Cheap Flights from Cardiff to Washington, D.C.
No deal from Cardiff to Washington, D.C. has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Cardiff to Washington, D.C., the lowest round-trip fare we recorded was $792, in October. The typical fare was $882. October was the cheapest month we saw and September the dearest.
The most recent price we saw on this route was $900 on Delta and 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/washington-dc">to Washington, D.C.</a>, or the return direction <a href="/from/washington-dc/to/cardiff">Washington, D.C. to Cardiff</a>.
Latest price we saw: Cardiff to Washington, D.C.
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 Washington, D.C. (DCA) | $900 | 12.7¢ | Nov 7 – Nov 13 | Delta and KLM | Oct 16 | Check price |
Price history: Cardiff to Washington, D.C.
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $792 | $858 | 7 |
| Sep 2026 | $887 | $898 | 4 |
| Aug 2026 | $875 | $891 | 14 |
Frequently asked questions
How many flight deals from Cardiff to Washington, D.C. are on Sparkflights right now?
There are 0 verified deals from Cardiff to Washington, D.C. on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Cardiff to Washington, D.C.?
The lowest fare we've recorded from Cardiff to Washington, D.C. is $792, based on 25 price observations over 3 months.
How much does a flight from Cardiff to Washington, D.C. cost?
The typical round-trip fare we observed from Cardiff to Washington, D.C. is $882, against a recorded low of $792. These are observations, not quotes.
When is the cheapest month to fly Cardiff to Washington, D.C.?
October was the cheapest month we observed from Cardiff to Washington, D.C. and September the dearest, over 3 months of data.
What is the current price from Cardiff to Washington, D.C.?
The most recent fare our sweep saw from Cardiff to Washington, D.C. is $900, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.