$341+ Cheap flights from Denver (DEN) to Portugal
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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Denver to Portugal with Cheapflights
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Cheapest flights from Denver to PortugalExplore the most affordable flight options available from Denver to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Denver to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Tue 12/14:20 pm
DEN
- OPO
1 stop13h 30m
Multiple Airlines
Tue 12/86:00 am
OPO
- DEN
2 stops35h 23m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$704
This FlightHub deal was found by Cheapflights users on 4/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:20 pm
DEN
- OPO
1 stop13h 30m
Lufthansa
Tue 12/86:00 am
OPO
- DEN
1 stop17h 00m
Lufthansa
Deal found 4/27![Lufthansa logo]()
$709
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Tue 11/31:45 pm
DEN
- OPO
1 stop12h 45m
United Airlines
Tue 11/1012:30 pm
OPO
- DEN
2 stops26h 12m
United Airlines
Deal found 4/27![United Airlines logo]()
$718
This Expedia deal was found by Cheapflights users on 4/26. 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.
Tue 11/34:20 pm
DEN
- OPO
1 stop13h 30m
Lufthansa
Tue 11/101:45 pm
OPO
- DEN
1 stop31h 50m
Lufthansa
Deal found 4/26![Lufthansa logo]()
$723
This Delta deal was found by Cheapflights users on 4/27. 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 12/16:10 am
DEN
- OPO
2 stops21h 20m
Delta
Tue 12/85:00 am
OPO
- DEN
2 stops24h 43m
Delta
Deal found 4/27![Delta logo]()
$724
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sat 10/177:05 pm
DEN
- OPO
2 stops31h 40m
United Airlines
Tue 11/312:35 pm
OPO
- DEN
1 stop15h 50m
United Airlines
Deal found 4/29![United Airlines logo]()
$731
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 12/55:39 pm
DEN
- OPO
2 stops38h 36m
United Airlines
Wed 12/96:00 am
OPO
- DEN
1 stop17h 00m
United Airlines
Deal found 4/30![United Airlines logo]()
$739
This Justfly.com deal was found by Cheapflights users on 4/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:20 pm
DEN
- OPO
1 stop13h 30m
Lufthansa
Mon 11/231:45 pm
OPO
- DEN
1 stop31h 50m
Lufthansa
Deal found 4/27![Lufthansa logo]()
$772
This American Airlines deal was found by Cheapflights users on 4/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:35 pm
DEN
- LIS
1 stop21h 40m
American Airlines
Wed 11/411:05 am
LIS
- DEN
2 stops18h 56m
American Airlines
Deal found 4/26![American Airlines logo]()
$819
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:25 pm
DEN
- LIS
1 stop19h 55m
Turkish Airlines
Mon 10/1210:55 am
LIS
- DEN
1 stop38h 30m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$821
This Justfly.com deal was found by Cheapflights users on 4/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:25 pm
DEN
- LIS
1 stop30h 25m
Turkish Airlines
Wed 8/2610:55 am
LIS
- DEN
1 stop38h 30m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$832
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/268:25 pm
DEN
- LIS
1 stop36h 10m
Turkish Airlines
Mon 5/114:45 pm
LIS
- DEN
1 stop32h 40m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$842
Best flights from Denver to PortugalDiscover carefully curated flight deals from Denver to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Denver to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Sat 10/2411:59 pm
DEN
- OPO
2 stops27h 31m
United Airlines
Wed 10/286:00 am
OPO
- DEN
1 stop17h 00m
United Airlines
Deal found 4/28![United Airlines logo]()
$775
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:25 pm
DEN
- OPO
1 stop20h 05m
Turkish Airlines
Sat 9/266:15 am
OPO
- DEN
1 stop19h 10m
Turkish Airlines
Deal found 4/30![Turkish Airlines logo]()
$782
This KLM deal was found by Cheapflights users on 4/30. 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.
