$288+ Cheap flights from Colorado 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 15 — Jul 221
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Colorado 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 Colorado to Portugal
Cheapest
Best
Last-minute
One-way
Cheapest flights from Colorado to PortugalExplore the most affordable flight options available from Colorado to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
Explore the most affordable flight options available from Colorado to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
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.
Sun 11/16:00 am
DEN
- OPO
2 stops18h 40m
American Airlines
Wed 11/118:20 am
OPO
- DEN
2 stops20h 28m
American Airlines
Deal found 6/14![American Airlines logo]()
$730
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.
Sun 11/14:15 pm
DEN
- OPO
1 stop13h 35m
Lufthansa
Wed 11/116:00 am
OPO
- DEN
1 stop16h 35m
Lufthansa
Deal found 6/14![Lufthansa logo]()
$755
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/2411:00 am
ASE
- LIS
2 stops16h 15m
United Airlines
Thu 11/261:00 pm
LIS
- ASE
2 stops36h 26m
United Airlines
Deal found 6/10![United Airlines logo]()
$755
This United Airlines deal was found by Cheapflights users on 6/10. 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 12/69:20 am
COS
- LIS
2 stops17h 55m
United Airlines
Thu 12/105:00 am
LIS
- COS
2 stops23h 40m
United Airlines
Deal found 6/10![United Airlines logo]()
$758
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 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 British Airways deal was found by Cheapflights users on 6/11. 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 12/155:25 pm
DEN
- OPO
1 stop17h 20m
Multiple Airlines
Thu 12/248:40 pm
OPO
- DEN
2 stops32h 04m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$799
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 6/11. 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 11/44:15 pm
DEN
- OPO
1 stop13h 35m
Lufthansa
Sat 11/146:00 am
OPO
- DEN
1 stop16h 35m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$804
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
This oojo deal was found by Cheapflights users on 6/11. 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 9/235:40 pm
DEN
- OPO
1 stop15h 00m
Lufthansa
Fri 10/26:20 am
OPO
- DEN
1 stop15h 00m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$816
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/218:00 pm
DEN
- FAO
1 stop20h 30m
Multiple Airlines
Tue 10/277:05 am
FAO
- DEN
2 stops32h 43m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$817
Best flights from Colorado to PortugalDiscover carefully curated flight deals from Colorado to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
Discover carefully curated flight deals from Colorado to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/2411:00 am
ASE
- LIS
2 stops16h 15m
United Airlines
Thu 11/261:00 pm
LIS
- ASE
2 stops36h 26m
United Airlines
Deal found 6/10![United Airlines logo]()
$755
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.
Wed 9/301:00 pm
DEN
- OPO
2 stops19h 25m
Delta
Tue 10/135:00 am
OPO
- DEN
2 stops23h 40m
Delta
Deal found 6/14![Delta logo]()
$881
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:01 pm
DEN
- FAO
1 stop17h 19m
British Airways
Thu 11/197:40 pm
FAO
- DEN
1 stop26h 30m
British Airways
Deal found 6/14![British Airways logo]()
$924
This KLM deal was found by Cheapflights users on 6/10. 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 9/25:40 pm
DEN
- OPO
1 stop31h 50m
KLM
Wed 9/165:55 am
OPO
- DEN
1 stop16h 45m
KLM
Deal found 6/10![KLM logo]()
$925
This United deal was found by Cheapflights users on 6/10. 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.
