$357+ Cheap flights from Idaho to Spain
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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Aug 15 — Aug 221
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Spain with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Idaho to SpainExplore the most affordable flight options available from Idaho to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
Explore the most affordable flight options available from Idaho to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
This Expedia deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/910:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Tue 8/258:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 11/26:59 pm
BOI
- MAD
2 stops28h 46m
United Airlines
Tue 11/101:25 pm
MAD
- BOI
2 stops41h 41m
United Airlines
Deal found 7/13![United Airlines logo]()
$735
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 11/1812:42 pm
BOI
- BIO
2 stops20h 43m
Delta
Thu 11/266:50 am
BIO
- BOI
2 stops16h 40m
Delta
Deal found 7/13![Delta logo]()
$740
This Air Canada deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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.
Wed 11/186:30 am
BOI
- MAD
2 stops17h 30m
Multiple Airlines
Thu 11/261:25 pm
MAD
- BOI
3 stops31h 59m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$741
This Air Canada deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:59 pm
BOI
- MAD
2 stops29h 01m
Multiple Airlines
Tue 11/101:25 pm
MAD
- BOI
3 stops31h 59m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$747
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 11/1810:38 am
BOI
- BIO
2 stops22h 47m
Delta
Fri 11/277:10 am
BIO
- BOI
2 stops17h 39m
Delta
Deal found 7/13![Delta logo]()
$747
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/188:22 am
BOI
- VLC
2 stops23h 53m
Delta
Tue 10/275:55 am
VLC
- BOI
2 stops23h 13m
Delta
Deal found 7/13![Delta logo]()
$748
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/1412:26 pm
BOI
- BCN
1 stop16h 49m
United Airlines
Thu 10/2212:15 pm
BCN
- BOI
2 stops37h 28m
United Airlines
Deal found 7/13![United Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/1311:10 am
GEG
- BCN
1 stop17h 05m
United Airlines
Fri 10/2312:15 pm
BCN
- GEG
2 stops41h 34m
United Airlines
Deal found 7/13![United Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 10/135:00 am
GEG
- BCN
2 stops18h 00m
United Airlines
Thu 10/1512:15 pm
BCN
- GEG
2 stops41h 34m
United Airlines
Deal found 7/15![United Airlines logo]()
$752
This United Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 11/186:30 am
BOI
- MAD
2 stops17h 30m
United Airlines
Thu 11/266:00 am
MAD
- BOI
2 stops23h 30m
United Airlines
Deal found 7/12![United Airlines logo]()
$753
This American Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 11/27:00 am
BOI
- MAD
2 stops19h 30m
American Airlines
Mon 11/912:55 am
MAD
- BOI
1 stop19h 43m
American Airlines
Deal found 7/13![American Airlines logo]()
$755
Best flights from Idaho to SpainDiscover carefully curated flight deals from Idaho to Spain that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
Discover carefully curated flight deals from Idaho to Spain that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
This Delta deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/188:22 am
BOI
- VLC
2 stops23h 53m
Delta
Tue 10/275:55 am
VLC
- BOI
2 stops23h 13m
Delta
Deal found 7/14![Delta logo]()
$748
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/198:15 am
BOI
- BCN
1 stop22h 05m
United Airlines
Thu 10/2212:15 pm
BCN
- BOI
2 stops37h 28m
United Airlines
Deal found 7/13![United Airlines logo]()
$749
This Iberia deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:00 am
BOI
- VLC
2 stops29h 05m
Iberia
Tue 10/277:30 am
VLC
- BOI
2 stops21h 59m
Iberia
Deal found 7/12![Iberia logo]()
$760
This Condor deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Tue 8/258:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$763
This Cheapflightsfares deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 11/87:00 am
GEG
- MAD
2 stops31h 35m
Lufthansa
Thu 11/126:00 am
MAD
- GEG
2 stops24h 05m
Lufthansa
Deal found 7/12![Lufthansa logo]()
$794
This Finnair deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:24 pm
BOI
- BCN
2 stops23h 26m
Finnair
Thu 10/221:30 pm
BCN
- BOI
1 stop16h 59m
Finnair
Deal found 7/13![Finnair logo]()
$795
This KLM deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 10/232:00 pm
GEG
- AGP
2 stops20h 15m
KLM
Sat 10/318:25 pm
AGP
- GEG
2 stops27h 25m
KLM
Deal found 7/15![KLM logo]()
$885
This eDestinos deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:10 pm
JAC
- BCN
2 stops35h 25m
Virgin Atlantic
Sun 9/611:00 am
BCN
- JAC
1 stop17h 11m
Virgin Atlantic
Deal found 7/15![Virgin Atlantic logo]()
$1,042
This British Airways deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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.
