$448+ Cheap flights from Portugal to Denver (DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Sep 6 — Sep 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
One-way
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 August 7, 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 August 7, 2026.
This Icelandair deal was found by Cheapflights users on 8/4. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:00 pm -
1 stop35h 00m
Mon 11/233:40 pm -
1 stop14h 10m
Deal found 8/4![Icelandair logo]()
$697
This Icelandair deal was found by Cheapflights users on 8/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:00 pm -
1 stop35h 00m
Mon 11/163:40 pm -
1 stop14h 10m
Deal found 8/6![Icelandair logo]()
$698
This Expedia deal was found by Cheapflights users on 8/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 pm -
1 stop27h 00m
Sat 9/198:00 pm -
1 stop18h 35m
Deal found 8/7![Aer Lingus logo]()
$868
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/410:15 pm -
1 stop27h 00m
Fri 9/188:00 pm -
1 stop18h 35m
Deal found 8/2![Aer Lingus logo]()
$869
This Mytrip deal was found by Cheapflights users on 8/3. 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.
Thu 10/226:05 pm -
1 stop23h 17m
Wed 11/43:40 pm -
2 stops19h 40m
Deal found 8/3![Multiple Airlines logo]()
$887
This Gotogate deal was found by Cheapflights users on 8/3. 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 10/223:00 pm -
1 stop35h 00m
Wed 11/43:40 pm -
1 stop14h 10m
Deal found 8/3![Icelandair logo]()
$912
This Iberia deal was found by Cheapflights users on 8/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:35 am -
2 stops20h 03m
Wed 10/2812:17 pm -
2 stops17h 33m
Deal found 8/3![Multiple Airlines logo]()
$961
This Iberia deal was found by Cheapflights users on 8/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:25 am -
2 stops22h 34m
Sat 9/194:51 pm -
2 stops16h 14m
Deal found 8/4![Iberia logo]()
$964
This Mytrip deal was found by Cheapflights users on 8/5. 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.
Sat 9/197:00 am -
3 stops36h 19m
Sat 9/264:40 pm -
2 stops23h 50m
Deal found 8/5![Multiple Airlines logo]()
$971
This Mytrip deal was found by Cheapflights users on 8/4. 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.
Wed 12/25:30 pm -
1 stop24h 00m
Wed 3/311:20 am -
2 stops24h 00m
Deal found 8/4![Multiple Airlines logo]()
$972
This Air Canada deal was found by Cheapflights users on 8/4. 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.
Thu 10/155:50 am -
2 stops19h 56m
Mon 10/199:40 am -
2 stops20h 35m
Deal found 8/4![Air Canada logo]()
$1,345
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/219:40 am -
2 stops21h 13m
Tue 8/259:45 am -
2 stops15h 20m
Deal found 8/5![United Airlines logo]()
$1,382
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 August 7, 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 August 7, 2026.
This Delta deal was found by Cheapflights users on 8/5. 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 9/115:00 am -
2 stops22h 05m
Fri 9/2512:15 pm -
2 stops19h 40m
Deal found 8/5![Delta logo]()
$975
This Air Canada deal was found by Cheapflights users on 8/4. 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.
