$458+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
May 4 — May 111
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Portugal with Cheapflights
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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 April 4, 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 April 4, 2026.
This United Airlines deal was found by Cheapflights users on 4/1. 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 12/295:00 am
GEG
- LIS
2 stops19h 10m
United Airlines
Fri 1/85:00 am
LIS
- GEG
2 stops26h 38m
United Airlines
Deal found 4/1![United Airlines logo]()
$719
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/23:44 pm
BOI
- LIS
2 stops19h 06m
Delta
Sat 5/95:00 am
LIS
- BOI
2 stops24h 58m
Delta
Deal found 4/2![Delta logo]()
$720
This Air Canada deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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.
Sun 12/62:43 pm
BOI
- LIS
2 stops35h 37m
Air Canada
Wed 12/911:20 am
LIS
- BOI
2 stops38h 56m
Air Canada
Deal found 4/3![Air Canada logo]()
$731
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sun 12/62:11 pm
BOI
- LIS
2 stops37h 04m
United Airlines
Wed 12/911:20 am
LIS
- BOI
2 stops36h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 11/74:25 pm
JAC
- LIS
2 stops48h 05m
United Airlines
Tue 11/106:10 am
LIS
- JAC
2 stops21h 52m
United Airlines
Deal found 3/31![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sun 12/65:00 am
GEG
- LIS
2 stops19h 10m
United Airlines
Thu 12/1010:15 am
LIS
- GEG
2 stops21h 23m
United Airlines
Deal found 3/30![United Airlines logo]()
$742
This Air France deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/203:44 pm
BOI
- LIS
2 stops19h 06m
Multiple Airlines
Tue 5/55:00 am
LIS
- BOI
2 stops22h 29m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 4/277:00 am
GEG
- LIS
2 stops22h 40m
United Airlines
Fri 5/811:25 am
LIS
- GEG
2 stops41h 51m
United Airlines
Deal found 4/1![United Airlines logo]()
$779
This FlightHub deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/181:46 pm
GEG
- LIS
2 stops37h 14m
Air Canada
Tue 4/2811:25 am
LIS
- GEG
2 stops39h 26m
Air Canada
Deal found 4/3![Air Canada logo]()
$780
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/214:15 pm
BOI
- LIS
2 stops18h 40m
Multiple Airlines
Tue 5/56:35 am
LIS
- BOI
2 stops23h 03m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$781
This Finnair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/201:29 pm
BOI
- LIS
2 stops26h 56m
Finnair
Tue 5/56:35 am
LIS
- BOI
2 stops23h 03m
Finnair
Deal found 3/31![Finnair logo]()
$782
This Air France deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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.
Wed 4/1512:52 pm
BOI
- LIS
2 stops19h 03m
Multiple Airlines
Tue 4/215:00 am
LIS
- BOI
2 stops22h 00m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$785
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 April 4, 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 April 4, 2026.
