$332+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Sep 4 — Sep 111
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
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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 5, 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 5, 2026.
This Expedia deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am -
2 stops32h 30m
Wed 11/115:00 am -
2 stops24h 11m
Deal found 8/2![Lufthansa logo]()
$715
This Expedia deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am -
2 stops31h 50m
Wed 11/1111:20 am -
2 stops41h 37m
Deal found 8/2![Multiple Airlines logo]()
$719
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:30 pm -
2 stops33h 40m
Wed 12/911:20 am -
2 stops40h 42m
Deal found 7/31![United Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/137:02 am -
2 stops19h 03m
Wed 12/2311:20 am -
2 stops42h 00m
Deal found 8/4![United Airlines logo]()
$727
This Expedia deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:00 pm -
2 stops60h 20m
Wed 12/22:20 pm -
2 stops38h 49m
Deal found 8/2![Multiple Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:00 am -
2 stops19h 00m
Tue 12/225:00 am -
2 stops26h 02m
Deal found 8/4![Delta logo]()
$731
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:00 pm -
2 stops57h 20m
Wed 12/2311:20 am -
2 stops43h 02m
Deal found 8/4![United Airlines logo]()
$736
This Expedia deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:25 pm -
2 stops17h 05m
Thu 11/125:00 am -
2 stops22h 57m
Deal found 8/3![Lufthansa logo]()
$738
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:13 pm -
2 stops58h 47m
Tue 12/225:00 am -
2 stops26h 02m
Deal found 8/4![Delta logo]()
$742
This Expedia deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/282:25 pm -
2 stops26h 25m
Thu 11/125:00 am -
2 stops22h 57m
Deal found 8/3![Lufthansa logo]()
$749
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:00 am -
2 stops19h 00m
Mon 12/2112:20 pm -
2 stops42h 42m
Deal found 8/4![Delta logo]()
$751
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:00 am -
2 stops21h 40m
Wed 11/1111:20 am -
2 stops33h 05m
Deal found 8/3![United Airlines logo]()
$754
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 5, 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 5, 2026.
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/269:40 am -
2 stops15h 30m
Fri 1/2911:20 am -
2 stops42h 46m
Deal found 7/31![United Airlines logo]()
$721
This Expedia deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:00 pm -
2 stops60h 20m
Mon 12/72:20 pm -
2 stops38h 49m
Deal found 8/3![Multiple Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:30 am -
2 stops24h 40m
Fri 1/85:00 am -
2 stops24h 05m
Deal found 8/1![Delta logo]()
$775
This KLM deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:05 am -
2 stops26h 20m
Tue 9/298:35 pm -
2 stops26h 39m
Deal found 8/2![KLM logo]()
$934
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:30 pm -
3 stops37h 50m
Wed 12/911:20 am -
2 stops40h 42m
Deal found 8/4![United Airlines logo]()
$730
This Expedia deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:20 am -
2 stops20h 00m
Sat 11/76:00 am -
2 stops19h 03m
Deal found 8/3![Multiple Airlines logo]()
$761
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:00 pm -
2 stops57h 20m
Wed 12/2311:20 am -
2 stops43h 02m
Deal found 8/4![United Airlines logo]()
$736
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:34 am -
2 stops24h 16m
Tue 10/65:00 am -
2 stops19h 14m
Deal found 8/2![Delta logo]()
$819
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:10 pm -
2 stops57h 10m
Mon 12/712:25 pm -
3 stops40h 44m
Deal found 8/3![United Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:00 am -
2 stops19h 00m
Mon 12/215:30 am -
2 stops25h 32m
Deal found 8/4![Delta logo]()
$838
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/295:00 am -
2 stops21h 05m
Fri 1/86:00 am -
2 stops23h 09m
Deal found 8/4![United Airlines logo]()
$776
This Air France deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:10 am -
2 stops16h 05m
Mon 10/195:00 am -
2 stops17h 50m
Deal found 7/31![Multiple Airlines logo]()
$939
