$628 Cheap Flights from Lisbon (LIS) to Denver (DEN)

View $628 flight on Fri, Oct 30, 2026Opens in a new window

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

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Cheap Flights from Lisbon to Denver (LIS-DEN)

Prices were available within the past 7 days and start at $628 for one-way flights and $891 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Fri, Jun 5 - Sat, Jun 20
LIS
Lisbon
DEN
Denver
$891 Roundtrip, found 5 days ago
$891
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Fri, Jun 5 from Lisbon to Denver, returning Sat, Jun 20, priced at $891 found 5 days ago
Aer Lingus
Sat, Jun 6 - Mon, Jun 22
LIS
Lisbon
DEN
Denver
$968 Roundtrip, found 3 days ago
$968
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Sat, Jun 6 from Lisbon to Denver, returning Mon, Jun 22, priced at $968 found 3 days ago
Lufthansa
Thu, Nov 12 - Tue, Nov 17
LIS
Lisbon
DEN
Denver
$994 Roundtrip, found 4 days ago
$994
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Thu, Nov 12 from Lisbon to Denver, returning Tue, Nov 17, priced at $994 found 4 days ago
United
Wed, Sep 23 - Sun, Sep 27
LIS
Lisbon
DEN
Denver
$995 Roundtrip, found 1 day ago
$995
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 23 from Lisbon to Denver, returning Sun, Sep 27, priced at $995 found 1 day ago
Lufthansa
Thu, Oct 29 - Wed, Nov 4
LIS
Lisbon
DEN
Denver
$995 Roundtrip, found 4 hours ago
$995
Roundtrip
found 4 hours ago
Select Lufthansa flight, departing Thu, Oct 29 from Lisbon to Denver, returning Wed, Nov 4, priced at $995 found 4 hours ago
Icelandair
Thu, Oct 29 - Wed, Nov 4
LIS
Lisbon
DEN
Denver
$998 Roundtrip, found 4 hours ago
$998
Roundtrip
found 4 hours ago
Select Icelandair flight, departing Thu, Oct 29 from Lisbon to Denver, returning Wed, Nov 4, priced at $998 found 4 hours ago
Air Canada
Thu, Nov 12 - Tue, Nov 17
LIS
Lisbon
DEN
Denver
$1,002 Roundtrip, found 4 days ago
$1,002
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 12 from Lisbon to Denver, returning Tue, Nov 17, priced at $1,002 found 4 days ago
British Airways
Thu, Oct 29 - Wed, Nov 4
LIS
Lisbon
DEN
Denver
$1,009 Roundtrip, found 4 hours ago
$1,009
Roundtrip
found 4 hours ago
Select British Airways flight, departing Thu, Oct 29 from Lisbon to Denver, returning Wed, Nov 4, priced at $1,009 found 4 hours ago
Brussels Airlines
Wed, Oct 14 - Wed, Oct 21
LIS
Lisbon
DEN
Denver
$1,030 Roundtrip, found 5 days ago
$1,030
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Wed, Oct 14 from Lisbon to Denver, returning Wed, Oct 21, priced at $1,030 found 5 days ago
American Airlines
Wed, Oct 28 - Mon, Nov 9
LIS
Lisbon
DEN
Denver
$1,031 Roundtrip, found 2 days ago
$1,031
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Oct 28 from Lisbon to Denver, returning Mon, Nov 9, priced at $1,031 found 2 days ago

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $1,122
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $1,122

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

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

Explore a range of airlines providing flights from Lisbon (LIS) to Denver (DEN) on this international long-haul journey. You can compare various full-service carriers to find the itinerary that best suits your budget, schedule, and travel plans while discovering Denver's iconic attractions and neighborhoods. Check out the essential details for flights departing from Humberto Delgado Airport (LIS) to Denver International Airport (DEN).

  • Fastest flight duration: around 12h 30m in-flight, plus roughly 2h 15m layover with one stop
  • Route distance: roughly 4,800 miles (7,720 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $525–$1220, depending on seasonality and how far ahead you book

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

Based on the latest travel bookings, here are the top airlines preferred for flights from Lisbon to Denver, typically featuring one-stop options. Common layover points include Heathrow Airport (LHR) with an approximate 3-hour and 15-minute layover, Philadelphia International Airport (PHL) at about 4 hours and 45 minutes, and Pierre Elliott Trudeau International Airport (YUL) with a layover of around 2 hours and 15 minutes. These choices allow you to balance price, total travel time, and cabin class to find your ideal itinerary.

