What is the cheapest airline that flies from Denver Intl to Lisbon Humberto Delgado?

Icelandair and British Airways are the most popular carriers operating from Denver Intl to Lisbon Humberto Delgado

Which layover airport offers the lowest fares from Denver to Lisbon?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $601.

Which layover airport has the shortest connection time from Denver to Lisbon?

Munich (MUC) has the shortest average layover time for this route: 1h 15m.

What airlines fly to Lisbon?

United Airlines, British Airways and Lufthansa are the top three most popular airlines that fly to Lisbon 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 Lisbon. Keep in mind that there are 13 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Denver to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 11h 22m.

Which airport is the most popular layover for flights between Denver and Lisbon?

Munich (MUC) was the most common stop: 18% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?

As of December 2025, there are 13 operators available to choose from for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Denver Intl Airport to Lisbon Humberto Delgado Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

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

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

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Denver to Lisbon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:20 pm - 3:15 pm

DEN

LIS

15h 55m1 stop

5:00 am - 1:40 pm

LIS

DEN

15h 40m1 stop

$507Lufthansa

Tue, Jan 20 - Tue, Jan 27

10:20 am - 8:10 am

DEN

LIS

14h 50m1 stop

5:00 am - 5:00 pm

LIS

DEN

18h 00m1 stop

$530Multiple Airlines

Wed, Feb 25 - Wed, Mar 11

9:59 am - 8:10 am

DEN

LIS

15h 11m1 stop

10:15 am - 5:58 pm

LIS

DEN

14h 43m1 stop

$537Brussels Airlines

Sun, Jan 11 - Tue, Jan 27

4:20 pm - 3:15 pm

DEN

LIS

15h 55m1 stop

5:00 am - 4:40 pm

LIS

DEN

18h 40m2 stops

$539Multiple Airlines

Mon, Feb 9 - Thu, Feb 19

1:25 pm - 2:35 pm

DEN

LIS

18h 10m2 stops

5:00 am - 4:40 pm

LIS

DEN

18h 40m2 stops

$544Multiple Airlines

Mon, Feb 9 - Thu, Feb 19

4:20 pm - 11:30 pm

DEN

LIS

24h 10m1 stop

5:00 am - 4:00 pm

LIS

DEN

18h 00m1 stop

$547Lufthansa

Mon, Feb 9 - Thu, Feb 19

1:25 pm - 9:20 am

DEN

LIS

12h 55m1 stop

6:10 am - 5:00 pm

LIS

DEN

16h 50m2 stops

$549Multiple Airlines

Wed, Feb 25 - Wed, Mar 11

1:25 pm - 9:20 am

DEN

LIS

12h 55m1 stop

2:10 pm - 2:35 pm

LIS

DEN

31h 25m1 stop

$551Multiple Airlines

Mon, Jan 19 - Mon, Jan 26

11:15 am - 9:20 am

DEN

LIS

15h 05m1 stop

5:00 am - 1:40 pm

LIS

DEN

15h 40m1 stop

$552Multiple Airlines

Tue, Jan 13 - Tue, Jan 27

12:49 pm - 8:10 am

DEN

LIS

12h 21m1 stop

5:00 am - 1:40 pm

LIS

DEN

15h 40m1 stop

$553United Airlines

Mon, Jan 12 - Tue, Jan 27

British Airways flights from Denver to Lisbon

Our best British Airways deals on Denver to Lisbon flight tickets

British Airways

Dec 30

DEN12:01 pmDenver Intl

14h 04m

1 stop

LIS9:05 amLisbon Humberto Delgado

Jan 13

LIS11:05 amLisbon Humberto Delgado

18h 19m

1 stop

DEN10:24 pmDenver Intl

$564

Find similar

British Airways

Apr 14

DEN2:51 pmDenver Intl

17h 39m

2 stops

LIS3:30 pmLisbon Humberto Delgado

Apr 28

LIS6:45 pmLisbon Humberto Delgado

32h 48m

2 stops

DEN8:33 pmDenver Intl

$576

Find similar

British Airways

Apr 12

DEN6:40 pmDenver Intl

14h 40m

1 stop

LIS4:20 pmLisbon Humberto Delgado

Apr 27

LIS5:05 pmLisbon Humberto Delgado

30h 25m

1 stop

DEN4:30 pmDenver Intl

$578

Find similar

