What are the cheapest airlines flying from Denver to Lisbon round-trip?

According to our current data, Aer Lingus ($835), Turkish Airlines ($849), and Air Canada ($880) offers the cheapest pricing from Denver to Lisbon. Users have found that Aer Lingus is 15% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Denver to Lisbon one-way?

The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $419. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from Denver to Lisbon for a low price.

What are the most popular airlines that fly from Denver to Lisbon?

Before booking your flight from Denver to Lisbon check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

Where are the most common layover locations when flying from Denver to Lisbon?

Denver to Lisbon flights have a layover in London most of the time. Washington, D.C. is the second most popular location for layovers on flights from Denver to Lisbon.

Where are the least popular layover locations for Denver to Lisbon flights?

The least popular layover on flights from Denver to Lisbon is New York. Munich sees the next fewest layovers on Denver to Lisbon flights.

What are some popular things to do or see while on a layover in London?

Most London visitors opt to spend their time experiencing Hyde Park, Buckingham Palace, and Piccadilly Circus. Those on a layover in London interested in visiting Hyde Park, Buckingham Palace, or Piccadilly Circus can do so by traveling 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Travelers can book a car rental at London Heathrow for about $44 per day to make their sightseeing more efficient.

What are some popular points of interest to see during a layover in Washington, D.C.?

The majority of Washington, D.C. visitors spend their time at White House, National Mall, and U.S. Capitol. White House, National Mall, and U.S. Capitol can be visited by traveling about 22.4 mi, 23.3 mi, and 24.0 mi respectively from Washington, D.C. Dulles Intl. Travelers in need of a car in Washington, D.C. can rent one for about $60 per day.

What is the cheapest day to fly round-trip from Denver to Lisbon?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Lisbon. Check prices with Cheapflights to find a great deal for your trip.

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

Travelers have found it’s best to book a flight 19 days in advance to save up to 30% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 19 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Denver to Lisbon 1-2 weeks in advance for as low as $821, or $1,189 for flights within the next 24 hours.

What is the cheapest month to fly from Denver to Lisbon?

January is one of the best times of the year to fly to Lisbon from Denver. Prices for January average $988 per person but you can even find prices for as low as $555. The most expensive prices can be found in the month of June. Opting for a January flight can save you 42% on your journey compared to booking in June

Can I find deals for flights from Denver to Lisbon that include hotel bookings?

Yes. In addition to deals on Denver to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Denver to Lisbon?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Lisbon.

Can I find deals for business class flights from Denver to Lisbon?

Yes. Cheapflights offers flight deals from Denver to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$272+ Flights from Denver to Lisbon

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Denver Intl to Lisbon Humberto Delgado are usually found in January or February, booked 62 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from Denver to Lisbon

Round-trip from	$830 (Mytrip)
One-way from	$272 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$1,411

From Denver Intl to Lisbon Humberto Delgado

Search Deals

One-way flight from Denver Intl to Lisbon Humberto Delgado

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($193 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

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Find flight deals from Denver to Lisbon

Cheapest flights from Denver to Lisbon
Explore the most affordable flight options available from Denver to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Sun 8/314:40 pmDEN - LIS

