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Cheap flights from Colorado to Portugal from $271

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 10/28. 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

Multiple Airlines Logo
8:09 am - 11:20 amCOS-LIS
20h 11m2 stops
Multiple Airlines Logo
3:30 pm - 5:22 pmLIS-COS
32h 52m2 stops
$578Multiple Airlines
Find Deal
jue., nov. 6 - mar., nov. 11
United Airlines Logo
12:45 pm - 9:30 amDEN-OPO
13h 45m1 stop
United Airlines Logo
6:00 am - 4:00 pmOPO-DEN
17h 00m1 stop
$580United Airlines
Find Deal
mar., nov. 4 - mié., nov. 12
KLM Logo
11:10 am - 10:30 amDEN-OPO
16h 20m2 stops
KLM Logo
6:05 am - 8:30 pmOPO-DEN
21h 25m2 stops
$598KLM
Find Deal
mié., ene. 14 - mar., ene. 20
Delta Logo
12:01 pm - 3:10 pmASE-LIS
20h 09m2 stops
Delta Logo
5:00 am - 11:21 amLIS-ASE
37h 21m2 stops
$617Delta
Find Deal
jue., nov. 13 - jue., nov. 27
KLM Logo
12:18 pm - 5:10 pmDEN-FNC
21h 52m2 stops
KLM Logo
10:25 am - 3:39 pmFNC-DEN
36h 14m2 stops
$639KLM
Find Deal
jue., nov. 13 - lun., nov. 17
Lufthansa Logo
4:45 pm - 9:50 pmDEN-LIS
22h 05m2 stops
Lufthansa Logo
6:10 am - 5:00 pmLIS-DEN
16h 50m2 stops
$639Lufthansa
Find Deal
mar., oct. 21 - jue., oct. 30
Air Canada Logo
7:46 am - 9:20 amDEN-LIS
18h 34m2 stops
Air Canada Logo
10:55 am - 4:40 pmLIS-DEN
36h 45m2 stops
$640Air Canada
Find Deal
jue., nov. 13 - jue., nov. 20
Delta Logo
11:59 am - 11:20 amDEN-LIS
17h 21m2 stops
Delta Logo
5:30 am - 6:55 pmLIS-DEN
20h 25m2 stops
$641Delta
Find Deal
mié., oct. 29 - jue., nov. 13
Lufthansa Logo
5:20 pm - 1:20 pmDEN-LIS
14h 00m1 stop
Lufthansa Logo
5:00 am - 10:07 pmLIS-DEN
24h 07m2 stops
$642Lufthansa
Find Deal
lun., oct. 27 - sáb., nov. 8
Air Canada Logo
1:25 pm - 9:20 amDEN-LIS
12h 55m1 stop
Air Canada Logo
10:55 am - 4:40 pmLIS-DEN
36h 45m2 stops
$646Air Canada
Find Deal
vie., nov. 14 - jue., nov. 20

Air Europa flights from Colorado to Portugal

Our best Air Europa deals on Colorado to Portugal flight tickets
Air Europa
Sep 24
DEN12:05 pmDenver Intl
35h 45m
2 stops
LIS6:50 amLisbon Humberto Delgado
Oct 7
LIS7:40 amLisbon Humberto Delgado
41h 39m
2 stops
DEN6:19 pmDenver Intl
$1,140
Find similar
Air Europa
Sep 23
DEN12:05 pmDenver Intl
24h 10m
2 stops
LIS7:15 pmLisbon Humberto Delgado
Oct 1
LIS8:05 pmLisbon Humberto Delgado
33h 30m
2 stops
DEN10:35 pmDenver Intl
$1,173
Find similar

