Best time to go: what is the RIGHT price for a round-trip flight to Boston (from: London)

The average price to go to Boston from London airport is $ 549 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 451 (in march) and $ 812 (in august), which is a saving of $ 98 or a surplus of $ 264 (compared to the average price) depending on the period you leave.

The analysis of all prices reveals that the most frequent price is between $472 to $525 and it is generally more economical to leave on a wednesday and return on a monday on a flight with 1 or more layovers.

Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Boston before booking your flight.

If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your London-Boston plane ticket.

How are these data calculated?

We have studied a sample of 60000 airfare prices from previous years for flights to Boston from London and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.

Average price depending on the departure month

Data analysis:

By leaving in march, the price of the plane ticket will statistically be the cheapest ($ 451, saving $ 98 compared to the average price over the year which is $ 549). Conversely, august will be the most expensive ($ 812).

Flight London-Boston: when is the best time to go for the best price?

Month Good price* Average price Our opinion
January$ 403 $ 459 good price
February$ 411 $ 463 good price
March$ 373 $ 451 very good price
April$ 435 $ 554 good price
May$ 428 $ 485 good price
June$ 500 $ 592 fair price
July$ 551 $ 685 fair price
August$ 698 $ 812 very high price
September$ 443 $ 489 good price
October$ 447 $ 537 good price
November$ 425 $ 478 good price
December$ 440 $ 573 fair price

*great price to buy your plane ticket: if you see this price or cheaper during your flight search, go for it and buy it!

Price breakdown to travel from London to Boston

Data analysis:

The prices for flights from London to Boston range from $262 to $1049. 2% of tickets were purchased at the minimum price (from $263 to $315), 1% at the maximum price (from $997 to $1049). The majority of plane tickets were purchased in the range of $472 to $525 (20% of tickets).

Cheapest airlines for the London->Boston flight

There are 13 companies that serve London from Boston airport: Fly Play, British Airways, jetBlue, Virgin Atlantic, Icelandair, EasyJet, Finnair, TAP, Air France, Ryanair, KLM, Iberia and American Airlines.

Data analysis:

Of the 60000 flights analyzed in previous years, Fly Play was the airline that offered the best fare most often in the flight ticket search results (23% of the time) on the London->Boston route.

Direct flight or flight with layover?

Data analysis:

To get the best price for the London-Boston flight, you should take a flight with one or more layovers (you will save an average of $ 192 compared to a direct flight).

Which day of the week to leave?

Data analysis:

Statistically, London-Boston flights departing on a wednesday are cheaper than on other days of the week. By choosing a wednesday as your departure date, you can save an average of $37. On the other hand, departing on a sunday may cost you an additional $75.

Which day of the week to come back?

Data analysis:

Statistically, return flights from Boston to London departing on a monday are cheaper than on other days of the week. By choosing a monday for your return date, you will save an average of $41. Conversely, departing from Boston on a friday may cost you an additional $54.


Top prices London-Boston

Round tripDatesPrice
London → Boston12-01 to 19-01-2025$ 387 
London → Boston10-03 to 18-03-2025$ 335 
London → Boston11-03 to 20-03-2025$ 369 
London → Boston12-03 to 26-03-2025$ 376 
London → Boston14-03 to 20-03-2025$ 393 
London → Boston19-03 to 24-03-2025$ 384 
London → Boston21-03 to 30-03-2025$ 376 
London → Boston03-09 to 09-09-2025$ 387 
London → Boston10-09 to 30-09-2025$ 387 
London → Boston16-09 to 24-09-2025$ 391 


When to book your flight London - Boston to get the cheapest price?

Statistically, you will make the biggest savings by buying your plane ticket between 1 to 2 months in advance. However, you may end up paying a high price if you book between 11 to 12 months in advance.

Did you know: the price of plane tickets not only varies depending on how far in advance you book, but also on the day of the week you book! So, to maximize your chances of getting the best price for a London-Boston flight, it is recommended to book your ticket on a wednesday.

How far in advance should I buy my flight?

Data analysis:

To get the cheapest flight ticket from London to Boston, it is recommended to buy it 1 to 2 months before departure (it is then on average 508 $, which is a saving of 41 $ compared to the overall average price). On the other hand, if you buy your ticket 11 to 12 months in advance, you will pay the full price (137 $ more than the average price).

