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Cheap flights from Denver to Portugal from $354

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 Portugal departing on 10/12. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:05 pm - 9:45 am
DEN
-
OPO
31h 40m
2 stops
United Airlines Logo
12:35 pm - 9:25 pm
OPO
-
DEN
15h 50m
1 stop
$731United Airlines
Sat, Oct 17 - Tue, Nov 3
United Airlines Logo
11:59 pm - 9:30 am
DEN
-
OPO
27h 31m
2 stops
United Airlines Logo
6:00 am - 5:00 pm
OPO
-
DEN
17h 00m
1 stop
$775United Airlines
Sat, Oct 24 - Wed, Oct 28
Turkish Airlines Logo
8:25 pm - 3:40 pm
DEN
-
OPO
36h 15m
1 stop
Turkish Airlines Logo
6:10 am - 6:25 pm
OPO
-
DEN
19h 15m
1 stop
$782Turkish Airlines
Tue, Sep 29 - Thu, Oct 8
Turkish Airlines Logo
8:25 pm - 3:50 pm
DEN
-
OPO
36h 25m
1 stop
Turkish Airlines Logo
4:50 pm - 6:25 pm
OPO
-
DEN
32h 35m
1 stop
$789Turkish Airlines
Sat, Sep 12 - Mon, Sep 21
British Airways Logo
6:25 pm - 11:10 am
DEN
-
FNC
34h 45m
1 stop
British Airways Logo
3:10 pm - 3:30 pm
FNC
-
DEN
31h 20m
1 stop
$855British Airways
Tue, Oct 27 - Wed, Nov 4
Air Canada Logo
7:51 am - 9:20 am
DEN
-
LIS
18h 29m
2 stops
Air Canada Logo
5:00 am - 5:44 pm
LIS
-
DEN
19h 44m
2 stops
$859Air Canada
Wed, Oct 14 - Wed, Nov 4
British Airways Logo
6:25 pm - 11:10 am
DEN
-
FNC
34h 45m
1 stop
British Airways Logo
12:10 pm - 3:30 pm
FNC
-
DEN
34h 20m
1 stop
$905British Airways
Tue, Oct 27 - Fri, Nov 6
Lufthansa Logo
4:05 pm - 3:05 pm
DEN
-
FAO
16h 00m
1 stop
Lufthansa Logo
3:55 pm - 2:20 pm
FAO
-
DEN
29h 25m
1 stop
$970Lufthansa
Sun, May 10 - Thu, May 21
Lufthansa Logo
4:05 pm - 3:05 pm
DEN
-
FAO
16h 00m
1 stop
Lufthansa Logo
3:55 pm - 2:20 pm
FAO
-
DEN
29h 25m
1 stop
$975Lufthansa
Sun, May 10 - Thu, May 21
Air Canada Logo
9:35 am - 12:50 pm
DEN
-
TER
21h 15m
3 stops
Air Canada Logo
7:05 am - 12:30 pm
TER
-
DEN
35h 25m
2 stops
$8,538Air Canada
Mon, Jun 8 - Mon, Jun 15

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Turkish Airlines flights from Denver to Portugal

Our best Turkish Airlines deals on Denver to Portugal flight tickets
Turkish Airlines
Sep 29
DEN8:25 pmDenver Intl
36h 15m
1 stop
OPO3:40 pmPorto
Oct 8
OPO6:10 amPorto
19h 15m
1 stop
DEN6:25 pmDenver Intl
$782
Turkish Airlines
Sep 24
DEN8:25 pmDenver Intl
30h 20m
1 stop
OPO9:45 amPorto
Oct 22
OPO6:10 amPorto
19h 15m
1 stop
DEN6:25 pmDenver Intl
$789
Turkish Airlines
Sep 3
DEN8:25 pmDenver Intl
30h 20m
1 stop
OPO9:45 amPorto
Sep 7
OPO4:50 pmPorto
32h 35m
1 stop
DEN6:25 pmDenver Intl
$790

British Airways flights from Denver to Portugal

Our best British Airways deals on Denver to Portugal flight tickets
British Airways
Oct 27
DEN6:25 pmDenver Intl
34h 45m
1 stop
FNC11:10 amFunchal Madeira
Nov 4
FNC3:10 pmFunchal Madeira
31h 20m
1 stop
DEN3:30 pmDenver Intl
$855
British Airways
Sep 23
DEN6:40 pmDenver Intl
14h 00m
1 stop
LIS3:40 pmLisbon Humberto Delgado
Nov 19
LIS11:05 amLisbon Humberto Delgado
18h 58m
1 stop
DEN11:03 pmDenver Intl
$865
British Airways
Oct 21
DEN12:53 pmDenver Intl
13h 12m
1 stop
LIS9:05 amLisbon Humberto Delgado
Oct 30
LIS11:05 amLisbon Humberto Delgado
17h 18m
1 stop
DEN10:23 pmDenver Intl
$872

