$482+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Nov 21 — Nov 281
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 October 22, 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 October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 12/14:24 pm -
2 stops31h 31m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/18![United Airlines logo]()
$713
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/11:24 pm -
2 stops18h 26m
Thu 12/106:30 am -
2 stops23h 16m
Deal found 10/21![American Airlines logo]()
$717
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/36:15 am -
2 stops21h 05m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/19![United Airlines logo]()
$765
This United deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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.
Mon 11/235:00 am -
2 stops22h 40m
Thu 12/38:55 am -
2 stops45h 04m
Deal found 10/18![Multiple Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/225:44 pm -
2 stops32h 46m
Fri 12/46:00 am -
2 stops22h 27m
Deal found 10/18![United Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:10 pm -
2 stops28h 25m
Wed 12/211:15 am -
2 stops38h 23m
Deal found 10/18![Delta logo]()
$784
This Air France deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/241:19 pm -
2 stops18h 51m
Tue 12/83:35 pm -
2 stops32h 41m
Deal found 10/17![Multiple Airlines logo]()
$792
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:35 pm -
2 stops36h 55m
Sat 12/1212:25 pm -
2 stops53h 43m
Deal found 10/20![United Airlines logo]()
$807
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
2 stops22h 40m
Wed 12/212:25 pm -
2 stops36h 34m
Deal found 10/18![United Airlines logo]()
$822
This Air France deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/231:17 pm -
2 stops25h 43m
Tue 12/14:10 pm -
2 stops32h 43m
Deal found 10/18![Multiple Airlines logo]()
$823
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This Air France deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:15 am -
2 stops22h 20m
Mon 12/145:00 am -
2 stops24h 58m
Deal found 10/19![Multiple Airlines logo]()
$828
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 October 22, 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 October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 4/187:00 am -
2 stops19h 45m
Mon 5/312:00 pm -
2 stops38h 16m
Deal found 10/18![United Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 1/68:40 am -
2 stops30h 20m
Wed 1/2011:15 am -
2 stops40h 02m
Deal found 10/18![Delta logo]()
$789
This Air France deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/105:30 am -
2 stops22h 05m
Thu 11/195:00 am -
2 stops19h 19m
Deal found 10/20![Multiple Airlines logo]()
$834
This Air France deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/21:05 pm -
2 stops21h 25m
Mon 11/96:30 pm -
2 stops30h 47m
Deal found 10/17![Air France logo]()
$849
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/36:15 am -
2 stops21h 05m
Thu 12/1010:55 am -
2 stops41h 32m
Deal found 10/19![United Airlines logo]()
$765
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 1/68:40 am -
2 stops30h 20m
Thu 1/145:00 am -
2 stops18h 49m
Deal found 10/18![Delta logo]()
$789
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 2/16:00 am -
2 stops26h 25m
Mon 2/156:00 am -
3 stops63h 56m
Deal found 10/21![United Airlines logo]()
$772
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This Air France deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 3/111:10 pm -
2 stops19h 00m
Sun 3/216:30 pm -
2 stops29h 44m
Deal found 10/21![Air France logo]()
$931
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:35 pm -
2 stops36h 55m
Sat 12/1212:25 pm -
2 stops53h 43m
Deal found 10/20![United Airlines logo]()
$807
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/2510:37 am -
2 stops21h 48m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
This United Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/105:00 am -
2 stops21h 30m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 10/17![United Airlines logo]()
$833
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am -
2 stops33h 30m
Mon 11/911:20 am -
2 stops35h 18m
Deal found 10/20![United Airlines logo]()
$896
This BusinessClass deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:00 am -
2 stops23h 50m
Mon 12/216:00 am -
2 stops19h 07m
Deal found 10/17![Lufthansa logo]()
$3,490
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 3/112:35 pm -
2 stops36h 45m
Sun 3/2110:40 am -
3 stops56h 55m
Deal found 10/21![United Airlines logo]()
$1,085
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 12/66:15 am -
2 stops18h 55m
Wed 12/911:20 am -
2 stops33h 19m
Deal found 10/18![United Airlines logo]()
$1,189
This Justfly.com deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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.
