am - 3:25 pmDEN-OPO
22h 10m2 stops
Multiple Airlines Logo
6:00 am - 5:00 pmOPO-DEN
17h 00m1 stop
$564Multiple Airlines
Find Deal
mié., mar. 11 - mar., mar. 17
United Airlines Logo
4:00 pm - 9:30 amDEN-OPO
11h 30m1 stop
United Airlines Logo
6:00 am - 5:00 pmOPO-DEN
17h 00m1 stop
$573United Airlines
Find Deal
mié., mar. 11 - jue., mar. 19
United Airlines Logo
9:48 am - 9:30 amDEN-OPO
17h 42m2 stops
United Airlines Logo
6:00 am - 5:00 pmOPO-DEN
17h 00m1 stop
$578United Airlines
Find Deal
mar., mar. 10 - jue., mar. 19
Air Canada Logo
11:15 am - 12:05 pmDEN-OPO
17h 50m2 stops
Air Canada Logo
6:00 am - 10:23 amOPO-DEN
35h 23m2 stops
$583Air Canada
Find Deal
mié., feb. 18 - mar., mar. 3
Delta Logo
11:59 pm - 10:30 amDEN-OPO
28h 31m2 stops
Delta Logo
5:00 am - 8:03 pmOPO-DEN
22h 03m2 stops
$591Delta
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lun., mar. 23 - jue., abr. 2
Delta Logo
12:55 am - 10:30 amDEN-OPO
27h 35m2 stops
Delta Logo
11:15 am - 9:38 amOPO-DEN
28h 23m2 stops
$596Delta
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lun., mar. 9 - mar., mar. 17
SWISS Logo
1:25 pm - 6:30 pmDEN-OPO
23h 05m2 stops
SWISS Logo
7:20 pm - 9:25 pmOPO-DEN
33h 05m2 stops
$612SWISS
Find Deal
mar., mar. 24 - lun., mar. 30

Lufthansa flights from Denver to Porto

Our best Lufthansa deals on Denver to Porto flight tickets
Lufthansa
Nov 24
DEN5:45 pmDenver Intl
14h 10m
1 stop
OPO2:55 pmPorto
Dec 9
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$545
Find similar
Lufthansa
Dec 2
DEN4:20 pmDenver Intl
13h 30m
1 stop
OPO12:50 pmPorto
Dec 11
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$568
Find similar
Lufthansa
Dec 3
DEN4:20 pmDenver Intl
13h 55m
1 stop
OPO1:15 pmPorto
Dec 9
OPO6:00 amPorto
17h 00m
1 stop
DEN4:00 pmDenver Intl
$574
Find similar

Air Canada flights from Denver to Porto

Our best Air Canada deals on Denver to Porto flight tickets
Air Canada
Nov 24
DEN1:25 pmDenver Intl
16h 25m
2 stops
OPO12:50 pmPorto
Dec 9
OPO6:00 amPorto
33h 53m
2 stops
DEN8:53 amDenver Intl
$553
Find similar
Air Canada
Feb 18
DEN11:15 amDenver Intl
17h 50m
2 stops
OPO12:05 pmPorto
Mar 3
OPO6:00 amPorto
35h 23m
2 stops
DEN10:23 amDenver Intl
$583
Find similar
Air Canada
Dec 2
DEN11:15 amDenver Intl
17h 25m
2 stops
OPO11:40 amPorto
Dec 11
OPO6:00 amPorto
33h 53m
2 stops
DEN8:53 amDenver Intl
$587
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 octubre 27, 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

lun. 11/24

11:15 am-12:05 pm

2 stops17h 50m

Porto

mar. 12/9

6:00 am-4:00 pm

1 stop17h 00m

$529

DenverPorto

DEN - OPO

DENOPO

Denver Intl

lun. 11/24

5:45 pm-2:55 pm

1 stop14h 10m

Porto

mar. 12/9

6:00 am-4:00 pm

1 stop17h 00m

$545

DenverPorto

DEN - OPO

DENOPO

Denver Intl

lun. 11/24

1:25 pm-12:50 pm

2 stops16h 25m

Porto

mar. 12/9

6:00 am-8:53 am

2 stops33h 53m

$553

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mié. 3/11

11:15 am-3:25 pm

2 stops22h 10m

Porto

mar. 3/17

6:00 am-5:00 pm

1 stop17h 00m

$564

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mié. 3/11

4:00 pm-9:30 am

1 stop11h 30m

Porto

jue. 3/19

6:00 am-5:00 pm

1 stop17h 00m

$573

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mar. 3/10

9:48 am-9:30 am

2 stops17h 42m

Porto

jue. 3/19

6:00 am-5:00 pm

1 stop17h 00m

$578

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mié. 2/18

11:15 am-12:05 pm

2 stops17h 50m

Porto

mar. 3/3

6:00 am-10:23 am

2 stops35h 23m

$583

DenverPorto

DEN - OPO

DENOPO

Denver Intl

lun. 3/23

11:59 pm-10:30 am

2 stops28h 31m

Porto

jue. 4/2

5:00 am-8:03 pm

2 stops22h 03m

$591

DenverPorto

DEN - OPO

DENOPO

Denver Intl

lun. 3/9

12:55 am-10:30 am

2 stops27h 35m

Porto

mar. 3/17

11:15 am-9:38 am

2 stops28h 23m

$596

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mar. 3/24

1:25 pm-6:30 pm

2 stops23h 05m

Porto

lun. 3/30

7:20 pm-9:25 pm

2 stops33h 05m

$612

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 $764. If you aren’t able to travel during the month of February, then book flights to Porto from Denver during January instead. Flights to Porto in January, while not as cheap as those in February, still average around $805.

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 $972 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 $788 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 11h 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
4,030 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $641Free CancellationRating
6.8
7,532 reviews
Search Lufthansa flights
United AirlinesPriceFrom $721Free CancellationRating
7.4
8,999 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
Braga
Matosinhos
Esposende
Lamego
Guimarães
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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1 adult
mié. 11/26
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