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Portugal 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 April 30, 2026.
Use the filters below to find and compare flights from Denver to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 10/17

7:05 pm-9:45 am

2 stops31h 40m

Porto

Tue 11/3

12:35 pm-9:25 pm

1 stop15h 50m

$731

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 10/24

11:59 pm-9:30 am

2 stops27h 31m

Porto

Wed 10/28

6:00 am-5:00 pm

1 stop17h 00m

$775

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 9/29

8:25 pm-3:40 pm

1 stop36h 15m

Porto

Thu 10/8

6:10 am-6:25 pm

1 stop19h 15m

$782

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 9/12

8:25 pm-3:50 pm

1 stop36h 25m

Porto

Mon 9/21

4:50 pm-6:25 pm

1 stop32h 35m

$789

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Tue 10/27

6:25 pm-11:10 am

1 stop34h 45m

Funchal Madeira

Wed 11/4

3:10 pm-3:30 pm

1 stop31h 20m

$855
Quickest round-trip

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 10/14

7:51 am-9:20 am

2 stops18h 29m

Lisbon Humberto Delgado

Wed 11/4

5:00 am-5:44 pm

2 stops19h 44m

$859

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Tue 10/27

6:25 pm-11:10 am

1 stop34h 45m

Funchal Madeira

Fri 11/6

12:10 pm-3:30 pm

1 stop34h 20m

$905

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 5/10

4:05 pm-3:05 pm

1 stop16h 00m

Faro

Thu 5/21

3:55 pm-2:20 pm

1 stop29h 25m

$970

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 5/10

4:05 pm-3:05 pm

1 stop16h 00m

Faro

Thu 5/21

3:55 pm-2:20 pm

1 stop29h 25m

$975

DenverLajes

DEN - TER

DENTER

Denver Intl

Mon 6/8

9:35 am-12:50 pm

3 stops21h 15m

Lajes

Mon 6/15

7:05 am-12:30 pm

2 stops35h 25m

$8,538

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 Portugal from

How to get the cheapest flight ticket from Denver to Portugal

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 Portugal?

The cheapest month to fly to Portugal from Denver is in November. Flight prices, which tend to average around $410, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Denver during March instead. Flights to Portugal in March, while not as cheap as those in November, still average around $450.

How far in advance should I book a flight from Denver to Portugal?

You are more likely to see cheaper flights to Portugal from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $902 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Denver for as low as $766 on momondo.

Can stopping save me money on Denver to Portugal flights?

You could potentially save up to 3% on your flight if you consider stops on a Denver to Portugal flight.

Cheap Denver to Portugal flight deals and tips

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

Fastest flight time

11h 21m

Direct flights

None
The fastest flight from Denver to Portugal takes 11h 21m
There are no direct flights from Denver to Portugal. There are no popular flight routes from Denver to Portugal.
Search flight deals

Frequently asked questions about flying from Denver to Portugal

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

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

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

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

    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 Portugal.

  • What documentation or ID do you need to fly to Portugal?

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

Best airlines flying from Denver to Portugal

Compare and see reviews for airlines that fly from Denver to Portugal with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $410Free CancellationRating
7.0
646 reviews
Search Icelandair flights
LufthansaPriceFrom $559Free CancellationRating
6.8
7,962 reviews
Search Lufthansa flights
DeltaPriceFrom $575Free CancellationRating
7.9
8,465 reviews
Search Delta flights
United AirlinesPriceFrom $579Free CancellationRating
7.4
9,677 reviews
Search United Airlines flights
Air CanadaPriceFrom $595Free CancellationRating
7.1
10,982 reviews
Search Air Canada flights
KLMPriceFrom $599Free CancellationRating
7.8
1,512 reviews
Search KLM flights
Virgin AtlanticPriceFrom $603Free CancellationRating
7.4
688 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $606Free CancellationRating
6.7
7,937 reviews
Search British Airways flights
American AirlinesPriceFrom $630Free CancellationRating
7.1
11,681 reviews
Search American Airlines flights
Turkish AirlinesPriceFrom $640Free CancellationRating
7.4
4,346 reviews
Search Turkish Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Portugal. momondo saves you time and could save you money on your trip.

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

Flights from Denver to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Denver to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Portugal from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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