$294+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Jul 18 — Jul 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Denver to Portugal 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 Denver to Portugal
Cheapest
Best
Last-minute
One-way
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 June 18, 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 June 18, 2026.
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:13 am
DEN
- OPO
2 stops16h 27m
American Airlines
Wed 11/118:20 am
OPO
- DEN
2 stops20h 28m
American Airlines
Deal found 6/17![American Airlines logo]()
$730
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:15 pm
DEN
- OPO
1 stop13h 35m
Lufthansa
Wed 11/116:00 am
OPO
- DEN
1 stop16h 35m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$747
This United Airlines deal was found by Cheapflights users on 6/14. 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 11/111:50 pm
DEN
- OPO
2 stops26h 40m
United Airlines
Wed 11/116:00 am
OPO
- DEN
1 stop16h 35m
United Airlines
Deal found 6/14![United Airlines logo]()
$772
This United Airlines deal was found by Cheapflights users on 6/16. 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 11/311:30 am
DEN
- OPO
1 stop15h 00m
United Airlines
Tue 11/1012:35 pm
OPO
- DEN
2 stops25h 07m
United Airlines
Deal found 6/16![United Airlines logo]()
$777
This Delta deal was found by Cheapflights users on 6/17. 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.
Sun 11/16:30 am
DEN
- OPO
1 stop19h 35m
Delta
Wed 11/115:00 am
OPO
- DEN
2 stops24h 43m
Delta
Deal found 6/17![Delta logo]()
$779
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Fri 11/138:04 am
DEN
- OPO
2 stops16h 36m
American Airlines
Fri 11/278:20 am
OPO
- DEN
2 stops21h 41m
American Airlines
Deal found 6/14![American Airlines logo]()
$780
This Gotogate deal was found by Cheapflights users on 6/14. 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 11/134:15 pm
DEN
- OPO
1 stop13h 35m
Multiple Airlines
Fri 11/276:00 am
OPO
- DEN
2 stops18h 18m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$801
This oojo deal was found by Cheapflights users on 6/14. 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.
Fri 11/134:15 pm
DEN
- OPO
1 stop13h 35m
Lufthansa
Fri 11/276:00 am
OPO
- DEN
1 stop16h 35m
Lufthansa
Deal found 6/14![Lufthansa logo]()
$804
This Iberia deal was found by Cheapflights users on 6/17. 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 Iberia 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
Multiple Airlines
Wed 11/48:45 pm
LIS
- DEN
2 stops19h 46m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$807
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:01 pm
DEN
- LIS
1 stop17h 39m
British Airways
Wed 11/187:05 am
LIS
- DEN
1 stop15h 05m
British Airways
Deal found 6/17![British Airways logo]()
$810
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:40 pm
DEN
- OPO
1 stop15h 05m
Lufthansa
Thu 10/811:05 am
OPO
- DEN
1 stop34h 15m
Lufthansa
Deal found 6/17![Lufthansa logo]()
$812
This oojo deal was found by Cheapflights users on 6/14. 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.
Sat 11/147:30 pm
DEN
- OPO
1 stop36h 55m
Turkish Airlines
Sun 11/2210:55 am
OPO
- DEN
1 stop37h 30m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$814
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 June 18, 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 June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:25 am
DEN
- OPO
1 stop12h 35m
United Airlines
Tue 10/136:00 am
OPO
- DEN
1 stop16h 40m
United Airlines
Deal found 6/18![United Airlines logo]()
$819
This Justfly.com deal was found by Cheapflights users on 6/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:45 am
DEN
- OPO
2 stops16h 15m
Air Canada
Tue 10/1312:15 pm
OPO
- DEN
2 stops40h 29m
Air Canada
Deal found 6/18![Air Canada logo]()
$822
This Turkish Airlines deal was found by Cheapflights users on 6/18. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:25 pm
DEN
- LIS
1 stop36h 10m
Turkish Airlines
Wed 9/304:45 pm
LIS
- DEN
1 stop32h 40m
Turkish Airlines
Deal found 6/18![Turkish Airlines logo]()
$853
This British Airways deal was found by Cheapflights users on 6/15. 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 11/258:13 am
DEN
- FNC
2 stops24h 57m
British Airways
Wed 12/93:10 pm
FNC
- DEN
2 stops38h 55m
British Airways
Deal found 6/15![British Airways logo]()
$875
This KLM deal was found by Cheapflights users on 6/16. 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.