2 stops22h 20mMultiple Airlines

Sat 9/69:55 pmLIS - DEN

2 stops28h 00mMultiple Airlines

Deal found 6/10

$830

Sat 9/2011:59 pmDEN - LIS

1 stop27h 31mUnited Airlines

Sat 10/46:15 amLIS - DEN

1 stop15h 05mUnited Airlines

Deal found 6/11

$831

Mon 9/87:55 pmDEN - LIS

1 stop18h 40mAer Lingus

Tue 9/3010:15 pmLIS - DEN

1 stop26h 44mAer Lingus

Deal found 6/11

$841

Wed 7/97:50 pmDEN - LIS

1 stop36h 40mTurkish Airlines

Wed 7/165:55 amLIS - DEN

1 stop19h 00mTurkish Airlines

Deal found 6/11

$849

Thu 9/2512:45 pmDEN - LIS

2 stops19h 05mDelta

Tue 9/309:50 amLIS - DEN

2 stops19h 56mDelta

Deal found 6/11

$853

Mon 9/226:00 pmDEN - LIS

2 stops21h 05mLufthansa

Sat 10/45:05 amLIS - DEN

2 stops21h 23mLufthansa

Deal found 6/12

$857

Sat 11/1512:59 pmDEN - LIS

2 stops44h 06mScandinavian Airlines

Thu 11/201:00 pmLIS - DEN

2 stops41h 47mScandinavian Airlines

Deal found 6/12

$862

Fri 10/37:45 amDEN - LIS

2 stops17h 35mAir Canada

Mon 10/137:30 amLIS - DEN

2 stops19h 24mAir Canada

Deal found 6/11

$876

Sat 8/24:40 pmDEN - LIS

1 stop21h 40mIcelandair

Sun 8/1010:20 pmLIS - DEN

1 stop27h 35mIcelandair

Deal found 6/12

$894

Fri 8/85:50 pmDEN - LIS

1 stop13h 55mSWISS

Sun 8/245:55 amLIS - DEN

2 stops40h 44mSWISS

Deal found 6/11

$900

Wed 8/2712:11 pmDEN - LIS

1 stop12h 49mKLM

Tue 9/3010:00 amLIS - DEN

1 stop15h 22mKLM

Deal found 6/10

$925

Thu 11/205:30 pmDEN - LIS

1 stop14h 15mBritish Airways

Sat 11/2912:55 pmLIS - DEN

1 stop33h 30mBritish Airways

Deal found 6/11

$952

Best flights from Denver to Lisbon
Discover carefully curated flight deals from Denver to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Sun 8/314:40 pmDEN - LIS

