$331+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Portugal with Cheapflights
1. Tell us where you want to go
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
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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 August 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 August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Sun 12/67:00 am -
2 stops18h 20m
Tue 12/812:50 pm -
3 stops40h 19m
Deal found 8/21![United Airlines logo]()
$721
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 12/67:00 am -
2 stops18h 10m
Wed 12/911:20 am -
2 stops40h 56m
Deal found 8/17![United Airlines logo]()
$727
This Air Canada deal was found by Cheapflights users on 8/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:00 am -
2 stops16h 20m
Tue 12/811:20 am -
2 stops44h 18m
Deal found 8/21![Air Canada logo]()
$731
This Goibibo deal was found by Cheapflights users on 8/21. 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 Goibibo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:15 am -
2 stops19h 45m
Wed 11/185:00 am -
2 stops20h 37m
Deal found 8/21![Delta logo]()
$747
This Air Canada deal was found by Cheapflights users on 8/20. 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.
Sun 12/67:00 am -
3 stops19h 20m
Wed 12/911:20 am -
2 stops19h 39m
Deal found 8/20![Multiple Airlines logo]()
$758
This KLM deal was found by Cheapflights users on 8/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:57 am -
2 stops18h 53m
Thu 2/252:40 pm -
2 stops36h 47m
Deal found 8/20![KLM logo]()
$765
This United Airlines deal was found by Cheapflights users on 8/19. 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 12/295:00 am -
2 stops21h 05m
Fri 1/811:20 am -
3 stops41h 49m
Deal found 8/19![United Airlines logo]()
$767
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/297:00 am -
2 stops24h 10m
Fri 1/85:00 am -
2 stops22h 27m
Deal found 8/17![Delta logo]()
$776
This AirNGo deal was found by Cheapflights users on 8/21. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:30 pm -
2 stops58h 35m
Thu 10/298:55 am -
2 stops37h 47m
Deal found 8/21![Air Canada logo]()
$790
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:30 pm -
2 stops58h 35m
Thu 10/298:55 am -
2 stops30h 57m
Deal found 8/22![United Airlines logo]()
$814
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:34 am -
2 stops24h 16m
Wed 10/145:00 am -
2 stops20h 33m
Deal found 8/19![Delta logo]()
$820
This Air France deal was found by Cheapflights users on 8/17. 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.
Thu 10/2211:18 am -
2 stops15h 57m
Sun 11/15:00 am -
2 stops23h 08m
Deal found 8/17![Multiple Airlines logo]()
$860
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 August 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 August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Sun 12/65:00 am -
2 stops19h 10m
Tue 12/812:50 pm -
2 stops31h 28m
Deal found 8/19![United Airlines logo]()
$722
This Goibibo deal was found by Cheapflights users on 8/21. 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 Goibibo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:15 am -
2 stops19h 45m
Wed 11/185:00 am -
2 stops20h 37m
Deal found 8/21![Delta logo]()
$747
This KLM deal was found by Cheapflights users on 8/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:57 am -
2 stops18h 53m
Thu 2/252:40 pm -
2 stops36h 47m
Deal found 8/20![KLM logo]()
$765
This Air France deal was found by Cheapflights users on 8/17. 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.
Thu 10/2211:18 am -
2 stops15h 57m
Sun 11/15:00 am -
2 stops23h 08m
Deal found 8/17![Multiple Airlines logo]()
$860
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:42 pm -
2 stops49h 38m
Thu 12/318:55 am -
2 stops21h 35m
Deal found 8/18![Air Canada logo]()
$992
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:10 pm -
2 stops37h 10m
Thu 2/256:05 am -
3 stops23h 04m
Deal found 8/20![Lufthansa logo]()
$1,147
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Tue 1/194:25 pm -
2 stops39h 25m
Fri 1/225:00 am -
2 stops23h 02m
Deal found 8/21![United Airlines logo]()
$756
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/297:00 am -
2 stops20h 25m
Fri 1/85:00 am -
2 stops22h 27m
Deal found 8/21![Delta logo]()
$776
This AranGrant deal was found by Cheapflights users on 8/17. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops27h 45m
Fri 11/203:45 pm -
2 stops30h 40m
Deal found 8/17![British Airways logo]()
$1,615
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Tue 12/295:00 am -
2 stops21h 05m
Fri 1/811:20 am -
3 stops41h 49m
Deal found 8/21![United Airlines logo]()
$767
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/255:10 am -
2 stops22h 05m
Fri 10/95:00 am -
2 stops21h 45m
Deal found 8/20![Delta logo]()
$880
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:30 pm -
2 stops58h 35m
Thu 10/298:55 am -
2 stops30h 57m
Deal found 8/22![United Airlines logo]()
$814
This KLM deal was found by Cheapflights users on 8/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:55 pm -
2 stops17h 50m
Wed 9/237:45 pm -
2 stops31h 30m
Deal found 8/18![KLM logo]()
$1,067
This Delta deal was found by Cheapflights users on 8/20. 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.
