$330+ Cheap flights from Idaho to Portugal
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Aug 13 — Aug 201
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Portugal with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Idaho to PortugalExplore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2026.
Explore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2026.
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 11/45:00 am
BOI
- LIS
2 stops18h 55m
United Airlines
Wed 11/1111:20 am
LIS
- BOI
2 stops31h 21m
United Airlines
Deal found 7/10![United Airlines logo]()
$725
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 12/64:05 pm
BOI
- LIS
2 stops33h 05m
United Airlines
Wed 12/911:20 am
LIS
- BOI
2 stops43h 39m
United Airlines
Deal found 7/9![United Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Tue 12/296:25 am
BOI
- LIS
2 stops20h 40m
United Airlines
Tue 2/95:00 am
LIS
- BOI
2 stops25h 59m
United Airlines
Deal found 7/13![United Airlines logo]()
$729
This Orbitz deal was found by Cheapflights users on 7/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:00 am
GEG
- LIS
2 stops29h 05m
Iberia
Mon 11/28:45 pm
LIS
- GEG
2 stops32h 10m
Iberia
Deal found 7/11![Iberia logo]()
$743
This Air Canada deal was found by Cheapflights users on 7/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am
BOI
- LIS
2 stops17h 25m
Multiple Airlines
Wed 11/1111:20 am
LIS
- BOI
3 stops29h 18m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$753
This Air Canada deal was found by Cheapflights users on 7/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am
BOI
- LIS
3 stops19h 25m
Air Canada
Wed 11/1111:20 am
LIS
- BOI
3 stops29h 18m
Air Canada
Deal found 7/10![Air Canada logo]()
$758
This FlightHub deal was found by Cheapflights users on 7/12. 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.
Sat 10/312:40 pm
JAC
- LIS
2 stops50h 50m
Lufthansa
Sat 11/75:00 am
LIS
- JAC
2 stops23h 02m
Lufthansa
Deal found 7/12![Lufthansa logo]()
$775
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Sat 10/314:25 pm
JAC
- LIS
2 stops35h 40m
United Airlines
Sat 11/711:20 am
LIS
- JAC
2 stops40h 42m
United Airlines
Deal found 7/10![United Airlines logo]()
$776
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/304:25 pm
JAC
- LIS
2 stops58h 55m
United Airlines
Sat 11/711:20 am
LIS
- JAC
2 stops40h 42m
United Airlines
Deal found 7/14![United Airlines logo]()
$785
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Tue 12/295:00 am
GEG
- LIS
2 stops21h 05m
United Airlines
Fri 1/85:00 am
LIS
- GEG
2 stops24h 09m
United Airlines
Deal found 7/12![United Airlines logo]()
$786
This FlightHub deal was found by Cheapflights users on 7/12. 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.
Tue 10/66:25 am
BOI
- LIS
2 stops21h 40m
Air Canada
Tue 10/1311:25 am
LIS
- BOI
2 stops41h 10m
Air Canada
Deal found 7/12![Air Canada logo]()
$814
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Thu 11/56:30 am
BOI
- LIS
2 stops18h 40m
United Airlines
Sat 11/1411:20 am
LIS
- BOI
2 stops37h 34m
United Airlines
Deal found 7/14![United Airlines logo]()
$826
Best flights from Idaho to PortugalDiscover carefully curated flight deals from Idaho to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 14, 2026.
Discover carefully curated flight deals from Idaho to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 14, 2026.
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 12/64:05 pm
BOI
- LIS
2 stops33h 05m
United Airlines
Wed 12/911:20 am
LIS
- BOI
2 stops43h 39m
United Airlines
Deal found 7/9![United Airlines logo]()
$726
This FlightHub deal was found by Cheapflights users on 7/12. 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.
Sat 10/312:40 pm
JAC
- LIS
2 stops50h 50m
Lufthansa
Sat 11/75:00 am
LIS
- JAC
2 stops23h 02m
Lufthansa
Deal found 7/12![Lufthansa logo]()
$775
This Delta deal was found by Cheapflights users on 7/14. 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.