2 stops22h 20mMultiple Airlines

Sat 9/69:55 pmLIS - DEN

2 stops28h 00mMultiple Airlines

Deal found 6/10

$830

Sat 9/67:55 pmDEN - LIS

1 stop18h 40mAer Lingus

Wed 9/2410:15 pmLIS - DEN

2 stops32h 10mAer Lingus

Deal found 6/12

$835

Wed 7/97:50 pmDEN - LIS

1 stop36h 40mTurkish Airlines

Wed 7/165:55 amLIS - DEN

1 stop19h 00mTurkish Airlines

Deal found 6/11

$849

Tue 7/85:40 pmDEN - LIS

1 stop32h 40mAir Canada

Thu 7/1711:25 amLIS - DEN

1 stop13h 55mAir Canada

Deal found 6/10

$880

Tue 8/1211:29 amDEN - LIS

2 stops20h 21mDelta

Tue 8/1910:00 amLIS - DEN

2 stops19h 48mDelta

Deal found 6/11

$887

Sat 8/24:40 pmDEN - LIS

1 stop21h 40mIcelandair

Sun 8/1010:20 pmLIS - DEN

1 stop27h 35mIcelandair

Deal found 6/12

$894

Fri 8/85:50 pmDEN - LIS

1 stop13h 55mSWISS

Sun 8/245:55 amLIS - DEN

2 stops40h 44mSWISS

Deal found 6/11

$900

Tue 9/29:40 amDEN - LIS

1 stop16h 40mUnited Airlines

Fri 10/107:30 amLIS - DEN

1 stop15h 05mUnited Airlines

Deal found 6/12

$907

Wed 8/2712:11 pmDEN - LIS

1 stop12h 49mKLM

Tue 9/3010:00 amLIS - DEN

1 stop15h 22mKLM

Deal found 6/10

$925

Mon 9/84:15 pmDEN - LIS

1 stop14h 20mLufthansa

Mon 9/222:25 pmLIS - DEN

1 stop30h 20mLufthansa

Deal found 6/11

$950

Mon 9/812:41 pmDEN - LIS

2 stops27h 29mFinnair

Sat 9/276:35 amLIS - DEN

2 stops20h 25mFinnair

Deal found 6/11

$991

Fri 7/1111:35 amDEN - LIS

1 stop14h 30mAmerican Airlines

Thu 7/1711:05 amLIS - DEN

2 stops18h 49mAmerican Airlines

Deal found 6/10

$995

Last-minute flights from Denver to Lisbon
Discover last-minute flight deals from Denver to Lisbon. Data last updated June 12, 2025 and is based on user searches.

Tue 6/177:45 amDEN - LIS

2 stops15h 45mMultiple Airlines

Wed 6/259:35 amLIS - DEN

3 stops30h 44mMultiple Airlines

Deal found 6/10

$1,146

Tue 6/1712:24 pmDEN - LIS

2 stops23h 51mAir Europa

Fri 6/207:40 amLIS - DEN

2 stops22h 06mAir Europa

Deal found 6/10

$1,735

Wed 6/187:45 amDEN - LIS

2 stops18h 35mAir Canada

Mon 6/2311:25 amLIS - DEN

2 stops29h 55mAir Canada

Deal found 6/11

$1,259

Wed 6/186:35 pmDEN - LIS

1 stop16h 20mBritish Airways

Mon 6/236:45 pmLIS - DEN

1 stop28h 40mBritish Airways

Deal found 6/10

$2,190

Wed 6/185:50 pmDEN - LIS

1 stop13h 55mSWISS

Wed 7/25:55 amLIS - DEN

1 stop17h 25mSWISS

Deal found 6/10

$4,712

Thu 6/1912:24 pmDEN - LIS

1 stop12h 36mDelta

Sun 6/229:55 amLIS - DEN

1 stop19h 51mDelta

Deal found 6/10

$2,284

Fri 6/207:50 pmDEN - LIS

1 stop31h 05mTurkish Airlines

Thu 7/174:45 pmLIS - DEN

1 stop32h 10mTurkish Airlines

Deal found 6/10

$1,454

Fri 6/2012:22 pmDEN - LIS

2 stops26h 13mAer Lingus

Thu 7/1711:25 amLIS - DEN

2 stops27h 57mAer Lingus

Deal found 6/10

$1,626

Sat 6/218:10 pmDEN - LIS

1 stop17h 45mIcelandair

Thu 7/310:20 pmLIS - DEN

1 stop21h 10mIcelandair

Deal found 6/11

$1,365

Sat 6/211:33 pmDEN - LIS

2 stops60h 07mTAP AIR PORTUGAL

Thu 7/310:00 pmLIS - DEN

2 stops41h 17mTAP AIR PORTUGAL

Deal found 6/10

$1,389

Tue 7/87:45 amDEN - LIS

2 stops30h 50mMultiple Airlines

Thu 7/179:25 amLIS - DEN

2 stops35h 20mMultiple Airlines

Deal found 6/10

$833

Tue 7/85:40 pmDEN - LIS

1 stop32h 40mAir Canada

Thu 7/1711:25 amLIS - DEN

1 stop13h 55mAir Canada

Deal found 6/10

$880

One-way flights from Denver to Lisbon
Search for one-way flight options from Denver to Lisbon. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Tue 7/812:34 amDEN - LIS

