$462+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Apr 8 — Apr 151
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 March 9, 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 March 9, 2026.
This Finnair deal was found by Cheapflights users on 3/4. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:29 pm
BOI
- LIS
2 stops26h 41m
Multiple Airlines
Tue 4/214:35 pm
LIS
- BOI
2 stops37h 19m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$514
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/203:44 pm
BOI
- LIS
2 stops19h 06m
Delta
Wed 4/295:00 am
LIS
- BOI
2 stops25h 00m
Delta
Deal found 3/5![Delta logo]()
$571
This Air France deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 12/15:40 am
BOI
- LIS
2 stops19h 20m
Air France
Sun 12/66:30 pm
LIS
- BOI
2 stops31h 03m
Air France
Deal found 3/5![Air France logo]()
$591
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 10/132:35 pm
BOI
- LIS
2 stops20h 15m
Delta
Thu 10/225:00 am
LIS
- BOI
2 stops25h 52m
Delta
Deal found 3/4![Delta logo]()
$601
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 10/1312:42 pm
BOI
- LIS
2 stops22h 08m
Delta
Wed 10/285:30 am
LIS
- BOI
2 stops24h 22m
Delta
Deal found 3/4![Delta logo]()
$608
This FlightHub deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:30 pm
BOI
- LIS
2 stops34h 30m
Scandinavian Airlines
Wed 8/266:15 pm
LIS
- BOI
2 stops35h 49m
Scandinavian Airlines
Deal found 3/7![Scandinavian Airlines logo]()
$613
This Delta deal was found by Cheapflights users on 3/4. 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.
Mon 10/1211:30 pm
BOI
- LIS
2 stops28h 15m
Delta
Thu 10/225:00 am
LIS
- BOI
2 stops25h 52m
Delta
Deal found 3/4![Delta logo]()
$626
This KAYAK deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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.
Fri 4/176:00 am
BOI
- LIS
2 stops21h 45m
Multiple Airlines
Fri 4/2410:00 am
LIS
- BOI
2 stops30h 53m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$631
This Delta deal was found by Cheapflights users on 3/4. 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.
Mon 10/1211:30 pm
BOI
- LIS
2 stops28h 15m
Delta
Wed 10/285:30 am
LIS
- BOI
2 stops24h 22m
Delta
Deal found 3/4![Delta logo]()
$633
This Delta deal was found by Cheapflights users on 3/4. 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.
Mon 10/1211:30 pm
BOI
- LIS
2 stops28h 15m
Delta
Tue 10/275:30 am
LIS
- BOI
2 stops23h 38m
Delta
Deal found 3/4![Delta logo]()
$634
This KLM deal was found by Cheapflights users on 3/4. 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.
Tue 4/143:30 pm
GEG
- LIS
2 stops19h 15m
KLM
Tue 4/289:20 am
LIS
- GEG
2 stops17h 37m
KLM
Deal found 3/4![KLM logo]()
$641
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 4/141:52 pm
BOI
- LIS
2 stops21h 53m
Delta
Tue 4/285:00 am
LIS
- BOI
2 stops25h 00m
Delta
Deal found 3/4![Delta logo]()
$642
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 March 9, 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 March 9, 2026.
This Finnair deal was found by Cheapflights users on 3/4. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:29 pm
BOI
- LIS
2 stops26h 41m
Multiple Airlines
Tue 4/214:35 pm
LIS
- BOI
2 stops37h 19m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$514
This KLM deal was found by Cheapflights users on 3/4. 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.
Tue 4/143:30 pm
GEG
- LIS
2 stops19h 15m
KLM
Tue 4/289:20 am
LIS
- GEG
2 stops17h 37m
KLM
Deal found 3/4![KLM logo]()
$641
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 4/141:52 pm
BOI
- LIS
2 stops21h 53m
Delta
Tue 4/285:00 am
LIS
- BOI
2 stops25h 00m
Delta
Deal found 3/4![Delta logo]()
$642
This United Airlines deal was found by Cheapflights users on 3/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:01 pm
GEG
- LIS
2 stops32h 19m
United Airlines
Sat 5/95:05 am
LIS
- GEG
2 stops21h 31m
United Airlines
Deal found 3/4![United Airlines logo]()
$748
This British Airways deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:32 pm
GEG
- FAO
2 stops19h 33m
British Airways
Tue 4/213:40 pm
FAO
- GEG
2 stops37h 51m
British Airways
Deal found 3/5![British Airways logo]()
$1,179
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/1411:25 am
GEG
- LIS
2 stops23h 20m
Delta
Tue 4/285:00 am
LIS
- GEG
2 stops24h 02m
Delta
Deal found 3/5![Delta logo]()
$690
This KLM deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/289:20 am
LIS
- BOI
2 stops20h 04m
KLM
Deal found 3/7![KLM logo]()
$774
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:16 pm
JAC
- LIS
2 stops35h 59m
United Airlines
Thu 4/212:20 pm
LIS
- JAC
2 stops29h 57m
United Airlines
Deal found 3/5![United Airlines logo]()
$807
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/228:30 am
BOI
- LIS
2 stops23h 25m
Delta
Wed 5/135:00 am
LIS
- BOI
2 stops22h 34m
Delta
Deal found 3/5![Delta logo]()
$737
This KLM deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/1410:41 am
BOI
- LIS
2 stops17h 34m
Multiple Airlines
Tue 4/289:20 am
LIS
- BOI
2 stops19h 04m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1612:30 pm
BOI
- LIS
2 stops39h 35m
United Airlines
Thu 4/2311:25 am
LIS
- BOI
2 stops41h 38m
United Airlines
Deal found 3/6![United Airlines logo]()
$814
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/228:30 am
BOI
- LIS
2 stops23h 25m
Delta
Wed 4/295:00 am
LIS
- BOI
2 stops18h 14m
Delta
Deal found 3/7![Delta logo]()
$769
This Air France deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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.
