How long does it take to fly to Denver?

Flight times vary depending on what airport in Portugal you fly out of and what airport in Denver you fly into. For example, flying from Lisbon to Denver takes 21h 20m on average. On the other hand, flying from Funchal to Denver takes 28h 34m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What is the cheapest airline that flies from Portugal to Denver Intl?

Iberia and British Airways are the most popular carriers operating from Portugal to Denver Intl

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

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

How old do you have to be to fly from Portugal to Denver Intl 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 Portugal to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The required travel and health documents for your Denver Intl 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 Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$382 Cheap Flights from Portugal to Denver in 2026

Find the cheapest flights from Portugal to Denver

Round-trip

One-way

Last minute

Recent round-trip flight deals from Portugal to Denver

Enter your travel dates to find the best prices.

10:20 pm - 12:40 pm

LIS

DEN

21h 20m

1 stop

8:10 pm - 9:20 pm

DEN

LIS

18h 10m

1 stop

$861Icelandair

Thu, Aug 27 - Wed, Sep 9

7:00 am - 11:20 am

LIS

DEN

35h 20m

3 stops

4:40 pm - 9:55 pm

DEN

LIS

22h 15m

2 stops

$892Multiple Airlines

Thu, Jul 23 - Thu, Aug 27

9:10 pm - 11:20 am

LIS

DEN

45h 10m

3 stops

4:40 pm - 8:10 pm

DEN

LIS

20h 30m

2 stops

$899Multiple Airlines

Wed, Sep 9 - Wed, Sep 16

9:10 pm - 11:20 am

LIS

DEN

45h 10m

3 stops

4:40 pm - 11:00 am

DEN

LIS

35h 20m

3 stops

$907Multiple Airlines

Wed, Sep 9 - Wed, Sep 16

10:20 pm - 12:40 pm

LIS

DEN

21h 20m

1 stop

8:10 pm - 9:20 pm

DEN

LIS

18h 10m

1 stop

$913Icelandair

Thu, Jul 16 - Wed, Jul 29

10:20 am - 8:23 am

LIS

DEN

29h 03m

1 stop

4:40 pm - 11:30 pm

DEN

LIS

23h 50m

2 stops

$918Multiple Airlines

Fri, Aug 28 - Sat, Sep 12

10:20 pm - 12:40 pm

LIS

DEN

21h 20m

1 stop

4:40 pm - 9:20 pm

DEN

LIS

21h 40m

1 stop

$923Icelandair

Sun, Jul 19 - Sat, Aug 1

5:05 am - 3:40 pm

LIS

DEN

17h 35m

1 stop

5:40 pm - 10:15 pm

DEN

LIS

21h 35m

1 stop

$934Lufthansa

Fri, Sep 4 - Thu, Sep 10

9:40 am - 4:58 pm

FNC

DEN

14h 18m

1 stop

7:40 am - 8:05 am

DEN

FNC

17h 25m

1 stop

$1,361United Airlines

Fri, Jul 17 - Tue, Jul 21

5:25 pm - 6:50 pm

FNC

DEN

32h 25m

1 stop

5:40 pm - 4:05 pm

DEN

FNC

15h 25m

1 stop

$1,511Lufthansa

Sat, Aug 15 - Sat, Aug 22

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Aer Lingus flights from Portugal to Denver