Tue 8/1812:20 pm
DEN
- OPO
1 stop15h 10m
KLM
Mon 8/315:00 am
OPO
- DEN
2 stops17h 31m
KLM
Deal found 4/30![KLM logo]()
$891
This Delta deal was found by Cheapflights users on 4/26. 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 9/196:30 am
DEN
- OPO
2 stops19h 00m
Delta
Fri 10/95:55 am
OPO
- DEN
2 stops23h 38m
Delta
Deal found 4/26![Delta logo]()
$903
This KLM deal was found by Cheapflights users on 4/30. 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.
Tue 7/216:35 am
DEN
- LIS
1 stop18h 25m
Multiple Airlines
Sun 7/2612:45 pm
LIS
- DEN
2 stops17h 00m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,067
This British Airways deal was found by Cheapflights users on 4/30. 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.
Wed 9/236:40 pm
DEN
- FAO
1 stop17h 25m
British Airways
Thu 10/297:40 pm
FAO
- DEN
1 stop26h 50m
British Airways
Deal found 4/30![British Airways logo]()
$1,096
This Gurufare deal was found by Cheapflights users on 4/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:15 pm
DEN
- PDL
2 stops38h 50m
WestJet
Sat 9/1911:30 am
PDL
- DEN
2 stops29h 50m
WestJet
Deal found 4/28![WestJet logo]()
$1,133
This Lufthansa deal was found by Cheapflights users on 4/26. 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.
Wed 5/274:05 pm
DEN
- LIS
1 stop14h 35m
Lufthansa
Thu 6/46:15 am
LIS
- DEN
1 stop15h 05m
Lufthansa
Deal found 4/26![Lufthansa logo]()
$1,309
This Iberia deal was found by Cheapflights users on 4/28. 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 6/93:11 pm
DEN
- FNC
2 stops38h 14m
Iberia
Wed 6/171:35 pm
FNC
- DEN
2 stops41h 20m
Iberia
Deal found 4/28![Iberia logo]()
$1,590
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 9/309:40 am
DEN
- OPO
1 stop14h 20m
United Airlines
Tue 10/1312:15 pm
OPO
- DEN
2 stops33h 25m
United Airlines
Deal found 4/30![United Airlines logo]()
$818
This Turkish Airlines deal was found by Cheapflights users on 4/29. 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 8/266:00 am
DEN
- LIS
2 stops26h 35m
Turkish Airlines
Sat 9/55:05 pm
LIS
- DEN
1 stop32h 20m
Turkish Airlines
Deal found 4/29![Turkish Airlines logo]()
$965
This KLM deal was found by Cheapflights users on 4/26. 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 9/1811:59 pm
DEN
- OPO
1 stop27h 21m
KLM
Sat 10/35:55 am
OPO
- DEN
2 stops18h 43m
KLM
Deal found 4/26![KLM logo]()
$969
This Delta deal was found by Cheapflights users on 4/28. 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 7/95:45 am
DEN
- OPO
2 stops21h 45m
Delta
Thu 8/69:25 am
OPO
- DEN
2 stops20h 20m
Delta
Deal found 4/28![Delta logo]()
$999
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Wed 9/27:45 am
DEN
- OPO
2 stops16h 15m
United Airlines
Wed 9/1612:45 pm
OPO
- DEN
2 stops32h 41m
United Airlines
Deal found 4/26![United Airlines logo]()
$957
This KLM deal was found by Cheapflights users on 4/28. 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.
Tue 5/265:40 pm
DEN
- OPO
1 stop21h 25m
KLM
Fri 6/125:55 am
OPO
- DEN
1 stop16h 45m
KLM
Deal found 4/28![KLM logo]()
$975
This British Airways deal was found by Cheapflights users on 4/30. 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.