Sun 8/96:13 pm
BOI
- MAD
2 stops33h 02m
British Airways
Tue 8/181:00 pm
MAD
- BOI
1 stop17h 45m
British Airways
Deal found 7/12![British Airways logo]()
$1,130
This oojo deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:20 am
GEG
- IBZ
2 stops46h 20m
Condor
Fri 8/148:05 pm
IBZ
- GEG
2 stops31h 55m
Condor
Deal found 7/12![Condor logo]()
$1,480
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/1412:26 pm
BOI
- BCN
1 stop16h 49m
United Airlines
Thu 10/2212:15 pm
BCN
- BOI
2 stops37h 28m
United Airlines
Deal found 7/13![United Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 11/195:20 am
GEG
- AGP
2 stops24h 55m
Delta
Wed 12/24:10 pm
AGP
- GEG
2 stops32h 56m
Delta
Deal found 7/12![Delta logo]()
$796
This Expedia deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 9/237:02 am
BOI
- VLC
2 stops33h 13m
Iberia
Wed 9/306:45 am
VLC
- BOI
2 stops47h 42m
Iberia
Deal found 7/13![Iberia logo]()
$816
This KAYAK deal was found by Cheapflights users on 7/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:26 pm
BOI
- BCN
1 stop16h 49m
Lufthansa
Thu 10/223:15 pm
BCN
- BOI
1 stop15h 43m
Lufthansa
Deal found 7/16![Lufthansa logo]()
$818
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 10/135:00 am
GEG
- BCN
2 stops18h 00m
United Airlines
Thu 10/1512:15 pm
BCN
- GEG
2 stops41h 34m
United Airlines
Deal found 7/15![United Airlines logo]()
$752
This FlightHub deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/1110:52 am
BOI
- MAD
2 stops27h 03m
Multiple Airlines
Tue 8/257:00 am
MAD
- BOI
2 stops23h 27m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$853
This Delta deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 9/293:28 pm
BOI
- BIO
2 stops18h 02m
Delta
Tue 10/136:45 am
BIO
- BOI
2 stops18h 29m
Delta
Deal found 7/11![Delta logo]()
$800
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/135:00 am
GEG
- BCN
2 stops23h 15m
United Airlines
Fri 10/2312:15 pm
BCN
- GEG
2 stops41h 34m
United Airlines
Deal found 7/13![United Airlines logo]()
$753
This Finnair deal was found by Cheapflights users on 7/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:02 am
BOI
- MAD
1 stop18h 03m
Multiple Airlines
Sat 10/107:50 pm
MAD
- BOI
2 stops26h 43m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$854
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 9/282:11 pm
BOI
- MAD
1 stop14h 04m
Delta
Sat 10/1012:45 pm
MAD
- BOI
2 stops30h 43m
Delta
Deal found 7/15![Delta logo]()
$805
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/186:50 pm
BOI
- BCN
1 stop35h 30m
United Airlines
Wed 10/2812:35 pm
BCN
- BOI
3 stops59h 24m
United Airlines
Deal found 7/14![United Airlines logo]()
$766
This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am
BOI
- BCN
3 stops20h 20m
Multiple Airlines
Thu 10/221:15 pm
BCN
- BOI
2 stops28h 19m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$855
This Cheapflightsfares deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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.
