$333 Find Cheap Flights from Denver to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Portugal departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Denver to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$772
Porto
Porto1 stop$705
Faro
Faro2 stops$875
Funchal
Funchal1 stop$920
Ponta Delgada
Ponta Delgada2 stops$1,082
Lajes
Lajes2 stops$1,497
Porto Santo
Porto Santo2 stops$2,298
Lisbon
Lisbon1 stop$772
Porto
Porto1 stop$705
Faro
Faro2 stops$875
Funchal
Funchal1 stop$920
Ponta Delgada
Ponta Delgada2 stops$1,082
Lajes
Lajes2 stops$1,497
Porto Santo
Porto Santo2 stops$2,298

Book Cheap Denver to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Portugal

Thu, Sep 17 - Thu, Sep 24
Turkish Airlines Logo
8:25 pm - 11:30 pm
DEN
-
OPO
20h 05m
1 stop
Turkish Airlines Logo
6:10 am - 6:25 pm
OPO
-
DEN
19h 15m
1 stop
$705Turkish Airlines
Tue, Sep 29 - Thu, Oct 8
Turkish Airlines Logo
8:25 pm - 11:30 pm
DEN
-
OPO
20h 05m
1 stop
Turkish Airlines Logo
6:10 am - 6:25 pm
OPO
-
DEN
19h 15m
1 stop
$708Turkish Airlines
Sat, Aug 29 - Wed, Sep 16
Turkish Airlines Logo
8:25 pm - 11:30 pm
DEN
-
OPO
20h 05m
1 stop
Turkish Airlines Logo
4:40 pm - 6:25 pm
OPO
-
DEN
32h 45m
1 stop
$717Turkish Airlines
Wed, Oct 14 - Wed, Nov 4
United Airlines Logo
9:40 am - 9:20 am
DEN
-
LIS
16h 40m
1 stop
United Airlines Logo
5:00 am - 4:00 pm
LIS
-
DEN
18h 00m
1 stop
$773United Airlines
Wed, Oct 14 - Wed, Nov 4
Air Canada Logo
9:40 am - 9:20 am
DEN
-
LIS
16h 40m
1 stop
Air Canada Logo
5:00 am - 5:44 pm
LIS
-
DEN
19h 44m
2 stops
$774Air Canada
Mon, May 4 - Tue, May 19
United Airlines Logo
11:59 pm - 1:50 pm
DEN
-
FAO
30h 51m
2 stops
United Airlines Logo
11:40 am - 7:07 pm
FAO
-
DEN
14h 27m
1 stop
$882United Airlines
Sun, Sep 27 - Tue, Oct 13
British Airways Logo
6:40 pm - 6:05 pm
DEN
-
FNC
16h 25m
1 stop
British Airways Logo
12:20 pm - 4:25 pm
FNC
-
DEN
35h 05m
1 stop
$920British Airways
Sat, Oct 3 - Tue, Oct 13
British Airways Logo
2:13 pm - 11:30 am
DEN
-
FNC
62h 17m
2 stops
British Airways Logo
7:35 pm - 4:25 pm
FNC
-
DEN
27h 50m
1 stop
$967British Airways
Mon, May 4 - Tue, May 19
Lufthansa Logo
4:05 pm - 3:05 pm
DEN
-
FAO
16h 00m
1 stop
Lufthansa Logo
11:40 am - 9:35 pm
FAO
-
DEN
16h 55m
1 stop
$977Lufthansa
Mon, Oct 5 - Fri, Oct 9
Air Canada Logo
9:40 am - 12:50 pm
DEN
-
TER
21h 10m
2 stops
Air Canada Logo
7:10 am - 8:17 pm
TER
-
DEN
19h 07m
2 stops
$1,497Air Canada
Booking Insights

KAYAK's insights & trends for Denver to Portugal flights

Get data-powered insights and trends into flights from Denver to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Denver to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Portugal is January, when tickets cost $626 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,243 and $1,117 respectively.

How far in advance should I book a flight from Denver to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Portugal, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$333
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Denver to Porto

FAQs - booking Portugal flights

  • I’m flying from Denver to Northern Portugal. What airport should I land at?

    Passengers headed from Denver to the northern region of Portugal should consider looking for flights that land at Francisco Sá Carneiro Airport, just outside the city of Porto. Lufthansa provides a one-stop layover that goes to Munich Franz Josef Strauss Airport (MUC), while a United Airlines one-stop layover goes to Newark Liberty International Airport (EWR).

  • What airport should I use when flying to the Tagus Valley region?

    If you’re flying from Denver International Airport to Portugal to visit the Tagus Valley region, then consider booking flights to Humberto Delgado Airport, just outside the nation’s capital Lisbon. American Airlines offers a layover that stops at Philadelphia International Airport (PHL), while United Airlines has a one-stop layover that goes to Newark Liberty International Airport. In addition, British Airways provides a layover flight that makes one stop at London Heathrow Airport.