Sun 5/36:30 pm
DEN
- FNC
1 stop16h 35m
British Airways
Mon 5/186:55 pm
FNC
- DEN
2 stops34h 04m
British Airways
Deal found 4/30![British Airways logo]()
$1,110
This Justfly.com deal was found by Cheapflights users on 4/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:37 pm
DEN
- PDL
1 stop24h 43m
Multiple Airlines
Wed 9/165:30 pm
PDL
- DEN
1 stop26h 48m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$1,116
This Delta deal was found by Cheapflights users on 4/28. 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 8/63:10 pm
DEN
- LIS
2 stops19h 40m
Delta
Tue 8/115:00 am
LIS
- DEN
2 stops24h 29m
Delta
Deal found 4/28![Delta logo]()
$1,046
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 9/199:40 am
DEN
- OPO
2 stops14h 15m
United Airlines
Sat 9/2612:20 pm
OPO
- DEN
2 stops17h 45m
United Airlines
Deal found 4/30![United Airlines logo]()
$967
This KLM deal was found by Cheapflights users on 4/29. 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 10/111:59 pm
DEN
- FAO
2 stops26h 31m
KLM
Fri 10/168:50 am
FAO
- DEN
2 stops20h 53m
KLM
Deal found 4/29![KLM logo]()
$994
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:15 pm
DEN
- PDL
1 stop33h 30m
Multiple Airlines
Mon 10/125:30 pm
PDL
- DEN
1 stop26h 48m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,150
This Delta deal was found by Cheapflights users on 4/28. 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 7/142:59 pm
DEN
- LIS
2 stops19h 51m
Delta
Mon 7/205:35 am
LIS
- DEN
1 stop17h 05m
Delta
Deal found 4/28![Delta logo]()
$1,054
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 7/2211:25 am
DEN
- LIS
1 stop14h 55m
United Airlines
Wed 7/2912:55 pm
LIS
- DEN
1 stop14h 27m
United Airlines
Deal found 4/30![United Airlines logo]()
$990
This KLM deal was found by Cheapflights users on 4/29. 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 10/111:59 pm
DEN
- FAO
2 stops26h 31m
KLM
Sun 10/116:55 pm
FAO
- DEN
2 stops29h 35m
KLM
Deal found 4/29![KLM logo]()
$1,053
This Mytrip deal was found by Cheapflights users on 4/29. 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 6/87:50 pm
DEN
- PDL
3 stops29h 00m
Multiple Airlines
Mon 6/159:35 am
PDL
- DEN
1 stop16h 53m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$1,164
This Delta deal was found by Cheapflights users on 4/29. 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 7/317:09 pm
DEN
- LIS
2 stops16h 36m
Delta
Fri 8/1410:00 am
LIS
- DEN
2 stops20h 45m
Delta
Deal found 4/29![Delta logo]()
$1,090
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/1811:59 pm
DEN
- OPO
1 stop23h 56m
United Airlines
Sat 10/312:20 pm
OPO
- DEN
3 stops29h 52m
United Airlines
Deal found 4/27![United Airlines logo]()
$993
This KLM deal was found by Cheapflights users on 4/28. 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.
Sat 9/123:45 pm
DEN
- FAO
2 stops19h 20m
KLM
Fri 9/188:50 am
FAO
- DEN
2 stops20h 59m
KLM
Deal found 4/28![KLM logo]()
$1,096
This Mytrip deal was found by Cheapflights users on 4/28. 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 8/125:40 pm
DEN
- PDL
3 stops34h 05m
Multiple Airlines
Mon 8/179:35 am
PDL
- DEN
2 stops31h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$1,224
This British Airways deal was found by Cheapflights users on 4/25. 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.
Mon 6/296:35 pm
DEN
- FNC
1 stop17h 00m
British Airways
Tue 7/77:35 pm
FNC
- DEN
1 stop27h 50m
British Airways
Deal found 4/25![British Airways logo]()
$1,491
Last-minute flights from Denver to PortugalDiscover last-minute flight deals from Denver to Portugal. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Portugal. Data last updated May 1, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 4/30. 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.
