$267 Find Cheap Flights from Spain to Boston - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boston departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Spain to Boston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Spain to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Spain to Boston

Wed, Oct 21 - Tue, Nov 3
United Airlines Logo
3:15 pm - 9:44 am
BCN
-
BOS
24h 29m
2 stops
United Airlines Logo
10:30 am - 8:20 am
BOS
-
BCN
15h 50m
1 stop
$380United Airlines
Thu, Oct 22 - Wed, Nov 4
United Airlines Logo
3:15 pm - 2:35 pm
BCN
-
BOS
29h 20m
2 stops
United Airlines Logo
9:30 am - 8:20 am
BOS
-
BCN
16h 50m
2 stops
$381United Airlines
Sun, Aug 30 - Mon, Sep 7
United Airlines Logo
3:15 pm - 5:52 pm
BCN
-
BOS
32h 37m
2 stops
United Airlines Logo
6:42 pm - 1:15 pm
BOS
-
BCN
12h 33m
1 stop
$382United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
12:00 pm - 11:59 pm
BCN
-
BOS
17h 59m
2 stops
United Airlines Logo
7:38 am - 8:00 am
BOS
-
BCN
18h 22m
2 stops
$383United Airlines
Tue, Sep 15 - Tue, Sep 29
Iberia Logo
10:50 pm - 9:05 pm
BIO
-
BOS
28h 15m
1 stop
Iberia Logo
5:40 pm - 8:50 pm
BOS
-
BIO
21h 10m
1 stop
$414Iberia
Tue, Sep 15 - Tue, Sep 29
Iberia Logo
9:35 pm - 4:10 pm
BIO
-
BOS
24h 35m
1 stop
Iberia Logo
5:40 pm - 3:05 pm
BOS
-
BIO
15h 25m
2 stops
$418Iberia
Thu, Aug 6 - Wed, Aug 19
LEVEL Logo
8:35 am - 9:45 pm
PMI
-
BOS
19h 10m
1 stop
LEVEL Logo
10:55 pm - 9:55 pm
BOS
-
PMI
17h 00m
1 stop
$508LEVEL
Thu, Aug 6 - Wed, Aug 19
LEVEL Logo
8:05 am - 9:45 pm
PMI
-
BOS
19h 40m
1 stop
LEVEL Logo
10:55 pm - 12:40 am
BOS
-
PMI
19h 45m
1 stop
$581LEVEL
Thu, Sep 3 - Fri, Sep 11
Delta Logo
2:35 pm - 4:35 pm
MAD
-
BOS
8h 00mnonstop
Delta Logo
5:30 pm - 6:20 am
BOS
-
MAD
6h 50mnonstop
$606Delta
Fri, Jul 24 - Tue, Jul 28
KLM Logo
6:05 am - 10:43 pm
LPA
-
BOS
21h 38m
2 stops
KLM Logo
5:20 pm - 5:00 pm
BOS
-
LPA
18h 40m
1 stop
$808KLM
Booking Insights

KAYAK's insights & trends for flights to Boston

Get data-powered insights and trends for flights to Boston to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Boston?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to Boston was found on the route from Palma de Mallorca, at $380 return. The most popular connection is from Barcelona to Boston and KAYAK users have found round-trip deals for as low as $380 in the last 5 days.

How much is a flight to Boston?

The average and cheapest price for all round-trip flights to Boston from each origin found by users searching on KAYAK in the last month.

A flight to Boston costs $740 on average. The cheapest price found on KAYAK in the last 2 weeks cost $259 and departed from Barcelona-El Prat Airport. The most popular routes on KAYAK are Barcelona to Boston which costs $779 on average, and Madrid to Boston, which costs $830 on average.

See prices from:

What is the cheapest day to fly to Boston?

The average price of all round-trip flights to Boston clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Boston is Thursday where round-trip tickets can be as cheap as $605. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $922 on average.

What is the cheapest month to fly to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Boston is October, where tickets cost $151 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Spain is $1,126 and $913 respectively. For one-way flights, the best month to travel is January with an average price of $137.

What is the cheapest time of day to fly to Boston?

The average price for all round-trip flights to Boston depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Boston is generally in the evening, when round-trip flights cost $708 on average. The most expensive time of day to fly to Boston is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $824.

What is a good deal for flights to Boston?

If you’re looking for cheap airfare to Boston, 25% of our users found tickets to Boston for the following prices or less: From Barcelona-El Prat Airport $519 round-trip, from Madrid $672 round-trip.

How far in advance should I book a flight to Boston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 3 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$267
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Palma de Mallorca to Boston

Flights from Spain to Boston: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Spain to Boston 
LAURELFlew with Iberia
MAD
-
BOS
Jun 2026
DO NOT SIT IN A SEAT IN FRONT OF AN EXIT ROW.
ErikFlew with Vueling
BCN
-
BOS
Jul 2024
Check in online if you must fly this airline. Avoid excess weight (up to $250 per bag!). Better yet - fly another carrier. Single worst flying experience of my life. And I easily fly 150,000 miles every year with all types of carriers.
CassidyFlew with Iberia
BCN
-
BOS
May 2024
Check to make sure the airline you are booking through is not subcontracting it out to a janky airline to cut costs.

FAQs - booking Boston flights

  • What is the cheapest flight to Boston?

    In the last 5 days, the cheapest flight deal to Boston was found on the route from Palma de Mallorca, at $380 return. The most popular connection is from Barcelona to Boston and KAYAK users have found round-trip deals for as low as $380 in the last 5 days.

