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$352 Cheap Flights from Denver (DEN) to Lisbon (LIS)

View $352 flight on Wed, May 5, 2027Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)

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Cheap Flights from Denver to Lisbon (DEN-LIS)

Prices were available within the past 7 days and start at $352 for one-way flights and $560 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sat, Feb 13 - Tue, Feb 23
DEN
Denver
LIS
Lisbon
$560 Roundtrip, found 12 hours ago
$560
Roundtrip
found 12 hours ago
Select Icelandair flight, departing Sat, Feb 13 from Denver to Lisbon, returning Tue, Feb 23, priced at $560 found 12 hours ago
Icelandair
Mon, Nov 2 - Tue, Nov 10
DEN
Denver
LIS
Lisbon
$562 Roundtrip, just found
$562
Roundtrip
just found
Select Icelandair flight, departing Mon, Nov 2 from Denver to Lisbon, returning Tue, Nov 10, priced at $562 just found
American Airlines
Tue, Nov 10 - Wed, Nov 18
DEN
Denver
LIS
Lisbon
$582 Roundtrip, found 6 hours ago
$582
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Nov 10 from Denver to Lisbon, returning Wed, Nov 18, priced at $582 found 6 hours ago
United
Wed, Oct 28 - Thu, Nov 26
DEN
Denver
LIS
Lisbon
$588 Roundtrip, found 3 days ago
$588
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 28 from Denver to Lisbon, returning Thu, Nov 26, priced at $588 found 3 days ago
British Airways
Mon, Dec 7 - Thu, Dec 17
DEN
Denver
LIS
Lisbon
$589 Roundtrip, found 3 days ago
$589
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Dec 7 from Denver to Lisbon, returning Thu, Dec 17, priced at $589 found 3 days ago
Virgin Atlantic
Tue, Dec 1 - Tue, Dec 8
DEN
Denver
LIS
Lisbon
$595 Roundtrip, found 1 hour ago
$595
Roundtrip
found 1 hour ago
Select Virgin Atlantic flight, departing Tue, Dec 1 from Denver to Lisbon, returning Tue, Dec 8, priced at $595 found 1 hour ago
Delta
Tue, Dec 1 - Tue, Dec 8
DEN
Denver
LIS
Lisbon
$595 Roundtrip, found 1 hour ago
$595
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Dec 1 from Denver to Lisbon, returning Tue, Dec 8, priced at $595 found 1 hour ago
Iberia
Wed, Nov 4 - Wed, Nov 11
DEN
Denver
LIS
Lisbon
$597 Roundtrip, found 2 days ago
$597
Roundtrip
found 2 days ago
Select Iberia flight, departing Wed, Nov 4 from Denver to Lisbon, returning Wed, Nov 11, priced at $597 found 2 days ago
Finnair
Tue, Nov 3 - Wed, Nov 11
DEN
Denver
LIS
Lisbon
$598 Roundtrip, found 10 hours ago
$598
Roundtrip
found 10 hours ago
Select Finnair flight, departing Tue, Nov 3 from Denver to Lisbon, returning Wed, Nov 11, priced at $598 found 10 hours ago
Lufthansa
Mon, Oct 26 - Thu, Nov 5
DEN
Denver
LIS
Lisbon
$610 Roundtrip, found 5 hours ago
$610
Roundtrip
found 5 hours ago
Select Lufthansa flight, departing Mon, Oct 26 from Denver to Lisbon, returning Thu, Nov 5, priced at $610 found 5 hours ago

Alternative airports near Lisbon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Humberto Delgado LIS. Cheapest option available. Flights from $1,431
LIS
Humberto Delgado
Cheapest
Flights from $1,431

Find the cheapest month to fly from Denver (DEN) to Lisbon (LIS)

November is typically the cheapest month to fly

From $711 - $2,228 per traveler.

What you need to know for your flight from Denver Intl. to Humberto Delgado

Denver (DEN) to Lisbon (LIS) at a glance

Explore an array of airlines offering flights from Denver (DEN) to Lisbon (LIS) on this international long-haul route. Compare various full-service carriers to find the perfect itinerary that aligns with your travel budget, schedule, and plans as you discover the iconic sights and neighborhoods of Lisbon. Here, you’ll find essential information for flights departing from Denver International Airport (DEN) to Humberto Delgado Airport (LIS).

  • Fastest flight duration: around 10h 45m in-flight, plus roughly 2h 15m layover with one stop
  • Route distance: roughly 4,800 miles (7,720 km)
  • Flights per week: around 11 departures on average
  • Typical fares (one-way): economy tickets often range from $285–$925, depending on seasonality and how far ahead you book

Flights from Denver International Airport (DEN) to Humberto Delgado Airport (LIS)

According to recent traveler bookings, the top airlines flying from Denver to Lisbon are favored for their one-stop and multi-stop flights, often featuring popular layovers at Heathrow Airport (LHR, approximately 2 hours 15 minutes), Washington Dulles International Airport (IAD, about 1 hour 15 minutes), and Newark Liberty International Airport (EWR, roughly 2 hours). These options allow you to customize your journey by balancing price, total travel time, and cabin class to secure the best itinerary.