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:25 am -
2 stops23h 10m
Sat 10/245:35 am -
2 stops23h 33m
Deal found 7/31![Delta logo]()
$911
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:10 pm -
2 stops25h 25m
Tue 11/106:05 am -
2 stops21h 52m
Deal found 8/3![United Airlines logo]()
$813
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:18 am -
2 stops19h 37m
Sun 10/185:00 am -
2 stops24h 10m
Deal found 8/4![Delta logo]()
$940
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/157:00 am -
2 stops19h 20m
Tue 12/2911:20 am -
2 stops41h 22m
Deal found 8/4![United Airlines logo]()
$819
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:05 pm -
2 stops20h 45m
Sun 9/275:00 am -
2 stops18h 14m
Deal found 8/1![Delta logo]()
$998
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/268:40 am -
2 stops41h 40m
Fri 1/111:20 am -
2 stops42h 46m
Deal found 8/1![United Airlines logo]()
$916
This BusinessClass deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/242:15 pm -
2 stops36h 15m
Thu 2/186:10 pm -
2 stops37h 28m
Deal found 8/3![Aer Lingus logo]()
$3,410
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:25 pm -
2 stops17h 05m
Sat 11/145:00 am -
3 stops22h 57m
Deal found 8/3![United Airlines logo]()
$981
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:00 am -
2 stops20h 20m
Sat 9/1911:25 am -
2 stops41h 20m
Deal found 7/31![United Airlines logo]()
$989
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/186:05 pm -
2 stops56h 15m
Wed 12/3010:15 am -
1 stop17h 20m
Deal found 8/3![United Airlines logo]()
$1,078
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:15 am -
2 stops44h 50m
Thu 9/1011:25 am -
2 stops40h 43m
Deal found 8/2![United Airlines logo]()
$1,101
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:00 am -
2 stops25h 50m
Tue 9/2911:30 am -
3 stops18h 55m
Deal found 8/2![Multiple Airlines logo]()
$7,038
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2411:30 pm -
2 stops32h 35m
Thu 2/181:25 pm -
3 stops39h 44m
Deal found 8/3![United Airlines logo]()
$4,426
Last-minute flights from Idaho to PortugalDiscover last-minute flight deals from Idaho to Portugal. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Portugal. Data last updated August 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:00 am -
2 stops20h 05m
Mon 9/2111:25 am -
3 stops37h 24m
Deal found 8/4![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:15 am -
2 stops44h 50m
Thu 9/1011:25 am -
2 stops40h 43m
Deal found 8/1![United Airlines logo]()
$1,101
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:00 am -
2 stops20h 20m
Sat 9/1911:25 am -
2 stops41h 20m
Deal found 7/31![United Airlines logo]()
$989
This KLM deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:28 pm -
2 stops20h 17m
Sat 9/195:35 am -
2 stops16h 41m
Deal found 7/31![Multiple Airlines logo]()
$1,010
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:05 pm -
2 stops20h 45m
Sun 9/275:00 am -
2 stops18h 14m
Deal found 8/1![Delta logo]()
$998
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:00 am -
2 stops19h 20m
Tue 9/2211:25 am -
2 stops39h 26m
Deal found 8/4![United Airlines logo]()
$930
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:17 pm -
2 stops22h 33m
Sat 9/265:00 am -
2 stops19h 19m
Deal found 8/3![Delta logo]()
$998
This Air Canada deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:31 am -
3 stops17h 34m
Sat 9/2611:25 am -
3 stops29h 09m
Deal found 7/31![Air Canada logo]()
$1,149
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:34 am -
2 stops24h 16m
Tue 10/65:00 am -
2 stops19h 14m
Deal found 8/2![Delta logo]()
$819
This KLM deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:05 am -
2 stops26h 20m
Tue 9/298:35 pm -
2 stops26h 39m
Deal found 8/2![KLM logo]()
$934
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:14 am -
1 stop18h 31m
Tue 10/69:00 am -
1 stop19h 20m
Deal found 8/2![Multiple Airlines logo]()
$1,157
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:25 am -
2 stops18h 55m
Tue 9/2911:25 am -
2 stops31h 03m
Deal found 8/4![United Airlines logo]()
$901
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 5, 2026.
