$209+ Cheap flights from Boston (BOS) 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
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Cheapest flights from Boston to SpainExplore the most affordable flight options available from Boston to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
Explore the most affordable flight options available from Boston to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KAYAK deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gurufare deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KAYAK deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” 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.
This SWISS deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flight deals from Boston to Spain
Keep the following information in mind while searching for Boston to Spain flight deals. Data was last updated December 18, 2025.
Round-trip from | $353 (Kiwi.com) |
|---|---|
One-way from | $209 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $718 |
Good round-trip deal | $466 or less |
Good one-way deal | $259 or less |
Cheapflights Fare Finder
Use the filters below to find and compare flights from Boston to Spain that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BostonBilbao
BOS - BIO
BOSBIO
Boston Logan Intl
Mon 2/2
4:45 pm-8:30 am
1 stop9h 45m
Bilbao
Mon 2/9
9:35 pm-3:15 pm
1 stop23h 40m
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 1/18
10:40 pm-11:55 am
Nonstop7h 15m
Barcelona-El Prat
Sun 1/25
6:10 pm-8:55 pm
Nonstop8h 45m
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Sun 3/8
8:50 pm-1:15 pm
1 stop11h 25m
Barcelona-El Prat
Sun 3/15
11:50 am-6:50 pm
1 stop12h 00m
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 2/2
10:40 pm-11:55 am
Nonstop7h 15m
Barcelona-El Prat
Mon 2/16
6:10 pm-8:55 pm
Nonstop8h 45m
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Fri 1/9
7:50 pm-1:35 pm
1 stop11h 45m
Barcelona-El Prat
Fri 2/13
11:50 am-5:50 pm
1 stop12h 00m
BostonBilbao
BOS - BIO
BOSBIO
Boston Logan Intl
Tue 3/10
9:40 pm-9:55 pm
1 stop19h 15m
Bilbao
Mon 3/16
6:50 pm-7:35 pm
1 stop29h 45m
BostonMálaga
BOS - AGP
BOSAGP
Boston Logan Intl
Sun 1/11
1:00 pm-4:55 pm
2 stops21h 55m
Malaga
Tue 1/27
6:05 am-7:33 am
2 stops31h 28m
BostonBilbao
BOS - BIO
BOSBIO
Boston Logan Intl
Mon 3/23
9:40 pm-11:05 pm
1 stop20h 25m
Bilbao
Wed 4/1
7:15 am-1:06 am
2 stops23h 51m
BostonBilbao
BOS - BIO
BOSBIO
Boston Logan Intl
Sun 3/22
9:40 pm-9:55 pm
1 stop19h 15m
Bilbao
Wed 4/1
7:15 am-1:06 am
2 stops23h 51m
BostonBarcelona
BOS - BCN
BOSBCN
Boston Logan Intl
Mon 3/9
11:40 pm-11:55 am
Nonstop7h 15m
Barcelona-El Prat
Thu 3/19
6:10 pm-9:55 pm
Nonstop8h 45m
Best time to book a flight from Boston to Spain
Have a flexible travel schedule? Discover the best time to fly to Spain from Boston with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Boston to Spain
What is the cheapest month to book a flight from Boston to Spain?
Currently, September is the cheapest month in which you can book a flight from Boston to Spain (average of $275). Flying from Boston to Spain in June is currently the most expensive (average of $415). 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.
What is the cheapest time of day to fly from BOS to ES?
Find hourly flight availability from Boston to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.
It’s typically best to fly out from Boston to Spain in the evening. Doing so could potentially save you 10% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from Boston to Spain?
Use this chart to determine the cheapest time to fly round-trip from Boston to Spain. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Boston to Spain flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Boston to Spain
Explore weekly flight availability from Boston to Spain. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 18, 2025.
The most flights from BOS to ES0 are scheduled on a Monday (11 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).
How often are flights from Boston to Spain delayed?
About 9% of weekly flights between Boston and Spain have experienced delays in the past year, with the average delay time being 140 minutes.
What is the most punctual flight time for Boston to Spain flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Spain flights?
Over the last year, Iberia have had the lowest number of delays on this route, with just 6% of flights being delayed.
Reviews of airlines servicing Spain
Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated December 18, 2025.
See what other customers who have flown with American Airlines, TAP AIR PORTUGAL, and Vueling from Boston to Spain have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Food
Crew
Boarding
Overall
Comfort
Reviews
Jeremy,Dec 2025
OKC - CLT
Entertainment
Food
Crew
Boarding
Overall
Comfort
Reviews
Jeremy,Dec 2025
OKC - CLT
Entertainment
Food
Crew
Boarding
Overall
Comfort
Reviews
Jeremy,Dec 2025
OKC - CLT
Entertainment
Food
Crew
Boarding
Overall
Comfort
Reviews
Jeremy,Dec 2025
OKC - CLT
Entertainment
Food
Crew
Boarding
Overall
Comfort
Reviews
Jeremy,Dec 2025
OKC - CLT
Related info for your journey
Find useful and relevant information for your journey from Boston to Spain. 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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Alternative routes for Boston to Spain
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Boston to Spain
Discover the top 10 airlines that operate flights from Boston 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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$484 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$342 | Average$535 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$344 | Average$724 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$349 | Average$533 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$352 | Average$854 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$352 | Average$725 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$355 | Average$437 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$355 | Average$610 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$361 | Average$659 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$372 | Average$656 | FlexibilityNo cancel fee | On-time79% |