Wed 11/1111:59 pm
DEN
- FNC
2 stops34h 11m
KLM
Wed 11/1810:25 am
FNC
- DEN
2 stops36h 31m
KLM
Deal found 6/16![KLM logo]()
$930
This Finnair deal was found by Cheapflights users on 6/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:01 pm
DEN
- LIS
2 stops39h 24m
Finnair
Mon 11/304:10 pm
LIS
- DEN
2 stops32h 39m
Finnair
Deal found 6/17![Finnair logo]()
$931
This Delta deal was found by Cheapflights users on 6/15. 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 8/55:40 pm
DEN
- OPO
1 stop14h 45m
Delta
Fri 8/149:25 am
OPO
- DEN
2 stops21h 33m
Delta
Deal found 6/15![Delta logo]()
$933
This United deal was found by Cheapflights users on 6/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:59 pm
DEN
- OPO
1 stop26h 46m
Multiple Airlines
Sun 10/1811:20 am
OPO
- DEN
2 stops30h 02m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$934
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/18. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:45 pm
DEN
- PDL
2 stops53h 00m
TAP AIR PORTUGAL
Tue 9/226:30 am
PDL
- DEN
2 stops22h 45m
TAP AIR PORTUGAL
Deal found 6/18![TAP AIR PORTUGAL logo]()
$1,297
This FlightHub deal was found by Cheapflights users on 6/16. 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.
Wed 11/115:25 pm
DEN
- FNC
2 stops60h 00m
Lufthansa
Wed 11/183:10 pm
FNC
- DEN
1 stop31h 25m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$1,300
This United Airlines deal was found by Cheapflights users on 6/16. 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 8/48:00 am
DEN
- OPO
2 stops16h 00m
United Airlines
Mon 8/1012:10 pm
OPO
- DEN
2 stops33h 21m
United Airlines
Deal found 6/16![United Airlines logo]()
$952
This Turkish Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 10/86:00 am
DEN
- OPO
2 stops44h 45m
Turkish Airlines
Sat 10/174:40 pm
OPO
- DEN
1 stop32h 45m
Turkish Airlines
Deal found 6/16![Turkish Airlines logo]()
$982
This FlightHub deal was found by Cheapflights users on 6/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:40 am
DEN
- OPO
1 stop14h 20m
Multiple Airlines
Fri 9/116:20 am
OPO
- DEN
1 stop14h 25m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 6/15. 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 9/183:15 pm
DEN
- OPO
2 stops17h 10m
Delta
Sat 10/35:00 am
OPO
- DEN
2 stops24h 35m
Delta
Deal found 6/15![Delta logo]()
$1,001
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:10 pm
DEN
- FNC
2 stops27h 55m
United Airlines
Wed 7/299:40 am
FNC
- DEN
2 stops28h 07m
United Airlines
Deal found 6/18![United Airlines logo]()
$959
This British Airways deal was found by Cheapflights users on 6/15. 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 7/196:35 pm
DEN
- LIS
1 stop21h 30m
British Airways
Sun 7/267:20 am
LIS
- DEN
1 stop16h 05m
British Airways
Deal found 6/15![British Airways logo]()
$1,064
This KLM deal was found by Cheapflights users on 6/15. 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 9/194:30 pm
DEN
- FAO
2 stops18h 35m
KLM
Sun 10/49:20 am
FAO
- DEN
2 stops20h 11m
KLM
Deal found 6/15![KLM logo]()
$1,105
This Delta deal was found by Cheapflights users on 6/18. 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.
Wed 9/308:55 am
DEN
- LIS
2 stops19h 20m
Delta
Sat 10/105:00 am
LIS
- DEN
2 stops19h 35m
Delta
Deal found 6/18![Delta logo]()
$1,041
This Orbitz deal was found by Cheapflights users on 6/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:30 pm
DEN
- FNC
2 stops58h 30m
Multiple Airlines
Wed 12/93:10 pm
FNC
- DEN
2 stops33h 08m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,062
This Finnair deal was found by Cheapflights users on 6/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:39 pm
DEN
- LIS
2 stops27h 46m
Finnair
Sun 10/186:35 am
LIS
- DEN
2 stops22h 46m
Finnair
Deal found 6/14![Finnair logo]()
$1,177
This United Airlines deal was found by Cheapflights users on 6/13. 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 7/117:10 pm
DEN
- OPO
1 stop31h 35m
United Airlines
Sun 7/2612:15 pm
OPO
- DEN
1 stop29h 18m
United Airlines
Deal found 6/13![United Airlines logo]()
$986
This KLM deal was found by Cheapflights users on 6/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:45 pm
DEN
- FAO
2 stops32h 45m
KLM
Sun 10/116:55 pm
FAO
- DEN
2 stops28h 01m
KLM
Deal found 6/17![KLM logo]()
$1,105
This FlightHub deal was found by Cheapflights users on 6/15. 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.
