Find flights
When to book
FAQs

Cheap flights from Cardiff to Boston from £266

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 21/8. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
31 Aug — 7 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Boston

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Boston
Explore the most affordable flight options available from Cardiff to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2026.

Thu 3/911:35
CWL
-
BOS
1 stop12h 00m
Multiple Airlines
Tue 8/920:50
BOS
-
CWL
2 stops21h 35m
Multiple Airlines
Deal found 31/7£546
Sat 12/909:45
CWL
-
BOS
1 stop13h 45m
KLM
Sat 19/916:40
BOS
-
CWL
1 stop19h 05m
KLM
Deal found 29/7£578
Sat 12/909:45
CWL
-
BOS
2 stops18h 25m
Multiple Airlines
Sat 19/916:40
BOS
-
CWL
1 stop11h 35m
Multiple Airlines
Deal found 29/7£585
Thu 17/909:45
CWL
-
BOS
1 stop11h 50m
Virgin Atlantic
Mon 21/920:25
BOS
-
CWL
1 stop15h 20m
Virgin Atlantic
Deal found 29/7£603
Sat 12/909:45
CWL
-
BOS
2 stops18h 25m
Virgin Atlantic
Sat 19/919:35
BOS
-
CWL
2 stops16h 10m
Virgin Atlantic
Deal found 29/7£608
Tue 25/823:15
CWL
-
BOS
2 stops38h 50m
Multiple Airlines
Tue 1/923:35
BOS
-
CWL
1 stop18h 50m
Multiple Airlines
Deal found 28/7£619
Thu 3/909:45
CWL
-
BOS
2 stops17h 58m
KLM
Tue 8/913:32
BOS
-
CWL
2 stops14h 43m
KLM
Deal found 31/7£623
Thu 17/909:00
CWL
-
BOS
2 stops16h 20m
Multiple Airlines
Mon 21/918:05
BOS
-
CWL
2 stops16h 45m
Multiple Airlines
Deal found 27/7£629

Find flight deals from Cardiff to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Boston (BOS). 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 1 August 2026.

Round-trip from

£546

One-way from

£266
3/9-8/9
  • 3/9-8/9
  • 3 total stops
  • 33h 35m total
  • Cardiff to Boston
Search Deals
21/8
  • 21/8
  • 3 total stops
  • 39h 20m total
  • Cardiff to Boston
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Boston 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 858,174 searches. Data last updated 1 August 2026.
Use the filters below to find and compare flights from Cardiff to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 3/9

11:35-18:35

1 stop12h 00m

Boston Logan Intl

Tue 8/9

20:50-23:25

2 stops21h 35m

£546

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 12/9

09:45-18:30

1 stop13h 45m

Boston Logan Intl

Sat 19/9

16:40-16:45

1 stop19h 05m

£578
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 17/9

09:45-16:35

1 stop11h 50m

Boston Logan Intl

Mon 21/9

20:25-16:45

1 stop15h 20m

£603

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 12/9

09:45-23:10

2 stops18h 25m

Boston Logan Intl

Sat 19/9

19:35-16:45

2 stops16h 10m

£608

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 3/9

09:45-22:43

2 stops17h 58m

Boston Logan Intl

Tue 8/9

13:32-09:15

2 stops14h 43m

£623

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 17/9

22:50-21:26

3 stops27h 36m

Boston Logan Intl

Mon 21/9

20:50-22:50

3 stops21h 00m

£668

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 8/9

11:35-18:35

1 stop12h 00m

Boston Logan Intl

Thu 10/9

15:35-22:20

3 stops25h 45m

£686

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 13/8

09:45-16:37

1 stop11h 52m

Boston Logan Intl

Sun 16/8

16:45-16:45

1 stop19h 00m

£734
Cheapest one-way
Fastest single journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 22/8

11:35-09:05

1 stop26h 30m

£360

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 22/8

11:35-19:15

2 stops36h 40m

£536

Flights are sorted by cheapest return flights first.

Deals found on 28/7

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Cardiff to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Cardiff with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Cardiff to Boston?

    Airlines like KLM and Virgin Atlantic fly from Cardiff to Boston in about 11h 50m. The time it takes to get you to your destination can typically vary by up to 1h 55m. The distance from Cardiff to Boston is about 3137 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Cardiff to Boston that include hotel bookings?

    Yes. In addition to deals on Cardiff to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Boston.

  • Can I find deals for business class flights from Cardiff to Boston?

    Yes. Cheapflights offers flight deals from Cardiff to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Burlington
Canton
North Truro
Waltham
Warwick
Cambridge
Peabody
Wellfleet
Revere
Somerville
Quincy
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Manchester to Boston flights
Bristol to Boston flights
Manchester to Hartford flights
Bristol to Hartford flights
Manchester to Worcester flights
Cardiff to Hartford flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Boston?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Cardiff to Boston. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Boston?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Boston from Cardiff.

Can Cheapflights find flights from Cardiff to Boston with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Cardiff to Boston, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Cardiff to Boston become cheaper?

Yes! Start tracking prices for Cardiff to Boston flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.