$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
may. 23 — may. 301
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Spain with Cheapflights
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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 abril 23, 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 abril 23, 2026.
This Air France deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/291:15 pm
BOI
- BIO
2 stops20h 15m
Multiple Airlines
mar. 10/136:45 am
BIO
- BOI
2 stops19h 48m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$742
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/186:55 pm
BOI
- BIO
2 stops20h 10m
United Airlines
jue. 11/266:45 am
BIO
- BOI
2 stops22h 30m
United Airlines
Deal found 4/20![United Airlines logo]()
$744
This United Airlines deal was found by Cheapflights users on 4/21. 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.
mar. 9/292:45 pm
BOI
- BIO
2 stops48h 40m
United Airlines
mar. 10/136:50 am
BIO
- BOI
2 stops23h 42m
United Airlines
Deal found 4/21![United Airlines logo]()
$749
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/21:14 pm
GEG
- BCN
2 stops17h 51m
American Airlines
mar. 11/1010:40 am
BCN
- GEG
1 stop19h 15m
American Airlines
Deal found 4/20![American Airlines logo]()
$766
This Orbitz deal was found by Cheapflights users on 4/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/25:25 am
GEG
- BCN
1 stop18h 25m
Iberia
mar. 11/1010:40 am
BCN
- GEG
1 stop19h 15m
Iberia
Deal found 4/20![Iberia logo]()
$770
This American Airlines deal was found by Cheapflights users on 4/19. 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.
mar. 11/101:11 pm
JAC
- BCN
2 stops21h 14m
American Airlines
mar. 11/2411:00 am
BCN
- JAC
2 stops33h 14m
American Airlines
Deal found 4/19![American Airlines logo]()
$771
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/1312:45 pm
GEG
- BCN
2 stops17h 55m
Multiple Airlines
vie. 10/2312:20 pm
BCN
- GEG
2 stops19h 37m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$771
This United Airlines deal was found by Cheapflights users on 4/21. 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.
mié. 8/512:38 pm
BOI
- BIO
2 stops19h 22m
United Airlines
mié. 8/196:50 am
BIO
- BOI
2 stops25h 00m
United Airlines
Deal found 4/21![United Airlines logo]()
$775
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/111:53 pm
GEG
- BCN
2 stops19h 32m
American Airlines
mar. 10/2010:15 am
BCN
- GEG
2 stops19h 32m
American Airlines
Deal found 4/20![American Airlines logo]()
$782
This British Airways deal was found by Cheapflights users on 4/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/283:50 pm
GEG
- BCN
2 stops19h 50m
Multiple Airlines
mar. 10/610:15 am
BCN
- GEG
2 stops19h 32m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$784
This Expedia deal was found by Cheapflights users on 4/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/206:44 am
BOI
- BCN
1 stop19h 26m
Iberia
mar. 10/139:30 pm
BCN
- BOI
2 stops31h 35m
Iberia
Deal found 4/21![Iberia logo]()
$785
This Booking.com deal was found by Cheapflights users on 4/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/206:30 am
BOI
- BCN
2 stops18h 50m
Air Canada
mar. 10/1312:15 pm
BCN
- BOI
2 stops41h 16m
Air Canada
Deal found 4/21![Air Canada logo]()
$792
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 abril 23, 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 abril 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/19. 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.
mar. 9/292:45 pm
BOI
- BIO
2 stops48h 40m
United Airlines
mar. 10/136:50 am
BIO
- BOI
2 stops25h 02m
United Airlines
Deal found 4/19![United Airlines logo]()
$749
This American Airlines deal was found by Cheapflights users on 4/22. 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.
