$401+ Cheap flights from Idaho to Portugal
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Dec 10 — Dec 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho to Portugal with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to Portugal
Cheapest
Best
Last-minute
One-way
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 November 10, 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 November 10, 2026.
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:10 pm -
2 stops31h 20m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 11/10![United Airlines logo]()
$843
This Air France deal was found by Cheapflights users on 11/6. 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.
Wed 12/21:07 pm -
2 stops19h 03m
Mon 12/73:35 pm -
2 stops31h 29m
Deal found 11/6![Multiple Airlines logo]()
$852
This Air France deal was found by Cheapflights users on 11/6. 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.
Tue 12/159:08 am -
2 stops24h 22m
Wed 1/133:35 pm -
2 stops39h 20m
Deal found 11/6![Multiple Airlines logo]()
$994
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:44 pm -
2 stops33h 21m
Mon 11/3012:25 pm -
2 stops52h 34m
Deal found 11/9![United Airlines logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:20 pm -
2 stops56h 50m
Tue 12/2911:20 am -
3 stops64h 59m
Deal found 11/7![United Airlines logo]()
$1,069
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:59 pm -
3 stops31h 46m
Thu 11/198:20 am -
2 stops22h 29m
Deal found 11/10![Multiple Airlines logo]()
$1,266
This Ovago deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:20 am -
2 stops21h 00m
Thu 12/316:05 am -
2 stops22h 38m
Deal found 11/9![Lufthansa logo]()
$1,268
This Expedia deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:47 pm -
2 stops52h 18m
Sun 11/296:55 pm -
2 stops35h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,579
This Expedia deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:47 pm -
2 stops52h 18m
Sun 11/296:55 pm -
2 stops35h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,657
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/248:06 am -
1 stop21h 14m
Thu 12/315:30 pm -
2 stops49h 14m
Deal found 11/9![Multiple Airlines logo]()
$2,468
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:17 am -
1 stop20h 13m
Mon 11/309:20 am -
2 stops42h 32m
Deal found 11/9![Multiple Airlines logo]()
$2,581
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/251:15 pm -
2 stops25h 45m
Fri 1/15:00 am -
2 stops23h 46m
Deal found 11/10![Delta logo]()
$3,397
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 November 10, 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 November 10, 2026.
This United Airlines deal was found by Cheapflights users on 11/5. 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 2/144:08 pm -
2 stops33h 02m
Thu 2/1811:20 am -
2 stops41h 05m
Deal found 11/5![United Airlines logo]()
$731
This Finnair deal was found by Cheapflights users on 11/8. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/137:00 am -
2 stops25h 50m
Tue 4/276:35 am -
2 stops23h 03m
Deal found 11/8![Multiple Airlines logo]()
$744
This Finnair deal was found by Cheapflights users on 11/8. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/137:00 am -
2 stops33h 25m
Tue 4/276:35 am -
2 stops23h 03m
Deal found 11/8![Finnair logo]()
$752
This FlightHub deal was found by Cheapflights users on 11/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/102:43 pm -
2 stops49h 02m
Sat 4/176:15 am -
2 stops22h 01m
Deal found 11/6![Lufthansa logo]()
$781
This Justfly.com deal was found by Cheapflights users on 11/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/102:43 pm -
2 stops35h 37m
Sat 4/1711:25 am -
2 stops29h 18m
Deal found 11/7![Air Canada logo]()
$781
This Air France deal was found by Cheapflights users on 11/8. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/31:00 pm -
2 stops21h 30m
Sun 3/146:30 pm -
2 stops29h 44m
Deal found 11/8![Air France logo]()
$791
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/228:52 pm -
2 stops30h 38m
Mon 3/2912:00 pm -
2 stops40h 15m
Deal found 11/9![United Airlines logo]()
$760
This United deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/37:00 am -
2 stops18h 10m
Sun 3/1410:50 am -
2 stops52h 38m
Deal found 11/9![Multiple Airlines logo]()
$810
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 3/37:00 am -
2 stops18h 10m
Sun 3/1410:50 am -
2 stops40h 14m
Deal found 11/6![United Airlines logo]()
$781
This Air France deal was found by Cheapflights users on 11/6. 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.
Wed 12/21:07 pm -
2 stops19h 03m
Mon 12/73:35 pm -
2 stops31h 29m
Deal found 11/6![Multiple Airlines logo]()
$852
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/176:20 am -
2 stops21h 00m
Sun 3/281:00 pm -
2 stops39h 16m
Deal found 11/9![United Airlines logo]()
$785
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/105:22 pm -
2 stops34h 08m
Sat 4/171:00 pm -
2 stops51h 43m
Deal found 11/10![United Airlines logo]()
$797
This Air France deal was found by Cheapflights users on 11/6. 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.
