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Cheap flights from Boston to Cardiff from £618

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CWL
26 Jan — 2 Feb1
1 adult

Cheap flight deals from Boston to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cardiff (CWL). 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 21 January 2025.

Round-trip from

£618

Popular in

March

Cheapest in

October
KLM
  • KLM
  • 18/2-25/2
  • 2 total stops
  • 41h 49m total
  • Boston to Cardiff
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£40 potential savings vs. average return price).
Search Deals

Find flight deals from Boston to Cardiff

Cheapest flights from Boston to Cardiff
Explore the most affordable flight options available from Boston to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2025.

Tue 18/219:11BOS - CWL
1 stop9h 39mKLM
Tue 25/210:25CWL - BOS
1 stop32h 10mKLM
Deal found 20/1£618
Wed 26/320:05BOS - CWL
1 stop9h 45mVirgin Atlantic
Sun 30/317:15CWL - BOS
2 stops19h 05mVirgin Atlantic
Deal found 21/1£641
Wed 26/311:40BOS - CWL
2 stops25h 15mDelta
Sun 30/309:50CWL - BOS
2 stops26h 31mDelta
Deal found 21/1£644
Wed 26/319:20BOS - CWL
3 stops20h 25mMultiple Airlines
Sun 30/320:45CWL - BOS
3 stops26h 15mMultiple Airlines
Deal found 21/1£759
Fri 21/217:45BOS - CWL
1 stop20h 20mAer Lingus
Sun 23/209:35CWL - BOS
2 stops28h 16mAer Lingus
Deal found 21/1£836

Find flights from Boston to Cardiff within your budget

Customise your flight search to find flights from Boston to Cardiff 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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 18/2

19:11-09:50

1 stop9h 39m

Cardiff Wales

Tue 25/2

10:25-13:35

1 stop32h 10m

£618

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 26/3

20:05-09:50

1 stop9h 45m

Cardiff Wales

Sun 30/3

17:15-07:20

2 stops19h 05m

£641

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 26/3

11:40-16:55

2 stops25h 15m

Cardiff Wales

Sun 30/3

09:50-07:21

2 stops26h 31m

£644

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 26/3

19:20-19:45

3 stops20h 25m

Cardiff Wales

Sun 30/3

20:45-18:00

3 stops26h 15m

£759

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Fri 21/2

17:45-19:05

1 stop20h 20m

Cardiff Wales

Sun 23/2

09:35-08:51

2 stops28h 16m

£836

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Best time to book a flight from Boston to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Boston 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.

Travel insights for flights from Boston to Cardiff

Get recent, data-driven insights about flights from Boston to Cardiff including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Boston to Cardiff?

Currently, July is the cheapest month in which you can book a flight from Boston to Cardiff (average of £169). Flying from Boston to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Cardiff by month

Plan your trip to Cardiff by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

Temperature in Cardiff by month

Plan your trip to Cardiff by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. 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 Cardiff. Reviews last updated 21 January 2025.
Delta
8.0
Very Good
8,521 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,521 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.1
Good
1,082 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Boston to Cardiff. 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 Boston to Cardiff round-trip?

    Cheapflights users have booked flights from Boston to Cardiff round-trip from £618. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £641, and Delta, from £644. KLM is 31% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Boston to Cardiff?

    Currently, July is the cheapest month in which you can book a flight from Boston to Cardiff (average of £169). Flying from Boston to Cardiff in December is currently the most expensive (average of £263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Barry
Bridgend

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Cheapflights makes it easy to find Boston to Cardiff flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to Cardiff from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from Boston to Cardiff with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Boston to Cardiff flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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