  • How far is Boston Logan Intl Airport from central Boston?

    Boston Logan Intl Airport is 3 miles from the center of Boston.

  • What is the name of Boston’s airport?

    All flights to Boston land at Boston Logan Intl Airport. The airport code is BOS,and it can also be referred to as Boston Logan, General Edward Lawrence Logan Intl, or Logan Intl.

  • How much is a flight to Boston?

    On average, a flight to Boston costs $740. The cheapest price found on KAYAK in the last 2 weeks cost $259 and departed from Barcelona-El Prat Airport.

  • How does KAYAK find such low prices on flights to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Boston

  • Looking for cheap airfare to Boston? 25% of our users found round-trip tickets to Boston for the following prices or less: From Barcelona-El Prat $860, from Madrid $923
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boston flight deals.

Reviews of the top 4 airlines serving from Spain to Boston

 
See real verified KAYAK customer reviews for airlines flying to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Spain to Boston. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1533 reviews
7.7Comfort
7.2Entertainment
7.8Boarding
7.3Food
8.4Crew
Airline reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

10.0 ExcellentBob, May 2026
MAD - AMS
Read more KLM reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

If you cant travel Delta One, Comfort Class is the next best thing!

Arrived early, comfortable seats (Comfort+). Mediocre food, poor wifi (intermittent).

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

The tray table was broken and the food was terrible.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

I wish the inflight entertainment system options were broader, but overall this was a fantastic crew and I can’t express how cheerful, welcoming, and attentive they were.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

A nightmare. Scheduled flight delayed 2 hours then cancelled because pilot timed out . Unable to find another pilot. Really?! Weather certainly a factor, but JetBlue seemed totally unprepared for the chaos that ensued when flight routes were cancelled. More cancelled flights, finally many of us who had been bumped from other flights were allowed to board a Boston bound plane around 3:00am, delay after delay, sat on tarmac for another half hour while pilot dealt with weight distribution issues (?), arrived in Boston 4:30. Crew were wonderful- same attendants all day and night and they were exhausted. Fortunately for me and my son that Boston was our final destination, not so lucky for many who missed connecting flights.

The flight was delayed 14 hours and communication was very poor. No one seemed to know what was happening and the gate agent was trying to help people for several flights. She was by herself trying to help 100s of people.

For whatever reason, I could not check in online. Kept getting the "It's not you it's us" message. Even when we tried the kiosk at the airport - same results. The check-in person had a very difficult time getting our boarding passes together despite the fact that we could show confirmation on the jetblue website. After a very long time we finally got boarding passes. The only other issue is, my vegetarian meal featured chicken.

JetBlue worker, Blythe, was so amazing at the DCA counter. If it wasn’t for her, I’m not sure we would’ve made it through. Please thank her!

The flight out was delayed from 3:40pm to 5pm and again to 8pm. We boarded after 5pm, had to disembark because they could not get the Engine started, then we switched gates and got a new plane and did not board until after 8pm.

This was the first flight I've taken since pre-pandemic. I was pleased with how orderly the boarding and disembarking went. The seats were comfortable. I loved that there was no "first class'. The attendants and passengers I met were all very friendly and welcoming.

Boarding was extremely slow and disorganized. Onboard crew was unfriendly.

There was a screen but no earphones that could use the older input so I could listen to anything.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

Boarding was quick and efficient. The flight crew were friendly. There were limited food options available on the flight. The pocket guide said there would be salad and sandwich sections available on flights over 3.5 hours. The only food available were snack boxes. And those were limited as well. My flight was over 5 hours. The entertainment system worked well. I had both extra legroom seats and regular coach seats. The seats were not very comfortable. The entertainment controls in the armrest made it difficult to rest my arm without changing the channel on my neighbors TV. Overall, my experience was mediocre.

The flight from Madrid to Boston was awful. Without prior warning, I was seated in the row in front of an exit row where my seat did not recline. The person in front of me reclined, reducing my already tiny space further. This was the WORST flight I've ever had.

Boarding, crew, food and baggage handling excellent (no bags lost, yay!). However for an 8 hour flight, there were limited entertainment options. And really would have liked to have a pillow!

We flew into Barcelona and the plane was so cramped and very uncomfortable and dirty. But we flew out of Madrid and that plane was much better. Would fly Iberia again.

Boarding was easy, the flight left on time and even landed 20 minutes early. The food was plentiful and really good! The crew was kind & helpful. Overall it was an exceptional experience!

The flight was safe, confortable and convenient. Thank you. I hope to come back soon!

temperature was too cold there should be free blankets, seat are very uncomfortable, entertainment is limited.

Even in the premium economy, I found the seats incredibly uncomfortable. I hated that booking through Kayak, it wasn't clear that it was a Level flight, not Iberia. Everything felt cheaply made and not at all worth the airfare we paid.

I wish they could put the pre-tsa check on the tickets or global entry.

We upgraded to Business class paying approx. $1,300. Despite the upgrade, we were still required to pay an additional €70 for a checked bag. Furthermore, we were informed that another €70 would have been charged for our carry-on bag, as it was 3kg over the limit. To avoid this, we had to move clothing from the carry-on into the checked bag, which was both inconvenient and frustrating. Given the significant amount paid for the Business Class upgrade, we found this treatment to be quite appalling and disappointing. We expected a higher level of service and consideration for our luggage, and this experience did not meet those expectations.

8+ hour flight with no tvs working and no usb port working to charge ones own devices was brutal (traveled with 2 small kids)… yikes

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Everything you need to know for your flight to Boston

Information on the airport you'll fly into in Boston