  • I’d like to visit the southernmost region of Portugal. What airport should I fly to?

    The Algarve region in the southern part of Portugal is well-known for its beaches. To get there from Denver International Airport, look for layover flights to Faro International Airport. Aer Lingus has a one-stop layover that goes to Dublin Airport (DUB), while Lufthansa has a one-stop layover that goes to Frankfurt Airport (FRA). In addition, United Airlines offers a layover that makes one stop at Newark Liberty International Airport.

  • Where should I fly to when visiting São Miguel in the Azores?

    São Miguel is the largest island in the Azores region of Portugal. If you’re headed there from Denver, consider looking for layover flights to Aeroporto João Paulo II (PDL), located near the capital city of Ponta Delgada. JetBlue and Azores Airlines offer a combined one-stop layover that goes to Boston Logan International Airport (BOS), as well as a slightly faster one-stop layover that goes to New York John F Kennedy International Airport (JFK).

  • How does KAYAK find such low prices on flights from Denver to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Denver to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Denver to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Portugal

  • United States citizens with a valid passport that has two blank pages and at least three months of validity past their departure date can travel to Portugal for up to 90 days, without needing a visa.
  • Headed to the islands of Madeira in Portugal? If so, consider looking at layover flights from Denver Airport to Cristiano Ronaldo Madeira International Airport (FNC). British Airways provides one-stop layovers that go to London Heathrow Airport (LHR).
  • The Beiras region of central Portugal doesn’t have any airports itself. However, it’s roughly halfway between Francisco Sá Carneiro Airport (OPO) in Porto to the north and Humberto Delgado Airport (LIS) in Lisbon to the south, so layover flights to either airport are convenient.
  • Denver International Airport (DEN) features a variety of accessible services and facilities for passengers with reduced mobility. These include accessible parking spaces, restrooms, elevators, wheelchairs upon request, and recognition of hidden disabilities through the Sunflower Lanyard program.
  • Although there are no airports in the Alentejo region of southern Portugal, Lisbon Humberto Delgado Airport is to the northwest and Faro International Airport (FAO) is to the south. Depending on where you’d like to go, layover flights to either airport will put you within a car ride or bus ride to the region.

Reviews of the top 5 airlines serving from Denver to Portugal

 
Need help choosing which airline to fly with from Denver to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Turkish AirlinesOverall score based on 4321 reviews
7.3Boarding
7.3Comfort
7.5Entertainment
7.8Crew
7.5Food
Airline reviews

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

8.0 ExcellentJoaquin, Apr 2026
IAH - IST
Read more Turkish Airlines reviews

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

As a first time flyer with Turkish Airlines. My experience was very good due to the factor that there were to many passengers on the my first flight compared to my connecting flight. However, I know that nothing is perfect and all companies are trying to accommodate their passengers to the best way possible. I will always say, a FEW INCHES will go LONG WAY. That's something all airliners should consider, and not only the money aspect!!! A long time commitment is better than one time service! Thank you

Flight was delayed. While standing at the gate, a note appeared on the sign saying the gate had changed to a gate far away. No member of the Turkish airlines team got on the microphone to instruct passengers to go to the other gate, to ignore the chiron, etc. Finally, the message disappeared. Eventually, the flight began to board. Very slowly. More slowly than I experience with other airlines. Though Istanbul may just be slow . . . In all other ways, great flight, great entertainment (top notch movies), great service, excellent food, comfortable lie-flat seat, dimmed lights, etc.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

It was a pleasant experience. In flight entertainment could have been better

The desk crew at the LAX crew could do better. A girl named Mahesi was very abrasive and unfriendly. She needs a better customer service uproar.

It was peaceful excited We enjoyed it always Turkish peaceful excited

Istanbul to Lahore flight was less than standard for international business class cabins. Seat did not were not flat and it did not operate easily. I had to push buttons hard repeatedly to operate the seat. I was in 5A seat

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

the cabin was kept too hot. couldn't sleep as a result

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

one staffer was frustrated (it happen); the flight was late and the pilot mentioned they'll make amend but the snacks were the same, other than that the aircraft was clean and everything went smooth, no complaints

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

No seat back entertainment. And app had a hard time getting entertainment loaded.

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

Rude flight attendants with poor service. Worst first class experience I’ve ever had.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

My wallet was stolen while I was sleeping on the plane.

Good boarding but extremely cold temperature in both flights (60 F!).

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Worst airline in the world. They downgraded me from business class to economy with no compensation.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Overall ok. Best part has always been the sundae dessert.

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

Even if you wait for connecting passengers you should not be an hour late departing waiting their luggage. Your passengers may have connections in the other end and you harm them.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

It was not British Air, we were put onto Air Portugal for our London to Lisbon leg.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Wish the food and overall service was better. They treat Business class passengers same as economy

Everything you need to know for your flight from Denver to Portugal

Information on your arrival and departure airports