Thu 10/155:50 am -
2 stops19h 56m
Mon 10/199:40 am -
2 stops20h 35m
Deal found 8/4![Air Canada logo]()
$1,345
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/219:40 am -
2 stops21h 13m
Tue 8/259:45 am -
2 stops15h 20m
Deal found 8/5![United Airlines logo]()
$1,382
This Delta deal was found by Cheapflights users on 8/5. 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 9/165:00 am -
2 stops19h 21m
Wed 10/2811:07 am -
2 stops18h 13m
Deal found 8/5![Delta logo]()
$975
This Delta deal was found by Cheapflights users on 8/5. 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 9/45:00 am -
2 stops21h 51m
Fri 9/186:35 am -
2 stops19h 15m
Deal found 8/5![Delta logo]()
$975
This Mytrip deal was found by Cheapflights users on 8/5. 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 8/217:00 am -
2 stops18h 55m
Tue 8/258:10 pm -
3 stops22h 20m
Deal found 8/5![Multiple Airlines logo]()
$2,224
This Delta deal was found by Cheapflights users on 8/7. 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 9/45:00 am -
2 stops21h 51m
Sat 9/193:25 pm -
2 stops19h 25m
Deal found 8/7![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 8/4. 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 9/195:35 am -
1 stop17h 05m
Sun 9/276:35 am -
2 stops19h 15m
Deal found 8/4![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 8/7. 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 8/255:00 am -
2 stops21h 51m
Sat 9/1912:15 pm -
2 stops19h 40m
Deal found 8/7![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 8/3. 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 9/25:00 am -
2 stops24h 44m
Tue 9/296:35 am -
2 stops19h 15m
Deal found 8/3![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 8/2. 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 11/2412:50 pm -
2 stops19h 20m
Deal found 8/2![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 8/7. 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 10/245:00 am -
2 stops19h 08m
Sat 11/712:15 pm -
2 stops19h 55m
Deal found 8/7![Delta logo]()
$976
Last-minute flights from Portugal to DenverDiscover last-minute flight deals from Portugal to Denver. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to Denver. Data last updated August 7, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/219:40 am -
1 stop18h 31m
Tue 8/2510:20 am -
2 stops14h 45m
Deal found 8/5![United Airlines logo]()
$1,382
This Mytrip deal was found by Cheapflights users on 8/5. 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 8/217:00 am -
2 stops18h 55m
Tue 8/258:10 pm -
3 stops22h 20m
Deal found 8/5![Multiple Airlines logo]()
$2,224
This Iberia deal was found by Cheapflights users on 8/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:25 am -
2 stops22h 34m
Sat 9/194:51 pm -
2 stops16h 14m
Deal found 8/4![Iberia logo]()
$964
This Delta deal was found by Cheapflights users on 8/3. 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 9/25:00 am -
2 stops24h 44m
Tue 9/296:35 am -
2 stops19h 15m
Deal found 8/3![Delta logo]()
$976
This Expedia deal was found by Cheapflights users on 8/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 pm -
1 stop27h 00m
Sat 9/198:00 pm -
1 stop18h 35m
Deal found 8/7![Aer Lingus logo]()
$868
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/410:15 pm -
1 stop27h 00m
Fri 9/188:00 pm -
1 stop18h 35m
Deal found 8/2![Aer Lingus logo]()
$869
This Delta deal was found by Cheapflights users on 8/5. 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 9/45:00 am -
2 stops21h 51m
Fri 9/186:35 am -
2 stops19h 15m
Deal found 8/5![Delta logo]()
$975
This KLM deal was found by Cheapflights users on 8/7. 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.
Fri 9/45:00 am -
2 stops17h 23m
Sat 9/195:40 pm -
1 stop21h 45m
Deal found 8/7![Multiple Airlines logo]()
$982
This Iberia deal was found by Cheapflights users on 8/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:35 am -
2 stops20h 03m
Wed 10/2812:17 pm -
2 stops17h 33m
Deal found 8/3![Multiple Airlines logo]()
$961
This Delta deal was found by Cheapflights users on 8/4. 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 9/165:35 am -
1 stop17h 05m
Wed 10/286:30 am -
1 stop19h 30m
Deal found 8/4![Delta logo]()
$980
This Mytrip deal was found by Cheapflights users on 8/5. 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.
Sat 9/197:00 am -
3 stops36h 19m
Sat 9/264:40 pm -
2 stops23h 50m
Deal found 8/5![Multiple Airlines logo]()
$971
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 August 7, 2026.
