Cheap Flights from Boston to Cardiff
No deal from Boston to Cardiff has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Boston to Cardiff, the lowest round-trip fare we recorded was $949, in September. The typical fare was $1062. September was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $1104 on Delta and KLM, seen Oct 28. It is an unverified observation and may have changed.
See every deal <a href="/from/boston">from Boston</a>, <a href="/to/cardiff">to Cardiff</a>, or the return direction <a href="/from/cardiff/to/boston">Cardiff to Boston</a>.
Latest price we saw: Boston to Cardiff
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 |
|---|---|---|---|---|---|---|
| Boston (BOS) to Cardiff (CWL) | $1104 | 17.6¢ | Feb 7 – Feb 13 | Delta and KLM | Oct 28 | Check price |
Price history: Boston to Cardiff
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $1082 | $1098 | 54 |
| Sep 2026 | $949 | $993 | 48 |
| Aug 2026 | $1038 | $1056 | 84 |
| Jul 2026 | $1102 | $1102 | 6 |
Frequently asked questions
How many flight deals from Boston to Cardiff are on Sparkflights right now?
There are 0 verified deals from Boston to Cardiff on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Boston to Cardiff?
The lowest fare we've recorded from Boston to Cardiff is $949, based on 192 price observations over 4 months.
How much does a flight from Boston to Cardiff cost?
The typical round-trip fare we observed from Boston to Cardiff is $1062, against a recorded low of $949. These are observations, not quotes.
When is the cheapest month to fly Boston to Cardiff?
September was the cheapest month we observed from Boston to Cardiff and July the dearest, over 4 months of data.
What is the current price from Boston to Cardiff?
The most recent fare our sweep saw from Boston to Cardiff is $1104, on Oct 28. It is an unverified observation rather than a verified deal, so check it before booking.