Sun 8/211:59 pm
DEN
- FAO
2 stops26h 21m
Multiple Airlines
Tue 8/183:55 pm
FAO
- DEN
1 stop28h 50m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$925
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Fri 10/26:00 am
COS
- LIS
2 stops20h 20m
Air Canada
Mon 10/121:00 pm
LIS
- COS
2 stops35h 55m
Air Canada
Deal found 6/12![Air Canada logo]()
$968
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/263:46 pm
COS
- LIS
2 stops17h 19m
American Airlines
Fri 8/77:20 am
LIS
- COS
2 stops22h 33m
American Airlines
Deal found 6/11![American Airlines logo]()
$1,083
This TAP AIR PORTUGAL 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/41:30 pm
DEN
- FNC
2 stops20h 40m
TAP AIR PORTUGAL
Tue 12/87:50 am
FNC
- DEN
2 stops22h 09m
TAP AIR PORTUGAL
Deal found 6/14![TAP AIR PORTUGAL logo]()
$1,290
This Scandinavian Airlines deal was found by Cheapflights users on 6/12. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:40 am
DEN
- LIS
3 stops26h 05m
Scandinavian Airlines
Wed 8/267:15 am
LIS
- DEN
2 stops23h 43m
Scandinavian Airlines
Deal found 6/12![Scandinavian Airlines logo]()
$1,337
This United Airlines deal was found by Cheapflights users on 6/12. 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 12/69:20 am
COS
- LIS
2 stops17h 55m
United Airlines
Thu 12/105:00 am
LIS
- COS
2 stops23h 40m
United Airlines
Deal found 6/12![United Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 6/11. 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 9/165:40 pm
DEN
- OPO
1 stop21h 20m
Delta
Wed 9/235:55 am
OPO
- DEN
1 stop16h 45m
Delta
Deal found 6/11![Delta logo]()
$924
This KLM deal was found by Cheapflights users on 6/10. 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 6/10![KLM logo]()
$930
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.
Wed 9/309:40 am
DEN
- OPO
1 stop14h 20m
United Airlines
Tue 10/1312:15 pm
OPO
- DEN
2 stops31h 06m
United Airlines
Deal found 6/14![United Airlines logo]()
$863
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:59 pm
DEN
- FAO
2 stops26h 51m
Multiple Airlines
Tue 9/153:55 pm
FAO
- DEN
1 stop28h 50m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$982
This Delta deal was found by Cheapflights users on 6/11. 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 9/145:55 pm
DEN
- OPO
1 stop14h 30m
Delta
Thu 9/245:00 am
OPO
- DEN
2 stops17h 24m
Delta
Deal found 6/11![Delta logo]()
$926
This KLM deal was found by Cheapflights users on 6/10. 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 10/25:56 pm
DEN
- FAO
2 stops20h 09m
KLM
Fri 10/98:50 am
FAO
- DEN
2 stops20h 53m
KLM
Deal found 6/10![KLM logo]()
$949
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/66:00 am
DEN
- OPO
1 stop20h 45m
United Airlines
Thu 9/176:00 am
OPO
- DEN
1 stop14h 35m
United Airlines
Deal found 6/12![United Airlines logo]()
$916
This Delta deal was found by Cheapflights users on 6/10. 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 9/153:15 pm
DEN
- OPO
2 stops17h 10m
Delta
Fri 9/255:00 am
OPO
- DEN
2 stops19h 49m
Delta
Deal found 6/10![Delta logo]()
$931
This Finnair deal was found by Cheapflights users on 6/11. 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.
Sun 7/263:46 pm
COS
- LIS
2 stops24h 39m
Multiple Airlines
Fri 8/76:35 am
LIS
- COS
2 stops23h 18m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,057
This KLM deal was found by Cheapflights users on 6/11. 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 9/145:55 pm
DEN
- OPO
1 stop21h 35m
KLM
Sat 9/266:10 am
OPO
- DEN
1 stop16h 30m
KLM
Deal found 6/11![KLM logo]()
$984
This Delta deal was found by Cheapflights users on 6/10. 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 8/187:19 am
DEN
- OPO
2 stops20h 11m
Delta
Mon 8/315:00 am
OPO
- DEN
2 stops21h 51m
Delta
Deal found 6/10![Delta logo]()
$941
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.
