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

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

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 22h 15m on average. On the other hand, flying from Funchal to Denver takes 47h 04m 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.

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.

$419 Cheap Flights from Portugal to Denver in 2026

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Find the cheapest flights from Portugal to Denver

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Recent round-trip flight deals from Portugal to Denver

Enter your travel dates to find the best prices.

10:15 pm - 6:15 pm

LIS

DEN

27h 00m

1 stop

8:00 pm - 9:35 pm

DEN

LIS

18h 35m

1 stop

$905Aer Lingus

Fri, Jun 5 - Fri, Jun 19

5:00 am - 3:36 pm

LIS

DEN

17h 36m

2 stops

5:40 pm - 5:50 pm

DEN

LIS

17h 10m

1 stop

$955Multiple Airlines

Fri, Jun 5 - Sat, Jun 20

5:00 am - 8:15 pm

LIS

DEN

22h 15m

2 stops

5:40 pm - 2:55 pm

DEN

LIS

14h 15m

1 stop

$973Delta

Thu, May 28 - Sun, May 31

5:35 am - 3:40 pm

LIS

DEN

17h 05m

1 stop

5:40 pm - 8:50 am

DEN

LIS

32h 10m

1 stop

$974Air France

Fri, Jun 5 - Fri, Jun 19

5:00 am - 8:15 pm

LIS

DEN

22h 15m

2 stops

3:12 pm - 5:50 pm

DEN

LIS

19h 38m

2 stops

$975Delta

Fri, May 29 - Tue, Jun 2

5:00 am - 5:14 pm

LIS

DEN

19h 14m

2 stops

5:40 pm - 8:50 am

DEN

LIS

32h 10m

1 stop

$977Multiple Airlines

Sat, Jun 6 - Mon, Jun 22

5:00 am - 5:14 pm

LIS

DEN

19h 14m

2 stops

5:40 pm - 5:50 pm

DEN

LIS

17h 10m

1 stop

$978Delta

Fri, Jun 5 - Sat, Jun 20

5:00 am - 3:36 pm

LIS

DEN

17h 36m

2 stops

5:40 pm - 8:50 am

DEN

LIS

32h 10m

1 stop

$979Multiple Airlines

Fri, Jun 5 - Fri, Jun 19

5:35 am - 3:40 pm

LIS

DEN

17h 05m

1 stop

6:35 am - 8:00 am

DEN

LIS

18h 25m

1 stop

$984Multiple Airlines

Mon, Jun 1 - Mon, Jun 8

9:20 am - 8:15 pm

LIS

DEN

17h 55m

2 stops

6:35 am - 8:00 am

DEN

LIS

18h 25m

1 stop

$987KLM

Tue, Jun 2 - Mon, Jun 8

United Airlines flights from Portugal to Denver

Our best United Airlines deals on Portugal to Denver flight tickets

United Airlines

Jun 3

LIS5:05 amLisbon Humberto Delgado

17h 35m

1 stop

DEN3:40 pmDenver Intl

Jun 8

DEN6:00 amDenver Intl

19h 20m

1 stop

LIS8:20 amLisbon Humberto Delgado

$997

United Airlines

Jun 1

LIS5:05 amLisbon Humberto Delgado

23h 22m

2 stops

DEN9:27 pmDenver Intl

Jun 9

DEN1:41 pmDenver Intl

11h 39m

1 stop

LIS8:20 amLisbon Humberto Delgado

$1,002

United Airlines

Jun 5

LIS6:15 amLisbon Humberto Delgado

19h 35m

1 stop

DEN6:50 pmDenver Intl

Jun 19

DEN11:59 pmDenver Intl

25h 21m

2 stops

LIS8:20 amLisbon Humberto Delgado

$1,008

Lufthansa flights from Portugal to Denver

Our best Lufthansa deals on Portugal to Denver flight tickets

Lufthansa

Aug 27

LIS5:05 amLisbon Humberto Delgado

17h 35m

1 stop

DEN3:40 pmDenver Intl

Sep 11

DEN4:45 pmDenver Intl

22h 10m

2 stops

LIS9:55 pmLisbon Humberto Delgado

$1,028

Lufthansa

May 21

LIS5:05 amLisbon Humberto Delgado

17h 35m

1 stop

DEN3:40 pmDenver Intl

May 28

DEN4:40 pmDenver Intl

22h 30m

2 stops

LIS10:10 pmLisbon Humberto Delgado

$1,237

Lufthansa

Jul 24

FNC9:40 amFunchal Madeira

17h 05m

1 stop

DEN7:45 pmDenver Intl

Aug 18

DEN5:40 pmDenver Intl

15h 40m

1 stop

FNC4:20 pmFunchal Madeira

$2,534

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

10:15 pm-6:15 pm

1 stop27h 00m

Denver Intl

Fri 6/19

8:00 pm-9:35 pm

1 stop18h 35m

$905

Quickest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

5:00 am-3:36 pm

2 stops17h 36m

Denver Intl

Sat 6/20

5:40 pm-5:50 pm

1 stop17h 10m

$955

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 5/28

5:00 am-8:15 pm

2 stops22h 15m

Denver Intl

Sun 5/31

5:40 pm-2:55 pm

1 stop14h 15m

$973

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

5:35 am-3:40 pm

1 stop17h 05m

Denver Intl

Fri 6/19

5:40 pm-8:50 am

1 stop32h 10m

$974

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 5/29

5:00 am-8:15 pm

2 stops22h 15m

Denver Intl

Tue 6/2

3:12 pm-5:50 pm

2 stops19h 38m

$975

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 6/6

5:00 am-5:14 pm

2 stops19h 14m

Denver Intl

Mon 6/22

5:40 pm-8:50 am

1 stop32h 10m

$977

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

5:00 am-5:14 pm

2 stops19h 14m

Denver Intl

Sat 6/20

5:40 pm-5:50 pm

1 stop17h 10m

$978

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

5:00 am-3:36 pm

2 stops17h 36m

Denver Intl

Fri 6/19

5:40 pm-8:50 am

1 stop32h 10m

$979

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/1

5:35 am-3:40 pm

1 stop17h 05m

Denver Intl

Mon 6/8

6:35 am-8:00 am

1 stop18h 25m

$984

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/2

9:20 am-8:15 pm

2 stops17h 55m

Denver Intl

Mon 6/8

6:35 am-8:00 am

1 stop18h 25m

$987

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 12% 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	22h 15m
Direct flights	None

The fastest flight from Portugal to Denver takes 22h 15m

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

Manitou Springs

Boulder

Longmont

Greeley

Keystone

Lakewood

Westminster

Cripple Creek

Thornton

Frisco

Centennial

Englewood

Winter Park

Grand Lake

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.