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Cheap flights from Denver to Portugal from $281

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 7/22. 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
1 adult, Economy, 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.
Lufthansa Logo
4:15 pm - 12:50 pm
DEN
-
OPO
13h 35m
1 stop
Lufthansa Logo
4:10 pm - 3:35 pm
OPO
-
DEN
30h 25m
1 stop
$707Lufthansa
Sun, Nov 1 - Wed, Nov 11
Delta Logo
6:30 am - 9:05 am
DEN
-
OPO
19h 35m
1 stop
Delta Logo
5:00 am - 10:43 pm
OPO
-
DEN
24h 43m
2 stops
$719Delta
Sun, Nov 1 - Wed, Nov 11
United Airlines Logo
11:59 pm - 9:30 am
DEN
-
OPO
26h 31m
2 stops
United Airlines Logo
6:00 am - 3:35 pm
OPO
-
DEN
16h 35m
1 stop
$762United Airlines
Sat, Nov 14 - Sun, Nov 22
United Airlines Logo
4:04 pm - 9:30 am
DEN
-
OPO
34h 26m
1 stop
United Airlines Logo
6:00 am - 3:35 pm
OPO
-
DEN
16h 35m
1 stop
$768United Airlines
Sat, Nov 14 - Sun, Nov 22
Turkish Airlines Logo
8:25 pm - 9:55 am
DEN
-
LIS
30h 30m
1 stop
Turkish Airlines Logo
5:55 am - 6:25 pm
LIS
-
DEN
19h 30m
1 stop
$853Turkish Airlines
Sun, Sep 6 - Sat, Sep 19
Icelandair Logo
4:40 pm - 9:20 pm
DEN
-
LIS
21h 40m
1 stop
Icelandair Logo
10:20 pm - 12:40 pm
LIS
-
DEN
21h 20m
1 stop
$855Icelandair
Sat, Aug 8 - Sun, Aug 23
Icelandair Logo
4:40 pm - 9:20 pm
DEN
-
LIS
21h 40m
1 stop
Icelandair Logo
10:20 pm - 12:40 pm
LIS
-
DEN
21h 20m
1 stop
$859Icelandair
Sat, Aug 8 - Sun, Aug 23
Turkish Airlines Logo
8:25 pm - 11:20 pm
DEN
-
LIS
19h 55m
1 stop
Turkish Airlines Logo
11:00 am - 6:25 pm
LIS
-
DEN
38h 25m
1 stop
$863Turkish Airlines
Thu, Sep 10 - Fri, Sep 18
British Airways Logo
5:01 pm - 4:10 pm
DEN
-
FNC
16h 09m
1 stop
British Airways Logo
3:10 pm - 11:05 pm
FNC
-
DEN
38h 55m
2 stops
$866British Airways
Wed, Nov 25 - Wed, Dec 9
British Airways Logo
8:13 am - 4:10 pm
DEN
-
FNC
24h 57m
2 stops
British Airways Logo
3:10 pm - 11:05 pm
FNC
-
DEN
38h 55m
2 stops
$875British Airways
Wed, Nov 25 - Wed, Dec 9

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British Airways flights from Denver to Portugal

Our best British Airways deals on Denver to Portugal flight tickets
British Airways
Nov 10
DEN5:01 pmDenver Intl
17h 39m
1 stop
LIS5:40 pmLisbon Humberto Delgado
Nov 18
LIS7:05 amLisbon Humberto Delgado
15h 05m
1 stop
DEN3:10 pmDenver Intl
$810
British Airways
Oct 14
DEN6:35 pmDenver Intl
21h 40m
1 stop
LIS11:15 pmLisbon Humberto Delgado
Nov 4
LIS11:05 amLisbon Humberto Delgado
18h 58m
1 stop
DEN11:03 pmDenver Intl
$815
British Airways
Oct 14
DEN6:35 pmDenver Intl
32h 30m
1 stop
LIS10:05 amLisbon Humberto Delgado
Nov 4
LIS12:55 pmLisbon Humberto Delgado
33h 15m
1 stop
DEN3:10 pmDenver Intl
$824