mié. 9/301:58 pm
GEG
- BCN
2 stops19h 37m
Multiple Airlines
mié. 10/2112:20 pm
BCN
- GEG
2 stops19h 37m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$771
This KLM deal was found by Cheapflights users on 4/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/93:05 pm
GEG
- AGP
2 stops19h 10m
KLM
vie. 10/1610:45 am
AGP
- GEG
2 stops21h 03m
KLM
Deal found 4/21![KLM logo]()
$797
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
lun. 8/1012:17 pm
BOI
- BCN
1 stop13h 53m
American Airlines
vie. 8/2110:15 am
BCN
- BOI
2 stops20h 05m
American Airlines
Deal found 4/23![American Airlines logo]()
$852
This Iberia deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
lun. 8/1012:10 pm
BOI
- BCN
1 stop14h 00m
Iberia
vie. 8/2110:45 am
BCN
- BOI
1 stop18h 55m
Iberia
Deal found 4/23![Iberia logo]()
$865
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/307:21 pm
GEG
- BCN
1 stop30h 49m
Delta
mié. 10/211:20 pm
BCN
- GEG
1 stop16h 45m
Delta
Deal found 4/22![Delta logo]()
$889
This Finnair deal was found by Cheapflights users on 4/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/61:14 pm
BOI
- BCN
2 stops22h 51m
Finnair
vie. 8/2110:45 am
BCN
- BOI
1 stop19h 35m
Finnair
Deal found 4/19![Finnair logo]()
$922
This Scandinavian Airlines deal was found by Cheapflights users on 4/19. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/251:03 pm
GEG
- AGP
3 stops22h 07m
Scandinavian Airlines
lun. 8/108:10 pm
AGP
- GEG
3 stops29h 58m
Scandinavian Airlines
Deal found 4/19![Scandinavian Airlines logo]()
$1,501
This United Airlines deal was found by Cheapflights users on 4/21. 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.
mié. 8/512:38 pm
BOI
- BIO
2 stops19h 22m
United Airlines
mié. 8/196:50 am
BIO
- BOI
2 stops25h 00m
United Airlines
Deal found 4/21![United Airlines logo]()
$775
This KLM deal was found by Cheapflights users on 4/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/284:05 pm
BOI
- BIO
2 stops21h 55m
Multiple Airlines
lun. 10/1210:30 am
BIO
- BOI
2 stops20h 38m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$799
This United Airlines deal was found by Cheapflights users on 4/18. 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.
mar. 10/1311:30 am
GEG
- BCN
1 stop16h 45m
United Airlines
vie. 10/234:10 pm
BCN
- GEG
1 stop27h 20m
United Airlines
Deal found 4/18![United Airlines logo]()
$809
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/304:05 pm
BOI
- BCN
2 stops17h 05m
Delta
lun. 10/129:20 am
BCN
- BOI
2 stops22h 32m
Delta
Deal found 4/22![Delta logo]()
$893
This Finnair deal was found by Cheapflights users on 4/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/512:17 pm
BOI
- BIO
2 stops26h 58m
Multiple Airlines
mié. 8/196:45 am
BIO
- BOI
2 stops36h 42m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$817
This United Airlines deal was found by Cheapflights users on 4/22. 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.
mié. 9/305:00 am
GEG
- BCN
2 stops23h 15m
United Airlines
mié. 10/214:10 pm
BCN
- GEG
1 stop27h 20m
United Airlines
Deal found 4/22![United Airlines logo]()
$814
This Delta deal was found by Cheapflights users on 4/19. 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.
mar. 5/1910:39 am
BOI
- BIO
2 stops22h 51m
Delta
mar. 5/266:45 am
BIO
- BOI
2 stops18h 24m
Delta
Deal found 4/19![Delta logo]()
$918
This Iberia deal was found by Cheapflights users on 4/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/255:16 am
GEG
- AGP
2 stops42h 14m
Iberia
lun. 8/105:35 pm
AGP
- GEG
2 stops36h 07m
Iberia
Deal found 4/22![Iberia logo]()
$1,014
This KLM deal was found by Cheapflights users on 4/18. 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.
