$249+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Apr 1 — Apr 81
1 adult, Economy
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Find cheap flights from Colorado to Portugal with Cheapflights
1. Tell us where you want to go
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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 March 2, 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 March 2, 2026.
This Finnair deal was found by Cheapflights users on 2/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:39 pm
COS
- LIS
2 stops26h 46m
Multiple Airlines
Mon 4/276:35 am
LIS
- COS
2 stops23h 57m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$528
This Finnair deal was found by Cheapflights users on 2/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:13 pm
COS
- LIS
2 stops23h 12m
Multiple Airlines
Wed 5/64:35 pm
LIS
- COS
2 stops37h 57m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$575
This Iberia deal was found by Cheapflights users on 2/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:40 pm
DEN
- LIS
1 stop16h 15m
Multiple Airlines
Tue 5/56:35 am
LIS
- DEN
2 stops23h 10m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$583
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Mon 11/24:20 pm
DEN
- LIS
1 stop14h 00m
United Airlines
Thu 11/55:00 am
LIS
- DEN
1 stop18h 00m
United Airlines
Deal found 2/27![United Airlines logo]()
$584
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Mon 3/23:36 pm
DEN
- LIS
1 stop11h 39m
United Airlines
Thu 3/125:00 am
LIS
- DEN
2 stops23h 06m
United Airlines
Deal found 2/27![United Airlines logo]()
$585
This Iberia deal was found by Cheapflights users on 2/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:40 pm
DEN
- OPO
1 stop18h 55m
Multiple Airlines
Tue 4/288:40 pm
OPO
- DEN
2 stops33h 05m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$588
This Finnair deal was found by Cheapflights users on 2/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:40 pm
DEN
- LIS
1 stop21h 30m
Multiple Airlines
Mon 5/44:35 pm
LIS
- DEN
2 stops34h 20m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$588
This KLM deal was found by Cheapflights users on 2/27. 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 3/210:50 am
DEN
- LIS
2 stops14h 10m
KLM
Thu 3/125:00 am
LIS
- DEN
2 stops18h 17m
KLM
Deal found 2/27![KLM logo]()
$592
This Delta deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 4/146:40 am
DEN
- LIS
1 stop18h 20m
Delta
Fri 4/245:35 am
LIS
- DEN
2 stops22h 11m
Delta
Deal found 3/1![Delta logo]()
$593
This Delta deal was found by Cheapflights users on 2/27. 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.
Mon 4/133:30 pm
DEN
- OPO
2 stops23h 30m
Delta
Mon 4/274:20 pm
OPO
- DEN
2 stops34h 22m
Delta
Deal found 2/27![Delta logo]()
$595
This oojo deal was found by Cheapflights users on 2/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:40 pm
DEN
- LIS
1 stop21h 20m
British Airways
Fri 4/177:20 am
LIS
- DEN
1 stop16h 10m
British Airways
Deal found 2/27![British Airways logo]()
$595
This Delta deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 4/1311:45 am
DEN
- LIS
2 stops19h 50m
Delta
Tue 4/285:00 am
LIS
- DEN
2 stops19h 55m
Delta
Deal found 3/1![Delta logo]()
$596
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 March 2, 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 March 2, 2026.
This American Airlines deal was found by Cheapflights users on 2/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:22 pm
COS
- LIS
2 stops16h 28m
American Airlines
Wed 4/228:55 am
LIS
- COS
2 stops21h 37m
American Airlines
Deal found 2/28![American Airlines logo]()
$528
This Finnair deal was found by Cheapflights users on 2/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:39 pm
COS
- LIS
2 stops26h 46m
Multiple Airlines
Mon 4/276:35 am
LIS
- COS
2 stops23h 57m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$528
This Delta deal was found by Cheapflights users on 2/27. 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.
Mon 4/133:30 pm
DEN
- OPO
2 stops23h 30m
Delta
Mon 4/274:20 pm
OPO
- DEN
2 stops34h 22m
Delta
Deal found 2/27![Delta logo]()
$595
This Finnair deal was found by Cheapflights users on 2/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:28 am
DEN
- LIS
2 stops22h 22m
Finnair
Mon 5/44:35 pm
LIS
- DEN
2 stops34h 20m
Finnair
Deal found 2/27![Finnair logo]()
$612
This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:36 am
DEN
- FNC
2 stops21h 49m
Iberia
Wed 5/61:35 pm
FNC
- DEN
2 stops41h 10m
Iberia
Deal found 2/27![Iberia logo]()
$612
This British Airways deal was found by Cheapflights users on 2/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:40 pm
DEN
- OPO
1 stop18h 25m
British Airways
Mon 4/279:25 pm
OPO
- DEN
1 stop26h 05m
British Airways
Deal found 2/27![British Airways logo]()
$628
This Turkish Airlines deal was found by Cheapflights users on 2/28. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:25 pm
DEN
- LIS
1 stop36h 10m
Turkish Airlines
Sat 5/235:05 pm
LIS
- DEN
1 stop32h 20m
Turkish Airlines
Deal found 2/28![Turkish Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Mon 4/137:17 pm
DEN
- FAO
2 stops35h 33m
United Airlines
Mon 4/203:25 pm
FAO
- DEN
2 stops50h 06m
United Airlines
Deal found 2/27![United Airlines logo]()
$757
This KLM deal was found by Cheapflights users on 2/26. 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.
