CWL - BOS

$458 Find Cheap Flights from Cardiff to Boston - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$554
Typical prices: $811-$1,240
Multiple Airlines
Thu 11/1Thu 11/8
CWL - BOS • 1 stop
Cheapest one-way
$458
Typical prices: $499-$1,979
Multiple Airlines
Sun 1/7
CWL - BOS • 2 stops
When to travel
July
Cheapest • 16% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg $669 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 11h 02m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boston!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Cardiff to Boston (CWL-BOS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Cardiff to Boston

Sun, Nov 1 - Sun, Nov 8
Multiple Airlines Logo
11:50 pm - 1:55 pmCWL  Cardiff Wales-BOS Boston Logan Intl
19h 05m1 stop Dublin
Multiple Airlines Logo
5:15 pm - 8:10 amBOS  Boston Logan Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
$554Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
1:25 pm - 8:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
10h 40m1 stop Dublin
Multiple Airlines Logo
9:20 pm - 3:40 pmBOS  Boston Logan Intl-CWL Cardiff Wales
13h 20m1 stop Dublin
$634Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
1:25 pm - 8:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
10h 40m1 stop Dublin
Multiple Airlines Logo
9:20 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
31h 30m2 stops Dublin Amsterdam Schiphol
$773Multiple Airlines
Sun, Nov 1 - Sun, Nov 8
KLM Logo
5:30 pm - 2:13 pmCWL  Cardiff Wales-BOS Boston Logan Intl
25h 43m1 stop Amsterdam Schiphol
KLM Logo
1:35 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
15h 15m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$807KLM
Sun, Nov 1 - Sun, Nov 8
Multiple Airlines Logo
10:20 am - 11:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
17h 45m2 stops Amsterdam Schiphol New York John F Kennedy Intl
Multiple Airlines Logo
1:35 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
15h 15m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$817Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
KLM Logo
5:30 pm - 11:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
33h 35m2 stops Amsterdam Schiphol New York John F Kennedy Intl
KLM Logo
9:10 am - 5:00 pmBOS  Boston Logan Intl-CWL Cardiff Wales
26h 50m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$844KLM
Wed, Dec 16 - Mon, Dec 21
Multiple Airlines Logo
10:20 am - 2:20 pmCWL  Cardiff Wales-BOS Boston Logan Intl
33h 00m1 stop Amsterdam Schiphol
Multiple Airlines Logo
7:25 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
9h 25m1 stop Amsterdam Schiphol
$948Multiple Airlines
Wed, Dec 16 - Mon, Dec 21
Multiple Airlines Logo
10:20 am - 11:59 pmCWL  Cardiff Wales-BOS Boston Logan Intl
18h 39m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
Multiple Airlines Logo
7:25 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
9h 25m1 stop Amsterdam Schiphol
$1,017Multiple Airlines
Wed, Dec 16 - Mon, Dec 21
Multiple Airlines Logo
10:20 am - 2:22 pmCWL  Cardiff Wales-BOS Boston Logan Intl
33h 02m2 stops Amsterdam Schiphol Paris Charles de Gaulle
Multiple Airlines Logo
9:35 pm - 5:00 pmBOS  Boston Logan Intl-CWL Cardiff Wales
14h 25m2 stops Lisbon Humberto Delgado Amsterdam Schiphol
$1,137Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
10:20 am - 4:45 pmCWL  Cardiff Wales-BOS Boston Logan Intl
34h 25m3 stops Amsterdam Schiphol Helsinki-Vantaa Kastrup Copenhagen
Multiple Airlines Logo
5:35 pm - 9:50 amBOS  Boston Logan Intl-CWL Cardiff Wales
35h 15m3 stops Kastrup Copenhagen Helsinki-Vantaa Amsterdam Schiphol
$1,186Multiple Airlines
Booking Insights

Price, demand and travel trends for Cardiff to Boston flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Cardiff to Boston with more confidence.

What is the cheapest airline to fly from Cardiff to Boston?

KLM ($807) offered the cheapest round-trip ticket from Cardiff to Boston in the last 5 days.

Find deals

Key details for Cardiff to Boston flights

Low season

February

Cheapest flight

$458
Most popular time to fly with an average 474% increase in price.
Flight from Cardiff to Boston

When to book flights from Cardiff to Boston

Are your dates flexible? Find out the best times to travel from Cardiff to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Cardiff to Boston flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Cardiff to Boston?

    Flights from Cardiff to Boston usually depart from Cardiff Wales (CWL) and arrive at Boston Logan Intl (BOS).

  • What cabin classes can I book on flights from Cardiff to Boston?

    Only Economy Class is available on flights from Cardiff to Boston.

  • Which airports do connecting flights from Cardiff to Boston pass through?

    Connecting flights from Cardiff to Boston most commonly pass through:

    • Amsterdam Schiphol (AMS) - 92% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 8% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Cardiff to Boston?

    Yes. Being flexible with your travel dates can save you up to 88% on the Cardiff to Boston route. Monday is the cheapest departure day at $669 round-trip on average, while Saturday is the most expensive at $5,552, a difference of $4,883. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are Fenway Park, TD Garden and South Station. These are among the most viewed places in Boston on KAYAK.

  • How long is a flight from Cardiff to Boston?

    There are currently no nonstop flights available from Cardiff to Boston. Flights with 1 layover take between 11h 02m and 20h 04m in total, depending on the connection.

  • Do I need a passport to fly from Cardiff to Boston?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Cardiff to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $554 to $1,692. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Cardiff to Boston looking right now?

    One-way fares from Cardiff to Boston are currently lower than usual. Average one-way flight prices are about $681, which is 32% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Cardiff to Boston?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 11h 02m, compared with 20h 04m via Toronto Pearson Intl (YYZ).

  • What is the time difference between Cardiff and Boston?

    Boston is 5 hours behind Cardiff (Eastern Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • How much should I expect to pay for a Cardiff to Boston flight?

    Round-trip flights from Cardiff to Boston range from $811 to $1,240, with an average of $968 over the past 12 months. Anything below $811 counts as a good deal.

Your guide to booking Cardiff to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $669 - about $4,883 less than Saturday (88% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Cardiff to Boston trip for July. Fares historically average $811 round-trip in that month - typically $4,895 less than the most expensive month, which is August (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.
    - Embassy Suites by Hilton Boston at Logan Airport
    - Hilton Garden Inn Boston Logan Airport
    - Hilton Boston Logan Airport

More options for your flight from Cardiff to Boston

Complete your trip to Boston with a hotel stay or car rental

Car rentals in Boston
Hotels in Boston
Vacations in Boston