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Cheap flights from Portugal to Denver from $408

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Denver departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portugal to Denver

Recent round-trip flight deals from Portugal to Denver

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:10 am - 9:11 am
LIS
-
DEN
30h 01m
1 stop
Multiple Airlines Logo
12:30 pm - 8:20 pm
DEN
-
LIS
25h 50m
2 stops
$831Multiple Airlines
Mon, Mar 2 - Wed, Mar 18
Multiple Airlines Logo
10:15 am - 10:55 pm
LIS
-
DEN
18h 40m
1 stop
Multiple Airlines Logo
7:15 am - 8:30 am
DEN
-
LIS
42h 15m
2 stops
$850Multiple Airlines
Fri, Mar 13 - Sun, Apr 19
Multiple Airlines Logo
10:15 am - 10:55 pm
LIS
-
DEN
18h 40m
1 stop
Multiple Airlines Logo
11:05 pm - 5:35 pm
DEN
-
LIS
35h 30m
2 stops
$861Multiple Airlines
Fri, Mar 13 - Wed, Apr 22
Multiple Airlines Logo
10:15 am - 10:55 pm
LIS
-
DEN
18h 40m
1 stop
Multiple Airlines Logo
11:05 pm - 1:40 pm
DEN
-
LIS
31h 35m
2 stops
$867Multiple Airlines
Fri, Mar 13 - Tue, Apr 21
Lufthansa Logo
7:45 am - 6:55 pm
LIS
-
DEN
18h 10m
1 stop
Lufthansa Logo
11:30 am - 10:15 am
DEN
-
LIS
15h 45m
1 stop
$868Lufthansa
Tue, Feb 24 - Wed, Feb 25
Multiple Airlines Logo
10:10 am - 8:26 am
LIS
-
DEN
28h 16m
1 stop
Multiple Airlines Logo
7:15 am - 8:30 am
DEN
-
LIS
42h 15m
2 stops
$872Multiple Airlines
Mon, Mar 16 - Sun, Apr 19
Lufthansa Logo
5:00 am - 2:40 pm
LIS
-
DEN
15h 40m
1 stop
Lufthansa Logo
1:30 pm - 10:30 am
DEN
-
LIS
14h 00m
1 stop
$876Lufthansa
Mon, Mar 16 - Tue, Apr 21
Lufthansa Logo
5:00 am - 4:00 pm
LIS
-
DEN
18h 00m
1 stop
Lufthansa Logo
4:00 pm - 10:15 am
DEN
-
LIS
12h 15m
1 stop
$880Lufthansa
Thu, Mar 5 - Wed, Mar 18
Air Canada Logo
7:55 am - 7:55 pm
FNC
-
DEN
19h 00m
2 stops
Air Canada Logo
9:51 am - 1:35 pm
DEN
-
FNC
21h 44m
2 stops
$1,414Air Canada
Thu, Mar 5 - Mon, Mar 9
Air Canada Logo
7:55 am - 7:55 pm
FNC
-
DEN
19h 00m
2 stops
Air Canada Logo
9:51 am - 1:35 pm
DEN
-
FNC
21h 44m
2 stops
$1,456Air Canada
Thu, Mar 5 - Mon, Mar 9

Lufthansa flights from Portugal to Denver

Our best Lufthansa deals on Portugal to Denver flight tickets
Lufthansa
Feb 24
LIS7:45 amLisbon Humberto Delgado
18h 10m
1 stop
DEN6:55 pmDenver Intl
Feb 25
DEN11:30 amDenver Intl
15h 45m
1 stop
LIS10:15 amLisbon Humberto Delgado
$868
Lufthansa
Mar 11
LIS5:00 amLisbon Humberto Delgado
23h 06m
2 stops
DEN10:06 pmDenver Intl
Mar 25
DEN5:20 pmDenver Intl
14h 00m
1 stop
LIS1:20 pmLisbon Humberto Delgado
$871
Lufthansa
Feb 26
LIS5:00 amLisbon Humberto Delgado
15h 40m
1 stop
DEN1:40 pmDenver Intl
Mar 11
DEN9:20 pmDenver Intl
20h 10m
1 stop
LIS11:30 pmLisbon Humberto Delgado
$876