Thu 10/158:22 am
BOI
- LIS
2 stops19h 53m
Delta
Sat 10/245:00 am
LIS
- BOI
2 stops20h 33m
Delta
Deal found 7/14![Delta logo]()
$885
This KLM deal was found by Cheapflights users on 7/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:10 am
GEG
- FAO
2 stops38h 00m
KLM
Wed 10/148:20 pm
FAO
- GEG
2 stops30h 09m
KLM
Deal found 7/14![KLM logo]()
$933
This FlightHub deal was found by Cheapflights users on 7/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:04 pm
GEG
- LIS
2 stops36h 16m
Multiple Airlines
Mon 9/142:30 pm
LIS
- GEG
2 stops38h 44m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$948
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Tue 9/84:30 pm
JAC
- LIS
2 stops18h 55m
American Airlines
Wed 9/3011:05 am
LIS
- JAC
2 stops31h 02m
American Airlines
Deal found 7/14![American Airlines logo]()
$1,007
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:25 pm
JAC
- LIS
2 stops35h 40m
United Airlines
Sat 11/75:00 am
LIS
- JAC
2 stops36h 03m
United Airlines
Deal found 7/9![United Airlines logo]()
$785
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Tue 12/295:00 am
GEG
- LIS
2 stops21h 05m
United Airlines
Fri 1/85:00 am
LIS
- GEG
2 stops24h 09m
United Airlines
Deal found 7/13![United Airlines logo]()
$786
This Delta deal was found by Cheapflights users on 7/11. 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.
Sat 10/1711:18 am
GEG
- LIS
2 stops22h 32m
Delta
Sat 10/245:00 am
LIS
- GEG
2 stops24h 11m
Delta
Deal found 7/11![Delta logo]()
$885
This Delta deal was found by Cheapflights users on 7/14. 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.
Fri 10/1611:18 am
GEG
- LIS
2 stops15h 57m
Delta
Sat 10/245:00 am
LIS
- GEG
2 stops24h 11m
Delta
Deal found 7/14![Delta logo]()
$885
This Air Canada deal was found by Cheapflights users on 7/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2911:30 pm
GEG
- LIS
3 stops23h 25m
Multiple Airlines
Fri 1/811:20 am
LIS
- GEG
2 stops32h 04m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$989
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Thu 11/56:30 am
BOI
- LIS
2 stops18h 40m
United Airlines
Sat 11/1411:20 am
LIS
- BOI
2 stops37h 34m
United Airlines
Deal found 7/14![United Airlines logo]()
$826
This KLM deal was found by Cheapflights users on 7/13. 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.
Wed 9/21:10 pm
JAC
- LIS
2 stops18h 25m
KLM
Thu 9/107:45 pm
LIS
- JAC
2 stops30h 36m
KLM
Deal found 7/13![KLM logo]()
$1,004
This American Airlines deal was found by Cheapflights users on 7/11. 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.
Wed 9/23:38 pm
JAC
- LIS
2 stops17h 02m
American Airlines
Thu 9/1011:05 am
LIS
- JAC
2 stops32h 02m
American Airlines
Deal found 7/11![American Airlines logo]()
$1,035
This Delta deal was found by Cheapflights users on 7/12. 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.
Wed 9/21:06 pm
BOI
- LIS
2 stops22h 39m
Delta
Tue 9/85:00 am
LIS
- BOI
2 stops19h 19m
Delta
Deal found 7/12![Delta logo]()
$943
This Air Canada deal was found by Cheapflights users on 7/12. 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.
Tue 10/66:25 am
BOI
- LIS
2 stops19h 55m
Multiple Airlines
Tue 10/1311:25 am
LIS
- BOI
3 stops29h 09m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Tue 8/185:00 am
GEG
- LIS
2 stops20h 20m
United Airlines
Tue 9/110:25 am
LIS
- GEG
2 stops18h 21m
United Airlines
Deal found 7/12![United Airlines logo]()
$903
This Delta deal was found by Cheapflights users on 7/13. 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.
Tue 9/1512:14 pm
BOI
- LIS
2 stops22h 36m
Delta
Sat 9/265:00 am
LIS
- BOI
2 stops19h 19m
Delta
Deal found 7/13![Delta logo]()
$998
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:15 am
BOI
- LIS
2 stops20h 05m
United Airlines
Tue 9/111:25 am
LIS
- BOI
2 stops31h 03m
United Airlines
Deal found 7/11![United Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 7/12. 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.