This Air France deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/203:44 pm
BOI
- LIS
2 stops19h 06m
Multiple Airlines
Tue 5/55:00 am
LIS
- BOI
2 stops22h 29m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 4/277:00 am
GEG
- LIS
2 stops22h 40m
United Airlines
Fri 5/811:25 am
LIS
- GEG
2 stops41h 51m
United Airlines
Deal found 4/1![United Airlines logo]()
$779
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/217:20 am
JAC
- LIS
2 stops32h 30m
KLM
Mon 5/47:45 pm
LIS
- JAC
2 stops30h 16m
KLM
Deal found 3/31![KLM logo]()
$789
This Delta deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/148:59 am
BOI
- LIS
2 stops22h 36m
Delta
Tue 4/285:00 am
LIS
- BOI
2 stops23h 56m
Delta
Deal found 4/3![Delta logo]()
$789
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:44 am
BOI
- LIS
2 stops33h 41m
Iberia
Sun 10/48:45 pm
LIS
- BOI
2 stops55h 20m
Iberia
Deal found 3/30![Iberia logo]()
$1,009
This KAYAK deal was found by Cheapflights users on 3/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:08 pm
GEG
- FAO
2 stops33h 42m
Lufthansa
Mon 8/3111:40 am
FAO
- GEG
2 stops41h 24m
Lufthansa
Deal found 3/30![Lufthansa logo]()
$1,014
This Ovago deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:06 pm
JAC
- LIS
2 stops33h 39m
Scandinavian Airlines
Mon 6/1512:15 pm
LIS
- JAC
2 stops40h 05m
Scandinavian Airlines
Deal found 4/4![Scandinavian Airlines logo]()
$1,171
This Air France deal was found by Cheapflights users on 4/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
GEG
- LIS
2 stops20h 45m
Multiple Airlines
Tue 4/285:00 am
LIS
- GEG
2 stops21h 23m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$785
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/143:44 pm
BOI
- LIS
2 stops20h 01m
KLM
Tue 4/285:00 am
LIS
- BOI
2 stops22h 00m
KLM
Deal found 3/31![KLM logo]()
$789
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/144:01 pm
GEG
- LIS
2 stops22h 44m
United Airlines
Fri 4/2412:20 pm
LIS
- GEG
3 stops34h 55m
United Airlines
Deal found 4/1![United Airlines logo]()
$820
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/271:00 pm
JAC
- LIS
2 stops18h 55m
Delta
Sat 5/95:00 am
LIS
- JAC
2 stops22h 15m
Delta
Deal found 3/31![Delta logo]()
$835
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/143:30 pm
GEG
- LIS
2 stops19h 15m
KLM
Tue 4/285:00 am
LIS
- GEG
2 stops19h 30m
KLM
Deal found 3/31![KLM logo]()
$789
This Delta deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/161:07 pm
GEG
- LIS
2 stops20h 43m
Delta
Wed 4/295:00 am
LIS
- GEG
2 stops17h 49m
Delta
Deal found 4/4![Delta logo]()
$835
This United Airlines deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/175:05 am
GEG
- LIS
2 stops32h 50m
United Airlines
Mon 4/207:25 am
LIS
- GEG
2 stops43h 26m
United Airlines
Deal found 4/3![United Airlines logo]()
$869
This Delta deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/167:15 am
GEG
- LIS
2 stops23h 40m
Delta
Tue 4/285:00 am
LIS
- GEG
2 stops17h 49m
Delta
Deal found 4/4![Delta logo]()
$835
This KLM deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/1511:25 am
GEG
- LIS
2 stops19h 10m
KLM
Mon 4/275:00 am
LIS
- GEG
2 stops19h 30m
KLM
Deal found 4/4![KLM logo]()
$840
This Ovago deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:00 am
JAC
- LIS
1 stop18h 20m
Brussels Airlines
Mon 6/1510:25 am
LIS
- JAC
1 stop17h 35m
Brussels Airlines
Deal found 4/4![Brussels Airlines logo]()
$2,116
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 4/1512:30 pm
BOI
- LIS
2 stops20h 05m
United Airlines
Tue 4/211:00 pm
LIS
- BOI
3 stops37h 53m
United Airlines
Deal found 4/2![United Airlines logo]()
$891
This Air Canada deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” 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 4/149:26 am
BOI
- LIS
2 stops18h 39m
Multiple Airlines
Tue 4/2811:25 am
LIS
- BOI
3 stops31h 24m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$1,005
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 4/2411:25 am
GEG
- LIS
2 stops23h 20m
Delta
Sat 5/95:00 am
LIS
- GEG
2 stops24h 13m
Delta
Deal found 4/2![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 4/1. 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 6/26:30 am
BOI
- LIS
2 stops33h 15m
United Airlines
Tue 6/911:25 am
LIS
- BOI
2 stops36h 19m
United Airlines
Deal found 4/1![United Airlines logo]()
$1,029
This Delta deal was found by Cheapflights users on 4/1. 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 6/18:58 am
BOI
- LIS
2 stops22h 57m
Delta
Wed 6/105:00 am
LIS
- BOI
2 stops24h 28m
Delta
Deal found 4/1![Delta logo]()
$1,035