United Airlines flights from Portugal to Denver

Our best United Airlines deals on Portugal to Denver flight tickets
United Airlines
Mar 17
LIS5:00 amLisbon Humberto Delgado
15h 40m
1 stop
DEN2:40 pmDenver Intl
Apr 18
DEN7:45 amDenver Intl
19h 50m
1 stop
LIS10:35 amLisbon Humberto Delgado
$897
United Airlines
Apr 15
LIS5:05 amLisbon Humberto Delgado
15h 30m
1 stop
DEN1:35 pmDenver Intl
Apr 19
DEN3:55 pmDenver Intl
11h 35m
1 stop
LIS10:30 amLisbon Humberto Delgado
$898
United Airlines
Mar 11
LIS5:00 amLisbon Humberto Delgado
15h 40m
1 stop
DEN2:40 pmDenver Intl
Mar 25
DEN12:33 pmDenver Intl
13h 37m
1 stop
LIS8:10 amLisbon Humberto Delgado
$899

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Denver 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 February 9, 2026.
Use the filters below to find and compare flights from Portugal to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 3/2

10:10 am-9:11 am

1 stop30h 01m

Denver Intl

Wed 3/18

12:30 pm-8:20 pm

2 stops25h 50m

$831

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 3/13

10:15 am-10:55 pm

1 stop18h 40m

Denver Intl

Sun 4/19

7:15 am-8:30 am

2 stops42h 15m

$850

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 3/13

10:15 am-10:55 pm

1 stop18h 40m

Denver Intl

Wed 4/22

11:05 pm-5:35 pm

2 stops35h 30m

$861

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 3/13

10:15 am-10:55 pm

1 stop18h 40m

Denver Intl

Tue 4/21

11:05 pm-1:40 pm

2 stops31h 35m

$867

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 2/24

7:45 am-6:55 pm

1 stop18h 10m

Denver Intl

Wed 2/25

11:30 am-10:15 am

1 stop15h 45m

$868

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 3/16

10:10 am-8:26 am

1 stop28h 16m

Denver Intl

Sun 4/19

7:15 am-8:30 am

2 stops42h 15m

$872

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 3/16

5:00 am-2:40 pm

1 stop15h 40m

Denver Intl

Tue 4/21

1:30 pm-10:30 am

1 stop14h 00m

$876

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 3/5

5:00 am-4:00 pm

1 stop18h 00m

Denver Intl

Wed 3/18

4:00 pm-10:15 am

1 stop12h 15m

$880

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Thu 3/5

7:55 am-7:55 pm

2 stops19h 00m

Denver Intl

Mon 3/9

9:51 am-1:35 pm

2 stops21h 44m

$1,414

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Thu 3/5

7:55 am-7:55 pm

2 stops19h 00m

Denver Intl

Mon 3/9

9:51 am-1:35 pm

2 stops21h 44m

$1,456

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 Denver from

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

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Portugal is in March. Flight prices, which tend to average around $874, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in March, then you should wait until November to fly from Portugal, when ticket prices are also cheap, with an average price of $875.

Can stopping save me money on Portugal to Denver flights?

You could potentially save up to 3% 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

15h 30m

Direct flights

None
The fastest flight from Portugal to Denver takes 15h 30m
There are no direct flights from Portugal to Denver. There are no popular flight routes from Portugal to Denver.
Search flight deals

  • 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 many operators does momondo search for flights from Portugal to Denver Intl Airport?

  • 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.

Best airlines flying from Portugal to Denver

Compare and see reviews for airlines that fly from Portugal to Denver with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $874Free CancellationRating
7.4
9,262 reviews
Search United Airlines flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Manitou Springs
Boulder
Cripple Creek
Longmont
Keystone
Greeley
Lakewood
Westminster
Thornton
Frisco
Copper Mountain
Winter Park
Centennial
Grand Lake
Englewood

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.

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