Fri 4/171:00 pm
JAC
- LIS
2 stops26h 25m
Multiple Airlines
Sat 4/257:45 pm
LIS
- JAC
2 stops30h 16m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$944
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:16 pm
JAC
- LIS
2 stops35h 59m
United Airlines
Tue 3/3112:20 pm
LIS
- JAC
2 stops28h 24m
United Airlines
Deal found 3/5![United Airlines logo]()
$864
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 4/235:00 am
GEG
- LIS
2 stops22h 15m
Delta
Thu 4/305:35 am
LIS
- GEG
2 stops23h 27m
Delta
Deal found 3/8![Delta logo]()
$826
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 stops22h 25m
Delta
Sat 5/95:35 am
LIS
- GEG
2 stops25h 31m
Delta
Deal found 3/5![Delta logo]()
$827
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 am
JAC
- LIS
2 stops25h 30m
United Airlines
Thu 4/212:20 pm
LIS
- JAC
2 stops29h 57m
United Airlines
Deal found 3/5![United Airlines logo]()
$911
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1710:41 am
BOI
- LIS
2 stops20h 54m
Delta
Fri 4/245:35 am
LIS
- BOI
2 stops23h 21m
Delta
Deal found 3/6![Delta logo]()
$831
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 3/254:16 pm
JAC
- LIS
2 stops16h 34m
United Airlines
Wed 4/112:20 pm
LIS
- JAC
2 stops29h 57m
United Airlines
Deal found 3/5![United Airlines logo]()
$956
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 6/23:14 pm
BOI
- LIS
2 stops19h 36m
Delta
Thu 6/115:00 am
LIS
- BOI
2 stops20h 35m
Delta
Deal found 3/4![Delta logo]()
$886
This United Airlines deal was found by Cheapflights users on 3/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/215:44 pm
JAC
- LIS
2 stops57h 36m
United Airlines
Sat 4/45:05 am
LIS
- JAC
2 stops39h 16m
United Airlines
Deal found 3/4![United Airlines logo]()
$1,065
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated March 9, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated March 9, 2026 and is based on user searches.
This Finnair deal was found by Cheapflights users on 3/4. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:29 pm
BOI
- LIS
2 stops26h 41m
Multiple Airlines
Tue 4/214:35 pm
LIS
- BOI
2 stops37h 19m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$514
This KLM deal was found by Cheapflights users on 3/4. 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.
Tue 4/143:30 pm
GEG
- LIS
2 stops19h 15m
KLM
Tue 4/289:20 am
LIS
- GEG
2 stops17h 37m
KLM
Deal found 3/4![KLM logo]()
$641
This Delta deal was found by Cheapflights users on 3/4. 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.
Tue 4/141:52 pm
BOI
- LIS
2 stops21h 53m
Delta
Tue 4/285:00 am
LIS
- BOI
2 stops25h 00m
Delta
Deal found 3/4![Delta logo]()
$642
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/1411:25 am
GEG
- LIS
2 stops23h 20m
Delta
Tue 4/285:00 am
LIS
- GEG
2 stops24h 02m
Delta
Deal found 3/5![Delta logo]()
$690
This KAYAK deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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.
Fri 4/176:00 am
BOI
- LIS
2 stops21h 45m
Multiple Airlines
Fri 4/2410:00 am
LIS
- BOI
2 stops30h 53m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$631
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/191:46 pm
GEG
- LIS
2 stops37h 14m
United Airlines
Sun 4/261:00 pm
LIS
- GEG
2 stops37h 51m
United Airlines
Deal found 3/5![United Airlines logo]()
$660
This Priceline deal was found by Cheapflights users on 3/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/191:29 pm
BOI
- LIS
2 stops26h 56m
Finnair
Sun 4/264:35 pm
LIS
- BOI
2 stops37h 19m
Finnair
Deal found 3/4![Finnair logo]()
$755
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/203:44 pm
BOI
- LIS
2 stops19h 06m
Delta
Wed 4/295:00 am
LIS
- BOI
2 stops25h 00m
Delta
Deal found 3/5![Delta logo]()
$571
This Air Canada deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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.