Fri 11/66:00 pm
DEN
- PDL
1 stop30h 20m
Multiple Airlines
Fri 11/135:50 pm
PDL
- DEN
2 stops26h 44m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,063
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/17. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:00 am
DEN
- PDL
2 stops33h 45m
TAP AIR PORTUGAL
Sun 11/87:25 pm
PDL
- DEN
2 stops32h 02m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$1,309
This Delta deal was found by Cheapflights users on 6/16. 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 8/46:40 am
DEN
- OPO
2 stops18h 50m
Delta
Sun 8/96:30 am
OPO
- DEN
2 stops25h 06m
Delta
Deal found 6/16![Delta logo]()
$1,097
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:40 am
DEN
- FAO
1 stop19h 10m
United Airlines
Wed 7/223:25 pm
FAO
- DEN
2 stops39h 13m
United Airlines
Deal found 6/17![United Airlines logo]()
$999
This KLM deal was found by Cheapflights users on 6/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:45 pm
DEN
- FNC
2 stops41h 50m
KLM
Fri 10/27:25 pm
FNC
- DEN
2 stops28h 47m
KLM
Deal found 6/18![KLM logo]()
$1,114
This Turkish Airlines deal was found by Cheapflights users on 6/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:25 pm
DEN
- LIS
1 stop30h 25m
Turkish Airlines
Sat 7/185:05 pm
LIS
- DEN
1 stop32h 20m
Turkish Airlines
Deal found 6/17![Turkish Airlines logo]()
$1,302
This Finnair deal was found by Cheapflights users on 6/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:27 pm
DEN
- FAO
2 stops21h 38m
Multiple Airlines
Tue 11/33:45 pm
FAO
- DEN
2 stops37h 19m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,087
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:10 pm
DEN
- OPO
2 stops28h 50m
United Airlines
Fri 9/116:00 am
OPO
- DEN
2 stops23h 18m
United Airlines
Deal found 6/18![United Airlines logo]()
$1,000
Last-minute flights from Denver to PortugalDiscover last-minute flight deals from Denver to Portugal. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Portugal. Data last updated June 18, 2026 and is based on user searches.
This Travelocity deal was found by Cheapflights users on 6/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:20 pm
DEN
- OPO
2 stops26h 30m
Multiple Airlines
Wed 7/226:20 am
OPO
- DEN
1 stop14h 25m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$920
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Sat 7/118:53 pm
DEN
- OPO
2 stops26h 57m
Air Canada
Tue 7/218:40 am
OPO
- DEN
2 stops18h 42m
Air Canada
Deal found 6/14![Air Canada logo]()
$924
This Orbitz deal was found by Cheapflights users on 6/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:20 pm
DEN
- OPO
2 stops26h 30m
Multiple Airlines
Tue 7/216:20 am
OPO
- DEN
2 stops25h 10m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$930
This Delta deal was found by Cheapflights users on 6/14. 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.
Sun 7/1212:10 pm
DEN
- OPO
1 stop15h 15m
Delta
Wed 7/295:00 am
OPO
- DEN
2 stops19h 27m
Delta
Deal found 6/14![Delta logo]()
$927
This Delta deal was found by Cheapflights users on 6/15. 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 7/135:40 pm
DEN
- OPO
1 stop21h 35m
Delta
Thu 7/305:00 am
OPO
- DEN
2 stops24h 44m
Delta
Deal found 6/15![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 6/15. 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 7/139:39 am
DEN
- OPO
2 stops17h 51m
Delta
Wed 7/295:00 am
OPO
- DEN
2 stops19h 27m
Delta
Deal found 6/15![Delta logo]()
$931
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/139:40 am
DEN
- OPO
1 stop14h 20m
United Airlines
Wed 7/2912:35 pm
OPO
- DEN
1 stop17h 51m
United Airlines
Deal found 6/15![United Airlines logo]()
$933
This Gotogate deal was found by Cheapflights users on 6/15. 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.
Wed 7/159:40 am
DEN
- OPO
1 stop14h 20m
Multiple Airlines
Wed 7/226:20 am
OPO
- DEN
1 stop14h 25m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$901
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
DEN
- OPO
2 stops18h 00m
United Airlines
Wed 7/226:00 am
OPO
- DEN
2 stops24h 48m
United Airlines
Deal found 6/17![United Airlines logo]()
$932
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:40 pm
DEN
- LIS
1 stop21h 40m
Icelandair
Sun 7/1910:20 pm
LIS
- DEN
1 stop21h 20m
Icelandair
Deal found 6/17![Icelandair logo]()
$974
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:10 pm
DEN
- FNC
2 stops27h 55m
United Airlines
Wed 7/299:40 am
FNC
- DEN
2 stops28h 07m
United Airlines
Deal found 6/18![United Airlines logo]()
$959
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:35 pm
DEN
- LIS
1 stop21h 40m
British Airways
Wed 8/57:20 am
LIS
- DEN
1 stop16h 10m
British Airways
Deal found 6/16![British Airways logo]()
$971
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 June 18, 2026.