This Delta deal was found by Cheapflights users on 4/1. 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 6/98:42 am
BOI
- LIS
2 stops23h 13m
Delta
Tue 6/235:00 am
LIS
- BOI
2 stops24h 28m
Delta
Deal found 4/1![Delta logo]()
$1,035
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Thu 7/97:30 am
JAC
- LIS
2 stops18h 50m
United Airlines
Sat 7/2511:25 am
LIS
- JAC
2 stops37h 28m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,204
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 6/37:00 am
JAC
- LIS
2 stops19h 20m
United Airlines
Sat 6/1310:25 am
LIS
- JAC
2 stops17h 33m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,220
This Ovago deal was found by Cheapflights users on 3/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 am
JAC
- LIS
1 stop18h 20m
Brussels Airlines
Sat 7/2510:25 am
LIS
- JAC
1 stop17h 35m
Brussels Airlines
Deal found 3/30![Brussels Airlines logo]()
$2,313
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 8/17:00 am
GEG
- FAO
2 stops21h 30m
United Airlines
Mon 8/316:05 am
FAO
- GEG
3 stops24h 17m
United Airlines
Deal found 3/30![United Airlines logo]()
$1,813
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:00 am
GEG
- FAO
3 stops21h 30m
Air Canada
Sat 7/116:05 am
FAO
- GEG
3 stops24h 30m
Air Canada
Deal found 3/30![Air Canada logo]()
$6,731
This SmartFares deal was found by Cheapflights users on 3/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:23 pm
GEG
- FAO
2 stops41h 07m
Multiple Airlines
Sat 7/112:20 pm
FAO
- GEG
2 stops38h 45m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$6,224
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 6/277:00 am
GEG
- FAO
2 stops21h 30m
United Airlines
Sat 7/116:05 am
FAO
- GEG
3 stops24h 30m
United Airlines
Deal found 3/30![United Airlines logo]()
$6,721
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated April 4, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated April 4, 2026 and is based on user searches.
This Air France deal was found by Cheapflights users on 4/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
GEG
- LIS
2 stops20h 45m
Multiple Airlines
Tue 4/285:00 am
LIS
- GEG
2 stops21h 23m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$785
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/143:44 pm
BOI
- LIS
2 stops20h 01m
KLM
Tue 4/285:00 am
LIS
- BOI
2 stops22h 00m
KLM
Deal found 3/31![KLM logo]()
$789
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/143:30 pm
GEG
- LIS
2 stops19h 15m
KLM
Tue 4/285:00 am
LIS
- GEG
2 stops19h 30m
KLM
Deal found 3/31![KLM logo]()
$789
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:15 am
GEG
- LIS
2 stops17h 50m
Multiple Airlines
Fri 4/2411:05 am
LIS
- GEG
2 stops19h 44m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$796
This Air France deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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.
Wed 4/1512:52 pm
BOI
- LIS
2 stops19h 03m
Multiple Airlines
Tue 4/215:00 am
LIS
- BOI
2 stops22h 00m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$785
This FlightHub deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” 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 4/181:46 pm
GEG
- LIS
2 stops37h 14m
Air Canada
Tue 4/2811:25 am
LIS
- GEG
2 stops39h 26m
Air Canada
Deal found 4/3![Air Canada logo]()
$780
This Air France deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/203:44 pm
BOI
- LIS
2 stops19h 06m
Multiple Airlines
Tue 5/55:00 am
LIS
- BOI
2 stops22h 29m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$775
This Finnair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/201:29 pm
BOI
- LIS
2 stops26h 56m
Finnair
Tue 5/56:35 am
LIS
- BOI
2 stops23h 03m
Finnair
Deal found 3/31![Finnair logo]()
$782
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/214:15 pm
BOI
- LIS
2 stops18h 40m
Multiple Airlines
Tue 5/56:35 am
LIS
- BOI
2 stops23h 03m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$781
This KLM deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/217:20 am
JAC
- LIS
2 stops32h 30m
KLM
Mon 5/47:45 pm
LIS
- JAC
2 stops30h 16m
KLM
Deal found 3/31![KLM logo]()
$789
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 4/277:00 am
GEG
- LIS
2 stops22h 40m
United Airlines
Fri 5/811:25 am
LIS
- GEG
2 stops41h 51m
United Airlines
Deal found 4/1![United Airlines logo]()
$779
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/23:44 pm
BOI
- LIS
2 stops19h 06m
Delta
Sat 5/95:00 am
LIS
- BOI
2 stops24h 58m
Delta
Deal found 4/2![Delta logo]()
$720
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 April 4, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated April 4, 2026.
