Cheap flights from Boston to Cardiff from £255
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Boston to Cardiff
Cheapest flights from Boston to CardiffExplore 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 10 October 2026.
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 10 October 2026.
Best flights from Boston to CardiffDiscover carefully curated flight deals from Boston to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Discover carefully curated flight deals from Boston to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Last-minute flights from Boston to CardiffDiscover last-minute flight deals from Boston to Cardiff. Data last updated 10 October 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Cardiff. Data last updated 10 October 2026 and is based on user searches.
One-way flights from Boston to CardiffSearch for one-way flight options from Boston to Cardiff. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.
Search for one-way flight options from Boston to Cardiff. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.
Find 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 10 October 2026.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Boston to Cardiff that are best for you.
Fly from
Fly to
Route
Depart
Return
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Thu 14/1
17:15-15:40
1 stop17h 25m
Cardiff Wales
Wed 31/12
00:00-18:00
Nonstop0h 00m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Sun 1/11
17:15-08:10
1 stop9h 55m
Cardiff Wales
Wed 31/12
00:00-18:00
Nonstop0h 00m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Wed 2/12
20:55-17:00
1 stop15h 05m
Cardiff Wales
Tue 8/12
17:30-14:20
1 stop25h 50m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Fri 11/12
17:15-08:30
3 stops34h 15m
Cardiff Wales
Mon 14/12
08:35-19:55
2 stops16h 20m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Sun 22/11
18:35-09:45
3 stops34h 10m
Cardiff Wales
Sun 29/11
17:30-22:37
3 stops34h 07m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Mon 16/11
19:25-09:45
1 stop9h 20m
Cardiff Wales
Mon 23/11
17:30-14:13
1 stop25h 43m
BostonCardiff
BOS Boston Logan Intl - CWL Cardiff Wales
BOSCWL
Boston Logan Intl
Wed 2/12
05:30-13:00
3 stops26h 30m
Cardiff Wales
Tue 8/12
12:15-14:20
2 stops31h 05m
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.
Related info for your journey
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Alternative routes for Boston to Cardiff
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Other flights to Cardiff
Explore flights to Cardiff departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.
Complete your trip
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Direct flights to Wales
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Boston and Cardiff flights
Browse other Boston and Cardiff flight options. Last updated on 10 October 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.
Popular flight searches
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How does Cheapflights help users find flights from Boston to Cardiff?
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.