Mon 4/205:00 am
BOI
- LIS
2 stops21h 20m
Air Canada
Wed 4/2911:25 am
LIS
- BOI
2 stops42h 25m
Air Canada
Deal found 3/8![Air Canada logo]()
$759
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/228:30 am
BOI
- LIS
2 stops23h 25m
Delta
Wed 5/135:00 am
LIS
- BOI
2 stops22h 34m
Delta
Deal found 3/5![Delta logo]()
$737
This United Airlines deal was found by Cheapflights users on 3/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:01 pm
GEG
- LIS
2 stops32h 19m
United Airlines
Sat 5/95:05 am
LIS
- GEG
2 stops21h 31m
United Airlines
Deal found 3/4![United Airlines logo]()
$748
This Trip.com deal was found by Cheapflights users on 3/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:38 pm
GEG
- LIS
2 stops42h 47m
Multiple Airlines
Wed 5/135:00 am
LIS
- GEG
2 stops19h 57m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$677
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 March 9, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated March 9, 2026.
This Air France deal was found by Cheapflights users on 3/4. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/241:40 pm
BOI
- LIS
2 stops21h 50m
Air France
Deal found 3/4![Air France logo]()
$462
This United Airlines deal was found by Cheapflights users on 3/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:00 am
GEG
- LIS
2 stops46h 00m
United Airlines
Deal found 3/4![United Airlines logo]()
$572
This eDestinos deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:58 am
BOI
- LIS
3 stops27h 47m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$594
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:07 am
BOI
- LIS
2 stops19h 03m
United Airlines
Deal found 3/6![United Airlines logo]()
$649
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 6/178:59 pm
BOI
- LIS
3 stops43h 26m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$666
This Air France deal was found by Cheapflights users on 3/4. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:34 am
BOI
- LIS
2 stops17h 41m
Air France
Deal found 3/4![Air France logo]()
$686
This American Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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.
Mon 5/253:49 pm
JAC
- LIS
2 stops16h 56m
American Airlines
Deal found 3/5![American Airlines logo]()
$703
This Booking.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:00 am
BOI
- LIS
2 stops21h 20m
Air Canada
Deal found 3/5![Air Canada logo]()
$705
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 6/210:34 am
BOI
- LIS
2 stops24h 16m
Delta
Deal found 3/6![Delta logo]()
$710
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2512:58 pm
JAC
- LIS
3 stops49h 47m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$774
This Air Canada deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 19m
Air Canada
Deal found 3/6![Air Canada logo]()
$799
This Air Canada deal was found by Cheapflights users on 3/4. 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.
Sat 5/167:10 am
GEG
- LIS
3 stops19h 40m
Air Canada
Deal found 3/4![Air Canada logo]()
$957
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 March 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $571 (Delta) |
One-way from | $462 (Air France) |
Popular in | December |
Cheapest in | April |
Average price | $691 |
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 March 9, 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 4/13
1:29 pm-11:10 pm
2 stops26h 41m
Lisbon Humberto Delgado
Tue 4/21
4:35 pm-10:54 pm
2 stops37h 19m
$514
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 4/14
3:30 pm-6:45 pm
2 stops19h 15m
Lisbon Humberto Delgado
Tue 4/28
9:20 am-6:57 pm
2 stops17h 37m
$641
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Tue 4/14
1:52 pm-6:45 pm
2 stops21h 53m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-11:00 pm
2 stops25h 00m
$642
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Tue 4/14
11:25 am-6:45 pm
2 stops23h 20m
Lisbon Humberto Delgado
Tue 4/28
5:00 am-9:02 pm
2 stops24h 02m
$690
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Wed 4/22
8:30 am-2:55 pm
2 stops23h 25m
Lisbon Humberto Delgado
Wed 5/13
5:00 am-8:34 pm
2 stops22h 34m
$737
SpokaneLisbon
GEG - LIS
GEGLIS
Spokane
Fri 4/24
4:01 pm-8:20 am
2 stops32h 19m
Lisbon Humberto Delgado
Sat 5/9
5:05 am-6:36 pm
2 stops21h 31m
$748
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Wed 4/22
8:30 am-2:55 pm
2 stops23h 25m
Lisbon Humberto Delgado
Wed 4/29
5:00 am-4:14 pm
2 stops18h 14m
$769
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
9:20 am-10:24 pm
2 stops20h 04m
$774
JacksonLisbon
JAC - LIS
JACLIS
Jackson Hole
Mon 3/23
4:16 pm-10:15 am
2 stops35h 59m
Lisbon Humberto Delgado
Thu 4/2
12:20 pm-11:17 am
2 stops29h 57m
$807
BoiseLisbon
BOI - LIS
BOILIS
Boise Air Term. Gowen Fld
Thu 4/16
12:30 pm-11:05 am
2 stops39h 35m
Lisbon Humberto Delgado
Thu 4/23
11:25 am-10:03 pm
2 stops41h 38m
$814
Showing 1-10 of 35 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
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Alternative routes for Idaho to Portugal
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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
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Idaho and Portugal flights
Browse other Idaho and Portugal flight options. Last updated on March 9, 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 March 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$549 | Average$824 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$589 | Average$938 | FlexibilityNo cancel fee | On-time69% |