Lufthansa flights from Colorado to Portugal

Our best Lufthansa deals on Colorado to Portugal flight tickets
Lufthansa
Oct 21
DEN4:45 pmDenver Intl
22h 05m
2 stops
LIS9:50 pmLisbon Humberto Delgado
Oct 30
LIS6:10 amLisbon Humberto Delgado
16h 50m
2 stops
DEN5:00 pmDenver Intl
$639
Find similar
Lufthansa
Oct 27
DEN5:20 pmDenver Intl
14h 00m
1 stop
LIS1:20 pmLisbon Humberto Delgado
Nov 8
LIS5:00 amLisbon Humberto Delgado
24h 07m
2 stops
DEN10:07 pmDenver Intl
$642
Find similar
Lufthansa
Oct 27
DEN5:20 pmDenver Intl
14h 00m
1 stop
LIS1:20 pmLisbon Humberto Delgado
Nov 8
LIS6:10 amLisbon Humberto Delgado
15h 25m
1 stop
DEN2:35 pmDenver Intl
$643
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 septiembre 22, 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

Colorado SpringsLisbon

COS - LIS

COSLIS

Colorado Springs

jue. 11/6

8:09 am-11:20 am

2 stops20h 11m

Lisbon Humberto Delgado

mar. 11/11

3:30 pm-5:22 pm

2 stops32h 52m

$578

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mar. 11/4

12:45 pm-9:30 am

1 stop13h 45m

Porto

mié. 11/12

6:00 am-4:00 pm

1 stop17h 00m

$580

DenverPorto

DEN - OPO

DENOPO

Denver Intl

mié. 1/14

11:10 am-10:30 am

2 stops16h 20m

Porto

mar. 1/20

6:05 am-8:30 pm

2 stops21h 25m

$598

AspenLisbon

ASE - LIS

ASELIS

Aspen Pitkin County

jue. 11/13

12:01 pm-3:10 pm

2 stops20h 09m

Lisbon Humberto Delgado

jue. 11/27

5:00 am-11:21 am

2 stops37h 21m

$617

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

jue. 11/13

12:18 pm-5:10 pm

2 stops21h 52m

Funchal Madeira

lun. 11/17

10:25 am-3:39 pm

2 stops36h 14m

$639

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mar. 10/21

4:45 pm-9:50 pm

2 stops22h 05m

Lisbon Humberto Delgado

jue. 10/30

6:10 am-5:00 pm

2 stops16h 50m

$639

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

jue. 11/13

7:46 am-9:20 am

2 stops18h 34m

Lisbon Humberto Delgado

jue. 11/20

10:55 am-4:40 pm

2 stops36h 45m

$640

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mié. 10/29

11:59 am-11:20 am

2 stops17h 21m

Lisbon Humberto Delgado

jue. 11/13

5:30 am-6:55 pm

2 stops20h 25m

$641

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

lun. 10/27

5:20 pm-1:20 pm

1 stop14h 00m

Lisbon Humberto Delgado

sáb. 11/8

5:00 am-10:07 pm

2 stops24h 07m

$642

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

vie. 11/14

1:25 pm-9:20 am

1 stop12h 55m

Lisbon Humberto Delgado

jue. 11/20

10:55 am-4:40 pm

2 stops36h 45m

$646

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 $727, 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 $774.

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 $959 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 $800 on momondo.

Can stopping save me money on Colorado to Portugal flights?

You could potentially save up to 1% 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

Direct flights

None
There are no direct flights from Colorado to Portugal. There are no popular flight routes from Colorado to Portugal.
Search flight deals

  • 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
545 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $539Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $548Free CancellationRating
7.9
7,971 reviews
Search Delta flights
Turkish AirlinesPriceFrom $555Free CancellationRating
7.3
3,975 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $569Free CancellationRating
7.4
1,467 reviews
Search Air France flights
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,386 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $582Free CancellationRating
7.4
1,492 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $597Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
KLMPriceFrom $599Free CancellationRating
7.8
1,387 reviews
Search KLM flights
LufthansaPriceFrom $621Free CancellationRating
6.8
7,421 reviews
Search Lufthansa 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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1 adult
mié. 10/22
mié. 10/29
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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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