$397+ Cheap flights from Boise (BOI) to Barcelona
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BCN
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Barcelona with Cheapflights
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Best
Last-minute
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Cheapest flights from Boise to BarcelonaExplore the most affordable flight options available from Boise to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from Boise to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This Priceline deal was found by Cheapflights users on 7/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:19 pm
BOI
- BCN
2 stops19h 21m
Iberia
Wed 10/2810:40 am
BCN
- BOI
1 stop18h 49m
Iberia
Deal found 7/22![Iberia logo]()
$770
This Finnair deal was found by Cheapflights users on 7/22. 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.
Tue 10/207:00 am
BOI
- BCN
1 stop19h 10m
Finnair
Wed 10/2810:40 am
BCN
- BOI
1 stop18h 49m
Finnair
Deal found 7/22![Finnair logo]()
$774
This American Airlines deal was found by Cheapflights users on 7/23. 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.
Wed 12/91:25 pm
BOI
- BCN
2 stops17h 15m
American Airlines
Tue 12/1512:00 pm
BCN
- BOI
2 stops19h 39m
American Airlines
Deal found 7/23![American Airlines logo]()
$775
This CheapOair deal was found by Cheapflights users on 7/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:25 am
BOI
- BCN
2 stops17h 35m
Air Canada
Wed 10/2812:35 pm
BCN
- BOI
2 stops28h 03m
Air Canada
Deal found 7/22![Air Canada logo]()
$780
This FlightHub deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am
BOI
- BCN
2 stops19h 00m
Air Canada
Thu 10/2212:15 pm
BCN
- BOI
2 stops41h 20m
Air Canada
Deal found 7/19![Air Canada logo]()
$786
This Mytrip deal was found by Cheapflights users on 7/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am
BOI
- BCN
2 stops20h 20m
Multiple Airlines
Wed 10/287:30 am
BCN
- BOI
2 stops21h 00m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$787
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 10/143:24 pm
BOI
- BCN
2 stops19h 11m
American Airlines
Thu 10/221:30 pm
BCN
- BOI
1 stop16h 59m
American Airlines
Deal found 7/19![American Airlines logo]()
$800
This Air Canada deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am
BOI
- BCN
3 stops20h 20m
Multiple Airlines
Thu 10/2212:15 pm
BCN
- BOI
2 stops29h 19m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$829
Best flights from Boise to BarcelonaDiscover carefully curated flight deals from Boise to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from Boise to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This FlightHub deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am
BOI
- BCN
2 stops19h 00m
Air Canada
Thu 10/2212:15 pm
BCN
- BOI
2 stops41h 20m
Air Canada
Deal found 7/19![Air Canada logo]()
$786
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Thu 8/2010:15 am
BCN
- BOI
2 stops18h 18m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$951
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 7/24![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 8/227:05 pm
BOI
- BCN
1 stop35h 15m
United Airlines
Sun 8/3012:15 pm
BCN
- BOI
2 stops41h 22m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,005
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/68:25 am
BOI
- BCN
1 stop20h 50m
United Airlines
Fri 8/213:15 pm
BCN
- BOI
1 stop15h 38m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,058
Last-minute flights from Boise to BarcelonaDiscover last-minute flight deals from Boise to Barcelona. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Barcelona. Data last updated July 24, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Thu 8/2010:15 am
BCN
- BOI
2 stops18h 18m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$951
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/1010:52 am
BOI
- BCN
2 stops27h 18m
Multiple Airlines
Fri 8/218:00 am
BCN
- BOI
2 stops22h 33m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$966
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 7/24![United Airlines logo]()
$993
This CheapOair deal was found by Cheapflights users on 7/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:30 am
BOI
- BCN
2 stops17h 30m
Air Canada
Sun 9/1312:15 pm
BCN
- BOI
2 stops35h 16m
Air Canada
Deal found 7/21![Air Canada logo]()
$950
This KAYAK deal was found by Cheapflights users on 7/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:05 pm
BOI
- BCN
1 stop35h 15m
Lufthansa
Sun 9/1312:15 pm
BCN
- BOI
2 stops53h 20m
Lufthansa
Deal found 7/21![Lufthansa logo]()
$985
This Condor deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/2110:14 am
BOI
- BCN
2 stops27h 56m
Multiple Airlines
Fri 8/288:00 am
BCN
- BOI
2 stops23h 44m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$990
This CheapOair deal was found by Cheapflights users on 7/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:14 am
BOI
- BCN
2 stops21h 51m
Multiple Airlines
Sun 8/308:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$940
This Expedia deal was found by Cheapflights users on 7/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:17 pm
BOI
- BCN
2 stops23h 53m
Multiple Airlines
Thu 8/278:00 am
BCN