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This British Airways deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:51 pm -
2 stops25h 04m
Deal found 8/2![Multiple Airlines logo]()
$332
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:10 pm -
2 stops57h 10m
Deal found 8/4![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:10 pm -
2 stops57h 10m
Deal found 8/3![United Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:20 am -
3 stops30h 35m
Deal found 7/31![Multiple Airlines logo]()
$447
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:00 am -
2 stops20h 10m
Deal found 7/31![United Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:05 pm -
2 stops36h 15m
Deal found 7/31![United Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/251:38 pm -
3 stops45h 07m
Deal found 7/31![Multiple Airlines logo]()
$493
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:24 pm -
3 stops41h 56m
Deal found 8/3![Multiple Airlines logo]()
$516
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am -
3 stops68h 35m
Deal found 8/2![United Airlines logo]()
$611
This Cheapflightsfares deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:19 pm -
2 stops25h 06m
Deal found 7/31![Finnair logo]()
$4,279
This Cheapflightsfares deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:44 am -
2 stops30h 21m
Deal found 8/4![Iberia logo]()
$4,545
This AranGrant deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:15 am -
2 stops19h 05m
Deal found 8/3![Brussels Airlines logo]()
$4,759
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 5, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $715 (Expedia) |
One-way from | $332 (British Airways) |
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 2,558,603 searches. Data last updated August 5, 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
Tue 1/26
9:40 am-8:10 am
2 stops15h 30m
Lisbon Humberto Delgado
Fri 1/29
11:20 am-11:06 pm
2 stops42h 46m
$721
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Fri 11/13
1:00 pm-9:20 am
2 stops60h 20m
Lisbon Humberto Delgado
Mon 12/7
2:20 pm-9:09 pm
2 stops38h 49m
$728
JacksonLisbon
JAC Jackson Hole - LIS Lisbon Humberto Delgado
JACLIS
Jackson Hole
Sat 12/5
12:30 pm-9:20 am
3 stops37h 50m
Lisbon Humberto Delgado
Wed 12/9
11:20 am-9:02 pm
2 stops40h 42m
$730
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Fri 12/11
4:00 pm-9:20 am
2 stops57h 20m
Lisbon Humberto Delgado
Wed 12/23
11:20 am-10:22 pm
2 stops43h 02m
$736
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Fri 11/13
4:10 pm-9:20 am
2 stops57h 10m
Lisbon Humberto Delgado
Mon 12/7
12:25 pm-9:09 pm
3 stops40h 44m
$758
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Sun 11/1
6:20 am-9:20 am
2 stops20h 00m
Lisbon Humberto Delgado
Sat 11/7
6:00 am-6:03 pm
2 stops19h 03m
$761
SpokaneLisbon
GEG Spokane - LIS Lisbon Humberto Delgado
GEGLIS
Spokane
Tue 12/29
6:30 am-3:10 pm
2 stops24h 40m
Lisbon Humberto Delgado
Fri 1/8
5:00 am-9:05 pm
2 stops24h 05m
$775
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
6:00 am-9:09 pm
2 stops23h 09m
$776
JacksonLisbon
JAC Jackson Hole - LIS Lisbon Humberto Delgado
JACLIS
Jackson Hole
Fri 10/30
4:10 pm-11:35 pm
2 stops25h 25m
Lisbon Humberto Delgado
Tue 11/10
6:05 am-8:57 pm
2 stops21h 52m
$813
BoiseLisbon
BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado
BOILIS
Boise Air Term. Gowen Fld
Mon 9/21
10:34 am-5:50 pm
2 stops24h 16m
Lisbon Humberto Delgado
Tue 10/6
5:00 am-5:14 pm
2 stops19h 14m
$819
Showing 1-10 of 38 resultsSorted by cheapest first
Best time to book a flight from Idaho to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Idaho with our price prediction graph.
BOI-LIS
GEG-LIS
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
BOI-LIS
GEG-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
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 August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Portugal flights
Consider these flights traveling from Idaho to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 2 airlines flying from Idaho to Portugal
Discover the top 2 airlines that operate flights from Idaho to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 5, 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 |