Popular airlines from Denver Intl. Airport (DEN) to Humberto Delgado Airport (LIS)
Air CanadaAir Canada
British AirwaysBritish Airways
LufthansaLufthansa
Swiss International Air LinesSwiss International Air Lines
Brussels AirlinesBrussels Airlines
Aer LingusAer Lingus
JetBlue AirwaysJetBlue Airways
Cheap Flights from Denver to Lisbon (DEN-LIS)
Prices were available within the past 7 days and start at $408 for one-way flights and $585 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Frequently asked questions
Travel 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, Royal Air Maroc, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic |
Roundtrip price | $585 |
Distance | 4830 mi |
Book with confidence
Book with confidence
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 November. 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 $408 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.
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