$407+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
May 10 — May 171
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 April 10, 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 April 10, 2026.
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 9/291:15 pm
BOI
- BIO
2 stops20h 15m
Delta
Tue 10/136:45 am
BIO
- BOI
2 stops19h 48m
Delta
Deal found 4/9![Delta logo]()
$741
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 9/2911:45 am
BOI
- BIO
2 stops27h 40m
United Airlines
Tue 10/136:50 am
BIO
- BOI
2 stops20h 26m
United Airlines
Deal found 4/9![United Airlines logo]()
$743
This Finnair deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 11/187:00 am
BOI
- BIO
2 stops32h 15m
Finnair
Thu 11/266:45 am
BIO
- BOI
2 stops23h 18m
Finnair
Deal found 4/7![Finnair logo]()
$760
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 11/87:02 am
GEG
- MAD
2 stops31h 33m
Lufthansa
Thu 11/126:00 am
MAD
- GEG
2 stops24h 09m
Lufthansa
Deal found 4/6![Lufthansa logo]()
$762
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 11/101:11 pm
JAC
- BCN
2 stops22h 34m
American Airlines
Tue 11/241:30 pm
BCN
- JAC
2 stops30h 44m
American Airlines
Deal found 4/7![American Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 10/1312:10 pm
BOI
- BCN
2 stops18h 05m
Multiple Airlines
Tue 10/2012:20 pm
BCN
- BOI
2 stops18h 27m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 10/1312:45 pm
GEG
- BCN
2 stops17h 55m
Multiple Airlines
Fri 10/2312:20 pm
BCN
- GEG
2 stops19h 37m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$770
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Wed 11/1812:29 pm
BOI
- BIO
2 stops26h 36m
Lufthansa
Fri 11/277:25 am
BIO
- BOI
2 stops18h 30m
Lufthansa
Deal found 4/6![Lufthansa logo]()
$779
This Mytrip deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:30 am
BOI
- MAD
2 stops42h 20m
Air Canada
Wed 9/2312:45 pm
MAD
- BOI
2 stops32h 45m
Air Canada
Deal found 4/6![Air Canada logo]()
$782
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 8/512:38 pm
BOI
- BIO
2 stops25h 47m
United Airlines
Wed 8/196:50 am
BIO
- BOI
2 stops22h 35m
United Airlines
Deal found 4/6![United Airlines logo]()
$785
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 9/221:58 pm
GEG
- MAD
2 stops18h 32m
American Airlines
Wed 10/712:20 pm
MAD
- GEG
1 stop17h 27m
American Airlines
Deal found 4/6![American Airlines logo]()
$790
This Booking.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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.
Tue 10/205:00 am
BOI
- MAD
2 stops17h 50m
Air Canada
Tue 10/2712:35 pm
MAD
- BOI
2 stops37h 41m
Air Canada
Deal found 4/5![Air Canada logo]()
$791
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 April 10, 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 April 10, 2026.
This Finnair deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Tue 9/2212:45 pm
GEG
- MAD
1 stop16h 40m
Multiple Airlines
Wed 10/73:55 pm
MAD
- GEG
1 stop29h 03m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$800
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 8/116:23 am
BOI
- MAD
2 stops40h 27m
United Airlines
Tue 8/2512:45 pm
MAD
- BOI
2 stops37h 08m
United Airlines
Deal found 4/10![United Airlines logo]()
$861
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Fri 8/141:24 pm
JAC
- BCN
1 stop19h 06m
American Airlines
Sat 8/226:30 pm
BCN
- JAC
2 stops24h 48m
American Airlines
Deal found 4/8![American Airlines logo]()
$955
This KLM deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/242:18 pm
BOI
- MAD
1 stop13h 57m
KLM
Fri 5/112:45 pm
MAD
- BOI
1 stop17h 43m
KLM
Deal found 4/7![KLM logo]()
$992
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 7/281:01 pm
GEG
- BCN
1 stop13h 09m
Delta
Fri 8/710:55 am
BCN
- GEG
2 stops21h 12m
Delta
Deal found 4/10![Delta logo]()
$999
This Priceline deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/261:26 pm
GEG
- AGP
2 stops25h 49m
Finnair
Thu 8/61:00 am
AGP
- GEG
2 stops27h 00m
Finnair
Deal found 4/7![Finnair logo]()
$1,071
This Iberia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Thu 4/301:20 pm
GEG
- IBZ
2 stops22h 40m
Iberia
Tue 5/58:25 pm
IBZ
- GEG
2 stops33h 08m
Iberia
Deal found 4/6![Iberia logo]()
$1,175
This KAYAK deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 4/2912:35 pm
GEG
- IBZ
2 stops57h 25m
Lufthansa
Tue 5/56:25 pm
IBZ
- GEG
2 stops35h 51m
Lufthansa
Deal found 4/10![Lufthansa logo]()
$1,268
This Scandinavian Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sun 7/2611:19 am
GEG
- AGP
2 stops23h 01m
Scandinavian Airlines
Fri 8/78:05 pm
AGP
- GEG
3 stops29h 54m
Scandinavian Airlines
Deal found 4/7![Scandinavian Airlines logo]()
$1,469
This Finnair deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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.