Fri 5/15:40 pm
DEN
- OPO
1 stop15h 05m
Multiple Airlines
Fri 5/86:20 am
OPO
- DEN
2 stops23h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$908
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:05 pm
DEN
- OPO
1 stop24h 20m
Lufthansa
Fri 5/86:00 am
OPO
- DEN
1 stop16h 40m
Lufthansa
Deal found 4/30![Lufthansa logo]()
$909
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Sun 5/34:05 pm
DEN
- OPO
1 stop24h 20m
Lufthansa
Tue 5/1912:05 pm
OPO
- DEN
1 stop34h 35m
Lufthansa
Deal found 4/27![Lufthansa logo]()
$861
This Mytrip deal was found by Cheapflights users on 4/27. 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.
Sun 5/39:40 am
DEN
- LIS
3 stops26h 25m
Multiple Airlines
Tue 5/196:30 am
LIS
- DEN
2 stops35h 50m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$862
This Gotogate deal was found by Cheapflights users on 4/27. 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 5/44:05 pm
DEN
- FAO
1 stop16h 00m
Lufthansa
Mon 5/183:55 pm
FAO
- DEN
1 stop29h 25m
Lufthansa
Deal found 4/27![Lufthansa logo]()
$854
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:05 pm
DEN
- OPO
1 stop24h 20m
Lufthansa
Mon 11/161:45 pm
OPO
- DEN
1 stop31h 50m
Lufthansa
Deal found 4/30![Lufthansa logo]()
$872
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:41 pm
DEN
- OPO
2 stops18h 19m
American Airlines
Mon 11/168:40 pm
OPO
- DEN
2 stops19h 51m
American Airlines
Deal found 4/30![American Airlines logo]()
$881
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Mon 5/46:00 am
DEN
- OPO
2 stops20h 45m
United Airlines
Mon 11/1612:30 pm
OPO
- DEN
1 stop34h 30m
United Airlines
Deal found 4/28![United Airlines logo]()
$889
This Gotogate deal was found by Cheapflights users on 4/27. 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 5/46:10 pm
DEN
- FAO
2 stops37h 55m
Multiple Airlines
Mon 5/183:55 pm
FAO
- DEN
1 stop29h 25m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$889
This KLM deal was found by Cheapflights users on 4/27. 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.
Mon 5/42:59 pm
DEN
- FAO
2 stops21h 26m
KLM
Mon 5/189:45 pm
FAO
- DEN
2 stops24h 51m
KLM
Deal found 4/27![KLM logo]()
$898
This Mytrip deal was found by Cheapflights users on 4/26. 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 5/54:05 pm
DEN
- OPO
1 stop24h 20m
Multiple Airlines
Tue 5/126:00 am
OPO
- DEN
2 stops24h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$900
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:05 pm
DEN
- OPO
1 stop24h 20m
Lufthansa
Tue 5/126:00 am
OPO
- DEN
1 stop16h 40m
Lufthansa
Deal found 4/26![Lufthansa logo]()
$914
One-way flights from Denver to PortugalSearch for one-way flight options from Denver to Portugal. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Denver to Portugal. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 10/54:40 pm
DEN
- LIS
2 stops23h 20m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 10/44:40 pm
DEN
- OPO
2 stops21h 00m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 10/124:40 pm
DEN
- FNC
2 stops25h 30m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 9/128:10 pm
DEN
- LIS
2 stops41h 55m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 9/128:10 pm
DEN
- OPO
2 stops41h 30m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 9/204:40 pm
DEN
- OPO
2 stops21h 00m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 7/284:40 pm
DEN
- FAO
3 stops23h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$376
This British Airways deal was found by Cheapflights users on 4/26. 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.
