$413+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Aug 29 — Sep 51
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 30, 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 30, 2026.
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:16 pm
GEG
- LIS
2 stops19h 39m
British Airways
Mon 11/96:35 pm
LIS
- GEG
2 stops27h 47m
British Airways
Deal found 7/28![British Airways logo]()
$475
This Expedia deal was found by Cheapflights users on 7/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am
BOI
- LIS
2 stops20h 50m
Multiple Airlines
Tue 11/175:00 am
LIS
- BOI
2 stops23h 32m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:30 pm
JAC
- LIS
2 stops33h 40m
United Airlines
Wed 12/911:20 am
LIS
- JAC
2 stops40h 42m
United Airlines
Deal found 7/29![United Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:00 am
GEG
- LIS
2 stops21h 40m
United Airlines
Thu 12/1010:55 am
LIS
- GEG
2 stops42h 14m
United Airlines
Deal found 7/28![United Airlines logo]()
$730
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 12/69:40 am
BOI
- LIS
2 stops15h 30m
United Airlines
Thu 12/1010:55 am
LIS
- BOI
2 stops41h 21m
United Airlines
Deal found 7/28![United Airlines logo]()
$731
This Air France deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:00 am
GEG
- LIS
2 stops20h 25m
Multiple Airlines
Thu 12/105:00 am
LIS
- GEG
2 stops22h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$735
This Expedia deal was found by Cheapflights users on 7/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:51 pm
GEG
- LIS
2 stops43h 14m
Iberia
Mon 11/912:30 pm
LIS
- GEG
2 stops40h 10m
Iberia
Deal found 7/28![Iberia logo]()
$740
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:25 am
BOI
- LIS
2 stops19h 55m
Multiple Airlines
Tue 11/1012:50 pm
LIS
- BOI
2 stops29h 40m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$749
This Air Canada deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 am
BOI
- LIS
3 stops20h 50m
Air Canada
Tue 11/1712:50 pm
LIS
- BOI
3 stops31h 55m
Air Canada
Deal found 7/28![Air Canada logo]()
$766
This Orbitz deal was found by Cheapflights users on 7/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
BOI
- LIS
2 stops28h 05m
Iberia
Mon 11/98:20 am
LIS
- BOI
2 stops36h 25m
Iberia
Deal found 7/26![Iberia logo]()
$768
This Expedia deal was found by Cheapflights users on 7/27. 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 10/2812:19 pm
BOI
- LIS
2 stops21h 06m
Finnair
Sat 11/76:30 am
LIS
- BOI
2 stops23h 12m
Finnair
Deal found 7/27![Finnair logo]()
$771
This KLM deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:25 am
JAC
- LIS
2 stops17h 35m
KLM
Wed 12/911:30 am
LIS
- JAC
2 stops35h 57m
KLM
Deal found 7/30![KLM logo]()
$780
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 30, 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 30, 2026.
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:30 pm
JAC
- LIS
2 stops33h 40m
United Airlines
Wed 12/911:20 am
LIS
- JAC
2 stops40h 42m
United Airlines
Deal found 7/29![United Airlines logo]()
$726
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:30 am
BOI
- LIS
3 stops17h 35m
Multiple Airlines
Tue 11/1012:50 pm
LIS
- BOI
2 stops29h 40m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:25 am
BOI
- LIS
2 stops23h 30m
Delta
Sat 10/245:35 am
LIS
- BOI
2 stops23h 33m
Delta
Deal found 7/25![Delta logo]()
$911
This KLM deal was found by Cheapflights users on 7/27. 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 9/2311:10 am
GEG
- FAO
2 stops24h 20m
KLM
Tue 9/298:35 pm
FAO
- GEG
2 stops26h 39m
KLM
Deal found 7/27![KLM logo]()
$938
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/213:19 pm
BOI
- LIS
2 stops19h 41m
American Airlines
Fri 8/2811:05 am
LIS
- BOI
2 stops18h 06m
American Airlines
Deal found 7/24![American Airlines logo]()
$961
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 12/69:40 am
BOI
- LIS
2 stops15h 30m
United Airlines
Thu 12/1010:55 am
LIS
- BOI
2 stops41h 21m
United Airlines
Deal found 7/28![United Airlines logo]()
$731
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 1/165:22 pm
BOI
- LIS
2 stops31h 48m
United Airlines
Sat 1/2311:20 am
LIS
- BOI
2 stops38h 56m
United Airlines
Deal found 7/26![United Airlines logo]()
$781
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:50 am
JAC
- LIS
2 stops17h 30m
Multiple Airlines
Sat 10/245:05 am
LIS
- JAC
2 stops20h 36m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$904
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:30 pm
GEG
- LIS
2 stops17h 20m
Delta
Sat 10/245:35 am
LIS
- GEG
2 stops23h 47m
Delta
Deal found 7/25![Delta logo]()
$911
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:59 pm
GEG
- LIS
2 stops32h 51m
Delta
Sat 10/3112:25 pm
LIS
- GEG
2 stops38h 20m
Delta
Deal found 7/25![Delta logo]()
$925