Tue 8/1112:23 pm
BOI
- LIS
2 stops22h 27m
Delta
Mon 8/175:00 am
LIS
- BOI
2 stops24h 30m
Delta
Deal found 7/12![Delta logo]()
$1,008
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/18:00 am
JAC
- LIS
2 stops18h 20m
United Airlines
Wed 9/1610:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/10![United Airlines logo]()
$948
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Sat 9/122:02 pm
GEG
- LIS
1 stop16h 48m
Multiple Airlines
Sat 9/261:10 pm
LIS
- GEG
2 stops18h 49m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,370
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Tue 9/18:00 am
JAC
- LIS
2 stops18h 20m
United Airlines
Mon 9/2111:25 am
LIS
- JAC
3 stops37h 24m
United Airlines
Deal found 7/14![United Airlines logo]()
$988
This Kiwi.com deal was found by Cheapflights users on 7/14. 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 10/47:00 am
GEG
- LIS
1 stop20h 45m
Multiple Airlines
Sun 10/189:15 pm
LIS
- GEG
2 stops34h 20m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,387
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Tue 9/86:30 am
BOI
- LIS
2 stops19h 50m
United Airlines
Sat 9/1911:25 am
LIS
- BOI
2 stops41h 12m
United Airlines
Deal found 7/13![United Airlines logo]()
$988
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:05 pm
BOI
- LIS
2 stops30h 15m
United Airlines
Mon 9/2111:25 am
LIS
- BOI
2 stops31h 01m
United Airlines
Deal found 7/11![United Airlines logo]()
$989
This United Airlines deal was found by Cheapflights users on 7/14. 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 9/276:00 am
GEG
- FAO
2 stops24h 30m
United Airlines
Wed 10/143:25 pm
FAO
- GEG
3 stops61h 24m
United Airlines
Deal found 7/14![United Airlines logo]()
$1,733
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated July 14, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated July 14, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/12. 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.
Sat 7/255:30 am
BOI
- LIS
2 stops22h 45m
Delta
Tue 8/45:35 am
LIS
- BOI
2 stops23h 55m
Delta
Deal found 7/12![Delta logo]()
$1,206
This Delta deal was found by Cheapflights users on 7/10. 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.
Sun 7/263:29 pm
BOI
- LIS
2 stops19h 21m
Delta
Tue 8/49:50 am
LIS
- BOI
2 stops19h 40m
Delta
Deal found 7/10![Delta logo]()
$1,146
This Delta deal was found by Cheapflights users on 7/12. 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.
Tue 8/1112:23 pm
BOI
- LIS
2 stops22h 27m
Delta
Mon 8/175:00 am
LIS
- BOI
2 stops24h 30m
Delta
Deal found 7/12![Delta logo]()
$1,008
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Tue 8/185:00 am
GEG
- LIS
2 stops20h 20m
United Airlines
Tue 9/110:25 am
LIS
- GEG
2 stops18h 21m
United Airlines
Deal found 7/12![United Airlines logo]()
$903
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Mon 8/247:15 am
JAC
- LIS
2 stops20h 15m
United Airlines
Tue 9/110:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/10![United Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Mon 8/245:00 am
GEG
- LIS
2 stops20h 20m
United Airlines
Mon 8/3111:25 am
LIS
- GEG
2 stops41h 21m
United Airlines
Deal found 7/10![United Airlines logo]()
$988
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:15 am
BOI
- LIS
2 stops20h 05m
United Airlines
Tue 9/111:25 am
LIS
- BOI
2 stops31h 03m
United Airlines
Deal found 7/11![United Airlines logo]()
$928
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Tue 8/257:05 am
BOI
- LIS
1 stop21h 40m
Multiple Airlines
Tue 9/110:15 am
LIS
- BOI
1 stop19h 45m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$1,362
This KLM deal was found by Cheapflights users on 7/13. 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.
Thu 8/2711:09 am
GEG
- LIS
2 stops19h 26m
KLM
Thu 9/35:00 am
LIS
- GEG
2 stops18h 19m
KLM
Deal found 7/13![KLM logo]()
$1,013
This Air Canada deal was found by Cheapflights users on 7/14. 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.
Fri 8/2810:31 am
BOI
- LIS
3 stops17h 34m
Multiple Airlines
Fri 9/411:25 am
LIS
- BOI
2 stops29h 09m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,426
This FlightHub deal was found by Cheapflights users on 7/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:04 pm
GEG
- LIS
2 stops36h 16m
Multiple Airlines
Mon 9/142:30 pm
LIS
- GEG
2 stops38h 44m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$948
This Air France deal was found by Cheapflights users on 7/14. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:09 am
GEG
- LIS
2 stops19h 46m
Multiple Airlines
Sun 9/65:00 am
LIS
- GEG
2 stops19h 27m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,068
One-way flights from Idaho to PortugalSearch for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated July 14, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated July 14, 2026.
