$427+ Cheap flights from Portugal to Denver (DEN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Portugal to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portugal to Denver
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Cheapest flights from Portugal to DenverExplore the most affordable flight options available from Portugal to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Portugal to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This Gotogate deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:00 pm -
1 stop35h 00m
Wed 11/253:40 pm -
1 stop14h 10m
Deal found 9/18![Icelandair logo]()
$653
This Gotogate deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:55 am -
1 stop19h 30m
Mon 11/167:30 pm -
1 stop36h 40m
Deal found 9/21![Turkish Airlines logo]()
$782
This Turkish Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:55 am -
1 stop18h 30m
Mon 11/237:30 pm -
1 stop20h 55m
Deal found 9/22![Turkish Airlines logo]()
$785
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:15 pm -
1 stop24h 58m
Mon 11/96:40 am -
1 stop20h 50m
Deal found 9/18![Multiple Airlines logo]()
$805
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:50 pm -
2 stops30h 35m
Wed 11/253:40 pm -
1 stop14h 10m
Deal found 9/21![Multiple Airlines logo]()
$844
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:20 pm -
2 stops29h 11m
Mon 11/233:40 pm -
1 stop14h 10m
Deal found 9/22![Multiple Airlines logo]()
$847
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:35 pm -
2 stops33h 38m
Mon 11/163:40 pm -
2 stops23h 25m
Deal found 9/21![Multiple Airlines logo]()
$858
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:30 pm -
3 stops37h 19m
Mon 11/93:40 pm -
3 stops26h 20m
Deal found 9/18![Multiple Airlines logo]()
$1,002
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:10 pm -
3 stops34h 50m
Tue 11/103:40 pm -
3 stops34h 35m
Deal found 9/19![Multiple Airlines logo]()
$1,038
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:55 pm -
2 stops52h 41m
Mon 11/912:40 pm -
2 stops37h 35m
Deal found 9/18![TAP AIR PORTUGAL logo]()
$1,127
This Lufthansa deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:50 pm -
1 stop31h 45m
Tue 11/1011:15 am -
2 stops20h 05m
Deal found 9/19![Lufthansa logo]()
$1,171
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 pm -
2 stops28h 22m
Wed 10/75:40 pm -
1 stop16h 10m
Deal found 9/17![Multiple Airlines logo]()
$1,175
Best flights from Portugal to DenverDiscover carefully curated flight deals from Portugal to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Portugal to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This Turkish Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/15:55 am -
1 stop18h 30m
Mon 2/157:30 pm -
1 stop20h 55m
Deal found 9/22![Turkish Airlines logo]()
$786
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
2 stops22h 11m
Thu 12/310:42 am -
2 stops17h 43m
Deal found 9/18![Delta logo]()
$894
This KLM deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:00 am -
2 stops18h 02m
Tue 12/111:41 am -
1 stop14h 19m
Deal found 9/21![KLM logo]()
$898
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:30 pm -
3 stops37h 19m
Mon 11/93:40 pm -
3 stops26h 20m
Deal found 9/18![Multiple Airlines logo]()
$1,002
This Lufthansa deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:50 pm -
1 stop31h 45m
Tue 11/1011:15 am -
2 stops20h 05m
Deal found 9/19![Lufthansa logo]()
$1,171
This Air Canada deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/107:50 am -
2 stops33h 40m
Sun 2/145:40 pm -
2 stops36h 50m
Deal found 9/17![Air Canada logo]()
$1,293
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:00 am -
2 stops22h 25m
Wed 11/2512:53 pm -
2 stops19h 17m
Deal found 9/18![Delta logo]()
$894
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:00 am -
2 stops22h 13m
Tue 11/1012:53 pm -
2 stops19h 17m
Deal found 9/19![Delta logo]()
$895
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:10 pm -
3 stops34h 50m
Tue 11/103:40 pm -
3 stops34h 35m
Deal found 9/19![Multiple Airlines logo]()
$1,038
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:35 am -
1 stop17h 05m
Mon 10/1912:15 pm -
2 stops19h 40m
Deal found 9/20![Delta logo]()
$897
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:00 am -
2 stops22h 25m
Mon 11/236:18 am -
2 stops18h 42m
Deal found 9/21![Delta logo]()
$898
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 pm -
2 stops28h 22m
Wed 10/75:40 pm -
1 stop16h 10m
Deal found 9/17![Multiple Airlines logo]()
$1,175
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:00 am -
2 stops22h 25m
Wed 11/2512:38 pm -
2 stops19h 32m
Deal found 9/17![Delta logo]()
$898
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:55 pm -
2 stops22h 40m
Mon 11/94:15 pm -
1 stop37h 35m
Deal found 9/18![Lufthansa logo]()
$1,316
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:00 am -
2 stops22h 25m
Tue 12/811:41 am -
1 stop14h 19m
Deal found 9/21![Delta logo]()
$899
Last-minute flights from Portugal to DenverDiscover last-minute flight deals from Portugal to Denver. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to Denver. Data last updated September 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:40 am -
2 stops31h 44m
Sun 10/49:16 pm -
3 stops34h 59m
Deal found 9/21![Multiple Airlines logo]()
$988
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:20 pm -
2 stops18h 34m
Sun 10/48:51 am -
2 stops16h 29m
Deal found 9/21![United Airlines logo]()
$1,028
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:35 am -
1 stop17h 05m
Mon 10/1912:15 pm -
2 stops19h 40m
Deal found 9/20![Delta logo]()
$897
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 pm -
2 stops28h 22m
Wed 10/75:40 pm -
1 stop16h 10m
Deal found 9/17![Multiple Airlines logo]()
$1,175