Sun 4/511:35 am
DEN
- FNC
2 stops38h 35m
KLM
Wed 4/1510:25 am
FNC
- DEN
2 stops36h 11m
KLM
Deal found 2/26![KLM logo]()
$766
This Scandinavian Airlines deal was found by Cheapflights users on 2/26. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:40 am
DEN
- LIS
3 stops26h 05m
Scandinavian Airlines
Thu 5/77:00 am
LIS
- DEN
2 stops22h 40m
Scandinavian Airlines
Deal found 2/26![Scandinavian Airlines logo]()
$958
This BusinessClass deal was found by Cheapflights users on 2/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:45 am
COS
- LIS
2 stops19h 15m
Lufthansa
Sat 7/411:25 am
LIS
- COS
2 stops17h 41m
Lufthansa
Deal found 2/26![Lufthansa logo]()
$1,058
This Finnair deal was found by Cheapflights users on 2/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:13 pm
COS
- LIS
2 stops23h 12m
Multiple Airlines
Wed 5/64:35 pm
LIS
- COS
2 stops37h 57m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$575
This Delta deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 4/1311:45 am
DEN
- LIS
2 stops19h 50m
Delta
Tue 4/285:00 am
LIS
- DEN
2 stops19h 55m
Delta
Deal found 3/1![Delta logo]()
$596
This FlightHub deal was found by Cheapflights users on 2/27. 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.
Sat 4/251:35 pm
DEN
- PDL
2 stops19h 00m
TAP AIR PORTUGAL
Sat 5/26:30 am
PDL
- DEN
2 stops21h 43m
TAP AIR PORTUGAL
Deal found 2/27![TAP AIR PORTUGAL logo]()
$1,207
This British Airways deal was found by Cheapflights users on 2/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:40 pm
DEN
- LIS
1 stop21h 25m
British Airways
Tue 5/56:45 pm
LIS
- DEN
1 stop28h 45m
British Airways
Deal found 2/27![British Airways logo]()
$650
This Delta deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 5/56:40 am
DEN
- LIS
2 stops19h 10m
Delta
Fri 5/155:00 am
LIS
- DEN
2 stops19h 14m
Delta
Deal found 3/1![Delta logo]()
$635
This Finnair deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 5/1010:28 am
DEN
- LIS
2 stops22h 22m
Finnair
Wed 5/206:35 am
LIS
- DEN
2 stops23h 10m
Finnair
Deal found 3/1![Finnair logo]()
$701
This British Airways deal was found by Cheapflights users on 2/26. 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.
Mon 4/66:40 pm
DEN
- FNC
1 stop16h 55m
British Airways
Thu 4/161:15 pm
FNC
- DEN
1 stop34h 15m
British Airways
Deal found 2/26![British Airways logo]()
$655
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Sun 4/126:00 am
COS
- LIS
2 stops33h 45m
United Airlines
Sun 4/196:15 am
LIS
- COS
2 stops22h 42m
United Airlines
Deal found 2/26![United Airlines logo]()
$767
This British Airways deal was found by Cheapflights users on 2/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:40 pm
DEN
- LIS
1 stop16h 05m
British Airways
Sun 5/36:50 pm
LIS
- DEN
1 stop28h 40m
British Airways
Deal found 2/27![British Airways logo]()
$693
This Finnair deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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.
Tue 3/3112:33 pm
DEN
- LIS
2 stops20h 17m
Finnair
Sun 4/124:35 pm
LIS
- DEN
2 stops34h 20m
Finnair
Deal found 3/1![Finnair logo]()
$839
This KLM deal was found by Cheapflights users on 2/28. 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 5/125:40 pm
DEN
- OPO
1 stop21h 25m
KLM
Sun 5/245:55 am
OPO
- DEN
1 stop16h 45m
KLM
Deal found 2/28![KLM logo]()
$930
This oojo deal was found by Cheapflights users on 2/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:31 pm
DEN
- PIX
2 stops27h 29m
Multiple Airlines
Mon 4/205:50 pm
PIX
- DEN
2 stops50h 49m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$877
This Delta deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 5/1212:35 pm
DEN
- OPO
2 stops19h 55m
Delta
Sun 5/245:55 am
OPO
- DEN
1 stop16h 45m
Delta
Deal found 3/1![Delta logo]()
$839
This British Airways deal was found by Cheapflights users on 2/26. 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.
