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Cheap flights from Lisbon to Denver from $373

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lisbon to Denver departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Lisbon to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$698Icelandair
Thu, Nov 12 - Mon, Nov 16
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$700Icelandair
Thu, Nov 12 - Mon, Nov 16
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$701Icelandair
Thu, Nov 12 - Mon, Nov 16
Multiple Airlines Logo
7:00 pm - 8:18 amLIS  Lisbon Humberto Delgado-DEN Denver Intl
20h 18m1 stop Miami
Multiple Airlines Logo
6:56 pm - 5:15 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
15h 19m1 stop Miami
$851Multiple Airlines
Wed, Oct 14 - Wed, Oct 21
Multiple Airlines Logo
12:30 pm - 8:18 amLIS  Lisbon Humberto Delgado-DEN Denver Intl
26h 48m2 stops Madrid Barajas Miami
Multiple Airlines Logo
4:40 pm - 1:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$865Multiple Airlines
Tue, Oct 13 - Wed, Oct 21
Multiple Airlines Logo
12:30 pm - 8:18 amLIS  Lisbon Humberto Delgado-DEN Denver Intl
26h 48m2 stops Madrid Barajas Miami
Multiple Airlines Logo
4:40 pm - 1:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$865Multiple Airlines
Tue, Oct 13 - Mon, Oct 19
Aer Lingus Logo
10:15 pm - 6:15 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
27h 00m1 stop Dublin
Aer Lingus Logo
8:00 pm - 9:35 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
18h 35m1 stop Dublin
$869Aer Lingus
Fri, Sep 4 - Sat, Sep 19
Aer Lingus Logo
10:15 pm - 6:15 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
27h 00m1 stop Dublin
Aer Lingus Logo
8:00 pm - 9:35 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
18h 35m1 stop Dublin
$872Aer Lingus
Fri, Sep 4 - Sat, Sep 19
United Airlines Logo
7:25 am - 3:40 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
15h 15m1 stop Frankfurt am Main
United Airlines Logo
1:58 pm - 10:30 amDEN  Denver Intl-LIS Lisbon Humberto Delgado
13h 32m1 stop Washington, D.C. Dulles Intl
$999United Airlines
Thu, Oct 15 - Mon, Oct 19
United Airlines Logo
7:25 am - 3:40 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
15h 15m1 stop Frankfurt am Main
United Airlines Logo
12:30 pm - 8:20 amDEN  Denver Intl-LIS Lisbon Humberto Delgado
12h 50m1 stop Newark
$999United Airlines
Thu, Oct 15 - Fri, Oct 23

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Air France flights from Lisbon to Denver

Our best Air France deals on Lisbon to Denver flight tickets
Air France
Aug 27
LIS9:50 amLisbon Humberto Delgado
19h 54m
2 stops
DEN10:44 pmDenver Intl
Sep 12
DEN3:25 pmDenver Intl
16h 30m
2 stops
LIS2:55 pmLisbon Humberto Delgado
$986
Air France
Oct 13
LIS10:00 amLisbon Humberto Delgado
17h 13m
1 stop
DEN8:13 pmDenver Intl
Oct 20
DEN11:28 amDenver Intl
16h 17m
1 stop
LIS10:45 amLisbon Humberto Delgado
$997
Air France
Aug 19
LIS5:35 amLisbon Humberto Delgado
17h 05m
1 stop
DEN3:40 pmDenver Intl
Sep 28
DEN5:40 pmDenver Intl
17h 10m
1 stop
LIS5:50 pmLisbon Humberto Delgado
$1,316

United Airlines flights from Lisbon to Denver

Our best United Airlines deals on Lisbon to Denver flight tickets
United Airlines
Oct 15
LIS5:05 amLisbon Humberto Delgado
15h 30m
1 stop
DEN1:35 pmDenver Intl
Oct 18
DEN1:58 pmDenver Intl
13h 32m
1 stop
LIS10:30 amLisbon Humberto Delgado
$999
United Airlines
Nov 23
LIS5:00 amLisbon Humberto Delgado
15h 40m
1 stop
DEN1:40 pmDenver Intl
Dec 3
DEN4:15 pmDenver Intl
24h 15m
1 stop
LIS11:30 pmLisbon Humberto Delgado
$1,003
United Airlines
Dec 9
LIS5:00 amLisbon Humberto Delgado
15h 40m
1 stop
DEN1:40 pmDenver Intl
Dec 26
DEN8:57 pmDenver Intl
30h 08m
2 stops
LIS10:05 amLisbon Humberto Delgado
$1,005

momondo Fare Finder

 
Customize your flight search to find flights from Lisbon to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 17, 2026.
Use the filters below to find and compare flights from Lisbon to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Thu 11/12