Tue 12/159:08 am -
2 stops24h 22m
Wed 1/133:35 pm -
2 stops39h 20m
Deal found 11/6![Multiple Airlines logo]()
$994
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/185:22 pm -
2 stops33h 23m
Mon 5/312:00 pm -
2 stops42h 41m
Deal found 11/7![United Airlines logo]()
$827
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/177:00 am -
2 stops20h 30m
Sun 3/2812:35 pm -
2 stops28h 08m
Deal found 11/9![United Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/251:15 pm -
2 stops25h 45m
Fri 1/15:00 am -
2 stops23h 46m
Deal found 11/10![Delta logo]()
$3,397
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:20 pm -
2 stops56h 50m
Tue 12/2911:20 am -
3 stops64h 59m
Deal found 11/7![United Airlines logo]()
$1,069
This Trip.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1712:26 pm -
3 stops24h 34m
Sun 3/285:05 am -
3 stops24h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,580
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/179:30 am -
1 stop20h 00m
Sun 3/2810:00 am -
1 stop17h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,596
This Air France deal was found by Cheapflights users on 11/8. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/297:00 am -
2 stops25h 20m
Sun 1/311:30 am -
2 stops43h 25m
Deal found 11/8![Multiple Airlines logo]()
$4,906
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/187:00 am -
2 stops18h 15m
Mon 5/38:20 am -
3 stops21h 00m
Deal found 11/10![Multiple Airlines logo]()
$6,424
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated November 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:10 pm -
2 stops31h 20m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 11/10![United Airlines logo]()
$843
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:59 pm -
3 stops31h 46m
Thu 11/198:20 am -
2 stops22h 29m
Deal found 11/10![Multiple Airlines logo]()
$1,266
This Expedia deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:47 pm -
2 stops52h 18m
Sun 11/296:55 pm -
2 stops35h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,657
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:44 pm -
2 stops33h 21m
Mon 11/3012:25 pm -
2 stops52h 34m
Deal found 11/9![United Airlines logo]()
$1,045
This Expedia deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:47 pm -
2 stops52h 18m
Sun 11/296:55 pm -
2 stops35h 54m
Deal found 11/9![Multiple Airlines logo]()
$1,579
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:17 am -
1 stop20h 13m
Mon 11/309:20 am -
2 stops42h 32m
Deal found 11/9![Multiple Airlines logo]()
$2,581
This Air France deal was found by Cheapflights users on 11/6. 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.
Wed 12/21:07 pm -
2 stops19h 03m
Mon 12/73:35 pm -
2 stops31h 29m
Deal found 11/6![Multiple Airlines logo]()
$852
This Air France deal was found by Cheapflights users on 11/6. 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.
Tue 12/159:08 am -
2 stops24h 22m
Wed 1/133:35 pm -
2 stops39h 20m
Deal found 11/6![Multiple Airlines logo]()
$994
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:20 pm -
2 stops56h 50m
Tue 12/2911:20 am -
3 stops64h 59m
Deal found 11/7![United Airlines logo]()
$1,069
This Ovago deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:20 am -
2 stops21h 00m
Thu 12/316:05 am -
2 stops22h 38m
Deal found 11/9![Lufthansa logo]()
$1,268
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/248:06 am -
1 stop21h 14m
Thu 12/315:30 pm -
2 stops49h 14m
Deal found 11/9![Multiple Airlines logo]()
$2,468
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/251:15 pm -
2 stops25h 45m
Fri 1/15:00 am -
2 stops23h 46m
Deal found 11/10![Delta logo]()
$3,397
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 November 10, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This KLM deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/157:30 am -
2 stops43h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![KLM logo]()
$401
This Air France deal was found by Cheapflights users on 11/6. 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.
Thu 4/110:38 am -
2 stops17h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Air France logo]()
$464
This Air Canada deal was found by Cheapflights users on 11/6. 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.
Thu 4/110:39 am -
3 stops17h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Air Canada logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:33 am -
2 stops20h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$586
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/48:08 am -
2 stops19h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1511:32 am -
3 stops24h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$680
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/16:51 pm -
1 stop33h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Multiple Airlines logo]()
$861
This KAYAK deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/47:20 pm -
1 stop34h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$1,596
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 November 10, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $731 (United Airlines) |
One-way from | $401 (KLM) |
Popular in | December |
Cheapest in | April |
Average price | $853 |
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 7,457,451 searches. Data last updated November 10, 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
HaileyFaro
SUN Hailey Sun Valley-Friedman - FAO Faro
SUNFAO
Hailey Sun Valley-Friedman
Mon 2/15
7:30 am-9:30 am
2 stops43h 00m
Faro
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$401
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Thu 4/1
10:38 am-11:15 am
2 stops17h 37m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$464
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Thu 4/1
10:39 am-11:05 am
3 stops17h 26m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$469
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Fri 11/27
6:33 am-10:15 am
2 stops20h 42m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$586
Quickest round-trip
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 1/4
8:05 am-8:10 am
2 stops17h 05m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$588
HaileyFaro
SUN Hailey Sun Valley-Friedman - FAO Faro
SUNFAO
Hailey Sun Valley-Friedman
Mon 2/15
11:32 am-7:15 pm
3 stops24h 43m
Faro
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$680
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Sun 2/14
4:08 pm-8:10 am
2 stops33h 02m
Lisbon Humberto Delgado
Thu 2/18
11:20 am-9:25 pm
2 stops41h 05m
$731
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Tue 4/13
7:00 am-3:50 pm
2 stops25h 50m
Lisbon Humberto Delgado
Tue 4/27
6:35 am-10:38 pm
2 stops23h 03m
$744
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Tue 4/13
7:00 am-11:25 pm
2 stops33h 25m
Lisbon Humberto Delgado
Tue 4/27
6:35 am-10:38 pm
2 stops23h 03m
$752
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 3/22
8:52 pm-9:30 am
2 stops30h 38m
Porto
Mon 3/29
12:00 pm-9:15 pm
2 stops40h 15m
$760
Showing 1-10 of 29 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.
SUN-FAO
BOI-LIS
BOI-OPO
LWS-LIS
IDA-LIS
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
SUN-FAO
BOI-LIS
BOI-OPO
LWS-LIS
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
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 November 10, 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 7,457,451 searches. Data last updated November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$590 | Average$869 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$737 | Average$1,050 | FlexibilityNo cancel fee | On-time69% |