vie. 9/113:05 pm
GEG
- BCN
1 stop35h 05m
KLM
dom. 9/201:20 pm
BCN
- GEG
1 stop18h 28m
KLM
Deal found 4/18![KLM logo]()
$1,024
This British Airways deal was found by Cheapflights users on 4/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/95:20 pm
BOI
- BCN
2 stops19h 00m
Multiple Airlines
jue. 8/207:40 am
BCN
- BOI
2 stops22h 40m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$851
This KLM deal was found by Cheapflights users on 4/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/252:26 pm
GEG
- AGP
2 stops20h 44m
KLM
lun. 8/108:25 pm
AGP
- GEG
2 stops27h 21m
KLM
Deal found 4/19![KLM logo]()
$1,025
This United Airlines deal was found by Cheapflights users on 4/19. 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.
mar. 8/1111:46 am
BOI
- MAD
2 stops35h 04m
United Airlines
mar. 8/2512:45 pm
MAD
- BOI
2 stops36h 03m
United Airlines
Deal found 4/19![United Airlines logo]()
$862
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
mar. 10/131:46 pm
JAC
- BCN
1 stop12h 49m
American Airlines
dom. 11/110:40 am
BCN
- JAC
1 stop33h 34m
American Airlines
Deal found 4/23![American Airlines logo]()
$1,170
This Finnair deal was found by Cheapflights users on 4/22. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/56:44 am
BOI
- MAD
2 stops22h 06m
Multiple Airlines
mié. 8/2612:40 pm
MAD
- BOI
1 stop17h 40m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$883
This Delta deal was found by Cheapflights users on 4/20. 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.
vie. 10/93:05 pm
GEG
- AGP
2 stops18h 35m
Delta
vie. 10/165:55 am
AGP
- GEG
2 stops19h 11m
Delta
Deal found 4/20![Delta logo]()
$972
This KLM deal was found by Cheapflights users on 4/18. 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.
jue. 7/307:20 am
GEG
- BCN
1 stop18h 50m
KLM
jue. 8/1311:00 am
BCN
- GEG
1 stop19h 29m
KLM
Deal found 4/18![KLM logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
lun. 8/107:00 am
IDA
- BCN
2 stops17h 00m
United Airlines
lun. 8/241:25 pm
BCN
- IDA
2 stops35h 51m
United Airlines
Deal found 4/23![United Airlines logo]()
$901
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/65:20 pm
BOI
- BCN
2 stops19h 15m
Multiple Airlines
vie. 8/2110:15 am
BCN
- BOI
2 stops20h 05m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$924
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1112:40 pm
GEG
- BCN
2 stops19h 30m
Delta
dom. 9/201:20 pm
BCN
- GEG
1 stop14h 27m
Delta
Deal found 4/18![Delta logo]()
$1,022
This KLM deal was found by Cheapflights users on 4/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/272:04 pm
BOI
- MAD
1 stop14h 11m
KLM
lun. 8/109:50 am
MAD
- BOI
1 stop20h 42m
KLM
Deal found 4/19![KLM logo]()
$1,091
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/272:04 pm
BOI
- MAD
1 stop14h 11m
Delta
jue. 8/139:50 am
MAD
- BOI
2 stops22h 06m
Delta
Deal found 4/22![Delta logo]()
$1,026
This American Airlines deal was found by Cheapflights users on 4/19. 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.
sáb. 7/1112:29 pm
IDA
- BCN
1 stop14h 06m
American Airlines
sáb. 7/187:40 am
BCN
- IDA
2 stops22h 31m
American Airlines
Deal found 4/19![American Airlines logo]()
$1,367
Last-minute flights from Idaho to SpainDiscover last-minute flight deals from Idaho to Spain. Data last updated abril 23, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Spain. Data last updated abril 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/19. 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.