  • United: This full-service airline provides comprehensive one-stop service, with one-way fares generally falling between $895 and $1405. It accounts for around 31% of departures on this route, featuring an in-flight duration of 12 hours and 30 minutes, leading to a total travel time of approximately 15 hours and 30 minutes, including layovers.
  • American Airlines: As a full-service carrier, American Airlines offers one-stop flights with one-way ticket prices usually ranging from $605 to $1185. It makes up about 23% of the departures on this route, featuring an in-flight time of 12 hours and 30 minutes, and a total journey duration of around 15 hours and 30 minutes, inclusive of layovers.
  • British Airways: This full-service airline provides one-stop service, with one-way fares typically priced between $525 and $1055. British Airways represents approximately 21% of departures on this route, with a flying time of 12 hours and 30 minutes and an overall travel time of roughly 15 hours and 30 minutes, factoring in layovers.
  • Air Canada: Offering a full-service experience, Air Canada features one-stop flights with one-way fares generally ranging from $550 to $1150. It constitutes about 6% of the departures on this route, with an in-flight duration of 12 hours and 30 minutes and a total travel time of around 15 hours and 30 minutes, including layovers.
  • Aer Lingus: This full-service airline provides one-stop service, with one-way fares usually between $565 and $1085. Aer Lingus accounts for roughly 5% of flights on this route, offering an in-flight time of 12 hours and 30 minutes and a total journey time of about 15 hours and 30 minutes, including layovers.

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

  • Lisbon to Colorado Springs (LIS-COS): Colorado Springs Airport (COS) is located approximately 73 miles from Denver International Airport (DEN).
  • Lisbon to Cheyenne (LIS-CYS): Cheyenne Regional Airport (CYS) lies about 90 miles from Denver International Airport (DEN).

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

Getting some of the best deals on flights from Lisbon to Denver 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 usually available when booking 2 to 8 weeks in advance, although most travelers tend to book at least 2 months ahead. Departures in the morning, from 5 AM to 12 PM, often provide lower prices and are the most sought-after flight times. Additionally, flying on Tuesday typically yields cheaper rates, while Wednesday is the most popular 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.*
  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 Denver International Airport from Humberto Delgado Airport

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

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Denver, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Denver International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Denver International 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 Denver International Airport, Jeppesen Terminal Station, a metro station, is located about 0.1 miles away on foot, providing convenient access to public transportation for travelers.

Frequently asked questions

How much does a flight from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $628 and cheap return flights from $891 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights generally range between $706 and $3239, and roundtrip flights usually range from $975 to $3913. 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
The cheapest month to fly from LIS to DEN is June 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
Enter LIS to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
KLM is one of the cheapest airlines offering connecting flights from Lisbon (LIS) to Denver (DEN) with a layover in Schiphol (AMS), starting from around $963. 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.), 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Humberto Delgado (LIS) to Denver International (DEN) usually departs at around 5:00 AM. This seasonal service is available in August and September, allowing you to make the most of your time in Denver. 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
When flying from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.), the most popular departure times are in the early morning, from 6am to 9am. This time window accounts for around 29% of total traffic. British Airways, Lufthansa, and Iberia are major carriers offering flights during this time. Many travelers prefer this timing to make the most of their day in Denver.
How long does it take to fly from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
Flights from LIS to DEN with one stop typically take around 15 hours 30 minutes, 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
Business class is available on flights from LIS to DEN. Airlines that offer business class service on this route include:

  • Lufthansa
  • United Airlines
  • TAP Portugal
  • Air Canada
  • Icelandair
  • British Airways
  • Turkish Airlines
  • Iberia
  • Swiss International Air Lines
  • KLM

How do I earn miles on a Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) 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 Denver from Humberto Delgado (LIS)?
From Humberto Delgado (LIS), you can fly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like Adolfo Suarez Madrid-Barajas (MAD), Frankfurt Intl. (FRA), Heathrow (LHR) before reaching Denver. 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) Denver 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 Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.)?
If you booked your Lisbon (LIS-Humberto Delgado) to Denver, CO (DEN-Denver Intl.) 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
Humberto Delgado
Destination airport
Denver Intl.
Roundtrip price
$891
Distance
4830 mi

Book with confidence

Lisbon to Denver Flights

The cheapest times to fly from Lisbon to Denver

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 Lisbon to Denver are during the month of June. You can find some of the cheapest flights from Lisbon to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Lisbon to Denver

Sunday is one of the best days to book for cheap flights from Lisbon to Denver: 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 Lisbon to Denver

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 Lisbon to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $628 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 Lisbon to Denver 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 Lisbon to Denver 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.

 

Lisbon to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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