Depending on the departure month

The best time to buy your London to Boston flight ticket may vary depending on your departure month. Therefore, we offer you statistics on when to book your flight month by month.

Departure on... How far in advance should I book?
January

Best time: 1 to 2 months before departure (average price: 378 $)

Other interesting period(s): 2 to 3 months ($ 431), 3 to 4 months ($ 445)

February

Best time: 2 to 3 months before departure (average price: 396 $)

Other interesting period(s): 1 to 2 months ($ 416), 3 to 4 months ($ 406), 7 to 8 months ($ 433)

March

Best time: 3 to 4 months before departure (average price: 381 $)

Other interesting period(s): 2 to 3 months ($ 414), 4 to 5 months ($ 395), 8 to 9 months ($ 439)

April

Best time: 4 to 5 months before departure (average price: 429 $)

Other interesting period(s): 1 to 2 months ($ 538), 2 to 3 months ($ 554), 3 to 4 months ($ 505), 5 to 6 months ($ 459)

May

Best time: 5 to 6 months before departure (average price: 420 $)

Other interesting period(s): 4 to 5 months ($ 446), 6 to 7 months ($ 433), 10 to 11 months ($ 468)

June

Best time: 6 to 7 months before departure (average price: 509 $)

Other interesting period(s): 5 to 6 months ($ 539), 7 to 8 months ($ 526), 8 to 9 months ($ 536), 9 to 10 months ($ 582)

July

Best time: 7 to 8 months before departure (average price: 573 $)

Other interesting period(s): 1 to 2 months ($ 671), 6 to 7 months ($ 598), 8 to 9 months ($ 589), 9 to 10 months ($ 678), 10 to 11 months ($ 685)

August

Best time: 8 to 9 months before departure (average price: 646 $)

Other interesting period(s): 2 to 3 months ($ 808), 7 to 8 months ($ 803), 9 to 10 months ($ 668), 10 to 11 months ($ 787)

September

Best time: 9 to 10 months before departure (average price: 448 $)

Other interesting period(s): 1 to 2 months ($ 471), 2 to 3 months ($ 455), 3 to 4 months ($ 483), 8 to 9 months ($ 468), 10 to 11 months ($ 470)

October

Best time: 10 to 11 months before departure (average price: 466 $)

Other interesting period(s): 1 to 2 months ($ 519), 3 to 4 months ($ 480), 4 to 5 months ($ 515), 9 to 10 months ($ 483), 11 to 12 months ($ 503)

November

Best time: 0 to 1 month before departure (average price: 433 $)

Other interesting period(s): 1 to 2 months ($ 441), 4 to 5 months ($ 440), 5 to 6 months ($ 462), 6 to 7 months ($ 465), 8 to 9 months ($ 477)

December

Best time: 1 to 2 months before departure (average price: 459 $)

Other interesting period(s): 0 to 1 month ($ 506), 2 to 3 months ($ 572), 3 to 4 months ($ 538), 5 to 6 months ($ 532), 6 to 7 months ($ 567)

What day of the week should I book my flight ticket?

Data analysis:

Statistically, wednesday is the day when plane tickets for London->Boston are the cheapest. So, by buying your plane ticket on a wednesday, you will save $7. Conversely, by buying it on a tuesday, you may end up paying $10 more.



London to Boston: flight price when booking today

Information: this data is not statistics but comes from real prices collected less than 7 days ago. Some months may not be available as we do not have enough data for them.

Month Current price
November 2024$ 822
$676 to $946
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December 2024$ 1049
$498 to $2369
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January 2025$ 738
$387 to $2295
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February 2025$ 498
$400 to $701
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March 2025$ 463
$335 to $591
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April 2025$ 683
$424 to $1081
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May 2025$ 558
$394 to $695
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June 2025$ 619
$463 to $737
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July 2025$ 671
$443 to $1043
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August 2025$ 818
$483 to $1076
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September 2025$ 457
$378 to $637
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October 2025$ 613
$425 to $800
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Data analysis:

Compared to the average price, july and september are cheaper to travel to Boston. So it may be interesting to book now to leave during these months!



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