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445 € Cheap Flights from Denver to Lisbon

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Flight deals from Denver to Lisbon

Looking for a cheap last-minute deal or the best return flight from Denver to Lisbon? Find the lowest prices on one-way and return tickets right here.
Lisbon.445 € per passenger.Departing Wed, 4 Mar, returning Tue, 10 Mar.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Denver International on Wed, 4 Mar, arriving in Lisbon.Inbound indirect flight with Lufthansa, departs from Lisbon on Tue, 10 Mar, arriving in Denver International.Price includes taxes and charges.From 445 €, select.
Lisbon.445 € per passenger.Departing Sun, 1 Mar, returning Wed, 1 Apr.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Denver International on Sun, 1 Mar, arriving in Lisbon.Inbound indirect flight with Lufthansa, departs from Lisbon on Wed, 1 Apr, arriving in Denver International.Price includes taxes and charges.From 445 €, select.
Lisbon.446 € per passenger.Departing Wed, 25 Feb, returning Wed, 4 Mar.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Denver International on Wed, 25 Feb, arriving in Lisbon.Inbound indirect flight with Lufthansa, departs from Lisbon on Wed, 4 Mar, arriving in Denver International.Price includes taxes and charges.From 446 €, select.
Lisbon.449 € per passenger.Departing Tue, 17 Feb, returning Wed, 25 Feb.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Denver International on Tue, 17 Feb, arriving in Lisbon.Inbound indirect flight with Lufthansa, departs from Lisbon on Wed, 25 Feb, arriving in Denver International.Price includes taxes and charges.From 449 €, select.
Lisbon.466 € per passenger.Departing Mon, 27 Apr, returning Fri, 8 May.Return flight with United.Outbound indirect flight with United, departs from Denver International on Mon, 27 Apr, arriving in Lisbon.Inbound indirect flight with United, departs from Lisbon on Fri, 8 May, arriving in Denver International.Price includes taxes and charges.From 466 €, select.
Lisbon.482 € per passenger.Departing Wed, 8 Apr, returning Thu, 16 Apr.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Denver International on Wed, 8 Apr, arriving in Lisbon.Inbound indirect flight with British Airways, departs from Lisbon on Thu, 16 Apr, arriving in Denver International.Price includes taxes and charges.From 482 €, select.
Lisbon.516 € per passenger.Departing Mon, 4 May, returning Tue, 12 May.Return flight with Finnair.Outbound indirect flight with Finnair, departs from Denver International on Mon, 4 May, arriving in Lisbon.Inbound indirect flight with Finnair, departs from Lisbon on Tue, 12 May, arriving in Denver International.Price includes taxes and charges.From 516 €, select.
Lisbon.549 € per passenger.Departing Mon, 21 Sep, returning Mon, 28 Sep.Return flight with Brussels Airlines and Iberia.Outbound indirect flight with Brussels Airlines, departs from Denver International on Mon, 21 Sep, arriving in Lisbon.Inbound indirect flight with Iberia, departs from Lisbon on Mon, 28 Sep, arriving in Denver International.Price includes taxes and charges.From 549 €, select.

Find the cheapest month to fly from Denver to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Lisbon flights are currently cheapest in March.
Feb
from 449 €
Mar
from 445 €
Apr
from 482 €
May
from 516 €
Jun
from 794 €
Jul
from 708 €
Aug
from 559 €
Sep
from 549 €
Oct
from 558 €
Nov
Find prices
Dec
Find prices
Jan
Find prices

Denver to Lisbon: Alternative routes

Compare routes from Denver to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

Lisbon

8km from central Lisbon
ClosestCheapest
from 445 €
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Cascais Municipal Aerodrome

19km from central Lisbon
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Denver to Lisbon: Flight information

The things to know before you go.
Cheapest flight found445 €
Cheapest month to flyMarch

Finding cheap flights from Denver to Lisbon: Frequently asked questions

The best price we found for a return flight from Denver to Lisbon is 445 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Denver to Lisbon. But we found flights with one stop from 445 €.
As of February 2026, there are no flights flying from Denver to Lisbon.
The cheapest month to fly from Denver to Lisbon is usually March.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Lisbon Airport on Sunday, 1 March 2026.
No airlines currently offer direct flights between Denver and Lisbon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Lisbon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Lisbon is Lufthansa .

Flying from Denver to Lisbon Portela Airport (LIS): What you need to know

  • Denver International Airport (DEN) is Denver's main airport. Check out your options for reserving a flight from Denver to Lisbon Portela Airport (LIS) leaving from here.