- BOI
2 stops22h 27m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$939
One-way flights from Boise to BarcelonaSearch for one-way flight options from Boise to Barcelona. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from Boise to Barcelona. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:52 pm
BOI
- BCN
3 stops41h 23m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Thu 11/51:27 pm
BOI
- BCN
2 stops15h 53m
American Airlines
Deal found 7/19![American Airlines logo]()
$407
This TravelUp deal was found by Cheapflights users on 7/19. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:32 pm
BOI
- BCN
1 stop16h 43m
Lufthansa
Deal found 7/19![Lufthansa logo]()
$408
This deal was found by Cheapflights users on 7/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:32 pm
BOI
- BCN
1 stop16h 43m
United Airlines
Deal found 7/22![United Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:52 pm
BOI
- BCN
3 stops32h 48m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Thu 8/2012:24 pm
BOI
- BCN
3 stops22h 46m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$437
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:02 pm
BOI
- BCN
2 stops18h 23m
American Airlines
Deal found 7/22![American Airlines logo]()
$460
This Air Canada deal was found by Cheapflights users on 7/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:00 am
BOI
- BCN
3 stops20h 20m
Air Canada
Deal found 7/23![Air Canada logo]()
$472
Find flight deals from Boise to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.
Round-trip from | $770 (Priceline) |
|---|---|
One-way from | $397 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,159 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Barcelona 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 24, 2026.
Use the filters below to find and compare flights from Boise to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Wed 10/14
5:00 am-8:00 am
2 stops19h 00m
Barcelona-El Prat
Thu 10/22
12:15 pm-9:35 pm
2 stops41h 20m
$786
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Sun 8/9
10:52 am-10:10 pm
2 stops27h 18m
Barcelona-El Prat
Thu 8/20
10:15 am-8:33 pm
2 stops18h 18m
$951
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Mon 8/10
10:35 am-2:20 pm
1 stop19h 45m
Barcelona-El Prat
Fri 8/21
12:15 pm-5:58 pm
2 stops37h 43m
$993
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Sat 8/22
7:05 pm-2:20 pm
1 stop35h 15m
Barcelona-El Prat
Sun 8/30
12:15 pm-9:37 pm
2 stops41h 22m
$1,005
Quickest round-trip
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Thu 8/6
8:25 am-1:15 pm
1 stop20h 50m
Barcelona-El Prat
Fri 8/21
3:15 pm-10:53 pm
1 stop15h 38m
$1,058
Cheapest one-way
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Thu 11/5
3:52 pm-9:05 am
3 stops57h 13m
$401
Quickest one-way
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Thu 11/5
1:27 pm-1:20 pm
2 stops15h 53m
$407
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Fri 11/6
1:27 pm-4:30 pm
2 stops19h 03m
$407
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Thu 11/5
12:32 pm-1:15 pm
1 stop16h 43m
$408
BoiseBarcelona
BOI - BCN
BOIBCN
Boise Air Term. Gowen Fld
Fri 11/6
12:32 pm-1:15 pm
1 stop16h 43m
$410
Showing 1-10 of 14 resultsSorted by cheapest first
Best time to book a flight from Boise to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Boise with our price prediction graph.
BOI-S37
BOI-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 Boise to Barcelona
BOI-S37
BOI-BCN
What is the cheapest month to book a flight from Boise to Barcelona?
Currently, February is the cheapest month in which you can book a flight from Boise to Barcelona (average of $504). Flying from Boise to Barcelona in June is currently the most expensive (average of $3,383). 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.
How much does it cost to fly round-trip from Boise to Barcelona?
Airfare is below average for this route at the moment.
Boise to Barcelona flights typically cost between $952 and $1,158 in October.The cheapest round-trip price found within the last 5 days was $770 on Iberia (Oct 20-Oct 28).
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated July 24, 2026.
Read through reviews of airlines operating flights from Boise to Barcelona, such as Delta,United Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Boise to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Boise to Barcelona
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Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boise to Barcelona by cabin class
Find flights from Boise to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boise and Barcelona flights
Browse other Boise and Barcelona flight options. Last updated on July 24, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Boise to Barcelona
Discover the top 4 airlines that operate flights from Boise to Barcelona. 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 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$1,142 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$498 | Average$812 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$599 | Average$1,044 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$856 | Average$869 | FlexibilityNo cancel fee | On-time67% |