What airlines fly to Portugal?

United Airlines, Lufthansa and British Airways are the top three most popular airlines that fly to Portugal from Denver according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 14 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Denver Intl to Portugal?

Icelandair, British Airways, and TAP AIR PORTUGAL are the most popular carriers operating from Denver Intl 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?

There are 14 operators available for flights from Denver Intl Airport to Portugal as of December 2025.

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.

$261 Cheap Flights from Denver to Portugal in 2025/26

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Cheap round-trip flights

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3:40 pm - 8:20 pmDEN-LIS

21h 40m1 stop

9:20 pm - 7:05 pmLIS-DEN

27h 45m1 stop

$437Icelandair

Find Deal

Sat, Feb 28 - Sun, Mar 8

3:40 pm - 8:20 pmDEN-LIS

21h 40m1 stop

9:20 pm - 6:05 pmLIS-DEN

27h 45m1 stop

$464Icelandair

Find Deal

Sat, Feb 28 - Thu, Mar 5

6:10 pm - 8:10 amDEN-LIS

31h 00m2 stops

5:00 am - 1:40 pmLIS-DEN

15h 40m1 stop

$466Lufthansa

Find Deal

Sun, Jan 11 - Tue, Jan 27

3:47 pm - 3:05 pmDEN-LIS

16h 18m2 stops

5:00 am - 1:40 pmLIS-DEN

15h 40m1 stop

$479Lufthansa

Find Deal

Sun, Jan 11 - Tue, Jan 27

12:07 pm - 5:10 pmDEN-FNC

22h 03m2 stops

10:25 am - 9:14 pmFNC-DEN

41h 49m2 stops

$651KLM

Find Deal

Thu, Feb 5 - Mon, Feb 9

6:25 pm - 5:45 pmDEN-FAO

17h 20m1 stop

3:35 pm - 4:35 pmFAO-DEN

32h 00m1 stop

$691British Airways

Find Deal

Wed, Mar 11 - Tue, May 12

6:25 pm - 5:45 pmDEN-FAO

17h 20m1 stop

7:10 pm - 4:35 pmFAO-DEN

28h 25m1 stop

$751British Airways

Find Deal

Wed, Mar 11 - Sun, May 17

12:12 pm - 5:50 pmDEN-FNC

22h 38m2 stops

10:25 am - 5:22 pmFNC-DEN

36h 57m2 stops

$809KLM

Find Deal

Fri, Feb 27 - Mon, Mar 9

7:45 am - 11:00 amDEN-TER

21h 15m2 stops

6:40 am - 10:42 amTER-DEN

34h 02m2 stops

$1,292TAP AIR PORTUGAL

Find Deal

Fri, Jan 23 - Mon, Jan 26

4:03 pm - 11:45 amDEN-TER

37h 42m2 stops

11:50 am - 9:22 pmTER-DEN

39h 32m2 stops

$2,155TAP AIR PORTUGAL

Find Deal

Sat, Dec 13 - Tue, Dec 16

SWISS flights from Denver to Portugal

Our best SWISS deals on Denver to Portugal flight tickets

SWISS

Mar 8

DEN6:35 pmDenver Intl

31h 35m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 17

LIS6:45 pmLisbon Humberto Delgado

34h 45m

2 stops

DEN11:30 pmDenver Intl

$537

Find similar

SWISS

Mar 3

DEN11:15 amDenver Intl

17h 10m

2 stops

LIS11:25 amLisbon Humberto Delgado

Mar 12

LIS1:20 pmLisbon Humberto Delgado

38h 35m

2 stops

DEN9:55 pmDenver Intl

$543

Find similar

SWISS

Mar 1

DEN5:35 pmDenver Intl

35h 10m

2 stops

LIS11:45 amLisbon Humberto Delgado

Mar 12

LIS6:45 pmLisbon Humberto Delgado

34h 45m

2 stops

DEN11:30 pmDenver Intl

$546

Find similar

Lufthansa flights from Denver to Portugal

Our best Lufthansa deals on Denver to Portugal flight tickets

Lufthansa

Jan 11

DEN6:10 pmDenver Intl

31h 00m

2 stops

LIS8:10 amLisbon Humberto Delgado

Jan 27

LIS5:00 amLisbon Humberto Delgado

15h 40m

1 stop

DEN1:40 pmDenver Intl

$466

Find similar

Lufthansa

Jan 11

DEN3:47 pmDenver Intl

16h 18m

2 stops

LIS3:05 pmLisbon Humberto Delgado

Jan 27

LIS5:00 amLisbon Humberto Delgado

15h 40m

1 stop

DEN1:40 pmDenver Intl

$479

Find similar

Lufthansa

Dec 3

DEN4:05 pmDenver Intl

11h 10m

1 stop

LIS10:15 amLisbon Humberto Delgado

Dec 10

LIS5:00 amLisbon Humberto Delgado

18h 30m

2 stops

DEN4:30 pmDenver Intl

$489

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 2/28

3:40 pm-8:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sun 3/8

9:20 pm-7:05 pm

1 stop27h 45m

$437

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 2/28

3:40 pm-8:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Thu 3/5

9:20 pm-6:05 pm

1 stop27h 45m

$464

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/11

6:10 pm-8:10 am

2 stops31h 00m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$466

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/11

3:47 pm-3:05 pm

2 stops16h 18m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$479

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Thu 2/5

12:07 pm-5:10 pm

2 stops22h 03m

Funchal Madeira

Mon 2/9

10:25 am-9:14 pm

2 stops41h 49m

$651

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 3/11

6:25 pm-5:45 pm

1 stop17h 20m

Faro

Tue 5/12

3:35 pm-4:35 pm

1 stop32h 00m

$691

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 3/11

6:25 pm-5:45 pm

1 stop17h 20m

Faro

Sun 5/17

7:10 pm-4:35 pm