Sun 10/41:00 pm -
2 stops20h 50m
Sun 10/115:35 am -
2 stops26h 15m
Deal found 8/20![Delta logo]()
$887
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 11/3012:51 pm -
3 stops45h 04m
Thu 2/257:00 pm -
3 stops50h 21m
Deal found 8/22![Multiple Airlines logo]()
$1,157
This Delta deal was found by Cheapflights users on 8/20. 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.
Thu 10/158:59 am -
2 stops22h 56m
Sat 10/245:35 am -
2 stops23h 33m
Deal found 8/20![Delta logo]()
$907
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/54:28 pm -
2 stops23h 17m
Fri 10/1611:25 am -
3 stops37h 24m
Deal found 8/18![United Airlines logo]()
$936
This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:49 am -
2 stops18h 16m
Sat 11/217:00 am -
2 stops22h 59m
Deal found 8/20![British Airways logo]()
$1,639
This Delta deal was found by Cheapflights users on 8/20. 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.
Wed 9/95:30 am -
2 stops22h 45m
Wed 9/165:00 am -
2 stops24h 34m
Deal found 8/20![Delta logo]()
$1,140
This Air Canada deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 10/1510:30 am -
3 stops17h 35m
Sat 10/2411:25 am -
2 stops18h 08m
Deal found 8/22![Multiple Airlines logo]()
$1,607
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:02 am -
2 stops24h 33m
Thu 9/105:00 am -
2 stops22h 15m
Deal found 8/19![Delta logo]()
$1,144
This Air Canada deal was found by Cheapflights users on 8/20. 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.
Sat 10/1010:35 am -
3 stops17h 30m
Sun 10/181:00 pm -
2 stops29h 28m
Deal found 8/20![Multiple Airlines logo]()
$1,751
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:05 am -
1 stop21h 40m
Fri 9/189:55 am -
1 stop20h 05m
Deal found 8/18![Multiple Airlines logo]()
$2,371
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated August 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:02 am -
2 stops24h 33m
Thu 9/105:00 am -
2 stops22h 15m
Deal found 8/19![Delta logo]()
$1,144
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:38 pm -
2 stops16h 57m
Thu 9/178:25 am -
2 stops32h 54m
Deal found 8/20![Iberia logo]()
$1,343
This Delta deal was found by Cheapflights users on 8/20. 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.
Wed 9/95:30 am -
2 stops22h 45m
Wed 9/165:00 am -
2 stops24h 34m
Deal found 8/20![Delta logo]()
$1,140
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:45 am -
2 stops20h 30m
Sun 9/279:50 am -
2 stops21h 58m
Deal found 8/21![Delta logo]()
$1,277
This KLM deal was found by Cheapflights users on 8/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:55 pm -
2 stops17h 50m
Wed 9/237:45 pm -
2 stops31h 30m
Deal found 8/18![KLM logo]()
$1,067
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Fri 9/187:00 am -
2 stops20h 30m
Wed 9/2310:25 am -
1 stop17h 43m
Deal found 8/18![United Airlines logo]()
$1,168
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/255:10 am -
2 stops22h 05m
Fri 10/95:00 am -
2 stops21h 45m
Deal found 8/20![Delta logo]()
$880
This KLM deal was found by Cheapflights users on 8/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:14 pm -
2 stops17h 31m
Fri 10/95:00 am -
2 stops21h 45m
Deal found 8/20![KLM logo]()
$884
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Sat 9/267:00 am -
1 stop21h 00m
Fri 10/99:55 am -
1 stop21h 40m
Deal found 8/20![Multiple Airlines logo]()
$1,173
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:32 pm -
2 stops20h 33m
Wed 9/307:20 am -
2 stops23h 05m
Deal found 8/18![Multiple Airlines logo]()
$1,307
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:34 am -
2 stops24h 16m
Wed 10/145:00 am -
2 stops20h 33m
Deal found 8/19![Delta logo]()
$820
This Air Canada deal was found by Cheapflights users on 8/19. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:30 am -
3 stops17h 35m
Wed 10/1412:55 pm -
2 stops27h 39m
Deal found 8/19![Multiple Airlines logo]()
$963
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 August 22, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:14 pm -
2 stops19h 31m
Deal found 8/18![American Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 8/18. 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 11/214:10 pm -
2 stops57h 10m
Deal found 8/18![United Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/278:31 am -
3 stops40h 39m
Deal found 8/22![Multiple Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:08 pm -
2 stops17h 27m
Deal found 8/19![American Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Fri 9/181:09 pm -
2 stops59h 11m
Deal found 8/21![United Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Fri 9/251:36 pm -
3 stops49h 54m
Deal found 8/20![Multiple Airlines logo]()
$520
This Air France deal was found by Cheapflights users on 8/19. 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.