2:00 pm-6:00 pm

1 stop35h 00m

Denver Intl

Mon 11/16

3:40 pm-12:50 pm

1 stop14h 10m

$698

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Thu 11/12

2:00 pm-6:00 pm

1 stop35h 00m

Denver Intl

Mon 11/16

3:40 pm-12:50 pm

1 stop14h 10m

$700

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Thu 11/12

2:00 pm-6:00 pm

1 stop35h 00m

Denver Intl

Mon 11/16

3:40 pm-12:50 pm

1 stop14h 10m

$701

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Wed 10/14

7:00 pm-8:18 am

1 stop20h 18m

Denver Intl

Wed 10/21

6:56 pm-5:15 pm

1 stop15h 19m

$851

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Tue 10/13

12:30 pm-8:18 am

2 stops26h 48m

Denver Intl

Wed 10/21

4:40 pm-1:50 pm

1 stop14h 10m

$865

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Tue 10/13

12:30 pm-8:18 am

2 stops26h 48m

Denver Intl

Mon 10/19

4:40 pm-1:50 pm

1 stop14h 10m

$865

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Fri 9/4

10:15 pm-6:15 pm

1 stop27h 00m

Denver Intl

Sat 9/19

8:00 pm-9:35 pm

1 stop18h 35m

$869

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Fri 9/4

10:15 pm-6:15 pm

1 stop27h 00m

Denver Intl

Sat 9/19

8:00 pm-9:35 pm

1 stop18h 35m

$872

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Thu 10/15

7:25 am-3:40 pm

1 stop15h 15m

Denver Intl

Mon 10/19

1:58 pm-10:30 am

1 stop13h 32m

$999
Quickest round-trip

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Thu 10/15

7:25 am-3:40 pm

1 stop15h 15m

Denver Intl

Fri 10/23

12:30 pm-8:20 am

1 stop12h 50m

$999

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Lisbon to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Lisbon and Denver?

Prices are currently low for flights on this route.

Typical prices usually range from $1,084 to $1,450.
The lowest price recently found on this route was $698.

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Lisbon is in February. Flight prices, which tend to average around $928, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in February, then you should wait until January to fly from Lisbon, when ticket prices are also cheap, with an average price of $933.

Can stopping save me money on Lisbon to Denver flights?

You could potentially save up to 15% on your flight if you consider stops on a Lisbon to Denver flight.

How have Lisbon to Denver flight prices changed over time?

As of August 2026, prices for Lisbon to Denver flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Lisbon to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Lisbon to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Lisbon to Denver (LIS to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Lisbon to Denver

Best Price Found

$373

Fastest flight time

15h 40m

Direct flights

None
The best one-way flight to Denver from Lisbon in the past 72 hours is $373. The best round-trip flight deal from Lisbon to Denver found on momondo in the last 72 hours is $698.
The fastest flight from Lisbon to Denver takes 15h 40m
There are no direct flights from Lisbon to Denver. There are no popular flight routes from Lisbon to Denver.
Search flight deals

Frequently asked questions about flying from Lisbon to Denver

  • How far is Lisbon Humberto Delgado to Denver Intl by plane?

    A flight from Lisbon Humberto Delgado to Denver Intl will travel around 4847.0 mi. Typically, this will take 15h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Denver Intl Airport?

    Prices for flights from Lisbon Humberto Delgado Airport to Denver Intl Airport were last updated today.

  • How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Denver Intl Airport?

  • How old do you have to be to fly from Lisbon Humberto Delgado Airport to Denver Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lisbon Humberto Delgado Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents required for your trip to Denver Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Denver Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Lisbon to Denver?

Best airlines flying from Lisbon to Denver

Compare and see reviews for airlines that fly from Lisbon to Denver with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $933Free CancellationRating
7.4
10,106 reviews
Search United Airlines flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Boulder
Westminster
Longmont
Manitou Springs
Lakewood
Greeley
Keystone
Thornton
Cripple Creek
Centennial
Littleton
Englewood
Frisco
Winter Park
Golden

Why use momondo?

Why should I use momondo to find a flight deal from Lisbon to Denver?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Lisbon to Denver. momondo saves you time and could save you money on your trip.

Can I find flights from Lisbon to Denver with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Lisbon to Denver flights to just show those with flexible booking policies.

How can momondo help me find flights from Lisbon to Denver?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Lisbon to Denver.

I’m not ready to book a flight from Lisbon to Denver right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Denver, momondo offers a useful price alert feature which will track prices for flights to Denver from Lisbon and alert you when they change.

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