Fri 10/211:57 am
COS
- LIS
2 stops40h 08m
United Airlines
Mon 10/1211:25 am
LIS
- COS
2 stops37h 30m
United Airlines
Deal found 6/14![United Airlines logo]()
$968
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 10/86:35 pm
DEN
- LIS
1 stop21h 30m
Multiple Airlines
Sun 10/186:35 am
LIS
- DEN
2 stops22h 46m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,093
This KLM deal was found by Cheapflights users on 6/11. 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 6/11![KLM logo]()
$1,009
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:35 pm
DEN
- LIS
1 stop21h 35m
British Airways
Wed 7/156:45 pm
LIS
- DEN
1 stop28h 40m
British Airways
Deal found 6/13![British Airways logo]()
$1,412
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:40 pm
DEN
- OPO
1 stop21h 20m
Delta
Wed 7/295:00 am
OPO
- DEN
2 stops25h 27m
Delta
Deal found 6/13![Delta logo]()
$986
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 7/185:50 pm
DEN
- OPO
1 stop32h 55m
United Airlines
Sun 7/2612:15 pm
OPO
- DEN
1 stop29h 18m
United Airlines
Deal found 6/13![United Airlines logo]()
$986
This FlightHub deal was found by Cheapflights users on 6/12. 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
1 stop24h 13m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$1,099
This KLM deal was found by Cheapflights users on 6/10. 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 10/31:15 pm
DEN
- FAO
2 stops21h 50m
KLM
Sun 10/116:55 pm
FAO
- DEN
2 stops29h 40m
KLM
Deal found 6/10![KLM logo]()
$1,009
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.
Wed 10/216:03 am
DEN
- FNC
2 stops23h 22m
Multiple Airlines
Sat 10/319:15 pm
FNC
- DEN
2 stops45h 48m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,132
Last-minute flights from Colorado to PortugalDiscover last-minute flight deals from Colorado to Portugal. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Portugal. Data last updated June 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/1111:59 pm
DEN
- OPO
1 stop23h 56m
United Airlines
Tue 7/2812:15 pm
OPO
- DEN
1 stop29h 18m
United Airlines
Deal found 6/12![United Airlines logo]()
$916
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 Trip.com deal was found by Cheapflights users on 6/10. 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.
Sun 7/1211:25 am
DEN
- OPO
1 stop12h 25m
Multiple Airlines
Tue 7/2812:15 pm
OPO
- DEN
1 stop29h 18m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$882
This Gotogate deal was found by Cheapflights users on 6/10. 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 7/126:05 pm
DEN
- OPO
2 stops29h 55m
Air Canada
Tue 7/2812:15 pm
OPO
- DEN
1 stop13h 40m
Air Canada
Deal found 6/10![Air Canada logo]()
$899
This Delta deal was found by Cheapflights users on 6/12. 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 stops25h 27m
Delta
Deal found 6/12![Delta logo]()
$927
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/134:35 pm
DEN
- FAO
2 stops19h 55m
KLM
Mon 7/208:20 pm
FAO
- DEN
2 stops28h 23m
KLM
Deal found 6/13![KLM logo]()
$985
This Booking.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 Booking.com 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 7/2211:20 am
OPO
- DEN
1 stop30h 13m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$903
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.
Wed 7/156:13 am
DEN
- OPO
2 stops17h 47m
United Airlines
Wed 7/226:00 am
OPO
- DEN
2 stops19h 23m
United Airlines
Deal found 6/14![United Airlines logo]()
$932
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/212:59 pm
DEN
- FAO
2 stops19h 41m
Multiple Airlines
Tue 7/289:10 pm
FAO
- DEN
2 stops25h 20m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$981
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.
Wed 7/295:30 am
COS
- LIS
2 stops20h 50m
United Airlines
Wed 8/512:55 pm
LIS
- COS
2 stops30h 28m
United Airlines
Deal found 6/14![United Airlines logo]()
$974
One-way flights from Colorado to PortugalSearch for one-way flight options from Colorado to Portugal. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
Search for one-way flight options from Colorado to Portugal. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/198:10 pm
DEN
- FAO
3 stops44h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/208:10 pm
DEN
- FAO
3 stops41h 45m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 6/11. 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
- OPO
2 stops21h 00m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/224:40 pm
DEN
- LIS
2 stops23h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/218:10 pm
DEN
- FAO
2 stops38h 40m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/208:10 pm
DEN
- LIS
3 stops59h 25m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$323
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 6/10. 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 7/228:10 pm
DEN
- FAO
3 stops43h 45m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/234:40 pm
DEN
- LIS
2 stops21h 25m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 10/114:40 pm
DEN
- FAO
2 stops23h 35m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/198:10 pm
DEN
- LIS
3 stops42h 55m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$327
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/134:40 pm
DEN
- OPO
2 stops21h 00m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$330
Find flight deals from Colorado to Portugal
Keep the following information in mind while searching for Colorado to Portugal flight deals. Data was last updated June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $730 (American Airlines) |
One-way from | $288 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,335 |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado 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 15, 2026.