Fri 4/36:40 pm
DEN
- FNC
1 stop34h 55m
British Airways
Sat 4/181:10 pm
FNC
- DEN
1 stop34h 20m
British Airways
Deal found 2/26![British Airways logo]()
$765
This KLM deal was found by Cheapflights users on 2/26. 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.
Mon 5/256:21 pm
DEN
- OPO
2 stops16h 49m
KLM
Fri 6/55:55 am
OPO
- DEN
1 stop16h 45m
KLM
Deal found 2/26![KLM logo]()
$942
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Thu 7/236:00 am
DEN
- PDL
2 stops20h 20m
United Airlines
Fri 7/319:35 am
PDL
- DEN
2 stops37h 09m
United Airlines
Deal found 2/28![United Airlines logo]()
$1,035
This oojo deal was found by Cheapflights users on 2/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:59 pm
DEN
- PDL
1 stop24h 46m
Multiple Airlines
Sat 5/26:05 pm
PDL
- DEN
1 stop34h 08m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$951
This Scandinavian Airlines deal was found by Cheapflights users on 2/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:40 am
DEN
- LIS
3 stops26h 05m
Scandinavian Airlines
Sun 4/267:00 am
LIS
- DEN
2 stops22h 48m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$1,153
This KLM deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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.
Sun 5/2411:30 am
DEN
- OPO
2 stops16h 10m
KLM
Tue 6/95:00 am
OPO
- DEN
2 stops17h 31m
KLM
Deal found 3/1![KLM logo]()
$965
Last-minute flights from Colorado to PortugalDiscover last-minute flight deals from Colorado to Portugal. Data last updated March 2, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Portugal. Data last updated March 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Fri 2/2712:46 pm
DEN
- LIS
1 stop12h 24m
United Airlines
Tue 3/35:00 am
LIS
- DEN
2 stops21h 48m
United Airlines
Deal found 2/26![United Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Fri 2/271:40 pm
DEN
- LIS
1 stop11h 30m
United Airlines
Fri 3/66:10 am
LIS
- DEN
2 stops20h 26m
United Airlines
Deal found 2/26![United Airlines logo]()
$626
This American Airlines deal was found by Cheapflights users on 2/26. 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.
Fri 2/277:05 am
DEN
- LIS
1 stop18h 45m
American Airlines
Fri 3/611:05 am
LIS
- DEN
1 stop17h 31m
American Airlines
Deal found 2/26![American Airlines logo]()
$627
This Delta deal was found by Cheapflights users on 2/26. 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.
Fri 2/277:10 am
DEN
- LIS
2 stops20h 25m
Delta
Fri 3/65:00 am
LIS
- DEN
2 stops24h 48m
Delta
Deal found 2/26![Delta logo]()
$628
This Delta deal was found by Cheapflights users on 2/27. 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.
Sun 3/16:00 am
DEN
- LIS
1 stop19h 55m
Delta
Tue 3/1010:00 am
LIS
- DEN
1 stop17h 46m
Delta
Deal found 2/27![Delta logo]()
$597
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Mon 3/23:36 pm
DEN
- LIS
1 stop11h 39m
United Airlines
Thu 3/125:00 am
LIS
- DEN
2 stops23h 06m
United Airlines
Deal found 2/27![United Airlines logo]()
$585
This KLM deal was found by Cheapflights users on 2/27. 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 3/210:50 am
DEN
- LIS
2 stops14h 10m
KLM
Thu 3/125:00 am
LIS
- DEN
2 stops18h 17m
KLM
Deal found 2/27![KLM logo]()
$592
This KLM deal was found by Cheapflights users on 2/26. 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.
Tue 3/36:00 am
DEN
- OPO
2 stops21h 30m
KLM
Tue 3/105:00 am
OPO
- DEN
2 stops20h 51m
KLM
Deal found 2/26![KLM logo]()
$661
This KLM deal was found by Cheapflights users on 2/27. 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.
Wed 3/411:10 am
DEN
- LIS
2 stops16h 25m
KLM
Wed 3/115:00 am
LIS
- DEN
2 stops18h 17m
KLM
Deal found 2/27![KLM logo]()
$598
This FlightHub deal was found by Cheapflights users on 2/27. 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 3/108:20 pm
DEN
- OPO
1 stop31h 35m
Turkish Airlines
Wed 4/2910:45 am
OPO
- DEN
1 stop38h 40m
Turkish Airlines
Deal found 2/27![Turkish Airlines logo]()
$649
This Cheapflightsfares deal was found by Cheapflights users on 2/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:10 pm
DEN
- LIS
1 stop12h 55m
British Airways
Tue 4/711:05 am
LIS
- DEN
1 stop14h 05m
British Airways
Deal found 2/28![British Airways logo]()
$629
This United Airlines deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 3/247:45 am
DEN
- LIS
2 stops20h 30m
United Airlines
Thu 4/212:20 pm
LIS
- DEN
2 stops16h 50m
United Airlines
Deal found 3/1![United Airlines logo]()
$601
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 March 2, 2026.