Thu 9/1711:10 am -
2 stops19h 45m
Deal found 8/19![Air France logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Tue 10/612:42 pm -
3 stops25h 03m
Deal found 8/19![Multiple Airlines logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:39 pm -
3 stops28h 36m
Deal found 8/21![Multiple Airlines logo]()
$579
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Thu 9/174:21 pm -
3 stops44h 14m
Deal found 8/19![Multiple Airlines logo]()
$593
This Ovago deal was found by Cheapflights users on 8/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/243:16 pm -
2 stops18h 19m
Deal found 8/19![British Airways logo]()
$845
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2412:23 pm -
2 stops21h 12m
Deal found 8/19![Multiple Airlines logo]()
$982
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 August 22, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $721 (United Airlines) |
One-way from | $331 (American Airlines) |
Popular in | December |
Cheapest in | April |
Average price | $1,079 |
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 August 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
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Sun 12/6
5:00 am-8:10 am
2 stops19h 10m
Lisbon Humberto Delgado
Tue 12/8
12:50 pm-12:18 pm
2 stops31h 28m
$722
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 11/9
5:15 am-8:00 am
2 stops19h 45m
Lisbon Humberto Delgado
Wed 11/18
5:00 am-6:37 pm
2 stops20h 37m
$747
JacksonLisbon
JAC Jackson Hole - LIS Lisbon Humberto Delgado
JACLIS
Jackson Hole
Tue 1/19
4:25 pm-2:50 pm
2 stops39h 25m
Lisbon Humberto Delgado
Fri 1/22
5:00 am-9:02 pm
2 stops23h 02m
$756
SpokaneFaro
GEG Spokane - FAO Faro
GEGFAO
Spokane
Mon 11/30
10:57 am-1:50 pm
2 stops18h 53m
Faro
Thu 2/25
2:40 pm-7:27 pm
2 stops36h 47m
$765
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Tue 12/29
5:00 am-10:05 am
2 stops21h 05m
Lisbon Humberto Delgado
Fri 1/8
11:20 am-9:09 pm
3 stops41h 49m
$767
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Tue 12/29
7:00 am-11:25 am
2 stops20h 25m
Lisbon Humberto Delgado
Fri 1/8
5:00 am-7:27 pm
2 stops22h 27m
$776
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Fri 10/16
5:30 pm-11:05 am
2 stops58h 35m
Lisbon Humberto Delgado
Thu 10/29
8:55 am-9:52 am
2 stops30h 57m
$814
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Thu 10/22
11:18 am-11:15 am
2 stops15h 57m
Lisbon Humberto Delgado
Sun 11/1
5:00 am-9:08 pm
2 stops23h 08m
$860
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Fri 9/25
5:10 am-11:15 am
2 stops22h 05m
Lisbon Humberto Delgado
Fri 10/9
5:00 am-6:45 pm
2 stops21h 45m
$880
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Sun 10/4
1:00 pm-5:50 pm
2 stops20h 50m
Lisbon Humberto Delgado
Sun 10/11
5:35 am-11:50 pm
2 stops26h 15m
$887
Showing 1-10 of 33 resultsSorted by cheapest first
Best time to book a flight from Idaho to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Idaho with our price prediction graph.
GEG-LIS
BOI-LIS
GEG-FAO
JAC-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
GEG-LIS
BOI-LIS
GEG-FAO
JAC-LIS
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.
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Idaho and Portugal flights
Browse other Idaho and Portugal flight options. Last updated on August 22, 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 August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$467 | Average$937 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$549 | Average$827 | FlexibilityNo cancel fee | On-timeN/A |