Use the filters below to find and compare flights from Colorado to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AspenLisbon
ASE - LIS
ASELIS
Aspen Pitkin County
Tue 11/24
11:00 am-10:15 am
2 stops16h 15m
Lisbon Humberto Delgado
Thu 11/26
1:00 pm-6:26 pm
2 stops36h 26m
$755
Colorado SpringsLisbon
COS - LIS
COSLIS
Colorado Springs
Sun 12/6
9:20 am-10:15 am
2 stops17h 55m
Lisbon Humberto Delgado
Thu 12/10
5:00 am-9:40 pm
2 stops23h 40m
$758
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-12:21 pm
2 stops31h 06m
$863
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/30
1:00 pm-3:25 pm
2 stops19h 25m
Porto
Tue 10/13
5:00 am-9:40 pm
2 stops23h 40m
$881
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Sun 9/6
6:00 am-9:45 am
1 stop20h 45m
Porto
Thu 9/17
6:00 am-1:35 pm
1 stop14h 35m
$916
DenverFaro
DEN - FAO
DENFAO
Denver Intl
Sun 11/15
5:01 pm-5:20 pm
1 stop17h 19m
Faro
Thu 11/19
7:40 pm-3:10 pm
1 stop26h 30m
$924
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/16
5:40 pm-10:00 pm
1 stop21h 20m
Porto
Wed 9/23
5:55 am-3:40 pm
1 stop16h 45m
$924
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Wed 9/2
5:40 pm-8:30 am
1 stop31h 50m
Porto
Wed 9/16
5:55 am-3:40 pm
1 stop16h 45m
$925
DenverFaro
DEN - FAO
DENFAO
Denver Intl
Sun 8/2
11:59 pm-9:20 am
2 stops26h 21m
Faro
Tue 8/18
3:55 pm-1:45 pm
1 stop28h 50m
$925
Quickest round-trip
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Mon 9/14
5:55 pm-3:25 pm
1 stop14h 30m
Porto
Thu 9/24
5:00 am-3:24 pm
2 stops17h 24m
$926
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Colorado to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Colorado with our price prediction graph.
ASE-LIS
DEN-OPO
DEN-FAO
COS-LIS
DEN-FNC
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 Colorado to Portugal
USCO-PT0
ASE-LIS
DEN-OPO
DEN-FAO
COS-LIS
What is the cheapest month to book a flight from Colorado to Portugal?
Currently, March is the cheapest month in which you can book a flight from Colorado to Portugal (average of $450). Flying from Colorado 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 Colorado to Portugal?
To ensure you get the cheapest price possible for a flight from Colorado to Portugal, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Related info for your journey
Find useful and relevant information for your journey from Colorado 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
Return Flight Options
Top destinations
Top regions
Alternative routes for Colorado 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 Colorado to Portugal by cabin class
Find flights from Colorado to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Colorado and Portugal flights
Browse other Colorado and Portugal flight options. Last updated on June 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Portugal
Find the right flight back to Colorado after your stay in Portugal
Colorado to Portugal flights
Consider these flights traveling from Colorado to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 10 airlines flying from Colorado to Portugal
Discover the top 10 airlines that operate flights from Colorado 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 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$498 | Average$663 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$514 | Average$1,160 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$559 | Average$991 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$575 | Average$941 | FlexibilityNo cancel fee | On-timeN/A | |
| 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% |