Lufthansa flights from Denver to Portugal

Our best Lufthansa deals on Denver to Portugal flight tickets
Lufthansa
Nov 1
DEN4:15 pmDenver Intl
13h 35m
1 stop
OPO12:50 pmPorto
Nov 11
OPO4:10 pmPorto
30h 25m
1 stop
DEN3:35 pmDenver Intl
$707
Lufthansa
Nov 1
DEN4:15 pmDenver Intl
13h 35m
1 stop
OPO12:50 pmPorto
Nov 11
OPO6:00 amPorto
16h 35m
1 stop
DEN3:35 pmDenver Intl
$747
Lufthansa
Sep 29
DEN5:40 pmDenver Intl
15h 05m
1 stop
OPO3:45 pmPorto
Oct 8
OPO11:05 amPorto
34h 15m
1 stop
DEN2:20 pmDenver Intl
$812

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 June 20, 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

Sun 11/1

4:15 pm-12:50 pm

1 stop13h 35m

Porto

Wed 11/11

4:10 pm-3:35 pm

1 stop30h 25m

$707

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 11/1

6:30 am-9:05 am

1 stop19h 35m

Porto

Wed 11/11

5:00 am-10:43 pm

2 stops24h 43m

$719

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 11/14

11:59 pm-9:30 am

2 stops26h 31m

Porto

Sun 11/22

6:00 am-3:35 pm

1 stop16h 35m

$762

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 11/14

4:04 pm-9:30 am

1 stop34h 26m

Porto

Sun 11/22

6:00 am-3:35 pm

1 stop16h 35m

$768

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 9/6

8:25 pm-9:55 am

1 stop30h 30m

Lisbon Humberto Delgado

Sat 9/19

5:55 am-6:25 pm

1 stop19h 30m

$853
Quickest round-trip

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 8/8

4:40 pm-9:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sun 8/23

10:20 pm-12:40 pm

1 stop21h 20m

$855

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 8/8

4:40 pm-9:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sun 8/23

10:20 pm-12:40 pm

1 stop21h 20m

$859

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 9/10

8:25 pm-11:20 pm

1 stop19h 55m

Lisbon Humberto Delgado

Fri 9/18

11:00 am-6:25 pm

1 stop38h 25m

$863

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Wed 11/25

5:01 pm-4:10 pm

1 stop16h 09m

Funchal Madeira

Wed 12/9

3:10 pm-11:05 pm

2 stops38h 55m

$866

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Wed 11/25

8:13 am-4:10 pm

2 stops24h 57m

Funchal Madeira

Wed 12/9

3:10 pm-11:05 pm

2 stops38h 55m

$875

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 March. Flight prices, which tend to average around $450, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Denver during February instead. Flights to Portugal in February, while not as cheap as those in March, still average around $464.

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 $923 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 $791 on momondo.

Can stopping save me money on Denver to Portugal flights?

You could potentially save up to 5% 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 35m

Direct flights

None
The fastest flight from Denver to Portugal takes 11h 35m
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 $464Free CancellationRating
7.0
680 reviews
Search Icelandair flights
KLMPriceFrom $551Free CancellationRating
7.8
1,530 reviews
Search KLM flights
LufthansaPriceFrom $559Free CancellationRating
6.8
8,084 reviews
Search Lufthansa flights
DeltaPriceFrom $575Free CancellationRating
7.8
8,422 reviews
Search Delta flights
American AirlinesPriceFrom $575Free CancellationRating
7.1
11,722 reviews
Search American Airlines flights
United AirlinesPriceFrom $576Free CancellationRating
7.4
9,866 reviews
Search United Airlines flights
Aer LingusPriceFrom $594Free CancellationRating
7.3
1,609 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $596Free CancellationRating
7.1
11,229 reviews
Search Air Canada flights
British AirwaysPriceFrom $622Free CancellationRating
6.7
8,062 reviews
Search British Airways flights
Turkish AirlinesPriceFrom $635Free CancellationRating
7.4
4,409 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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