mié. 4/221:22 pm
GEG
- MAD
2 stops19h 13m
American Airlines
mié. 4/291:00 pm
MAD
- GEG
1 stop16h 33m
American Airlines
Deal found 4/19![American Airlines logo]()
$939
This Iberia deal was found by Cheapflights users on 4/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/226:00 am
GEG
- MAD
1 stop18h 05m
Iberia
mié. 4/291:00 pm
MAD
- GEG
1 stop16h 33m
Iberia
Deal found 4/19![Iberia logo]()
$942
This Finnair deal was found by Cheapflights users on 4/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/226:00 am
GEG
- MAD
1 stop23h 25m
Multiple Airlines
mié. 4/297:35 pm
MAD
- GEG
2 stops25h 57m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$947
This United Airlines deal was found by Cheapflights users on 4/22. 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.
mié. 4/224:01 pm
GEG
- MAD
2 stops55h 04m
United Airlines
mié. 4/2910:50 am
MAD
- GEG
2 stops19h 21m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,012
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/2412:04 pm
BOI
- BCN
1 stop17h 11m
United Airlines
jue. 4/3012:15 pm
BCN
- BOI
2 stops38h 56m
United Airlines
Deal found 4/20![United Airlines logo]()
$984
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/62:57 pm
BOI
- BCN
2 stops17h 08m
Multiple Airlines
sáb. 5/910:25 am
BCN
- BOI
2 stops20h 37m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$876
This Air France deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1210:39 am
BOI
- AGP
2 stops17h 06m
Multiple Airlines
mar. 5/1910:40 am
AGP
- BOI
2 stops17h 54m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$975
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/176:30 am
BOI
- BCN
2 stops42h 50m
Air Canada
mar. 5/2612:15 pm
BCN
- BOI
2 stops37h 41m
Air Canada
Deal found 4/19![Air Canada logo]()
$949
This United Airlines deal was found by Cheapflights users on 4/18. 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.
dom. 5/178:28 am
BOI
- BCN
2 stops40h 52m
United Airlines
mar. 5/264:10 pm
BCN
- BOI
1 stop32h 34m
United Airlines
Deal found 4/18![United Airlines logo]()
$979
This Expedia deal was found by Cheapflights users on 4/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1910:39 am
BOI
- BIO
2 stops22h 51m
Air France
mar. 5/2610:30 am
BIO
- BOI
2 stops20h 28m
Air France
Deal found 4/19![Air France logo]()
$914
This Delta deal was found by Cheapflights users on 4/19. 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.
mar. 5/1910:39 am
BOI
- BIO
2 stops22h 51m
Delta
mar. 5/266:45 am
BIO
- BOI
2 stops18h 24m
Delta
Deal found 4/19![Delta logo]()
$918
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/2012:25 pm
GEG
- MAD
2 stops25h 05m
Lufthansa
mié. 5/275:55 am
MAD
- GEG
2 stops26h 56m
Lufthansa
Deal found 4/22![Lufthansa logo]()
$1,010
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 abril 23, 2026.
Search for one-way flight options from Idaho to Spain. Find affordable one-way fares based on user searches. Data last updated abril 23, 2026.
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/122:21 pm
BOI
- BCN
2 stops18h 04m
American Airlines
Deal found 4/21![American Airlines logo]()
$357
This Iberia deal was found by Cheapflights users on 4/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/126:44 am
BOI
- BCN
1 stop19h 26m
Iberia
Deal found 4/20![Iberia logo]()
$360
This United Airlines deal was found by Cheapflights users on 4/19. 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.
sáb. 8/87:05 pm
BOI
- MAD
2 stops51h 45m
United Airlines
Deal found 4/19![United Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 4/19. 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.
