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Cheap flights from Cardiff to Boston from £580

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
20 May — 27 May1
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 20 April 2026.

Tue 2/623:15
CWL
-
BOS
2 stops23h 20m
Multiple Airlines
Tue 9/618:50
BOS
-
CWL
2 stops34h 25m
Multiple Airlines
Deal found 18/4£580
Mon 18/522:10
CWL
-
BOS
2 stops24h 25m
Multiple Airlines
Thu 21/510:05
BOS
-
CWL
2 stops31h 15m
Multiple Airlines
Deal found 16/4£629
Sat 17/1017:35
CWL
-
BOS
1 stop24h 40m
KLM
Mon 26/1021:50
BOS
-
CWL
1 stop32h 00m
KLM
Deal found 17/4£769
Tue 20/1012:00
CWL
-
BOS
2 stops29h 30m
British Airways
Tue 3/1107:30
BOS
-
CWL
2 stops23h 00m
British Airways
Deal found 19/4£822
Mon 20/422:10
CWL
-
BOS
2 stops51h 10m
Multiple Airlines
Mon 27/421:15
BOS
-
CWL
1 stop20h 35m
Multiple Airlines
Deal found 19/4£843

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 20 April 2026.

Round-trip from

£580
2/6-9/6
  • 2/6-9/6
  • 4 total stops
  • 57h 45m 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 20 April 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

Tue 2/6

23:15-17:35

2 stops23h 20m

Boston Logan Intl

Tue 9/6

18:50-10:15

2 stops34h 25m

£580
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 18/5

22:10-17:35

2 stops24h 25m

Boston Logan Intl

Thu 21/5

10:05-22:20

2 stops31h 15m

£629

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 17/10

06:45-20:20

3 stops42h 35m

Boston Logan Intl

Mon 26/10

19:00-09:50

3 stops34h 50m

£951

Flights are sorted by cheapest return flights first.

Deals found on 18/4

Sorted by cheapest first

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.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated 20 April 2026.
See what other customers who have flown with KLM and Virgin Atlantic from Cardiff to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,501 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
687 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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.

  • What are the cheapest airlines flying from Cardiff to Boston round-trip?

    Cheapflights users have booked flights from Cardiff to Boston round-trip from £402. Another airline that can offer you cheap pricing is Virgin Atlantic.

  • 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
Waltham
Warwick
Cambridge
Peabody
Somerville
Quincy
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Cardiff to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Cardiff to Boston

Discover the top 2 airlines that operate flights from Cardiff to Boston. 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 858,174 searches. Data last updated 20 April 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£402Average£498FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£443Average£483FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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.

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