Tue 8/116:44 am
BOI
- MAD
1 stop18h 21m
Multiple Airlines
Tue 8/2511:45 am
MAD
- BOI
2 stops18h 32m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$882
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/94:20 pm
BOI
- BCN
2 stops32h 00m
United Airlines
Tue 5/193:15 pm
BCN
- BOI
1 stop15h 35m
United Airlines
Deal found 4/7![United Airlines logo]()
$936
This KLM deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 7/2712:20 pm
BOI
- MAD
2 stops17h 20m
KLM
Thu 8/137:05 am
MAD
- BOI
2 stops17h 43m
KLM
Deal found 4/7![KLM logo]()
$993
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 7/2610:48 pm
GEG
- BCN
1 stop29h 02m
Delta
Fri 8/71:20 pm
BCN
- GEG
1 stop18h 47m
Delta
Deal found 4/10![Delta logo]()
$1,002
This Finnair deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/226:00 am
GEG
- MAD
1 stop23h 25m
Multiple Airlines
Wed 4/294:20 pm
MAD
- GEG
2 stops30h 59m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$946
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Thu 8/66:00 am
GEG
- MAD
2 stops22h 30m
American Airlines
Tue 8/1812:40 pm
MAD
- GEG
1 stop32h 18m
American Airlines
Deal found 4/7![American Airlines logo]()
$1,067
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:00 pm
GEG
- BCN
2 stops56h 20m
United Airlines
Sun 9/2010:25 am
BCN
- GEG
2 stops58h 44m
United Airlines
Deal found 4/9![United Airlines logo]()
$976
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 7/272:04 pm
BOI
- MAD
1 stop14h 11m
Delta
Thu 8/136:00 am
MAD
- BOI
2 stops25h 59m
Delta
Deal found 4/10![Delta logo]()
$1,022
This KLM deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:05 pm
GEG
- BCN
1 stop35h 05m
KLM
Sun 9/201:20 pm
BCN
- GEG
1 stop18h 28m
KLM
Deal found 4/6![KLM logo]()
$1,023
This Condor deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Thu 9/312:46 pm
GEG
- BCN
2 stops18h 19m
Multiple Airlines
Sat 9/128:00 am
BCN
- GEG
2 stops22h 01m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$950
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/222:37 pm
BOI
- BIO
2 stops24h 48m
United Airlines
Wed 5/66:50 am
BIO
- BOI
2 stops19h 25m
United Airlines
Deal found 4/7![United Airlines logo]()
$990
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 7/272:04 pm
BOI
- MAD
1 stop14h 11m
Delta
Tue 8/116:00 am
MAD
- BOI
2 stops25h 29m
Delta
Deal found 4/10![Delta logo]()
$1,022
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Sun 7/193:39 pm
JAC
- BCN
2 stops17h 26m
American Airlines
Sun 7/267:20 pm
BCN
- JAC
2 stops24h 39m
American Airlines
Deal found 4/6![American Airlines logo]()
$1,129
This KLM deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Thu 7/301:01 pm
GEG
- BCN
1 stop13h 09m
KLM
Thu 8/1311:00 am
BCN
- GEG
1 stop19h 29m
KLM
Deal found 4/6![KLM logo]()
$1,044
This BusinessClass deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
GEG
- IBZ
2 stops26h 00m
Iberia
Tue 5/51:25 pm
IBZ
- GEG
2 stops40h 08m
Iberia
Deal found 4/7![Iberia logo]()
$1,271
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/86:58 pm
BOI
- BCN
2 stops30h 02m
United Airlines
Mon 5/1811:15 am
BCN
- BOI
2 stops19h 35m
United Airlines
Deal found 4/10![United Airlines logo]()
$996
This British Airways deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Fri 8/73:10 pm
GEG
- BCN
2 stops20h 05m
Multiple Airlines
Fri 8/147:40 am
BCN
- GEG
2 stops22h 07m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,045
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 8/79:21 am
GEG
- BCN
2 stops18h 09m
Delta
Fri 8/141:20 pm
BCN