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:50 am -
2 stops21h 05m
Tue 11/1012:53 pm -
2 stops19h 17m
Deal found 9/21![Delta logo]()
$920
This Ovago deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:30 pm -
1 stop30h 55m
Tue 11/105:01 pm -
1 stop17h 44m
Deal found 9/19![British Airways logo]()
$1,026
This British Airways deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:10 am -
1 stop15h 45m
Sat 11/74:27 pm -
2 stops18h 28m
Deal found 9/20![British Airways logo]()
$918
One-way flights from Portugal to DenverSearch for one-way flight options from Portugal to Denver. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Portugal to Denver. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:25 pm -
3 stops48h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:05 am -
3 stops53h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/24:55 pm -
2 stops35h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$495
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:30 pm -
3 stops57h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:35 pm -
3 stops56h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$505
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:05 am -
3 stops43h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:20 pm -
3 stops53h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:55 am -
2 stops33h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$518
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/136:45 am -
2 stops40h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1511:40 am -
2 stops41h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$577
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/218:45 am -
3 stops30h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$590
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/108:50 am -
3 stops30h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$597
Find flight deals from Portugal to Denver
Keep the following information in mind while searching for Portugal to Denver flight deals. Data was last updated September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $653 (Gotogate) |
One-way from | $427 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,041 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal 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, Cheapflights users made 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from Portugal to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Tue 12/1
9:35 am-8:35 pm
2 stops42h 00m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$473
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Tue 3/2
7:20 am-8:21 am
3 stops32h 01m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$513
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Fri 10/30
6:00 am-11:50 am
2 stops35h 50m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$561
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Mon 10/26
2:05 pm-11:50 am
2 stops27h 45m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$562
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Sat 10/31
5:55 pm-10:45 am
2 stops46h 50m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$615
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Sun 10/4
8:35 pm-5:32 pm
3 stops51h 57m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$645
Quickest round-trip
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Tue 11/10
7:05 am-3:10 pm
1 stop15h 05m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$663
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Tue 9/29
9:30 am-9:03 pm
3 stops42h 33m
Denver Intl
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$713
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Mon 2/1
5:55 am-5:25 pm
1 stop18h 30m
Denver Intl
Mon 2/15
7:30 pm-11:25 pm
1 stop20h 55m
$786
FunchalDenver
FNC Funchal Madeira - DEN Denver Intl
FNCDEN
Funchal Madeira
Tue 2/16
9:15 pm-9:46 am
2 stops43h 31m
Denver Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$851
Showing 1-10 of 29 resultsSorted by cheapest first
Best time to book a flight from Portugal to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Portugal with our price prediction graph.
LIS-DEN
FNC-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portugal to Denver
PT0-DEN
LIS-DEN
FNC-DEN
What is the cheapest month to book a flight from Portugal to Denver?
Currently, February is the cheapest month in which you can book a flight from Portugal to Denver (average of $928). Flying from Portugal to Denver in June is currently the most expensive (average of $1,383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated September 22, 2026.
Peruse reviews from past customers who have flown with United Airlines from Portugal to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Food
6.7
Entertainment
7.1
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Overall
7.4
Food
6.7
Entertainment
7.1
Crew
8.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from Portugal to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Lakewood
Centennial
Black Hawk
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Frisco
Winter Park
Limon
Englewood
Manitou Springs
Glendale
Evergreen
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Portugal to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Search flights from Portugal to Denver by cabin class
Find flights from Portugal to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portugal and Denver flights
Browse other Portugal and Denver flight options. Last updated on September 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Portugal to Denver
Discover the top airline that operate flights from Portugal to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$933 | Average$1,083 | FlexibilityNo cancel fee | On-time69% |