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” 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 5/612:25 pm
GEG
- LIS
2 stops41h 15m
United Airlines
Deal found 4/2![United Airlines logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:41 pm
GEG
- LIS
3 stops53h 19m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 5/164:03 pm
GEG
- LIS
2 stops58h 57m
United Airlines
Deal found 3/30![United Airlines logo]()
$666
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 6/27:05 am
BOI
- LIS
2 stops17h 55m
Delta
Deal found 3/31![Delta logo]()
$781
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 6/210:41 am
BOI
- LIS
3 stops17h 24m
Air Canada
Deal found 3/31![Air Canada logo]()
$974
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:50 pm
GEG
- LIS
1 stop17h 00m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,094
This oojo deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 6/26:54 pm
BOI
- LIS
1 stop33h 56m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,680
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:44 am
BOI
- LIS
2 stops30h 21m
Iberia
Deal found 3/30![Iberia logo]()
$2,987
This Cheapflightsfares deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Sun 8/161:14 pm
BOI
- LIS
2 stops27h 11m
Finnair
Deal found 3/31![Finnair logo]()
$2,998
This Scandinavian Airlines deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:39 am
BOI
- LIS
3 stops28h 26m
Scandinavian Airlines
Deal found 4/3![Scandinavian Airlines logo]()
$3,083
This AranGrant deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:15 pm
BOI
- LIS
2 stops26h 05m
Icelandair
Deal found 4/3![Icelandair logo]()
$3,181
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Sun 8/1610:37 am
BOI
- LIS
3 stops17h 28m
Air Canada
Deal found 3/31![Air Canada logo]()
$3,865
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 April 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $720 (Delta) |
One-way from | $458 (United Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $663 |
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 April 4, 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
Mon 4/20
3:44 pm-5:50 pm
2 stops19h 06m
Lisbon Humberto Delgado
Tue 5/5
5:00 am-8:29 pm
2 stops22h 29m
$775
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Mon 4/27
7:00 am-1:40 pm
2 stops22h 40m
Lisbon Humberto Delgado
Fri 5/8
11:25 am-9:16 pm
2 stops41h 51m
$779
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 4/14
6:00 am-10:45 am
2 stops20h 45m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-6:23 pm
2 stops21h 23m
$785
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Tue 4/21
7:20 am-10:50 pm
2 stops32h 30m
Lisbon Humberto Delgado
Mon 5/4
7:45 pm-7:01 pm
2 stops30h 16m
$789
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Tue 4/14
8:59 am-2:35 pm
2 stops22h 36m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-9:56 pm
2 stops23h 56m
$789
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Tue 4/14
3:44 pm-6:45 pm
2 stops20h 01m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-8:00 pm
2 stops22h 00m
$789
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 4/14
3:30 pm-6:45 pm
2 stops19h 15m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-4:30 pm
2 stops19h 30m
$789
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 4/14
4:01 pm-10:45 pm
2 stops22h 44m
Lisbon Humberto Delgado
Fri 4/24
12:20 pm-3:15 pm
3 stops34h 55m
$820
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Mon 4/27
1:00 pm-2:55 pm
2 stops18h 55m
Lisbon Humberto Delgado
Sat 5/9
5:00 am-8:15 pm
2 stops22h 15m
$835
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Thu 4/16
1:07 pm-5:50 pm
2 stops20h 43m
Lisbon Humberto Delgado
Wed 4/29
5:00 am-2:49 pm
2 stops17h 49m
$835
Showing 1-10 of 41 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 April 4, 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 April 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$549 | Average$824 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$618 | Average$982 | FlexibilityNo cancel fee | On-time69% |