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 10/178:10 am
JAC
- LIS
2 stops42h 10m
United Airlines
Sun 10/2510:50 am
LIS
- JAC
2 stops40h 07m
United Airlines
Deal found 7/26![United Airlines logo]()
$864
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:17 pm
BOI
- LIS
2 stops22h 33m
Delta
Sat 9/265:00 am
LIS
- BOI
2 stops19h 19m
Delta
Deal found 7/27![Delta logo]()
$1,003
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/155:00 am
GEG
- LIS
2 stops20h 20m
United Airlines
Tue 9/2211:25 am
LIS
- GEG
2 stops41h 49m
United Airlines
Deal found 7/28![United Airlines logo]()
$933
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:05 pm
GEG
- LIS
2 stops19h 45m
Delta
Fri 9/45:00 am
LIS
- GEG
2 stops24h 16m
Delta
Deal found 7/29![Delta logo]()
$1,008
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:00 am
GEG
- LIS
2 stops21h 30m
United Airlines
Tue 9/2211:25 am
LIS
- GEG
2 stops41h 49m
United Airlines
Deal found 7/25![United Airlines logo]()
$934
This Booking.com deal was found by Cheapflights users on 7/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:34 pm
GEG
- FAO
2 stops19h 36m
Multiple Airlines
Mon 9/2811:10 am
FAO
- GEG
2 stops35h 44m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,287
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 9/85:00 am
GEG
- LIS
2 stops21h 30m
United Airlines
Fri 9/1811:25 am
LIS
- GEG
2 stops41h 49m
United Airlines
Deal found 7/26![United Airlines logo]()
$934
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:30 am
BOI
- LIS
2 stops18h 50m
United Airlines
Sat 9/1911:25 am
LIS
- BOI
2 stops42h 15m
United Airlines
Deal found 7/29![United Airlines logo]()
$989
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/154:21 pm
GEG
- LIS
2 stops33h 59m
Multiple Airlines
Tue 9/2210:15 am
LIS
- GEG
1 stop20h 23m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,585
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/291:04 pm
GEG
- LIS
2 stops36h 16m
United Airlines
Sat 9/1211:25 am
LIS
- GEG
2 stops41h 49m
United Airlines
Deal found 7/26![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
JAC
- LIS
2 stops20h 30m
United Airlines
Mon 9/2110:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/30![United Airlines logo]()
$1,009
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/87:00 am
GEG
- LIS
1 stop20h 45m
Multiple Airlines
Fri 9/189:55 am
LIS
- GEG
1 stop20h 43m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,661
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 9/103:54 pm
GEG
- FAO
2 stops33h 56m
United Airlines
Thu 9/1711:40 am
FAO
- GEG
2 stops32h 55m
United Airlines
Deal found 7/27![United Airlines logo]()
$1,033
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:21 pm
GEG
- LIS
1 stop35h 24m
Multiple Airlines
Sat 10/3110:30 am
LIS
- GEG
1 stop20h 05m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,879
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/311:45 pm
JAC
- LIS
2 stops18h 45m
United Airlines
Thu 9/1710:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/3110:40 am
JAC
- LIS
2 stops21h 50m
United Airlines
Fri 9/1810:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:15 am
JAC
- LIS
2 stops44h 50m
United Airlines
Thu 9/1011:25 am
LIS
- JAC
2 stops40h 43m
United Airlines
Deal found 7/29![United Airlines logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:00 am
GEG
- LIS
2 stops20h 20m
United Airlines
Sun 9/271:00 pm
LIS
- GEG
2 stops39h 49m
United Airlines
Deal found 7/29![United Airlines logo]()
$1,113
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated July 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/213:19 pm
BOI
- LIS
2 stops19h 41m
American Airlines
Fri 8/2811:05 am
LIS
- BOI
2 stops18h 06m
American Airlines
Deal found 7/24![American Airlines logo]()
$961
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:40 pm
GEG
- LIS
2 stops33h 35m
Delta
Sat 8/2911:55 am
LIS
- GEG
2 stops37h 05m
Delta
Deal found 7/25![Delta logo]()
$1,008
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/291:04 pm
GEG
- LIS
2 stops36h 16m
United Airlines
Sat 9/1211:25 am
LIS
- GEG
2 stops41h 49m
United Airlines
Deal found 7/26![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/304:25 pm
JAC
- LIS
2 stops22h 10m
United Airlines
Thu 9/171:00 pm
LIS
- JAC
2 stops33h 28m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/304:25 pm
JAC
- LIS
2 stops22h 10m
United Airlines
Fri 9/187:25 am
LIS
- JAC
2 stops20h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,155
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/304:25 pm
JAC
- LIS
2 stops22h 10m
United Airlines
Mon 9/2111:25 am
LIS
- JAC
2 stops30h 52m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,206
This FlightHub deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:15 am
JAC
- LIS
2 stops32h 00m
Lufthansa
Fri 9/187:25 am