1 stop33h 41mMultiple Airlines

Deal found 6/10

$272

Wed 7/304:40 pmDEN - LIS

1 stop21h 40mIcelandair

Deal found 6/10

$419

Fri 9/57:55 pmDEN - LIS

1 stop18h 40mAer Lingus

Deal found 6/10

$546

Wed 7/306:35 pmDEN - LIS

1 stop21h 35mBritish Airways

Deal found 6/11

$573

Tue 7/15:59 pmDEN - LIS

1 stop14h 26mLufthansa

Deal found 6/10

$574

Mon 6/305:40 pmDEN - LIS

1 stop32h 40mAir Canada

Deal found 6/10

$578

Tue 7/112:24 pmDEN - LIS

1 stop12h 36mKLM

Deal found 6/10

$583

Sat 7/196:00 amDEN - LIS

2 stops19h 00mDelta

Deal found 6/12

$643

Sat 6/2111:54 pmDEN - LIS

2 stops34h 46mRoyal Air Maroc

Deal found 6/10

$1,004

Sat 8/912:15 pmDEN - LIS

2 stops19h 35mWestJet

Deal found 6/11

$1,039

Tue 6/171:50 pmDEN - LIS

1 stop14h 00mTAP AIR PORTUGAL

Deal found 6/11

$1,120

Tue 7/11:25 pmDEN - LIS

2 stops18h 20mSWISS

Deal found 6/12

$1,439

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 8/31

4:40 pm-10:00 pm

2 stops22h 20m

Lisbon Humberto Delgado

Sat 9/6

9:55 pm-6:55 pm

2 stops28h 00m

$830

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 9/20

11:59 pm-10:30 am

1 stop27h 31m

Lisbon Humberto Delgado

Sat 10/4

6:15 am-2:20 pm

1 stop15h 05m

$831

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 9/8

7:55 pm-9:35 pm

1 stop18h 40m

Lisbon Humberto Delgado

Tue 9/30

10:15 pm-5:59 pm

1 stop26h 44m

$841

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 7/9

7:50 pm-3:30 pm

1 stop36h 40m

Lisbon Humberto Delgado

Wed 7/16

5:55 am-5:55 pm

1 stop19h 00m

$849

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 9/25

12:45 pm-2:50 pm

2 stops19h 05m

Lisbon Humberto Delgado

Tue 9/30

9:50 am-10:46 pm

2 stops19h 56m

$853

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 9/22

6:00 pm-10:05 pm

2 stops21h 05m

Lisbon Humberto Delgado

Sat 10/4

5:05 am-7:28 pm

2 stops21h 23m

$857

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 11/15

12:59 pm-4:05 pm

2 stops44h 06m

Lisbon Humberto Delgado

Thu 11/20

1:00 pm-11:47 pm

2 stops41h 47m

$862

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Fri 10/3

7:45 am-8:20 am

2 stops17h 35m

Lisbon Humberto Delgado

Mon 10/13

7:30 am-7:54 pm

2 stops19h 24m

$876

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 8/2

4:40 pm-9:20 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sun 8/10

10:20 pm-6:55 pm

1 stop27h 35m

$894

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Fri 8/8

5:50 pm-2:45 pm

1 stop13h 55m

Lisbon Humberto Delgado

Sun 8/24

5:55 am-3:39 pm

2 stops40h 44m

$900

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 30 results

Best time to book a flight from Denver to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Denver with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Lisbon

How far ahead should I book a flight from Denver to Lisbon?

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Denver to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Denver to Lisbon (average of $612). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to LIS?

It’s optimal to fly from Denver to Lisbon in the morning. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Denver to Lisbon?

Travelers seeking maximum savings on their Denver to Lisbon flight should consider departing on Sunday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Lisbon