Search for one-way flight options from Colorado to Portugal. Find affordable one-way fares based on user searches. Data last updated March 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:40 pm
DEN
- FAO
2 stops20h 05m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$249
This KLM deal was found by Cheapflights users on 2/26. 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.
Sun 5/311:55 pm
DEN
- FAO
2 stops36h 30m
KLM
Deal found 2/26![KLM logo]()
$256
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Tue 5/510:14 am
DEN
- FAO
2 stops18h 06m
United Airlines
Deal found 2/28![United Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 5/114:40 pm
DEN
- FAO
3 stops46h 50m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$261
This KLM deal was found by Cheapflights users on 2/27. 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 3/912:51 pm
DEN
- FAO
2 stops24h 04m
KLM
Deal found 2/27![KLM logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 2/26. 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.
Tue 5/54:40 pm
DEN
- OPO
2 stops31h 10m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:10 am
DEN
- LIS
3 stops31h 55m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:40 pm
DEN
- OPO
3 stops46h 10m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 5/36:10 am
DEN
- FAO
3 stops34h 05m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:00 pm
DEN
- OPO
3 stops59h 40m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:40 pm
DEN
- FAO
3 stops23h 50m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” 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 5/104:40 pm
DEN
- FAO
2 stops21h 20m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$286
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 March 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $528 (Finnair) |
One-way from | $249 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $748 |
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 March 2, 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
Colorado SpringsLisbon
COS - LIS
COSLIS
Colorado Springs
Wed 4/15
12:22 pm-11:50 am
2 stops16h 28m
Lisbon Humberto Delgado
Wed 4/22
8:55 am-11:32 pm
2 stops21h 37m
$528
Colorado SpringsLisbon
COS - LIS
COSLIS
Colorado Springs
Sat 4/18
1:39 pm-11:25 pm
2 stops26h 46m
Lisbon Humberto Delgado
Mon 4/27
6:35 am-11:32 pm
2 stops23h 57m
$528
Colorado SpringsLisbon
COS - LIS
COSLIS
Colorado Springs
Wed 4/29
5:13 pm-11:25 pm
2 stops23h 12m
Lisbon Humberto Delgado
Wed 5/6
4:35 pm-11:32 pm
2 stops37h 57m
$575
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Mon 4/13
3:30 pm-10:00 pm
2 stops23h 30m
Porto
Mon 4/27
4:20 pm-7:42 pm
2 stops34h 22m
$595
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Mon 4/13
11:45 am-2:35 pm
2 stops19h 50m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-5:55 pm
2 stops19h 55m
$596
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Mon 4/27
10:28 am-3:50 pm
2 stops22h 22m
Lisbon Humberto Delgado
Mon 5/4
4:35 pm-7:55 pm
2 stops34h 20m
$612
DenverFunchal
DEN - FNC
DENFNC
Denver Intl
Wed 4/29
7:36 am-12:25 pm
2 stops21h 49m
Funchal Madeira
Wed 5/6
1:35 pm-11:45 pm
2 stops41h 10m
$612
DenverPorto
DEN - OPO
DENOPO
Denver Intl
Mon 4/13
6:40 pm-8:05 pm
1 stop18h 25m
Porto
Mon 4/27
9:25 pm-4:30 pm
1 stop26h 05m
$628
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Tue 5/5
6:40 am-8:50 am
2 stops19h 10m
Lisbon Humberto Delgado
Fri 5/15
5:00 am-5:14 pm
2 stops19h 14m
$635
DenverLisbon
DEN - LIS
DENLIS
Denver Intl
Thu 4/23
6:40 pm-11:05 pm
1 stop21h 25m
Lisbon Humberto Delgado
Tue 5/5
6:45 pm-4:30 pm
1 stop28h 45m
$650
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.
DEN-FAO
DEN-OPO
DEN-LIS
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
DEN-FAO
DEN-OPO
DEN-LIS
COS-LIS
What is the cheapest month to book a flight from Colorado to Portugal?
Currently, November is the cheapest month in which you can book a flight from Colorado to Portugal (average of $504). Flying from Colorado to Portugal in June is currently the most expensive (average of $857). 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.
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.
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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 March 2, 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 March 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$458 | Average$668 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$514 | Average$1,104 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$555 | Average$881 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$559 | Average$1,076 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$574 | Average$700 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$575 | Average$968 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$595 | Average$866 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$599 | Average$686 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$603 | Average$984 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$630 | Average$917 | FlexibilityNo cancel fee | On-time71% |