Air Canada flights from Denver to Lisbon

Our best Air Canada deals on Denver to Lisbon flight tickets

Air Canada

Jan 12

DEN8:25 pmDenver Intl

29h 55m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 30

LIS11:20 amLisbon Humberto Delgado

34h 31m

2 stops

DEN2:51 pmDenver Intl

$562

Find similar

Air Canada

Jan 11

DEN11:15 amDenver Intl

39h 05m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 30

LIS11:20 amLisbon Humberto Delgado

34h 31m

2 stops

DEN2:51 pmDenver Intl

$564

Find similar

Air Canada

Dec 30

DEN5:30 pmDenver Intl

32h 25m

1 stop

LIS8:55 amLisbon Humberto Delgado

Jan 13

LIS11:20 amLisbon Humberto Delgado

36h 10m

2 stops

DEN4:30 pmDenver Intl

$571

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 1/20

4:20 pm-3:15 pm

1 stop15h 55m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$507

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 2/25

10:20 am-8:10 am

1 stop14h 50m

Lisbon Humberto Delgado

Wed 3/11

5:00 am-5:00 pm

1 stop18h 00m

$530

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/11

9:59 am-8:10 am

1 stop15h 11m

Lisbon Humberto Delgado

Tue 1/27

10:15 am-5:58 pm

1 stop14h 43m

$537

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 2/9

4:20 pm-3:15 pm

1 stop15h 55m

Lisbon Humberto Delgado

Thu 2/19

5:00 am-4:40 pm

2 stops18h 40m

$539

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 2/9

1:25 pm-2:35 pm

2 stops18h 10m

Lisbon Humberto Delgado

Thu 2/19

5:00 am-4:40 pm

2 stops18h 40m

$544

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 2/9

4:20 pm-11:30 pm

1 stop24h 10m

Lisbon Humberto Delgado

Thu 2/19

5:00 am-4:00 pm

1 stop18h 00m

$547

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 2/25

1:25 pm-9:20 am

1 stop12h 55m

Lisbon Humberto Delgado

Wed 3/11

6:10 am-5:00 pm

2 stops16h 50m

$549

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 1/19

1:25 pm-9:20 am

1 stop12h 55m

Lisbon Humberto Delgado

Mon 1/26

2:10 pm-2:35 pm

1 stop31h 25m

$551

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 1/13

11:15 am-9:20 am

1 stop15h 05m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$552

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 1/12

12:49 pm-8:10 am

1 stop12h 21m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$553

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 Lisbon

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

Layovers

What is the cheapest month to fly to Lisbon?

In general, November is the cheapest month to fly from Denver to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $662. If you are unable to visit Lisbon during the month of November, then departing from Denver during the month February is also very affordable. Most momondo users find prices during this month for around $707.

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

Our data shows that Wednesday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $950. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Lisbon for around $1,154.

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

The cheapest time of day to fly to Lisbon is in the morning when flights can be purchased for as low as $995. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,110 on average. Flights to Lisbon from Denver at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Lisbon from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $936 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Denver for as low as $824 on momondo.

How have Denver to Lisbon flight prices changed over time?