- GEG
1 stop19h 24m
Delta
Deal found 4/6![Delta logo]()
$1,053
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 8/65:00 am
GEG
- MAD
2 stops16h 50m
United Airlines
Tue 8/181:05 pm
MAD
- GEG
2 stops40h 59m
United Airlines
Deal found 4/7![United Airlines logo]()
$1,002
This Air Canada deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 am
GEG
- AGP
3 stops24h 50m
Air Canada
Thu 7/26:25 am
AGP
- GEG
3 stops25h 10m
Air Canada
Deal found 4/8![Air Canada logo]()
$3,120
This Condor deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Fri 9/112:33 pm
GEG
- BCN
2 stops16h 32m
Multiple Airlines
Sun 9/2010:25 am
BCN
- GEG
2 stops19h 36m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,070
Last-minute flights from Idaho to SpainDiscover last-minute flight deals from Idaho to Spain. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Spain. Data last updated April 10, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/1210:35 am
BOI
- BCN
2 stops23h 20m
Lufthansa
Wed 4/2211:50 am
BCN
- BOI
2 stops19h 12m
Lufthansa
Deal found 4/6![Lufthansa logo]()
$907
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:05 am
GEG
- MAD
2 stops18h 55m
United Airlines
Tue 4/2810:50 am
MAD
- GEG
2 stops19h 21m
United Airlines
Deal found 4/10![United Airlines logo]()
$934
This Finnair deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/121:29 pm
BOI
- MAD
1 stop16h 01m
Multiple Airlines
Tue 4/287:35 pm
MAD
- BOI
2 stops25h 14m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$935
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Tue 4/1410:35 am
BOI
- MAD
2 stops23h 05m
Lufthansa
Tue 4/287:00 am
MAD
- BOI
2 stops22h 22m
Lufthansa
Deal found 4/6![Lufthansa logo]()
$894
This Expedia deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/42:57 pm
BOI
- MAD
2 stops22h 58m
Multiple Airlines
Thu 5/147:05 am
MAD
- BOI
2 stops24h 53m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$873
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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.
Mon 5/410:35 am
BOI
- MAD
2 stops23h 05m
Lufthansa
Thu 5/147:00 am
MAD
- BOI
2 stops23h 50m
Lufthansa
Deal found 4/6![Lufthansa logo]()
$916
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/44:20 pm
BOI
- MAD
2 stops31h 45m
United Airlines
Wed 6/31:30 pm
MAD
- BOI
2 stops36h 26m
United Airlines
Deal found 4/6![United Airlines logo]()
$924
This Condor deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Thu 5/79:02 am
BOI
- BCN
2 stops23h 03m
Multiple Airlines
Thu 5/148:00 am
BCN
- BOI
2 stops23h 58m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$893
This Expedia deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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.
Thu 5/71:41 pm
BOI
- BCN
2 stops35h 39m
Iberia
Thu 5/1410:45 am
BCN
- BOI
1 stop18h 22m
Iberia
Deal found 4/8![Iberia logo]()
$927
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 5/91:53 pm
BOI
- BCN
2 stops48h 37m
Iberia
Tue 5/1912:30 pm
BCN
- BOI
2 stops40h 37m
Iberia
Deal found 4/7![Iberia logo]()
$901
This Expedia deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 5/91:29 pm
BOI
- BCN
1 stop13h 26m
Finnair
Tue 5/1910:45 am
BCN
- BOI
1 stop19h 53m
Finnair
Deal found 4/7![Finnair logo]()
$931
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/94:20 pm
BOI
- BCN
2 stops32h 00m
United Airlines
Tue 5/193:15 pm
BCN
- BOI
1 stop15h 35m
United Airlines
Deal found 4/7![United Airlines logo]()
$936
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 April 10, 2026.
