How to find the cheapest flight from
Boston (BOS) to Cardiff (CWL)
What is the cheapest day to fly round-trip from Boston to Cardiff?
Monday is generally a great day to depart. Flying on this day could help you save up to 69%.
When is the cheapest time to fly from Boston to Cardiff (BOS - CWL)?
It’s typically best to fly out from Boston to Cardiff in the morning. Doing so could potentially save you 6% on the flight price compared to flying at noon, which is usually more expensive.
One-way flights to Cardiff from Boston
The cheapest one-way flights from Boston to Cardiff
3:40 am - 2:30 pm
4:30 pm - 7:20 am
Related info for your journey
Useful info, stats and facts about Boston to Cardiff flights.
Alternative routes for Boston to Cardiff
Destination information for Cardiff
Things to know before you go. Useful info for your trip from Boston to Cardiff