  • Lisbon is six hours ahead of Denver. Lisbon Portela Airport is located in Lisbon, which follows the UTC+0 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to catch your flight from Denver to LIS.

  • High season means busier airports, so be there even earlier. Give yourself at least two hours before a domestic flight and four hours for an international journey to stick to your schedule.

Airports in Denver

Denver International Airport (DEN)

  • Consider adding a stopover to find cheap flights from Denver to LIS. Just uncheck 'Direct flights only' when searching for departures from Denver International Airport (DEN). Break the trip up (and maybe score a better deal) by stopping at one of these popular airports:

    • Newark Liberty International Airport (EWR)

    • Logan International Airport (BOS)

    • Philadelphia International Airport (PHL)

  • Travelling from central Denver to DEN takes around 1 hour 30 minutes on public transport. If you ride-share, drive or get a cab, you'll cover the 40 kilometres in 35 minutes or so, depending on traffic.

  • Looking for a place to stay before your flight from Denver to Lisbon Portela Airport? Check out Baymont by Wyndham Denver International Airport. Enjoy a good night's sleep here before making your way to Denver International Airport.

  • Denver International Airport scores top marks for its on-time performance. 80.23% of flights that take off from DEN arrive at their destination as scheduled.

  • You'll find DEN at 8500 Pena Boulevard.

About Lisbon Portela Airport (LIS)

  • If you have a late flight from Denver to Lisbon Portela Airport, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these hotels near LIS:

  • Explore without limits with a Lisbon Portela Airport rental car. Book your wheels from Klass Wagen, Goldcar or OK Mobility and experience more of Lisbon and beyond.

  • Booking your ride around two weeks ahead of your Denver to Lisbon Portela Airport flight can help you get a cheaper deal.

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • Lisbon Portela Airport is around 6 kilometres from central Lisbon. How long it takes to get there in a car hire or cab will depend on the time of day. Do a little research before you go.

  • It typically takes 1 hour to get there using public transport.

How to find the cheapest flights from Denver to Lisbon Portela Airport (LIS)

  • 216 € is currently the lowest price for a one-way ticket from Denver to Lisbon Portela Airport. A return flight starts from 445 €. These fares may change based on availability and demand.

  • Booking ahead of time is often the key to scoring a cheap flight from Denver to LIS. Flight prices rise as demand increases, so the closer you get to departure, the more you'll likely spend.

  • The 'Whole month' search tool shows you the cheapest Denver to Lisbon Portela Airport tickets across each month. It's a great way to find a bargain if your plans aren't set in stone.

  • Save time searching for cheap plane tickets from Denver to LIS by creating a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.

  • Filters make it easier to scoop up a deal on your flight from Denver to Lisbon Portela Airport. Choose the flight times, carriers and stops that check all your boxes. Then sort the results by 'Cheapest' to find the lowest price right away.

The best time to fly from Denver to Lisbon Portela Airport (LIS)

  • Think about your travel style when deciding your trip dates. February is the quietest month to visit Lisbon. June is when most people book flights from Denver to Lisbon Portela Airport (LIS), which may be ideal if you enjoy travelling when it's busier.

  • Book a Denver to LIS plane ticket departing in August if you're eager to explore the city during its warmest month. Expect temperatures in Lisbon to range from 16ºC (61ºF) to 29ºC (84ºF).

  • January has temperatures of between 8ºC (46ºF) and 16ºC (61ºF). Search for cheap tickets from Denver to Lisbon Portela Airport around that time if you like travelling in cooler conditions.

More about Lisbon

  • Start your Lisbon trip right by choosing the perfect place to stay. Once you've booked your flight from Denver to Lisbon Portela Airport, explore our selection of accommodation options including:

  • There are so many things to discover in this city, it can be difficult to know where to start. Belém, Pasteis de Belém and Real Mosteiro de Santa Maria de Belém are major attractions which should feature on every Lisbon itinerary.

Explore more of Portugal

  • You've seen Lisbon, now it's time to discover other corners of Portugal. Travel about 274 kilometres north to Porto to check off its leading attractions. From Ribeira District to Rio Douro and Livraria Lello, there's plenty to keep you busy.

  • If you're ready to explore another major stop in Portugal, consider Coimbra, about 177 kilometres north of Lisbon. Biblioteca Joanina, Old Cathedral of Coimbra (Se Velha de Coimbra) and Mesquita de Coimbra are key reasons to visit.

Plan the rest of your trip from Denver to Lisbon

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.