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Cheap flights from Boston (BOS) to Cardiff (CWL) from $446

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — CWL
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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Cheap flight deals from Boston to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cardiff (CWL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Popular in

December

Cheapest in

October

Round-trip from

$708

One-way from

$602
High demand for flights, 28% potential price rise
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Best time to find cheap flights, 31% potential price drop
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From Boston Logan Intl to Cardiff Wales
Search Deals
One-way flight from Boston Logan Intl to Cardiff Wales
Search Deals

What is the cheapest day to fly round-trip from Boston to Cardiff?

Sunday is generally a great day to depart. Flying on this day could help you save up to 51%.

What is the cheapest month to fly from Boston to Cardiff?

The best pricing can be found in the month of October. Prices to Cardiff from Boston average $1,008. You can even find prices in October for less than $1,008, as users have found deals to Cardiff from as low as $421. The month of December appears to be one of the more expensive times to travel to Cardiff from Boston. Flying in the targeted month can save you up to 38%.

When is the cheapest time to fly from Boston to Cardiff (BOS - CWL)?

A simple way to save on the total cost of your ticket is to fly from Boston to Cardiff at noon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

Cheap Delta flights from Boston to Cardiff

Explore cheap flight options specifically provided by Delta for the route between Boston and Cardiff. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Peruse some of the lowest-priced Delta flights we've found from Boston to Cardiff. Deals update often to give you more flight options matching your criteria
Wed 8/217:00 pmBOS - CWL
1 stop9h 15mDelta
Tue 9/39:45 amCWL - BOS
1 stop11h 55mDelta
Deal found 5/15$795
Sun 8/255:30 amBOS - CWL
2 stops22h 45mDelta
Wed 9/49:45 amCWL - BOS
1 stop33h 05mDelta
Deal found 5/15$800
Wed 8/218:25 pmBOS - CWL
1 stop31h 50mDelta
Wed 9/49:45 amCWL - BOS
2 stops17h 30mDelta
Deal found 5/15$806
Sun 8/257:00 amBOS - CWL
2 stops21h 15mDelta
Tue 9/39:45 amCWL - BOS
2 stops20h 29mDelta
Deal found 5/15$810
Fri 8/237:00 pmBOS - CWL
1 stop9h 15mDelta
Thu 9/59:45 amCWL - BOS
1 stop11h 55mDelta
Deal found 5/15$845
Wed 8/216:00 amBOS - CWL
2 stops22h 15mDelta
Thu 9/59:45 amCWL - BOS
2 stops17h 59mDelta
Deal found 5/15$848
Sat 8/247:00 pmBOS - CWL
1 stop9h 15mDelta
Tue 9/39:45 amCWL - BOS
1 stop11h 55mDelta
Deal found 5/15$943
Sun 7/215:20 amBOS - CWL
2 stops22h 55mDelta
Fri 8/169:45 amCWL - BOS
1 stop13h 45mDelta
Deal found 5/15$979
Mon 7/222:00 pmBOS - CWL
2 stops14h 15mDelta
Fri 8/169:45 amCWL - BOS
2 stops15h 05mDelta
Deal found 5/15$989

Cheap KLM flights from Boston to Cardiff

Explore cheap flight options specifically provided by KLM for the route between Boston and Cardiff. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Have a look at some of the cheapest available KLM flights departing from Boston and landing in Cardiff. Make sure to examine the flight information before completing your reservation.
Thu 10/244:50 pmBOS - CWL
1 stop18h 55mKLM
Mon 10/286:00 amCWL - BOS
2 stops15h 47mKLM
Deal found 5/15$850
Tue 6/114:40 pmBOS - CWL
1 stop11h 35mKLM
Tue 6/189:45 amCWL - BOS
1 stop11h 50mKLM
Deal found 5/15$891
Tue 6/114:40 pmBOS - CWL
1 stop19h 05mKLM
Tue 6/189:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/15$901
Tue 6/116:50 pmBOS - CWL
1 stop9h 25mKLM
Tue 6/189:45 amCWL - BOS
1 stop13h 45mKLM
Deal found 5/16$906
Tue 6/118:25 pmBOS - CWL
1 stop15h 20mKLM
Tue 6/189:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/16$916
Thu 6/134:40 pmBOS - CWL
1 stop11h 35mKLM
Wed 6/199:45 amCWL - BOS
1 stop11h 50mKLM
Deal found 5/15$939
Thu 6/133:29 pmBOS - CWL
2 stops12h 46mKLM
Wed 6/199:45 amCWL - BOS
1 stop13h 45mKLM
Deal found 5/15$944
Thu 10/174:50 pmBOS - CWL
1 stop11h 25mKLM
Sun 10/2710:15 amCWL - BOS
1 stop13h 50mKLM
Deal found 5/15$946
Thu 6/133:29 pmBOS - CWL
2 stops12h 46mKLM
Wed 6/199:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/15$954