mar. 10/138:40 am
BOI
- BCN
1 stop20h 35m
United Airlines
Deal found 4/19![United Airlines logo]()
$387
This KLM deal was found by Cheapflights users on 4/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/121:43 pm
BOI
- BCN
1 stop15h 07m
KLM
Deal found 4/21![KLM logo]()
$392
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/151:58 pm
GEG
- MAD
2 stops18h 32m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$451
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/156:00 am
GEG
- MAD
1 stop18h 05m
Iberia
Deal found 4/22![Iberia logo]()
$454
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/54:00 pm
GEG
- MAD
2 stops31h 05m
United Airlines
Deal found 4/20![United Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
sáb. 6/66:00 pm
BOI
- MAD
3 stops45h 59m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
dom. 6/74:28 pm
BOI
- MAD
3 stops37h 37m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
vie. 6/54:28 pm
BOI
- MAD
3 stops36h 22m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$517
This Finnair deal was found by Cheapflights users on 4/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/512:53 pm
GEG
- MAD
1 stop16h 32m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$519
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 abril 23, 2026.
Round-trip from | $742 (Air France) |
|---|---|
One-way from | $357 (American Airlines) |
Popular in | June |
Cheapest in | February |
Average price | $814 |
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 abril 23, 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
BoiseBilbao
BOI - BIO
BOIBIO
Boise Air Term. Gowen Fld
mar. 9/29
2:45 pm-11:25 pm
2 stops48h 40m
Bilbao
mar. 10/13
6:50 am-11:52 pm
2 stops25h 02m
$749
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
mié. 9/30
1:58 pm-6:35 pm
2 stops19h 37m
Barcelona-El Prat
mié. 10/21
12:20 pm-10:57 pm
2 stops19h 37m
$771
BoiseBilbao
BOI - BIO
BOIBIO
Boise Air Term. Gowen Fld
mié. 8/5
12:38 pm-4:00 pm
2 stops19h 22m
Bilbao
mié. 8/19
6:50 am-11:50 pm
2 stops25h 00m
$775
SpokaneMálaga
GEG - AGP
GEGAGP
Spokane
vie. 10/9
3:05 pm-7:15 pm
2 stops19h 10m
Malaga
vie. 10/16
10:45 am-10:48 pm
2 stops21h 03m
$797
BoiseBilbao
BOI - BIO
BOIBIO
Boise Air Term. Gowen Fld
lun. 9/28
4:05 pm-10:00 pm
2 stops21h 55m
Bilbao
lun. 10/12
10:30 am-11:08 pm
2 stops20h 38m
$799
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
mar. 10/13
11:30 am-1:15 pm
1 stop16h 45m
Barcelona-El Prat
vie. 10/23
4:10 pm-10:30 am
1 stop27h 20m
$809
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
mié. 9/30
5:00 am-1:15 pm
2 stops23h 15m
Barcelona-El Prat
mié. 10/21
4:10 pm-10:30 am
1 stop27h 20m
$814
BoiseBilbao
BOI - BIO
BOIBIO
Boise Air Term. Gowen Fld
mié. 8/5
12:17 pm-11:15 pm
2 stops26h 58m
Bilbao
mié. 8/19
6:45 am-11:27 am
2 stops36h 42m
$817
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
dom. 8/9
5:20 pm-8:20 pm
2 stops19h 00m
Barcelona-El Prat
jue. 8/20
7:40 am-10:20 pm
2 stops22h 40m
$851
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
lun. 8/10
12:17 pm-10:10 am
1 stop13h 53m
Barcelona-El Prat
vie. 8/21
10:15 am-10:20 pm
2 stops20h 05m
$852
Showing 1-10 of 60 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-BIO
GEG-BCN
JAC-BCN
BOI-BCN
GEG-MAD
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-BIO
GEG-BCN
JAC-BCN
BOI-BCN
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 $776). 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
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
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 abril 23, 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 6 airlines flying from Idaho to Spain
Discover the top 6 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 abril 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$782 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$493 | Average$711 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$529 | Average$941 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$541 | Average$901 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$651 | Average$857 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,145 | Average$1,317 | FlexibilityNo cancel fee | On-time75% |