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Cheap flights from Colorado to Portugal from $264

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Portugal departing on 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Colorado to Portugal

Cheap round-trip flights

Logo
7:45 am - 10:00 pmDEN-LIS
31h 15m3 stops
Logo
9:35 pm - 4:33 pmLIS-DEN
25h 58m2 stops
$527
Find Deal
Sun, Sep 7 - Tue, Sep 16
Aer Lingus Logo
7:55 pm - 9:35 pmDEN-LIS
18h 40m1 stop
Aer Lingus Logo
10:15 pm - 5:59 pmLIS-DEN
26h 44m1 stop
$535Aer Lingus
Find Deal
Mon, Aug 25 - Tue, Sep 9
Scandinavian Airlines Logo
7:05 am - 10:05 pmDEN-LIS
32h 00m2 stops
Scandinavian Airlines Logo
7:00 am - 9:41 pmLIS-DEN
21h 41m2 stops
$577Scandinavian Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
United Airlines Logo
4:05 pm - 10:15 amDEN-LIS
11h 10m1 stop
United Airlines Logo
11:20 am - 2:06 pmLIS-DEN
33h 46m2 stops
$581United Airlines
Find Deal
Wed, Nov 12 - Tue, Nov 18
United Airlines Logo
11:50 pm - 8:55 amDEN-LIS
26h 05m2 stops
United Airlines Logo
10:55 am - 1:58 pmLIS-DEN
34h 03m2 stops
$582United Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 11
Air Canada Logo
11:15 am - 9:20 amDEN-LIS
15h 05m1 stop
Air Canada Logo
5:00 am - 4:40 pmLIS-DEN
18h 40m2 stops
$590Air Canada
Find Deal
Tue, Nov 4 - Tue, Nov 11
Air Canada Logo
1:25 pm - 9:20 amDEN-LIS
12h 55m1 stop
Air Canada Logo
5:00 am - 4:40 pmLIS-DEN
18h 40m2 stops
$596Air Canada
Find Deal
Sun, Nov 30 - Fri, Dec 12
British Airways Logo
12:33 pm - 12:05 pmDEN-LIS
16h 32m2 stops
British Airways Logo
6:30 am - 8:13 pmLIS-DEN
20h 43m2 stops
$602British Airways
Find Deal
Tue, Nov 4 - Tue, Nov 25
Scandinavian Airlines Logo
6:25 am - 3:45 pmDEN-LIS
26h 20m2 stops
Scandinavian Airlines Logo
7:00 am - 9:41 pmLIS-DEN
21h 41m2 stops
$627Scandinavian Airlines
Find Deal
Sun, Oct 19 - Thu, Oct 23
British Airways Logo
5:25 pm - 2:50 pmDEN-LIS
14h 25m1 stop
British Airways Logo
11:05 am - 11:03 pmLIS-DEN
18h 58m1 stop
$637British Airways
Find Deal
Sun, Nov 2 - Fri, Nov 14

British Airways flights from Colorado to Portugal

Our best British Airways deals on Colorado to Portugal flight tickets
British Airways
Nov 4
DEN12:33 pmDenver Intl
16h 32m
2 stops
LIS12:05 pmLisbon Humberto Delgado
Nov 25
LIS6:30 amLisbon Humberto Delgado
20h 43m
2 stops
DEN8:13 pmDenver Intl
$602
Find similar
British Airways
Nov 2
DEN5:25 pmDenver Intl
14h 25m
1 stop
LIS2:50 pmLisbon Humberto Delgado
Nov 14
LIS11:05 amLisbon Humberto Delgado
18h 58m
1 stop
DEN11:03 pmDenver Intl
$637
Find similar
British Airways
Oct 24
DEN6:35 pmDenver Intl
31h 05m
2 stops
OPO8:40 amPorto
Nov 1
OPO8:20 amPorto
19h 45m
2 stops
DEN10:05 pmDenver Intl
$726
Find similar

United Airlines flights from Colorado to Portugal

Our best United Airlines deals on Colorado to Portugal flight tickets
United Airlines
Nov 12
DEN4:05 pmDenver Intl
11h 10m
1 stop
LIS10:15 amLisbon Humberto Delgado
Nov 18
LIS11:20 amLisbon Humberto Delgado
33h 46m
2 stops
DEN2:06 pmDenver Intl
$581
Find similar
United Airlines
Dec 1
DEN11:50 pmDenver Intl
26h 05m
2 stops
LIS8:55 amLisbon Humberto Delgado
Dec 11
LIS10:55 amLisbon Humberto Delgado
34h 03m
2 stops
DEN1:58 pmDenver Intl
$582
Find similar
United Airlines
Nov 4
DEN11:15 amDenver Intl
15h 05m
1 stop
LIS9:20 amLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
18h 00m
1 stop
DEN4:00 pmDenver Intl
$583
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Colorado 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 August 7, 2025.
Use the filters below to find and compare flights from Colorado to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 9/7