1 stop28h 25m

$751

DenverFunchal

DEN - FNC

DENFNC

Denver Intl

Fri 2/27

12:12 pm-5:50 pm

2 stops22h 38m

Funchal Madeira

Mon 3/9

10:25 am-5:22 pm

2 stops36h 57m

$809

DenverLajes

DEN - TER

DENTER

Denver Intl

Fri 1/23

7:45 am-11:00 am

2 stops21h 15m

Lajes

Mon 1/26

6:40 am-10:42 am

2 stops34h 02m

$1,292

DenverLajes

DEN - TER

DENTER

Denver Intl

Sat 12/13

4:03 pm-11:45 am

2 stops37h 42m

Lajes

Tue 12/16

11:50 am-9:22 pm

2 stops39h 32m

$2,155

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $676, 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 January instead. Flights to Portugal in January, while not as cheap as those in November, still average around $740.

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 Denver. 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 Denver 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 Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $942 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 $823 on momondo.

Can stopping save me money on Denver to Portugal flights?

You could potentially save up to 30% 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 10m
Direct flights	None

The fastest flight from Denver to Portugal takes 11h 10m

There are no direct flights from Denver to Portugal. There are no popular flight routes from Denver to Portugal.

Search flight deals

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?
There are 14 operators available for flights from Denver Intl Airport to Portugal as of December 2025.
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
Icelandair	PriceFrom $458	Free Cancellation	Rating 7.0 584 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $539	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $551	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights
Turkish Airlines	PriceFrom $555	Free Cancellation	Rating 7.3 4,071 reviews	Search Turkish Airlines flights
British Airways	PriceFrom $555	Free Cancellation	Rating 6.7 7,550 reviews	Search British Airways flights
Lufthansa	PriceFrom $565	Free Cancellation	Rating 6.8 7,603 reviews	Search Lufthansa flights
Air France	PriceFrom $569	Free Cancellation	Rating 7.4 1,500 reviews	Search Air France flights
KLM	PriceFrom $575	Free Cancellation	Rating 7.7 1,426 reviews	Search KLM flights
American Airlines	PriceFrom $594	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Air Canada	PriceFrom $596	Free Cancellation	Rating 7.1 10,496 reviews	Search Air Canada 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

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.

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $363

Flights to Portofrom $338

Flights to Funchalfrom $415

Flights to Farofrom $385

Flights to Ponta Delgadafrom $405

Flights to Lajesfrom $446

Flights to Hortafrom $564

Flights to Pico Islandfrom $560

Flights to Porto Santofrom $580

Flights to Velasfrom $573

Cheap flights from Denver to Portugal from $261

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 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Denver to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

SWISS flights from Denver to Portugal

Our best SWISS deals on Denver to Portugal flight tickets

Lufthansa flights from Denver to Portugal

Our best Lufthansa deals on Denver to Portugal flight tickets

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Use the filters below to find and compare flights from Denver to Portugal that are best for you.

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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?

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

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 Denver 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?

Can stopping save me money on Denver to Portugal flights?

You could potentially save up to 30% on your flight if you consider stops on a Denver to Portugal flight.

What is the cheapest airline that flies from Denver Intl to Portugal?

Icelandair, British Airways, and TAP AIR PORTUGAL are the most popular carriers operating from Denver Intl to Portugal

What airlines fly to Portugal?

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

Direct flights

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

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?

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

Best airlines flying from Denver to Portugal

Compare and see reviews for airlines that fly from Denver to Portugal with momondo

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

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