Mon 12/217:59 pm -
2 stops38h 56m
Mon 12/286:25 pm -
2 stops31h 52m
Deal found 10/17![Multiple Airlines logo]()
$2,191
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 1/118:15 am -
2 stops16h 55m
Thu 1/1410:15 am -
2 stops18h 18m
Deal found 10/20![United Airlines logo]()
$1,219
This Air Canada deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
2 stops18h 20m
Sun 12/1310:40 am -
3 stops32h 27m
Deal found 10/20![Multiple Airlines logo]()
$4,056
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/173:39 pm -
2 stops37h 01m
Mon 2/19:40 am -
1 stop19h 02m
Deal found 10/20![Multiple Airlines logo]()
$4,875
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:34 am -
2 stops16h 46m
Tue 12/812:50 pm -
3 stops31h 49m
Deal found 10/18![United Airlines logo]()
$3,574
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:20 am -
2 stops17h 35m
Mon 12/711:20 am -
3 stops33h 19m
Deal found 10/16![United Airlines logo]()
$3,577
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/292:51 pm -
2 stops35h 29m
Mon 12/1411:20 am -
3 stops33h 19m
Deal found 10/20![United Airlines logo]()
$3,582
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/28:00 am -
2 stops19h 20m
Sat 12/1211:20 am -
3 stops33h 19m
Deal found 10/20![United Airlines logo]()
$4,054
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 3/310:45 am -
3 stops16h 35m
Sun 3/145:00 am -
3 stops22h 04m
Deal found 10/21![United Airlines logo]()
$7,674
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated October 22, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated October 22, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/105:00 am -
2 stops21h 30m
Thu 11/196:00 am -
2 stops19h 03m
Deal found 10/19![United Airlines logo]()
$833
This Air France deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/101:19 pm -
2 stops25h 41m
Tue 11/174:10 pm -
2 stops30h 55m
Deal found 10/20![Multiple Airlines logo]()
$834
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/1910:37 am -
2 stops21h 48m
Thu 12/35:00 am -
2 stops18h 04m
Deal found 10/18![Delta logo]()
$838
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 stops32h 46m
Fri 12/412:35 pm -
2 stops28h 24m
Deal found 10/18![United Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/225:44 pm -
2 stops32h 46m
Fri 12/46:00 am -
2 stops22h 27m
Deal found 10/18![United Airlines logo]()
$783
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:10 pm -
2 stops28h 25m
Wed 12/211:15 am -
2 stops38h 23m
Deal found 10/18![Delta logo]()
$784
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/225:44 pm -
2 stops32h 46m
Tue 12/112:35 pm -
2 stops39h 55m
Deal found 10/18![United Airlines logo]()
$829
This United deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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.
Mon 11/235:00 am -
2 stops22h 40m
Thu 12/38:55 am -
2 stops45h 04m
Deal found 10/18![Multiple Airlines logo]()
$782
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:00 am -
2 stops22h 40m
Wed 12/212:25 pm -
2 stops36h 34m
Deal found 10/18![United Airlines logo]()
$822
This Air France deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/231:17 pm -
2 stops25h 43m
Tue 12/14:10 pm -
2 stops32h 43m
Deal found 10/18![Multiple Airlines logo]()
$823
This Air France deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 11/241:19 pm -
2 stops18h 51m
Tue 12/83:35 pm -
2 stops32h 41m
Deal found 10/17![Multiple Airlines logo]()
$792
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” 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 11/2412:13 pm -
2 stops20h 12m
Tue 12/111:15 am -
2 stops35h 49m
Deal found 10/18![Delta logo]()
$827
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 October 22, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 1/155:46 am -
3 stops31h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 1/47:15 am -
2 stops17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$583
This United Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” 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 1/48:05 am -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![United Airlines logo]()
$613
This KAYAK deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 1/47:38 am -
1 stop21h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$944
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 October 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $713 (United Airlines) |
One-way from | $482 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $873 |
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 October 22, 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 Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Fri 1/15
3:01 pm-10:45 pm
2 stops24h 44m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$537
Quickest round-trip
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 1/4
7:15 am-8:00 am
2 stops17h 45m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$583
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
3 stops41h 05m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$613
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Sun 4/18
7:00 am-9:45 am
2 stops19h 45m
Porto
Mon 5/3
12:00 pm-7:16 pm
2 stops38h 16m
$749
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Thu 12/3
6:15 am-10:20 am
2 stops21h 05m
Lisbon Humberto Delgado
Thu 12/10
10:55 am-9:27 pm
2 stops41h 32m
$765
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Mon 2/1
6:00 am-3:25 pm
2 stops26h 25m
Porto
Mon 2/15
6:00 am-2:56 pm
3 stops63h 56m
$772
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 1/6
8:40 am-10:00 pm
2 stops30h 20m
Porto
Wed 1/20
11:15 am-8:17 pm
2 stops40h 02m
$789
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Wed 1/6
8:40 am-10:00 pm
2 stops30h 20m
Porto
Thu 1/14
5:00 am-4:49 pm
2 stops18h 49m
$789
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Sat 12/5
5:35 pm-1:30 pm
2 stops36h 55m
Lisbon Humberto Delgado
Sat 12/12
12:25 pm-11:08 am
2 stops53h 43m
$807
BoisePorto
BOI Boise Air Term. Gowen Fld - OPO Porto
BOIOPO
Boise Air Term. Gowen Fld
Tue 11/24
12:13 pm-3:25 pm
2 stops20h 12m
Porto
Tue 12/1
11:15 am-4:04 pm
2 stops35h 49m
$827
Showing 1-10 of 28 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
BOI-OPO
IDA-LIS
SUN-FAO
Estimated round-trip price
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Everything you need to know about your flight from Idaho to Portugal
USID-PT0
BOI-LIS
BOI-OPO
IDA-LIS
SUN-FAO
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Idaho and Portugal flights
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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 October 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$549 | Average$853 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$737 | Average$1,050 | FlexibilityNo cancel fee | On-time69% |