Search for one-way flight options from Portugal to Denver. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 10/268:20 am -
2 stops31h 28m
Deal found 8/3![Multiple Airlines logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/318:25 am -
2 stops23h 19m
Deal found 8/4![Multiple Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 11/212:30 pm -
2 stops28h 18m
Deal found 8/5![Multiple Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 11/146:30 am -
2 stops34h 18m
Deal found 8/4![Multiple Airlines logo]()
$462
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1412:30 pm -
3 stops32h 30m
Deal found 8/4![Multiple Airlines logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1312:30 pm -
3 stops32h 30m
Deal found 8/4![Multiple Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/2312:30 pm -
3 stops39h 54m
Deal found 8/4![Multiple Airlines logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 10/196:35 am -
3 stops38h 25m
Deal found 8/6![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 10/246:35 am -
3 stops33h 56m
Deal found 8/3![Multiple Airlines logo]()
$471
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 12/159:05 am -
2 stops31h 19m
Deal found 8/3![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 10/712:30 pm -
3 stops52h 01m
Deal found 8/5![Multiple Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/198:50 pm -
2 stops41h 47m
Deal found 8/7![Multiple Airlines logo]()
$582
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 August 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $697 (Icelandair) |
One-way from | $448 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $1,376 |
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 2,558,603 searches. Data last updated August 7, 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
Fri 9/11
5:00 am-8:05 pm
2 stops22h 05m
Denver Intl
Fri 9/25
12:15 pm-2:55 pm
2 stops19h 40m
$975
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Wed 9/16
5:00 am-5:21 pm
2 stops19h 21m
Denver Intl
Wed 10/28
11:07 am-11:20 am
2 stops18h 13m
$975
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Fri 9/4
5:00 am-7:51 pm
2 stops21h 51m
Denver Intl
Fri 9/18
6:35 am-8:50 am
2 stops19h 15m
$975
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Fri 9/4
5:00 am-7:51 pm
2 stops21h 51m
Denver Intl
Sat 9/19
3:25 pm-5:50 pm
2 stops19h 25m
$976
Quickest round-trip
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Sat 9/19
5:35 am-3:40 pm
1 stop17h 05m
Denver Intl
Sun 9/27
6:35 am-8:50 am
2 stops19h 15m
$976
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Tue 8/25
5:00 am-7:51 pm
2 stops21h 51m
Denver Intl
Sat 9/19
12:15 pm-2:55 pm
2 stops19h 40m
$976
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Wed 9/2
5:00 am-10:44 pm
2 stops24h 44m
Denver Intl
Tue 9/29
6:35 am-8:50 am
2 stops19h 15m
$976
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Fri 11/20
5:00 am-8:25 pm
2 stops22h 25m
Denver Intl
Tue 11/24
12:50 pm-3:10 pm
2 stops19h 20m
$976
LisbonDenver
LIS Lisbon Humberto Delgado - DEN Denver Intl
LISDEN
Lisbon Humberto Delgado
Sat 10/24
5:00 am-5:08 pm
2 stops19h 08m
Denver Intl
Sat 11/7
12:15 pm-3:10 pm
2 stops19h 55m
$976
FunchalDenver
FNC Funchal Madeira - DEN Denver Intl
FNCDEN
Funchal Madeira
Thu 10/15
5:50 am-6:46 pm
2 stops19h 56m
Denver Intl
Mon 10/19
9:40 am-1:15 pm
2 stops20h 35m
$1,345
Showing 1-10 of 27 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, November is the cheapest month in which you can book a flight from Portugal to Denver (average of $875). 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 August 7, 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.
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Crew
8.1
Overall
7.4
Food
6.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Crew
8.1
Overall
7.4
Food
6.7
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
Black Hawk
Centennial
Lakewood
Broomfield
Golden
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Greeley
Winter Park
Limon
Manitou Springs
Frisco
Englewood
Glendale
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Denver flight routes
Flights by cabin class
Other flight options
Popular flights
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 August 7, 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 August 7, 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 2,558,603 searches. Data last updated August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$920 | Average$1,083 | FlexibilityNo cancel fee | On-time69% |