LIS
- JAC
2 stops42h 26m
Lufthansa
Deal found 7/26![Lufthansa logo]()
$954
This KAYAK deal was found by Cheapflights users on 7/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:52 pm
JAC
- LIS
2 stops25h 43m
Lufthansa
Mon 9/212:30 pm
LIS
- JAC
2 stops37h 10m
Lufthansa
Deal found 7/26![Lufthansa logo]()
$976
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/3110:40 am
JAC
- LIS
2 stops21h 50m
United Airlines
Fri 9/1810:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/312:52 pm
JAC
- LIS
2 stops17h 38m
United Airlines
Sat 9/1911:25 am
LIS
- JAC
2 stops32h 24m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,144
This KAYAK deal was found by Cheapflights users on 7/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:52 pm
JAC
- LIS
2 stops24h 23m
Lufthansa
Sun 9/205:05 am
LIS
- JAC
2 stops20h 46m
Lufthansa
Deal found 7/26![Lufthansa logo]()
$1,145
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/3112:13 pm
JAC
- LIS
2 stops20h 17m
United Airlines
Mon 9/2110:25 am
LIS
- JAC
1 stop17h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,165
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 30, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:14 am
BOI
- LIS
3 stops52h 41m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:21 pm
GEG
- LIS
3 stops42h 14m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$440
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Thu 8/2012:24 pm
BOI
- LIS
3 stops47h 21m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:00 am
GEG
- LIS
2 stops21h 30m
United Airlines
Deal found 7/29![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/134:25 pm
JAC
- LIS
2 stops23h 20m
United Airlines
Deal found 7/26![United Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 10/25:30 pm
BOI
- LIS
2 stops58h 35m
United Airlines
Deal found 7/24![United Airlines logo]()
$483
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/12:53 pm
BOI
- LIS
2 stops19h 57m
Delta
Deal found 7/24![Delta logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:44 pm
GEG
- LIS
3 stops33h 11m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 9/34:17 pm
BOI
- LIS
3 stops42h 18m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$577
This BusinessClass deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:41 am
GEG
- LIS
2 stops24h 14m
British Airways
Deal found 7/29![British Airways logo]()
$6,727
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 30, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $715 (Expedia) |
One-way from | $413 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
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 30, 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
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Sat 12/5
3:30 pm-8:10 am
2 stops33h 40m
Lisbon Humberto Delgado
Wed 12/9
11:20 am-9:02 pm
2 stops40h 42m
$726
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Sun 12/6
9:40 am-8:10 am
2 stops15h 30m
Lisbon Humberto Delgado
Thu 12/10
10:55 am-9:16 pm
2 stops41h 21m
$731
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Tue 10/20
10:30 am-11:05 am
3 stops17h 35m
Lisbon Humberto Delgado
Tue 11/10
12:50 pm-11:30 am
2 stops29h 40m
$758
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Sat 1/16
5:22 pm-8:10 am
2 stops31h 48m
Lisbon Humberto Delgado
Sat 1/23
11:20 am-7:16 pm
2 stops38h 56m
$781
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Sat 10/17
8:10 am-9:20 am
2 stops42h 10m
Lisbon Humberto Delgado
Sun 10/25
10:50 am-8:57 pm
2 stops40h 07m
$864
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Sat 10/17
7:50 am-8:20 am
2 stops17h 30m
Lisbon Humberto Delgado
Sat 10/24
5:05 am-6:41 pm
2 stops20h 36m
$904
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Thu 10/15
8:25 am-2:55 pm
2 stops23h 30m
Lisbon Humberto Delgado
Sat 10/24
5:35 am-10:08 pm
2 stops23h 33m
$911
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Sat 10/17
4:30 pm-5:50 pm
2 stops17h 20m
Lisbon Humberto Delgado
Sat 10/24
5:35 am-9:22 pm
2 stops23h 47m
$911
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Thu 10/1
3:59 pm-8:50 am
2 stops32h 51m
Lisbon Humberto Delgado
Sat 10/31
12:25 pm-7:45 pm
2 stops38h 20m
$925
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 9/15
5:00 am-9:20 am
2 stops20h 20m
Lisbon Humberto Delgado
Tue 9/22
11:25 am-9:14 pm
2 stops41h 49m
$933
Showing 1-10 of 38 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.
BOI-LIS
GEG-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
BOI-LIS
GEG-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 30, 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 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$467 | Average$937 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$549 | Average$827 | FlexibilityNo cancel fee | On-timeN/A |