See what other customers who have flown with Delta, KLM and Finnair from Denver to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,463 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,623 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Denver to Lisbon round-trip?
According to our current data, Aer Lingus ($835), Turkish Airlines ($849), and Air Canada ($880) offers the cheapest pricing from Denver to Lisbon. Users have found that Aer Lingus is 15% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Denver to Lisbon one-way?
The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $419. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from Denver to Lisbon for a low price.
Where are the most common layover locations when flying from Denver to Lisbon?
Denver to Lisbon flights have a layover in London most of the time. Washington, D.C. is the second most popular location for layovers on flights from Denver to Lisbon.
What are some popular things to do or see while on a layover in London?
Most London visitors opt to spend their time experiencing Hyde Park, Buckingham Palace, and Piccadilly Circus. Those on a layover in London interested in visiting Hyde Park, Buckingham Palace, or Piccadilly Circus can do so by traveling 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Travelers can book a car rental at London Heathrow for about $44 per day to make their sightseeing more efficient.
What are some popular points of interest to see during a layover in Washington, D.C.?
The majority of Washington, D.C. visitors spend their time at White House, National Mall, and U.S. Capitol. White House, National Mall, and U.S. Capitol can be visited by traveling about 22.4 mi, 23.3 mi, and 24.0 mi respectively from Washington, D.C. Dulles Intl. Travelers in need of a car in Washington, D.C. can rent one for about $60 per day.
Where are the least popular layover locations for Denver to Lisbon flights?
The least popular layover on flights from Denver to Lisbon is New York. Munich sees the next fewest layovers on Denver to Lisbon flights.
Can I find deals for flights from Denver to Lisbon that include hotel bookings?
Yes. In addition to deals on Denver to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Denver to Lisbon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Lisbon.
Can I find deals for business class flights from Denver to Lisbon?
Yes. Cheapflights offers flight deals from Denver to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Denver to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Denver to Lisbon (average of $612). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Beja

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Ericeira

Costa da Caparica

Evora

Torres Vedras

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Sesimbra

Fátima

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Alternative routes for Denver to Lisbon

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Other flights to Lisbon

Top 10 airlines flying from Denver to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$458	Average$662	FlexibilityNo cancel fee	On-time76%
Virgin Atlantic	Cheapest$539	Average$1,177	FlexibilityNo cancel fee	On-time72%
Delta	Cheapest$551	Average$924	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$553	Average$850	FlexibilityNo cancel fee	On-time70%
Turkish Airlines	Cheapest$555	Average$694	FlexibilityNo cancel fee	On-time77%
Air France	Cheapest$569	Average$904	FlexibilityNo cancel fee	On-time77%
KLM	Cheapest$599	Average$776	FlexibilityNo cancel fee	On-time75%
Lufthansa	Cheapest$619	Average$914	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$627	Average$951	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$652	Average$1,163	FlexibilityNo cancel fee	On-time71%

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$272+ Cheap flights from Denver (DEN) to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Denver Intl to Lisbon Humberto Delgado are usually found in January or February, booked 62 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from Denver to Lisbon

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Denver to Lisbon

Cheapest flights from Denver to LisbonExplore the most affordable flight options available from Denver to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Denver to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Denver to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Denver with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Denver to Lisbon

How far ahead should I book a flight from Denver to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Lisbon. Price data was last updated on June 9, 2025.

What is the cheapest month to book a flight from Denver to Lisbon?

What is the cheapest time of day to fly from DEN to LIS?

Find hourly flight availability from Denver to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

What is the cheapest day to fly from Denver to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Denver to Lisbon. Price data was last updated on December 16, 2024.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated June 12, 2025.

See what other customers who have flown with Delta, KLM and Finnair from Denver to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Denver to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Denver to Lisbon round-trip?

What are the cheapest airlines to fly from Denver to Lisbon one-way?

Where are the most common layover locations when flying from Denver to Lisbon?

What are some popular things to do or see while on a layover in London?

What are some popular points of interest to see during a layover in Washington, D.C.?

Where are the least popular layover locations for Denver to Lisbon flights?

Can I find deals for flights from Denver to Lisbon that include hotel bookings?

How can I find direct flights from Denver to Lisbon?

Can I find deals for business class flights from Denver to Lisbon?

What is the cheapest month to book a flight from Denver to Lisbon?

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Alternative routes for Denver to Lisbon

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Top 10 airlines flying from Denver to Lisbon

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Cheapest flights from Denver to Lisbon
Explore the most affordable flight options available from Denver to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.