This Orbitz deal was found by Cheapflights users on 7/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:40 pm
GEG
- LIS
2 stops37h 25m
Air Canada
Deal found 7/13![Air Canada logo]()
$330
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Mon 11/27:00 am
JAC
- LIS
2 stops18h 10m
United Airlines
Deal found 7/10![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 7/10. 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.
Sun 11/11:05 pm
JAC
- LIS
2 stops21h 25m
Delta
Deal found 7/10![Delta logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/12. 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 10/171:05 pm
GEG
- LIS
2 stops36h 15m
United Airlines
Deal found 7/12![United Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Sat 10/314:25 pm
JAC
- LIS
2 stops33h 45m
United Airlines
Deal found 7/10![United Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Fri 10/304:25 pm
JAC
- LIS
2 stops58h 55m
United Airlines
Deal found 7/10![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Thu 10/297:00 am
JAC
- LIS
2 stops19h 10m
United Airlines
Deal found 7/10![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 7/13. 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 11/215:00 am
GEG
- LIS
2 stops44h 20m
United Airlines
Deal found 7/13![United Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 7/13. 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.
Sat 10/177:43 pm
GEG
- LIS
3 stops35h 57m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Wed 8/265:00 am
GEG
- FAO
2 stops20h 50m
United Airlines
Deal found 7/12![United Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Tue 9/18:00 am
JAC
- LIS
2 stops18h 20m
United Airlines
Deal found 7/14![United Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Mon 8/317:00 am
JAC
- LIS
2 stops32h 45m
United Airlines
Deal found 7/14![United Airlines logo]()
$471
Find flight deals from Idaho to Portugal
Keep the following information in mind while searching for Idaho to Portugal flight deals. Data was last updated July 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $725 (United Airlines) |
One-way from | $330 (Orbitz) |
Popular in | December |
Cheapest in | November |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho 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 July 14, 2026.
Use the filters below to find and compare flights from Idaho to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Sun 12/6
4:05 pm-8:10 am
2 stops33h 05m
Lisbon Humberto Delgado
Wed 12/9
11:20 am-11:59 pm
2 stops43h 39m
$726
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Sat 10/31
2:40 pm-11:30 pm
2 stops50h 50m
Lisbon Humberto Delgado
Sat 11/7
5:00 am-9:02 pm
2 stops23h 02m
$775
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Sat 10/31
4:25 pm-10:05 am
2 stops35h 40m
Lisbon Humberto Delgado
Sat 11/7
5:00 am-10:03 am
2 stops36h 03m
$785
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 12/29
5:00 am-10:05 am
2 stops21h 05m
Lisbon Humberto Delgado
Fri 1/8
5:00 am-9:09 pm
2 stops24h 09m
$786
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Thu 11/5
6:30 am-8:10 am
2 stops18h 40m
Lisbon Humberto Delgado
Sat 11/14
11:20 am-5:54 pm
2 stops37h 34m
$826
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Thu 10/15
8:22 am-11:15 am
2 stops19h 53m
Lisbon Humberto Delgado
Sat 10/24
5:00 am-6:33 pm
2 stops20h 33m
$885
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Sat 10/17
11:18 am-5:50 pm
2 stops22h 32m
Lisbon Humberto Delgado
Sat 10/24
5:00 am-9:11 pm
2 stops24h 11m
$885
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Fri 10/16
11:18 am-11:15 am
2 stops15h 57m
Lisbon Humberto Delgado
Sat 10/24
5:00 am-9:11 pm
2 stops24h 11m
$885
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 8/18
5:00 am-9:20 am
2 stops20h 20m
Lisbon Humberto Delgado
Tue 9/1
10:25 am-8:46 pm
2 stops18h 21m
$903
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Tue 8/25
6:15 am-9:20 am
2 stops20h 05m
Lisbon Humberto Delgado
Tue 9/1
11:25 am-11:28 am
2 stops31h 03m
$928
Showing 1-10 of 48 resultsSorted by cheapest first
Best time to book a flight from Idaho to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Idaho with our price prediction graph.
GEG-LIS
BOI-LIS
JAC-LIS
GEG-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 Idaho to Portugal
USID-PT0
GEG-LIS
BOI-LIS
JAC-LIS
GEG-FAO
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Idaho 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 Idaho to Portugal by cabin class
Find flights from Idaho to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Portugal flights
Browse other Idaho and Portugal flight options. Last updated on July 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Portugal flights
Consider these flights traveling from Idaho to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 2 airlines flying from Idaho to Portugal
Discover the top 2 airlines that operate flights from Idaho 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 July 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$467 | Average$885 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$549 | Average$827 | FlexibilityNo cancel fee | On-timeN/A |