Search for one-way flight options from Denver to Portugal. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/194:40 pm
DEN
- LIS
3 stops45h 40m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$294
This Trip.com deal was found by Cheapflights users on 6/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:40 pm
DEN
- OPO
2 stops21h 15m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Sun 10/184:40 pm
DEN
- LIS
2 stops21h 25m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 11/73:40 pm
DEN
- LIS
2 stops22h 15m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 12/43:40 pm
DEN
- LIS
2 stops34h 25m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 10/264:40 pm
DEN
- LIS
2 stops23h 25m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 9/134:40 pm
DEN
- LIS
2 stops21h 25m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 6/16. 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
- FAO
2 stops21h 35m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 12/33:40 pm
DEN
- LIS
2 stops23h 30m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$328
This Mytrip deal was found by Cheapflights users on 6/15. 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 8/188:10 pm
DEN
- OPO
3 stops28h 50m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 11/133:40 pm
DEN
- OPO
2 stops24h 50m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 8/84:40 pm
DEN
- FAO
2 stops16h 15m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$332
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 June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $730 (American Airlines) |
One-way from | $294 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,330 |
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 June 18, 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
Wed 9/30
11:25 am-7:00 am
1 stop12h 35m
Porto
Tue 10/13
6:00 am-3:40 pm
1 stop16h 40m
$819
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/30
7:45 am-7:00 am
2 stops16h 15m
Porto
Tue 10/13
12:15 pm-9:44 pm
2 stops40h 29m
$822
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Tue 9/15
8:25 pm-3:35 pm
1 stop36h 10m
Lisbon Humberto Delgado
Wed 9/30
4:45 pm-6:25 pm
1 stop32h 40m
$853
DenverFunchal
DEN - FNC
DENFNC
Denver Intl
Wed 11/25
8:13 am-4:10 pm
2 stops24h 57m
Funchal Madeira
Wed 12/9
3:10 pm-11:05 pm
2 stops38h 55m
$875
DenverFunchal
DEN - FNC
DENFNC
Denver Intl
Wed 11/11
11:59 pm-5:10 pm
2 stops34h 11m
Funchal Madeira
Wed 11/18
10:25 am-3:56 pm
2 stops36h 31m
$930
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Wed 11/25
5:01 pm-3:25 pm
2 stops39h 24m
Lisbon Humberto Delgado
Mon 11/30
4:10 pm-5:49 pm
2 stops32h 39m
$931
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 8/5
5:40 pm-3:25 pm
1 stop14h 45m
Porto
Fri 8/14
9:25 am-11:58 pm
2 stops21h 33m
$933
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sat 10/10
11:59 pm-9:45 am
1 stop26h 46m
Porto
Sun 10/18
11:20 am-10:22 am
2 stops30h 02m
$934
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Tue 8/4
8:00 am-7:00 am
2 stops16h 00m
Porto
Mon 8/10
12:10 pm-2:31 pm
2 stops33h 21m
$952
DenverFunchal
DEN - FNC
DENFNC
Denver Intl
Mon 7/20
9:10 pm-8:05 am
2 stops27h 55m
Funchal Madeira
Wed 7/29
9:40 am-6:47 am
2 stops28h 07m
$959
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-OPO
DEN-FNC
DEN-LIS
DEN-TER
DEN-FAO
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-OPO
DEN-FNC
DEN-LIS
DEN-TER
What is the cheapest month to book a flight from Denver to Portugal?
Currently, March is the cheapest month in which you can book a flight from Denver to Portugal (average of $450). Flying from Denver to Portugal in June is currently the most expensive (average of $1,029). 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.
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 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 18, 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
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - IST
Entertainment
7.5
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - IST
Entertainment
7.5
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - IST
Entertainment
7.5
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - IST
Entertainment
7.5
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - IST
Entertainment
7.5
Crew
7.8
Boarding
7.3
Overall
7.4
Comfort
7.3
Food
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
MIA - 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.
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
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
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 June 18, 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 June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$498 | Average$663 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$559 | Average$991 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$575 | Average$941 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$578 | Average$1,233 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$596 | Average$981 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$622 | Average$869 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$625 | Average$800 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$630 | Average$776 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$635 | Average$743 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$651 | Average$1,179 | FlexibilityNo cancel fee | On-time77% |