$557 Cheap Flights from Lisbon (LIS) to Denver (DEN)

View $557 flight on Mon, Feb 16, 2026Opens in a new window

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

Cheap Flights from Lisbon to Denver (LIS-DEN)

Prices were available within the past 7 days and start at $557 for one-way flights and $813 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Tue, Feb 10 - Tue, Feb 17
LIS
Lisbon
DEN
Denver
$813 Roundtrip, found 3 days ago
$813
Roundtrip
found 3 days ago
Select Iberia flight, departing Tue, Feb 10 from Lisbon to Denver, returning Tue, Feb 17, priced at $813 found 3 days ago
Lufthansa
Tue, Dec 9 - Tue, Dec 30
LIS
Lisbon
DEN
Denver
$852 Roundtrip, found 6 days ago
$852
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Tue, Dec 9 from Lisbon to Denver, returning Tue, Dec 30, priced at $852 found 6 days ago
Air Canada
Tue, Feb 10 - Tue, Feb 17
LIS
Lisbon
DEN
Denver
$858 Roundtrip, found 3 days ago
$858
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Feb 10 from Lisbon to Denver, returning Tue, Feb 17, priced at $858 found 3 days ago
United
Tue, Mar 10 - Tue, Apr 14
LIS
Lisbon
DEN
Denver
$878 Roundtrip, found 16 hours ago
$878
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Mar 10 from Lisbon to Denver, returning Tue, Apr 14, priced at $878 found 16 hours ago
British Airways
Wed, Apr 15 - Sun, Apr 19
LIS
Lisbon
DEN
Denver
$882 Roundtrip, found 2 hours ago
$882
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Apr 15 from Lisbon to Denver, returning Sun, Apr 19, priced at $882 found 2 hours ago
Iberia
Sat, Jan 24 - Fri, Jan 30
LIS
Lisbon
DEN
Denver
$889 Roundtrip, found 4 days ago
$889
Roundtrip
found 4 days ago
Select Iberia flight, departing Sat, Jan 24 from Lisbon to Denver, returning Fri, Jan 30, priced at $889 found 4 days ago
Swiss International Air Lines
Sun, Dec 7 - Sun, Dec 14
LIS
Lisbon
DEN
Denver
$891 Roundtrip, found 4 days ago
$891
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Sun, Dec 7 from Lisbon to Denver, returning Sun, Dec 14, priced at $891 found 4 days ago
American Airlines
Tue, Mar 10 - Tue, Apr 14
LIS
Lisbon
DEN
Denver
$902 Roundtrip, found 16 hours ago
$902
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, Mar 10 from Lisbon to Denver, returning Tue, Apr 14, priced at $902 found 16 hours ago
Aer Lingus
Tue, Jun 23 - Mon, Jul 27
LIS
Lisbon
DEN
Denver
$912 Roundtrip, found 5 days ago
$912
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Tue, Jun 23 from Lisbon to Denver, returning Mon, Jul 27, priced at $912 found 5 days ago
Brussels Airlines
Thu, Nov 27 - Tue, Mar 3
LIS
Lisbon
DEN
Denver
$917 Roundtrip, found 6 hours ago
$917
Roundtrip
found 6 hours ago
Select Brussels Airlines flight, departing Thu, Nov 27 from Lisbon to Denver, returning Tue, Mar 3, priced at $917 found 6 hours ago

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

September is typically the cheapest month to fly

From $627 - $1,252 per traveler.

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 $956
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $956

Frequently asked questions

How much does a flight from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN) cost?
Lock in a cheap one-way flight from $557 or cheap return flight from $813 from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN)?
The cheapest month to fly from LIS to DEN is February, when demand is low. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LIS to DEN flight.
How many flights per day from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN)?
You'll have to take a flight with a layover if you're traveling from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from LIS to DEN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on a range of factors, such as 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 Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN)?
Choose a flight from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**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 Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from LIS to DEN are typically more expensive. For the lowest rates, start searching for flights early. That being said, if you're flexible with your travel dates, you may land a cheap ticket right before you leave.
Is it cheaper to book a LIS to DEN flight and hotel package?
Compared with arranging hotels and flights separately, booking a LIS to DEN flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place takes the hassle out of travel planning. Just secure your flights and select from our extensive range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Humberto Delgado Airport (LIS) to Denver Intl. Airport (DEN)?
It's generally possible to reschedule or cancel your LIS to DEN flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Humberto Delgado
Destination airport
Denver Intl.
Airlines serving
Aer Lingus, Air Canada, Air Europa, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$813
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 February. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $557 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

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*Available to One Key members.