Cheap Boston to Cardiff flights in May & June 2024

Find cheap flight options from Boston to Cardiff specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Check out some of the best flight deals from Boston to Cardiff in 2024. Check back regularly for other flight deals.
Tue 6/118:25 pmBOS - CWL
1 stop15h 20mVirgin Atlantic
Tue 6/189:45 amCWL - BOS
1 stop13h 45mVirgin Atlantic
Deal found 5/15$889
Tue 6/114:40 pmBOS - CWL
1 stop11h 35mKLM
Tue 6/189:45 amCWL - BOS
1 stop11h 50mKLM
Deal found 5/15$891
Tue 6/114:40 pmBOS - CWL
1 stop19h 05mKLM
Tue 6/189:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/15$901
Tue 6/118:25 pmBOS - CWL
1 stop15h 20mVirgin Atlantic
Tue 6/189:45 amCWL - BOS
1 stop13h 45mVirgin Atlantic
Deal found 5/16$902
Tue 6/114:40 pmBOS - CWL
1 stop11h 35mKLM
Tue 6/189:45 amCWL - BOS
1 stop11h 50mKLM
Deal found 5/16$906
Tue 6/114:40 pmBOS - CWL
1 stop19h 05mKLM
Tue 6/189:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/16$916
Thu 6/134:40 pmBOS - CWL
1 stop11h 35mKLM
Wed 6/199:45 amCWL - BOS
1 stop11h 50mKLM
Deal found 5/15$939
Thu 6/133:29 pmBOS - CWL
2 stops12h 46mKLM
Wed 6/199:45 amCWL - BOS
1 stop13h 45mKLM
Deal found 5/15$944
Thu 6/133:29 pmBOS - CWL
2 stops12h 46mKLM
Wed 6/199:45 amCWL - BOS
2 stops13h 55mKLM
Deal found 5/15$954

Boston to Cardiff 2024 flight deals

Discover exclusive flight deals for travel between Boston and Cardiff in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Check out some of the best flight deals from Boston to Cardiff in 2024. Check back regularly for other flight deals.
Thu 10/247:15 pmBOS - CWL
1 stop10h 25mPLAY
Mon 10/2810:40 amCWL - BOS
1 stop11h 20mPLAY
Deal found 5/15$522
Wed 8/217:00 pmBOS - CWL
1 stop9h 15mDelta
Wed 9/49:45 amCWL - BOS
1 stop33h 05mDelta
Deal found 5/15$795
Sun 8/255:30 amBOS - CWL
2 stops22h 45mDelta
Wed 9/49:45 amCWL - BOS
1 stop33h 05mDelta
Deal found 5/15$800
Wed 8/218:25 pmBOS - CWL
1 stop31h 50mDelta
Tue 9/39:45 amCWL - BOS
2 stops18h 49mDelta
Deal found 5/15$806
Sun 8/257:00 amBOS - CWL
2 stops21h 15mDelta
Tue 9/39:45 amCWL - BOS
2 stops20h 29mDelta
Deal found 5/15$810
Fri 8/237:00 pmBOS - CWL
1 stop9h 15mDelta
Wed 9/49:45 amCWL - BOS
1 stop13h 45mDelta
Deal found 5/15$845
Wed 8/216:00 amBOS - CWL
2 stops22h 15mDelta
Thu 9/59:45 amCWL - BOS
2 stops17h 59mDelta
Deal found 5/15$848
Thu 10/244:50 pmBOS - CWL
1 stop18h 55mKLM
Mon 10/286:00 amCWL - BOS
2 stops15h 47mKLM
Deal found 5/15$850
Thu 10/241:05 pmBOS - CWL
2 stops15h 10mVirgin Atlantic
Mon 10/286:00 amCWL - BOS
2 stops18h 51mVirgin Atlantic
Deal found 5/15$854

One-way flights to Cardiff from Boston

Search for one-way flight options from Boston to Cardiff. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users in need of a one-way flight from Boston to Cardiff can choose from these deals. Users can also find round-trip Boston to Cardiff flights by using the search form above.
Sun 6/163:15 pmBOS - CWL
3 stops39h 15mMultiple Airlines
Deal found 5/15$446
Tue 8/68:50 pmBOS - CWL
3 stops33h 40mMultiple Airlines
Deal found 5/15$566
Sun 6/164:40 pmBOS - CWL
1 stop11h 35mKLM
Deal found 5/15$599
Tue 8/67:00 pmBOS - CWL
1 stop16h 45mKLM
Deal found 5/15$602
Tue 8/611:00 amBOS - CWL
2 stops17h 15mDelta
Deal found 5/15$607
Sun 6/168:20 pmBOS - CWL
2 stops34h 10mBritish Airways
Deal found 5/15$620
Sat 6/1512:15 amBOS - CWL
3 stops31h 10mMultiple Airlines
Deal found 5/15$975