Fri 8/1410:31 am
BOI
- MAD
2 stops19h 39m
Lufthansa
Wed 8/195:55 am
MAD
- BOI
2 stops23h 42m
Lufthansa
Deal found 7/14![Lufthansa logo]()
$952
This Iberia deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:40 am
GEG
- IBZ
2 stops22h 55m
Iberia
Wed 9/29:40 pm
IBZ
- GEG
2 stops32h 02m
Iberia
Deal found 7/12![Iberia logo]()
$969
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 9/2711:10 pm
BOI
- MAD
1 stop29h 05m
Delta
Sat 10/1012:45 pm
MAD
- BOI
2 stops30h 43m
Delta
Deal found 7/15![Delta logo]()
$810
This United Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 11/116:30 am
BOI
- BCN
2 stops18h 30m
United Airlines
Thu 11/263:10 pm
BCN
- BOI
1 stop15h 56m
United Airlines
Deal found 7/12![United Airlines logo]()
$769
This United deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:26 pm
BOI
- VLC
2 stops26h 09m
Multiple Airlines
Sat 10/316:10 am
VLC
- BOI
2 stops23h 56m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$864
This KLM deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:35 am
JAC
- BCN
1 stop20h 15m
KLM
Sun 9/611:00 am
BCN
- JAC
1 stop17h 11m
KLM
Deal found 7/14![KLM logo]()
$1,183
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:00 am
BOI
- VLC
2 stops21h 15m
Delta
Wed 11/46:00 am
VLC
- BOI
2 stops19h 14m
Delta
Deal found 7/16![Delta logo]()
$830
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/1311:10 am
GEG
- BCN
1 stop17h 05m
United Airlines
Tue 11/109:55 am
BCN
- GEG
2 stops20h 10m
United Airlines
Deal found 7/13![United Airlines logo]()
$772
Last-minute flights from Idaho to SpainDiscover last-minute flight deals from Idaho to Spain. Data last updated July 16, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Spain. Data last updated July 16, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 7/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Fri 8/2110:15 am
BCN
- BOI
2 stops18h 18m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$874
This Expedia deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/910:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Tue 8/258:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$726
This CheapOair deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Thu 8/208:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$786
This United Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/97:07 pm
GEG
- BCN
1 stop34h 13m
United Airlines
Tue 8/2512:15 pm
BCN
- GEG
2 stops41h 31m
United Airlines
Deal found 7/11![United Airlines logo]()
$866
This United Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/97:05 pm
BOI
- BCN
1 stop35h 15m
United Airlines
Thu 8/201:15 pm
BCN
- BOI
2 stops40h 22m
United Airlines
Deal found 7/12![United Airlines logo]()
$871
This Condor deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Tue 8/258:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$763
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/1010:35 am
BOI
- BCN
1 stop19h 45m
United Airlines
Fri 8/2112:15 pm
BCN
- BOI
2 stops37h 43m
United Airlines
Deal found 7/13![United Airlines logo]()
$861
This FlightHub deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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.
Mon 8/107:05 pm
BOI
- BCN
2 stops28h 55m
Air Canada
Fri 8/2112:15 pm
BCN
- BOI
2 stops41h 22m
Air Canada
Deal found 7/13![Air Canada logo]()
$864
This American Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/103:19 pm
BOI
- BCN
2 stops17h 06m
American Airlines
Tue 8/2510:45 am
BCN
- BOI
1 stop32h 31m
American Airlines
Deal found 7/13![American Airlines logo]()
$867
This FlightHub deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/1110:52 am
BOI
- MAD
2 stops27h 03m
Multiple Airlines
Tue 8/257:00 am
MAD
- BOI
2 stops23h 27m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$853
This Travelocity deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:52 am
BOI
- MAD
2 stops27h 03m
Multiple Airlines
Thu 8/207:00 am
MAD
- BOI
2 stops23h 27m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/315:00 am
GEG
- BCN
2 stops18h 00m
United Airlines
Thu 9/101:15 pm
BCN
- GEG
2 stops34h 56m
United Airlines
Deal found 7/14![United Airlines logo]()
$877
One-way flights from Idaho to SpainSearch for one-way flight options from Idaho to Spain. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
Search for one-way flight options from Idaho to Spain. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
This American Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/133:24 pm
BOI
- BCN
2 stops16h 16m
American Airlines
Deal found 7/12![American Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:45 am
BOI
- BCN
1 stop20h 25m
Delta
Deal found 7/13![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:00 am
BOI
- BCN
2 stops20h 35m
Delta
Deal found 7/15![Delta logo]()
$364
This British Airways deal was found by Cheapflights users on 7/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:15 pm
GEG
- MAD
2 stops20h 45m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/37:43 pm
GEG
- BCN
3 stops57h 57m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/251:24 pm
BOI
- BCN
3 stops47h 06m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 10/27:24 pm
GEG
- BCN
3 stops51h 51m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$391
This Expedia deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 7/2710:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:20 pm
BOI
- BCN
3 stops35h 55m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/275:52 pm
BOI
- BCN
3 stops34h 13m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 9/285:12 am
GEG
- BCN
3 stops26h 03m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 9/268:30 am
GEG
- BCN
3 stops38h 45m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$437
Find flight deals from Idaho to Spain
Keep the following information in mind while searching for Idaho to Spain flight deals. Data was last updated July 16, 2026.
