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Cheap flights from Cardiff to Boston from £412

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 23/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
31 May — 7 Jun1
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 May 2026.

Thu 11/622:50
CWL
-
BOS
3 stops39h 55m
Multiple Airlines
Thu 18/610:05
BOS
-
CWL
2 stops31h 15m
Multiple Airlines
Deal found 27/4£721
Thu 28/511:35
CWL
-
BOS
2 stops35h 05m
WestJet
Mon 1/618:30
BOS
-
CWL
2 stops58h 45m
WestJet
Deal found 29/4£1,100

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 May 2026.

Round-trip from

£721

One-way from

£412
11/6-18/6
  • 11/6-18/6
  • 5 total stops
  • 71h 10m total
  • Cardiff to Boston
Search Deals
23/5
  • 23/5
  • 3 total stops
  • 36h 10m 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 May 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
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 11/6

22:50-09:45

3 stops39h 55m

Boston Logan Intl

Thu 18/6

10:05-22:20

2 stops31h 15m

£721

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 28/5

11:35-17:40

2 stops35h 05m

Boston Logan Intl

Mon 1/6

18:30-10:15

2 stops58h 45m

£1,100
Cheapest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 23/5

07:30-14:40

3 stops36h 10m

£412
Fastest single journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 15/6

17:15-16:35

1 stop28h 20m

£1,393

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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 1 May 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
1,511 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,511 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.4
Good
688 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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.
Manchester to Boston flights
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Manchester to Worcester flights

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 1 May 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£402Average£497FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£442Average£482FlexibilityNo 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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