Find flights from Boston to Cardiff within your budget

Customize your flight search to find flights from Boston to Cardiff that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$522 - $1,312

Route

Depart

Return

Price

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 10/24

1 stop10h 25m

Cardiff Wales

Mon 10/28

1 stop11h 20m

$522

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 8/21

1 stop9h 15m

Cardiff Wales

Tue 9/3

1 stop11h 55m

$795

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 8/25

2 stops22h 45m

Cardiff Wales

Wed 9/4

1 stop33h 05m

$800

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 10/24

1 stop18h 55m

Cardiff Wales

Mon 10/28

2 stops15h 47m

$850

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 10/24

2 stops15h 10m

Cardiff Wales

Mon 10/28

2 stops18h 51m

$854

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 9/30

2 stops22h 55m

Cardiff Wales

Mon 10/7

2 stops29h 00m

$964

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 7/10

1 stop15h 20m

Cardiff Wales

Wed 7/24

1 stop11h 50m

$1,100

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 7/8

1 stop11h 25m

Cardiff Wales

Mon 7/15

1 stop30h 15m

$1,151

Boston Logan IntlCardiff Wales

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 7/25

2 stops18h 40m

Cardiff Wales

Tue 8/13

2 stops32h 55m

$1,312

Flights are sorted by cheapest first

Deals found on 5/15

When is the cheapest time to fly from Boston to Cardiff?

Use this chart to determine the cheapest time to fly round-trip from Boston to Cardiff. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to Cardiff flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Cardiff by month

Plan your trip from Boston to Cardiff by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to Cardiff is currently $631 while a round-trip flight costs $928. Price data was last updated on May 12, 2024.

Currently, January is the cheapest month in which you can book a flight from Boston to Cardiff (average of $708). Flying from Boston to Cardiff in June is currently the most expensive (average of $1,565). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$708

February

$727

March

$897

April

$784

May

$945

June

$1,565

July

$1,315

August

$998

September

$840

October

$851

November

$888

December

$816

Temperature and rainfall in Cardiff by month

Plan your trip to Cardiff by taking into account the average temperature and rainfall totals by month.

CWL

Temperature

39.2 - 64.4 °F

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated May 16, 2024.
Get a feel of what it's like to fly with Delta, KLM and Virgin Atlantic from Boston to Cardiff by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.7
Good
735 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air France
7.6
Good
1,764 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

PLAY
7.2
Good
67 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Food

7.4

Crew

8.6

Entertainment

8.0

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Boston to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Boston to Cardiff for under $600 on Cheapflights?

    Yes, there are multiple flights from Boston to Cardiff for under $600. The cheapest flight booked recently is on PLAY for just $522, but on average you can expect to pay $858.

  • What are the cheapest airlines flying from Boston to Cardiff round-trip?

    Our cheapest airline available from Boston to Cardiff is PLAY. Our recent data shows that you can find tickets from as low as $522 on this airline. Additional options worth looking into are Delta and KLM, starting at $795 and $850 round-trip. You may be able to fly from Boston to Cardiff for 48% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boston to Cardiff one-way?

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $599. Delta flights start at $607 while deals on British Airways start at $620 one-way.

  • What does BOS to CWL mean?

    This is defined as Boston Logan Intl Airport (BOS) and Cardiff Wales Airport (CWL). Codes like Cardiff Wales Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Boston to Cardiff that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to Cardiff flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to Cardiff with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to Cardiff flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Boston to Cardiff that include hotel bookings?

    Yes. In addition to deals on Boston to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Cardiff?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Cardiff.

  • Can I find deals for business class flights from Boston to Cardiff?

    Yes. Cheapflights offers flight deals from Boston to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Boston to Cardiff that allow pets onboard?

    Many airlines flying from Boston to Cardiff offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to Cardiff?

    Yes, you can often find last-minute deals on Boston to Cardiff flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Boston to Cardiff flight deals updated?

    The Boston to Cardiff flight deals you see on this page were last updated on 5/15.

See more FAQs

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Alternative routes for Boston to Cardiff
See prices for flight routes from nearby airports that may be better suited for you.

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Hartford to Manchester flights
Hartford to Cardiff flights
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Top 2 airlines flying from Boston to Cardiff

Discover the top 2 airlines that operate flights from Boston to Cardiff. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$675Average$1,071FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest$701Average$921FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
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Search flights from Boston to Cardiff by cabin class

Find flights from Boston to Cardiff, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Cardiff?

Deals for Boston to Cardiff flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Boston to Cardiff?

Cheapflights simply makes it quick and affordable to book flights from Boston to Cardiff by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Boston to Cardiff with no change fees?

Yes! Cheapflights helps users easily find flights from Boston to Cardiff with no change fees.

Can Cheapflights notify me if prices for flights from Boston to Cardiff become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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