Round-trip from | $726 (Expedia) |
|---|---|
One-way from | $357 (American Airlines) |
Popular in | June |
Cheapest in | February |
Average price | $1,159 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Spain 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 July 16, 2026.
Use the filters below to find and compare flights from Idaho to Spain that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseValencia
BOI - VLC
BOIVLC
Boise Air Term. Gowen Fld
Sun 10/18
8:22 am-4:15 pm
2 stops23h 53m
Valencia
Tue 10/27
5:55 am-10:08 pm
2 stops23h 13m
$748
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Mon 10/19
8:15 am-2:20 pm
1 stop22h 05m
Barcelona-El Prat
Thu 10/22
12:15 pm-5:43 pm
2 stops37h 28m
$749
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Wed 10/14
12:26 pm-1:15 pm
1 stop16h 49m
Barcelona-El Prat
Thu 10/22
12:15 pm-5:43 pm
2 stops37h 28m
$749
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
Tue 10/13
5:00 am-8:00 am
2 stops18h 00m
Barcelona-El Prat
Thu 10/15
12:15 pm-8:49 pm
2 stops41h 34m
$752
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
Tue 10/13
5:00 am-1:15 pm
2 stops23h 15m
Barcelona-El Prat
Fri 10/23
12:15 pm-8:49 pm
2 stops41h 34m
$753
BoiseValencia
BOI - VLC
BOIVLC
Boise Air Term. Gowen Fld
Sun 10/18
7:00 am-8:05 pm
2 stops29h 05m
Valencia
Tue 10/27
7:30 am-10:29 pm
2 stops21h 59m
$760
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Mon 8/10
10:52 am-10:10 pm
2 stops27h 18m
Barcelona-El Prat
Tue 8/25
8:00 am-10:27 pm
2 stops22h 27m
$763
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Sun 10/18
6:50 pm-2:20 pm
1 stop35h 30m
Barcelona-El Prat
Wed 10/28
12:35 pm-4:59 pm
3 stops59h 24m
$766
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Wed 11/11
6:30 am-9:00 am
2 stops18h 30m
Barcelona-El Prat
Thu 11/26
3:10 pm-11:06 pm
1 stop15h 56m
$769
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
Tue 10/13
11:10 am-1:15 pm
1 stop17h 05m
Barcelona-El Prat
Tue 11/10
9:55 am-9:05 pm
2 stops20h 10m
$772
Showing 1-10 of 58 resultsSorted by cheapest first
Best time to book a flight from Idaho to Spain
Have a flexible travel schedule? Discover the best time to fly to Spain from Idaho with our price prediction graph.
BOI-BCN
GEG-MAD
GEG-BCN
BOI-MAD
BOI-VLC
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 Spain
USID-ES0
BOI-BCN
GEG-MAD
GEG-BCN
BOI-MAD
What is the cheapest month to book a flight from Idaho to Spain?
Currently, February is the cheapest month in which you can book a flight from Idaho to Spain (average of $467). Flying from Idaho to Spain in June is currently the most expensive (average of $1,000). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Related info for your journey
Find useful and relevant information for your journey from Idaho to Spain. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
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Popular flights
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Top destinations
Top regions
Alternative routes for Idaho to Spain
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Spain by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Spain by cabin class
Find flights from Idaho to Spain, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Spain flights
Browse other Idaho and Spain flight options. Last updated on July 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Spain
Find the right flight back to Idaho after your stay in Spain
Idaho to Spain flights
Consider these flights traveling from Idaho to Spain.
Fly to Spain regions
Consider these flights traveling to Spain regions.
Top 5 airlines flying from Idaho to Spain
Discover the top 5 airlines that operate flights from Idaho to Spain. 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 July 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$939 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$493 | Average$931 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$541 | Average$998 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$599 | Average$946 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$856 | Average$869 | FlexibilityNo cancel fee | On-time67% |