$414 Cheap Flights from Denver (DEN) to Lisbon (LIS)

View $414 flight on Wed, Dec 3, 2025Opens 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 $414 for one-way flights and $464 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Dec 10 - Sun, Dec 14
DEN
Denver
LIS
Lisbon
$464 Roundtrip, found 4 hours ago
$464
Roundtrip
found 4 hours ago
Select Icelandair flight, departing Wed, Dec 10 from Denver to Lisbon, returning Sun, Dec 14, priced at $464 found 4 hours ago
United
Tue, Nov 25 - Wed, Dec 10
DEN
Denver
LIS
Lisbon
$547 Roundtrip, found 8 hours ago
$547
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Nov 25 from Denver to Lisbon, returning Wed, Dec 10, priced at $547 found 8 hours ago
Lufthansa
Tue, Nov 18 - Wed, Nov 26
DEN
Denver
LIS
Lisbon
$553 Roundtrip, found 6 days ago
$553
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Tue, Nov 18 from Denver to Lisbon, returning Wed, Nov 26, priced at $553 found 6 days ago
Air Canada
Tue, Nov 18 - Wed, Nov 26
DEN
Denver
LIS
Lisbon
$553 Roundtrip, found 6 days ago
$553
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Nov 18 from Denver to Lisbon, returning Wed, Nov 26, priced at $553 found 6 days ago
Delta
Tue, Jan 6 - Tue, Jan 20
DEN
Denver
LIS
Lisbon
$565 Roundtrip, found 3 hours ago
$565
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Jan 6 from Denver to Lisbon, returning Tue, Jan 20, priced at $565 found 3 hours ago
American Airlines
Mon, Jan 5 - Thu, Jan 22
DEN
Denver
LIS
Lisbon
$567 Roundtrip, found 3 hours ago
$567
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Mon, Jan 5 from Denver to Lisbon, returning Thu, Jan 22, priced at $567 found 3 hours ago
British Airways
Mon, Jan 5 - Thu, Jan 22
DEN
Denver
LIS
Lisbon
$568 Roundtrip, found 3 hours ago
$568
Roundtrip
found 3 hours ago
Select British Airways flight, departing Mon, Jan 5 from Denver to Lisbon, returning Thu, Jan 22, priced at $568 found 3 hours ago
Swiss International Air Lines
Wed, Jan 28 - Mon, Feb 2
DEN
Denver
LIS
Lisbon
$574 Roundtrip, found 5 days ago
$574
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Wed, Jan 28 from Denver to Lisbon, returning Mon, Feb 2, priced at $574 found 5 days ago
Virgin Atlantic
Mon, Dec 1 - Tue, Dec 9
DEN
Denver
LIS
Lisbon
$575 Roundtrip, found 5 hours ago
$575
Roundtrip
found 5 hours ago
Select Virgin Atlantic flight, departing Mon, Dec 1 from Denver to Lisbon, returning Tue, Dec 9, priced at $575 found 5 hours ago
Iberia
Mon, Dec 1 - Tue, Dec 9
DEN
Denver
LIS
Lisbon
$587 Roundtrip, found 5 hours ago
$587
Roundtrip
found 5 hours ago
Select Iberia flight, departing Mon, Dec 1 from Denver to Lisbon, returning Tue, Dec 9, priced at $587 found 5 hours ago

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

January is typically the cheapest month to fly

From $509 - $1,213 per traveler.

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 $830
LIS
Humberto Delgado
Cheapest
Flights from $830

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS) cost?
Snag a cheap one-way flight from $414 or cheap return flight from $464 from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)?
Flying in December may help you find better deals, as it's the cheapest month for flights between DEN and LIS. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)?
To find the cheapest airline flying from DEN to LIS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)?
There are no daily direct flights from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from DEN to LIS?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)?
To arrive at Humberto Delgado Airport (LIS) without delays, pick a flight that takes off from Denver Intl. Airport (DEN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS) last-minute?
Booking your plane ticket from DEN to LIS shortly before your getaway is typically more expensive. But if you're flexible with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a DEN to LIS flight and hotel package?
Booking a DEN to LIS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)?
Typically, you can cancel or reschedule your DEN to LIS flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like more information, visit our Customer Service portal.

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, Royal Air Maroc, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$464
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 December. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $414 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

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*Available to One Key members.