Cheap flights from Cardiff to Boston from £437
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Boston departing on 17/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Cardiff to Boston
Cheap return flights
Virgin Atlantic flights from Cardiff to Boston
Our best Virgin Atlantic deals on Cardiff to Boston flight tickets
KLM flights from Cardiff to Boston
Our best KLM deals on Cardiff to Boston flight tickets
See travel insights to Boston from
How to get the cheapest flight ticket from Cardiff to Boston
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Boston?
The cheapest day to depart on your flight to Boston is on a Tuesday when prices can be found for as low as £463. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £771. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.
What is the cheapest time of day to depart on your flight to Boston?
Our most recent data shows that the best time of day to fly to Boston is in the morning. Flights from Cardiff to Boston during this time can be as low as £506. In the afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around £671 per ticket.
When to book flights from Cardiff to Boston
Cheap Cardiff to Boston (CWL to BOS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Cardiff to Boston
How far is Cardiff Wales to Boston Logan Intl by plane?
The straight-line distance from Cardiff Wales to Boston Logan Intl is 3144.0 mi. A reasonable flight in good conditions will take 11h 40m.
When did momondo last update prices for flights from Cardiff Wales Airport to Boston Logan Intl Airport?
Prices for flights from Cardiff Wales Airport to Boston Logan Intl Airport were last updated today.
How many operators does momondo search for flights from Cardiff Wales Airport to Boston Logan Intl Airport?
As of June 2025, there is 1 operator available to choose from for flights from Cardiff Wales Airport to Boston Logan Intl Airport.
How old do you have to be to fly from Cardiff Wales Airport to Boston Logan Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cardiff Wales Airport to Boston Logan Intl Airport.
What documentation or ID do you need to fly to Boston Logan Intl Airport?
The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Cardiff to Boston?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Cardiff to Boston is KLM (100% of total bookings).
Best airlines flying from Cardiff to Boston
Compare and see reviews for airlines that fly from Cardiff to Boston with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £414 | Free Cancellation | Rating 7.8 1,363 reviews |
Travelling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Cardiff to Boston?
Finding the right flight to Boston from Cardiff is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Boston quick and easy, saving you time and money.
Can I find flights from Cardiff to Boston with flexible booking policies on momondo?
momondo does allow users to show only those flights to Boston from Cardiff which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Cardiff to Boston?
momondo helps you find the best flight between Cardiff and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Cardiff to Boston right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Boston from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.