7:45 am-10:00 pm

3 stops31h 15m

Lisbon Humberto Delgado

Tue 9/16

9:35 pm-4:33 pm

2 stops25h 58m

$527

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 8/25

7:55 pm-9:35 pm

1 stop18h 40m

Lisbon Humberto Delgado

Tue 9/9

10:15 pm-5:59 pm

1 stop26h 44m

$535

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 10/18

7:05 am-10:05 pm

2 stops32h 00m

Lisbon Humberto Delgado

Thu 10/23

7:00 am-9:41 pm

2 stops21h 41m

$577

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 11/12

4:05 pm-10:15 am

1 stop11h 10m

Lisbon Humberto Delgado

Tue 11/18

11:20 am-2:06 pm

2 stops33h 46m

$581

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 12/1

11:50 pm-8:55 am

2 stops26h 05m

Lisbon Humberto Delgado

Thu 12/11

10:55 am-1:58 pm

2 stops34h 03m

$582

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 11/4

11:15 am-9:20 am

1 stop15h 05m

Lisbon Humberto Delgado

Tue 11/11

5:00 am-4:40 pm

2 stops18h 40m

$590

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 11/30

1:25 pm-9:20 am

1 stop12h 55m

Lisbon Humberto Delgado

Fri 12/12

5:00 am-4:40 pm

2 stops18h 40m

$596

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 11/4

12:33 pm-12:05 pm

2 stops16h 32m

Lisbon Humberto Delgado

Tue 11/25

6:30 am-8:13 pm

2 stops20h 43m

$602

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 10/19

6:25 am-3:45 pm

2 stops26h 20m

Lisbon Humberto Delgado

Thu 10/23

7:00 am-9:41 pm

2 stops21h 41m

$627

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 11/2

5:25 pm-2:50 pm

1 stop14h 25m

Lisbon Humberto Delgado

Fri 11/14

11:05 am-11:03 pm

1 stop18h 58m

$637

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 Colorado 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 Colorado is in January. Flight prices, which tend to average around $740, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Colorado during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $771.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Colorado. The lowest ticket price found for a Wednesday departure recently was $950. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Saturday, with ticket prices averaging around $1,154.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the morning. Flights from Colorado to Portugal during this time can be as low as $995. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,110 per ticket.

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

You are more likely to see cheaper flights to Portugal from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $974 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Colorado for as low as $878 on momondo.

Can stopping save me money on Colorado to Portugal flights?

You could potentially save up to 18% on your flight if you consider stops on a Colorado to Portugal flight.

Cheap Colorado to Portugal flight deals and tips

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

Best Price Found

$264

Fastest flight time

10h 45m

Direct flights

None

Airports in Portugal

5 airports
The best one-way flight to Portugal from Colorado in the past 72 hours is $264. The best round-trip flight deal from Colorado to Portugal found on momondo in the last 72 hours is $527.
The fastest flight from Colorado to Portugal takes 10h 45m
There are no direct flights from Colorado to Portugal. Popular non-direct routes for this connection are Denver Intl Airport - Porto Airport, Denver Intl Airport - Lisbon Humberto Delgado Airport and Denver Intl Airport - Faro Airport.
There are 5 airports near Portugal: Faro (FAO), Lisbon Humberto Delgado (LIS), Ponta Delgada Nordela (PDL), Funchal Madeira (FNC), Porto (OPO)
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  • When did momondo last update prices for flights from Colorado to Portugal?

    Prices for flights from Colorado to Portugal are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado to Portugal?

  • How old do you have to be to fly from Colorado 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 Colorado 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 Colorado to Portugal

Compare and see reviews for airlines that fly from Colorado to Portugal with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $458Free CancellationRating
7.0
524 reviews
Search Icelandair flights
United AirlinesPriceFrom $490Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
DeltaPriceFrom $535Free CancellationRating
8.0
7,985 reviews
Search Delta flights
Virgin AtlanticPriceFrom $539Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $555Free CancellationRating
6.6
7,251 reviews
Search British Airways flights
Turkish AirlinesPriceFrom $555Free CancellationRating
7.3
3,932 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $569Free CancellationRating
7.4
1,465 reviews
Search Air France flights
KLMPriceFrom $599Free CancellationRating
7.8
1,381 reviews
Search KLM flights
LufthansaPriceFrom $624Free CancellationRating
6.8
7,296 reviews
Search Lufthansa flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
9,893 reviews
Search Air Canada flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portugal from Colorado.

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

Flights from Colorado 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 Colorado to Portugal?

momondo helps you find the best flight between Colorado and Portugal 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 Colorado to Portugal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Colorado and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $367
Flights to Portofrom $369
Flights to Funchalfrom $420
Flights to Farofrom $412
Flights to Ponta Delgadafrom $451
Flights to Lajesfrom $535
Flights to Hortafrom $590
Flights to Pico Islandfrom $544
Flights to Porto Santofrom $445
Flights to Velasfrom $593