Our best Aer Lingus deals on Portugal to Denver flight tickets

Aer Lingus

Aug 18

LIS10:15 pmLisbon Humberto Delgado

27h 00m

1 stop

DEN6:15 pmDenver Intl

Aug 31

DEN8:00 pmDenver Intl

18h 35m

1 stop

LIS9:35 pmLisbon Humberto Delgado

$1,030

Aer Lingus

Aug 15

LIS10:15 pmLisbon Humberto Delgado

27h 00m

1 stop

DEN6:15 pmDenver Intl

Aug 22

DEN8:00 pmDenver Intl

18h 35m

1 stop

LIS9:35 pmLisbon Humberto Delgado

$1,055

Icelandair flights from Portugal to Denver

Our best Icelandair deals on Portugal to Denver flight tickets

Icelandair

Aug 27

LIS10:20 pmLisbon Humberto Delgado

21h 20m

1 stop

DEN12:40 pmDenver Intl

Sep 9

DEN8:10 pmDenver Intl

18h 10m

1 stop

LIS9:20 pmLisbon Humberto Delgado

$861

Icelandair

Jul 16

LIS10:20 pmLisbon Humberto Delgado

21h 20m

1 stop

DEN12:40 pmDenver Intl

Jul 29

DEN8:10 pmDenver Intl

18h 10m

1 stop

LIS9:20 pmLisbon Humberto Delgado

$913

Icelandair

Jul 19

LIS10:20 pmLisbon Humberto Delgado

21h 20m

1 stop

DEN12:40 pmDenver Intl

Aug 1

DEN4:40 pmDenver Intl

21h 40m

1 stop

LIS9:20 pmLisbon Humberto Delgado

$923

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 8/27

10:20 pm-12:40 pm

1 stop21h 20m

Denver Intl

Wed 9/9

8:10 pm-9:20 pm

1 stop18h 10m

$861

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 7/23

7:00 am-11:20 am

3 stops35h 20m

Denver Intl

Thu 8/27

4:40 pm-9:55 pm

2 stops22h 15m

$892

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 9/9

9:10 pm-11:20 am

3 stops45h 10m

Denver Intl

Wed 9/16

4:40 pm-8:10 pm

2 stops20h 30m

$899

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 9/9

9:10 pm-11:20 am

3 stops45h 10m

Denver Intl

Wed 9/16

4:40 pm-11:00 am

3 stops35h 20m

$907

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 7/16

10:20 pm-12:40 pm

1 stop21h 20m

Denver Intl

Wed 7/29

8:10 pm-9:20 pm

1 stop18h 10m

$913

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 8/28

10:20 am-8:23 am

1 stop29h 03m

Denver Intl

Sat 9/12

4:40 pm-11:30 pm

2 stops23h 50m

$918

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 7/19

10:20 pm-12:40 pm

1 stop21h 20m

Denver Intl

Sat 8/1

4:40 pm-9:20 pm

1 stop21h 40m

$923

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 9/4

5:05 am-3:40 pm

1 stop17h 35m

Denver Intl

Thu 9/10

5:40 pm-10:15 pm

1 stop21h 35m

$934

Quickest round-trip

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Fri 7/17

9:40 am-4:58 pm

1 stop14h 18m

Denver Intl

Tue 7/21

7:40 am-8:05 am

1 stop17h 25m

$1,361

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sat 8/15

5:25 pm-6:50 pm

1 stop32h 25m

Denver Intl

Sat 8/22

5:40 pm-4:05 pm

1 stop15h 25m

$1,511

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portugal to Denver

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

Prices

Airlines

Other information

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Portugal is in May. Flight prices, which tend to average around $737, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in May, then you should wait until February to fly from Portugal, when ticket prices are also cheap, with an average price of $749.

Can stopping save me money on Portugal to Denver flights?

You could potentially save up to 11% on your flight if you consider stops on a Portugal to Denver flight.

Cheap Portugal to Denver flight deals and tips

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

Fastest flight time	20h 18m
Direct flights	None

The fastest flight from Portugal to Denver takes 20h 18m

There are no direct flights from Portugal to Denver. There are no popular flight routes from Portugal to Denver.

Search flight deals

Frequently asked questions about flying from Portugal to Denver

When did momondo last update prices for flights from Portugal to Denver Intl Airport?
Prices for flights from Portugal to Denver Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from Portugal to Denver Intl 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 Portugal to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl 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 Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Breckenridge

Estes Park

Black Hawk

Aurora

Fort Collins

Longmont

Boulder

Manitou Springs

Westminster

Lakewood

Greeley

Keystone

Thornton

Cripple Creek

Frisco

Englewood

Centennial

Winter Park

Littleton

Copper Mountain

Why use momondo?

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

It is quick and easy to find Portugal to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

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

momondo does allow users to show only those flights to Denver from Portugal which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Portugal and Denver by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Portugal to Denver now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Denver and let you know when they change.