Tue 10/136:35 pm
DEN
- FNC
1 stop34h 50m
British Airways
Deal found 4/26![British Airways logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 9/64:40 pm
DEN
- LIS
3 stops31h 10m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$382
This Air Canada deal was found by Cheapflights users on 4/28. 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 10/157:50 pm
DEN
- OPO
2 stops28h 20m
Air Canada
Deal found 4/28![Air Canada logo]()
$383
This KLM deal was found by Cheapflights users on 4/28. 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 10/1512:20 pm
DEN
- OPO
1 stop15h 10m
KLM
Deal found 4/28![KLM logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 9/2011:59 pm
DEN
- FAO
2 stops26h 11m
United Airlines
Deal found 4/30![United Airlines logo]()
$386
Find flight deals from Denver to Portugal
Keep the following information in mind while searching for Denver to Portugal flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $731 (United Airlines) |
One-way from | $347 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,083 |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to Portugal 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 May 1, 2026.
Use the filters below to find and compare flights from Denver to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sat 10/24
11:59 pm-9:30 am
2 stops27h 31m
Porto
Wed 10/28
6:00 am-5:00 pm
1 stop17h 00m
$775
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sat 9/19
8:25 pm-11:30 pm
1 stop20h 05m
Porto
Sat 9/26
6:15 am-6:25 pm
1 stop19h 10m
$782
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/30
9:40 am-7:00 am
1 stop14h 20m
Porto
Tue 10/13
12:15 pm-2:40 pm
2 stops33h 25m
$818
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Tue 8/18
12:20 pm-10:30 am
1 stop15h 10m
Porto
Mon 8/31
5:00 am-3:31 pm
2 stops17h 31m
$891
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sat 9/19
6:30 am-8:30 am
2 stops19h 00m
Porto
Fri 10/9
5:55 am-10:33 pm
2 stops23h 38m
$903
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/2
7:45 am-7:00 am
2 stops16h 15m
Porto
Wed 9/16
12:45 pm-2:26 pm
2 stops32h 41m
$957
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Wed 8/26
6:00 am-3:35 pm
2 stops26h 35m
Lisbon Humberto Delgado
Sat 9/5
5:05 pm-6:25 pm
1 stop32h 20m
$965
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sat 9/19
9:40 am-6:55 am
2 stops14h 15m
Porto
Sat 9/26
12:20 pm-11:05 pm
2 stops17h 45m
$967
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Fri 9/18
11:59 pm-10:20 am
1 stop27h 21m
Porto
Sat 10/3
5:55 am-5:38 pm
2 stops18h 43m
$969
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Tue 5/26
5:40 pm-10:05 pm
1 stop21h 25m
Porto
Fri 6/12
5:55 am-3:40 pm
1 stop16h 45m
$975
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Denver to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Denver with our price prediction graph.
DEN-FAO
DEN-OPO
DEN-LIS
DEN-FNC
DEN-PDL
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 Denver to Portugal
DEN-PT0
DEN-FAO
DEN-OPO
DEN-LIS
DEN-FNC
How far ahead should I book a flight from Denver to Portugal?
The price you pay for your flight from Denver to Portugal may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Denver to Portugal?
Currently, November is the cheapest month in which you can book a flight from Denver to Portugal (average of $410). Flying from Denver to Portugal in June is currently the most expensive (average of $833). 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 Portugal
Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated May 1, 2026.
See what other customers who have flown with Turkish Airlines,United Airlines, andAir Canada from Denver to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Entertainment
7.5
Food
7.5
Boarding
7.3
Overall
7.4
Comfort
7.3
Crew
7.8
Reviews
1 / 20
10.0
ExcellentJim,Apr 2026
SEA - IST
Related info for your journey
Find useful and relevant information for your journey from Denver to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Denver to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Denver to Portugal by cabin class
Find flights from Denver to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Denver and Portugal flights
Browse other Denver and Portugal flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Denver to Portugal flights
Consider these flights traveling from Denver to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 10 airlines flying from Denver to Portugal
Discover the top 10 airlines that operate flights from Denver to Portugal. 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 May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$410 | Average$719 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$559 | Average$981 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$575 | Average$992 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$579 | Average$1,188 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$595 | Average$928 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$599 | Average$764 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$603 | Average$984 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$606 | Average$819 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$630 | Average$778 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$640 | Average$723 | FlexibilityNo cancel fee | On-time77% |