Search for one-way flight options from Idaho to Spain. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This American Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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.
Sat 8/1512:12 pm
IDA
- BCN
2 stops19h 28m
American Airlines
Deal found 4/9![American Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 9/54:00 pm
GEG
- MAD
2 stops31h 05m
United Airlines
Deal found 4/10![United Airlines logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/214:15 pm
BOI
- BCN
3 stops23h 44m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 8/2611:58 am
GEG
- MAD
3 stops27h 17m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$480
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 9/154:00 pm
GEG
- BCN
2 stops56h 20m
United Airlines
Deal found 4/8![United Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/188:38 pm
GEG
- MAD
3 stops52h 02m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$495
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/287:25 pm
GEG
- MAD
3 stops55h 35m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/222:57 pm
BOI
- BCN
3 stops49h 23m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$504
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/216:00 am
BOI
- MAD
3 stops32h 05m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$511
This KLM deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Sat 9/512:40 pm
GEG
- MAD
1 stop14h 35m
KLM
Deal found 4/7![KLM logo]()
$514
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/273:38 pm
GEG
- MAD
3 stops33h 27m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/239:02 am
BOI
- BCN
1 stop23h 23m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$532
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 April 10, 2026.
Round-trip from | $741 (Delta) |
|---|---|
One-way from | $407 (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 April 10, 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
SpokaneMadrid
GEG - MAD
GEGMAD
Spokane
Tue 9/22
12:45 pm-2:25 pm
1 stop16h 40m
Madrid Barajas
Wed 10/7
3:55 pm-11:58 am
1 stop29h 03m
$800
BoiseMadrid
BOI - MAD
BOIMAD
Boise Air Term. Gowen Fld
Tue 8/11
6:23 am-6:50 am
2 stops40h 27m
Madrid Barajas
Tue 8/25
12:45 pm-5:53 pm
2 stops37h 08m
$861
BoiseMadrid
BOI - MAD
BOIMAD
Boise Air Term. Gowen Fld
Tue 8/11
6:44 am-9:05 am
1 stop18h 21m
Madrid Barajas
Tue 8/25
11:45 am-10:17 pm
2 stops18h 32m
$882
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Sat 5/9
4:20 pm-8:20 am
2 stops32h 00m
Barcelona-El Prat
Tue 5/19
3:15 pm-10:50 pm
1 stop15h 35m
$936
SpokaneMadrid
GEG - MAD
GEGMAD
Spokane
Wed 4/22
6:00 am-2:25 pm
1 stop23h 25m
Madrid Barajas
Wed 4/29
4:20 pm-2:19 pm
2 stops30h 59m
$946
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
Thu 9/3
12:46 pm-4:05 pm
2 stops18h 19m
Barcelona-El Prat
Sat 9/12
8:00 am-9:01 pm
2 stops22h 01m
$950
JacksonBarcelona
JAC - BCN
JACBCN
Jackson Hole
Fri 8/14
1:24 pm-4:30 pm
1 stop19h 06m
Barcelona-El Prat
Sat 8/22
6:30 pm-11:18 am
2 stops24h 48m
$955
SpokaneBarcelona
GEG - BCN
GEGBCN
Spokane
Fri 9/11
4:00 pm-9:20 am
2 stops56h 20m
Barcelona-El Prat
Sun 9/20
10:25 am-12:09 pm
2 stops58h 44m
$976
BoiseBilbao
BOI - BIO
BOIBIO
Boise Air Term. Gowen Fld
Wed 4/22
2:37 pm-11:25 pm
2 stops24h 48m
Bilbao
Wed 5/6
6:50 am-6:15 pm
2 stops19h 25m
$990
Quickest round-trip
BoiseMadrid
BOI - MAD
BOIMAD
Boise Air Term. Gowen Fld
Fri 4/24
2:18 pm-12:15 pm
1 stop13h 57m
Madrid Barajas
Fri 5/1
12:45 pm-10:28 pm
1 stop17h 43m
$992
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-MAD
BOI-BCN
GEG-MAD
JAC-BCN
GEG-BCN
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-MAD
BOI-BCN
GEG-MAD
JAC-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 $476). 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
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Other flight options
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 April 10, 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 April 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$655 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$489 | Average$901 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$493 | Average$715 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$529 | Average$961 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$651 | Average$857 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,145 | Average$1,317 | FlexibilityNo cancel fee | On-time75% |