As of December 2025, prices for Denver to Lisbon flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Denver to Lisbon (DEN to LIS) flight deals and tips

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

Fastest flight time	12h 55m
Direct flights	None

The fastest flight from Denver to Lisbon takes 12h 55m

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

Search flight deals

How far is Denver Intl to Lisbon Humberto Delgado by plane?
The distance between Denver Intl and Lisbon Humberto Delgado is about 4847.0 mi. Flights usually cover this in 12h 55m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?
As of December 2025, there are 13 operators available to choose from for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Denver Intl Airport to Lisbon Humberto Delgado Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport 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 Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Denver to Lisbon?
Based on momondo bookings for flights between Denver and Lisbon, the leading airline is United Airlines, making up 46% of the total bookings. Other popular airlines include British Airways with 12%, Lufthansa with 12%, and Air Canada with 7%.

Best airlines flying from Denver to Lisbon

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $458	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $539	Free Cancellation	Rating 7.5 677 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $551	Free Cancellation	Rating 7.9 8,015 reviews	Search Delta flights
British Airways	PriceFrom $556	Free Cancellation	Rating 6.7 7,607 reviews	Search British Airways flights
Lufthansa	PriceFrom $565	Free Cancellation	Rating 6.8 7,650 reviews	Search Lufthansa flights
Air France	PriceFrom $569	Free Cancellation	Rating 7.4 1,513 reviews	Search Air France flights
KLM	PriceFrom $575	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
Turkish Airlines	PriceFrom $586	Free Cancellation	Rating 7.3 4,112 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $591	Free Cancellation	Rating 7.4 9,109 reviews	Search United Airlines flights
American Airlines	PriceFrom $594	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights

Sintra

Ericeira

Fátima

Nazaré

Setúbal

Peniche

Estoril

Leiria

Oeiras

Sesimbra

Tomar

Evora

Figueira da Foz

Zambujeira do Mar

Batalha

Comporta

Torres Vedras

Óbidos

Sines

Almada

Why use momondo?

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

Finding the right flight to Lisbon from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Lisbon quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Lisbon from Denver which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Lisbon from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Denver to Lisbon flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Lisbon 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

Find my bookings

Get notified when prices go down

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

1 adult

Thu 1/22

Thu 1/29

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Airports servicing Portugal

Cheap flights from Denver to Lisbon 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 Lisbon departing on 1/14. 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 Lisbon

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

British Airways flights from Denver to Lisbon

Our best British Airways deals on Denver to Lisbon flight tickets

Air Canada flights from Denver to Lisbon

Our best Air Canada deals on Denver to Lisbon flight tickets

momondo Fare Finder

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

See travel insights to Lisbon from

How to get the cheapest flight ticket from Denver to Lisbon

What is the cheapest month to fly to Lisbon?

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

Our data shows that Wednesday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $950. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Lisbon for around $1,154.

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

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

How have Denver to Lisbon flight prices changed over time?

As of December 2025, prices for Denver to Lisbon flights are approximately 34% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Denver Intl to Lisbon Humberto Delgado?

Icelandair and British Airways are the most popular carriers operating from Denver Intl to Lisbon Humberto Delgado

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Denver and Lisbon?

Munich (MUC) was the most common stop: 18% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Denver to Lisbon?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $601.

Which layover airport has the shortest travel time from Denver to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 11h 22m.

Which layover airport has the shortest connection time from Denver to Lisbon?

Munich (MUC) has the shortest average layover time for this route: 1h 15m.

When to book flights from Denver to Lisbon

Cheap Denver to Lisbon (DEN to LIS) flight deals and tips

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

Fastest flight time

Direct flights

How far is Denver Intl to Lisbon Humberto Delgado by plane?

When did momondo last update prices for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?

How many operators does momondo search for flights from Denver Intl Airport to Lisbon Humberto Delgado Airport?

How old do you have to be to fly from Denver Intl Airport to Lisbon Humberto Delgado Airport?

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

What is the most popular airline from Denver to Lisbon?

Best airlines flying from Denver to Lisbon

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

Traveling to a place near Lisbon?

Why use momondo?

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

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

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

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

An easier way to manage your Lisbon 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

Airports servicing Portugal