  • United: As a comprehensive service airline, United offers one-stop flights with one-way prices generally falling between $285 and $925. This carrier handles roughly 45% of the departures on this route, featuring an in-flight duration of 10 hours and 45 minutes, totaling about 14 hours of travel time including layovers.
  • British Airways: With its one-stop service, British Airways provides a full-service experience, with one-way fares typically ranging from $285 to $790. This airline represents around 12% of the departures on this route, maintaining an in-flight time of 10 hours and 45 minutes and an overall journey duration of about 14 hours, including layovers.
  • Air Canada: Offering a full-service experience with one-stop flights, Air Canada has one-way fares that usually range from $285 to $1010. It accounts for approximately 7% of departures on this route, featuring an in-flight time of 10 hours and 45 minutes, leading to a total travel time of around 14 hours, inclusive of layovers.
  • American Airlines: This full-service carrier provides one-stop service with one-way fares generally between $350 and $900. American Airlines comprises about 6% of the departures on this route, with a flight duration of 10 hours and 45 minutes and an estimated total journey time of roughly 14 hours, including layover periods.
  • Virgin Atlantic: As a full-service airline offering one-stop flights, Virgin Atlantic's one-way fares are typically priced between $330 and $650. This carrier makes up around 5% of the departures on this route, with an in-flight time of 10 hours and 45 minutes and a total travel time of approximately 14 hours, factoring in layovers.

Best time to fly from Denver (DEN) to Lisbon (LIS)

The most popular months for travelers flying from Denver to Lisbon are March, April, and May, when peak temperatures in Lisbon reach up to 64.8°F in May. If you prefer quieter travel, consider November, the least busy time to visit with temperatures around 59.9°F and typically the lowest average one-way fare (around $358). Flight availability peaks in June, with approximately 14 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $358, roughly 32% cheaper than the yearly average.
  • Another budget-friendly time to fly: February typically offers an average one-way fare of around $369.
  • Most flight options: June has the highest number of flights from Denver to Lisbon, with approximately 14 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January54.0°F (12.2°C)Low7$429
February54.5°F (12.5°C)Low8$369
March57.0°F (13.9°C)High11$504
April59.9°F (15.5°C)High9$496
May64.8°F (18.2°C)High12$673
June68.2°F (20.1°C)Average14$733
July71.1°F (21.7°C)Average13$593
August72.0°F (22.2°C)Average11$592
September70.3°F (21.3°C)Average13$648
October66.9°F (19.4°C)Average12$486
November59.9°F (15.5°C)Low10$358
December55.9°F (13.3°C)Average8$511

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Denver (DEN) to Lisbon (LIS)

  • Denver to Cascais (DEN-CAT): Located approximately 12 miles from Humberto Delgado Airport (LIS), Cascais Airport (CAT) offers convenient access to the region.
  • Fort Collins to Lisbon (FNL-LIS): Fort Collins-Loveland Municipal Airport (FNL) is around 45 miles distant from Denver International Airport (DEN), providing an accessible travel option.
  • Colorado Springs to Lisbon (COS-LIS): Situated about 73 miles from Denver International Airport (DEN), Colorado Springs Airport (COS) serves as a viable departure point.

How to find the best prices for flights from Denver (DEN) to Lisbon (LIS)

Getting some of the best deals on flights from Denver to Lisbon is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking within two weeks, although most travelers book at least two months in advance. Morning departures between 5 am and 12 pm tend to offer lower prices, while afternoon flights from 12 pm to 6 pm are more popular. Additionally, flying on Tuesday usually provides cheaper rates, but Wednesday is the most common travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Lisbon hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Humberto Delgado Airport from Denver International Airport

Lisbon welcomes travelers from Denver with a range of transport options based on price, convenience, and proximity. Here's how to reach Lisbon efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Lisbon, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Humberto Delgado Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Humberto Delgado Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Humberto Delgado Airport, Lisbon Airport Station (a metro station) is located about 0.1 miles away on foot, while Oriente Bus Station (a bus station) and Roma-Areeiro Station (a train station) are both about 1.8 miles away by car, providing convenient access to various transport options for travelers.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) cost?
You can find cheap one-way flights from $352 and cheap return flights from $560 Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) with Expedia. One-way flights generally range between $458 and $4746, and roundtrip flights usually range from $729 to $5243. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
The cheapest month to fly from DEN to LIS is February when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
Enter DEN to LIS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
WestJet is one of the cheapest airlines offering connecting flights from Denver, CO (DEN) to Lisbon (LIS), with round-trip tickets starting from around $1,439 with a layover in Calgary Intl. (YYC). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
The earliest flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) typically departs at around 12:20 AM local time, operated by American Airlines. This is a seasonal service active in March, giving you the chance to maximize your time in Lisbon. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
For flights from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado), the most popular departure times are from 9am to 12pm. This time window accounts for around 26% of total traffic. Many major carriers, including United Airlines, Air Canada, and Delta Airlines, offer flights during this period. This timing works well for travelers looking to maximize their time in Lisbon upon arrival.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
A flight from DEN to LIS with a layover takes around 13 hours 50 minutes, with the route covering approximately 4,831 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
Business class is available on flights from DEN to LIS. Airlines that offer business class service on this route include:

  • Lufthansa
  • British Airways
  • United Airlines
  • Air Canada
  • Air France
  • Delta Air Lines
  • American Airlines
  • Turkish Airlines
  • Icelandair
  • Edelweiss Air

First class is available with United Airlines and Lufthansa.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Lisbon from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Humberto Delgado (LIS) to reach Lisbon. Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Lisbon. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) Lisbon Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado)?
If you booked your Denver, CO (DEN-Denver Intl.) to Lisbon (LIS-Humberto Delgado) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air Europa, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$559
Distance
4830 mi

Book with confidence

Denver to Lisbon Flights

The cheapest times to fly from Denver to Lisbon

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Lisbon are during the month of February. You can find some of the cheapest flights from Denver to Lisbon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Lisbon

Sunday is one of the best days to book for cheap flights from Denver to Lisbon: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Lisbon

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Lisbon in 2026. You can also book with separate airlines for your outbound and return journeys, from $352 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Lisbon flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Lisbon airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Lisbon Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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