Cheap Flights from Cardiff to Boston
No deal from Cardiff to Boston has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Cardiff to Boston, the lowest round-trip fare we recorded was $791, in September. The typical fare was $856. September was the cheapest month we saw and October the dearest.
The most recent price we saw on this route was $877 on KLM, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/cardiff">from Cardiff</a>, <a href="/to/boston">to Boston</a>, or the return direction <a href="/from/boston/to/cardiff">Boston to Cardiff</a>.
Latest price we saw: Cardiff to Boston
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Cardiff (CWL) to Boston (BOS) | $877 | 14.0¢ | Nov 9 – Nov 16 | KLM | Oct 16 | Check price |
Price history: Cardiff to Boston
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $843 | $871 | 8 |
| Sep 2026 | $791 | $801 | 4 |
| Aug 2026 | $833 | $894 | 15 |
Frequently asked questions
How many flight deals from Cardiff to Boston are on Sparkflights right now?
There are 0 verified deals from Cardiff to Boston on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Cardiff to Boston?
The lowest fare we've recorded from Cardiff to Boston is $791, based on 27 price observations over 3 months.
How much does a flight from Cardiff to Boston cost?
The typical round-trip fare we observed from Cardiff to Boston is $856, against a recorded low of $791. These are observations, not quotes.
When is the cheapest month to fly Cardiff to Boston?
September was the cheapest month we observed from Cardiff to Boston and October the dearest, over 3 months of data.
What is the current price from Cardiff to Boston?
The most recent fare our sweep saw from Cardiff to Boston is $877, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.