$458+ Cheap flights from Cardiff (CWL) to Boston (BOS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Cardiff to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Cardiff to Boston
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Best
Last-minute
One-way
Cheapest flights from Cardiff to BostonExplore the most affordable flight options available from Cardiff to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
Explore the most affordable flight options available from Cardiff to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 pm -
1 stop19h 05m
Sun 11/85:15 pm -
1 stop9h 55m
Deal found 10/6![Multiple Airlines logo]()
$700
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:05 pm -
2 stops27h 50m
Fri 11/275:15 pm -
1 stop9h 35m
Deal found 10/5![Multiple Airlines logo]()
$814
This Mytrip deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:25 pm -
1 stop9h 40m
Sun 11/295:15 pm -
1 stop9h 55m
Deal found 10/8![Multiple Airlines logo]()
$825
This Virgin Atlantic deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:30 pm -
1 stop25h 50m
Mon 12/78:55 pm -
1 stop15h 05m
Deal found 10/7![Virgin Atlantic logo]()
$846
This TravelUp deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:20 am -
2 stops17h 38m
Mon 12/78:55 pm -
1 stop15h 05m
Deal found 10/7![Multiple Airlines logo]()
$848
This Expedia deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:30 pm -
1 stop30h 31m
Sun 11/299:30 pm -
2 stops31h 15m
Deal found 10/8![KLM logo]()
$857
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:20 am -
2 stops17h 45m
Sun 11/81:35 pm -
2 stops15h 15m
Deal found 10/6![Delta logo]()
$894
Best flights from Cardiff to BostonDiscover carefully curated flight deals from Cardiff to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Cardiff to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 pm -
1 stop19h 05m
Sun 11/85:15 pm -
1 stop9h 55m
Deal found 10/6![Multiple Airlines logo]()
$700
This Virgin Atlantic deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:30 pm -
1 stop25h 50m
Mon 12/78:55 pm -
1 stop15h 05m
Deal found 10/7![Virgin Atlantic logo]()
$846
This Expedia deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:30 pm -
1 stop30h 31m
Sun 11/299:30 pm -
2 stops31h 15m
Deal found 10/8![KLM logo]()
$857
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:20 am -
2 stops17h 45m
Sun 11/81:35 pm -
2 stops15h 15m
Deal found 10/6![Delta logo]()
$894
This TravelUp deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:20 am -
2 stops17h 38m
Mon 12/71:37 pm -
2 stops15h 08m
Deal found 10/7![Multiple Airlines logo]()
$857
This Expedia deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:30 pm -
2 stops30h 29m
Fri 11/276:00 am -
2 stops22h 50m
Deal found 10/5![KLM logo]()
$931
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1710:20 am -
1 stop32h 52m
Sun 4/188:15 pm -
1 stop15h 30m
Deal found 10/5![Delta logo]()
$1,022
This Mytrip deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:30 pm -
3 stops29h 20m
Sun 11/297:50 pm -
3 stops32h 55m
Deal found 10/8![Multiple Airlines logo]()
$1,009
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1710:20 am -
1 stop32h 52m
Fri 4/169:00 am -
2 stops19h 15m
Deal found 10/5![Delta logo]()
$1,022
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1810:20 am -
1 stop32h 52m
Sun 4/189:00 am -
2 stops19h 15m
Deal found 10/5![Delta logo]()
$1,022
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1910:20 am -
1 stop13h 41m
Thu 4/1510:00 am -
2 stops18h 15m
Deal found 10/5![Delta logo]()
$1,023
Last-minute flights from Cardiff to BostonDiscover last-minute flight deals from Cardiff to Boston. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Cardiff to Boston. Data last updated October 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 pm -
1 stop19h 05m
Sun 11/85:15 pm -
1 stop9h 55m
Deal found 10/6![Multiple Airlines logo]()
$700
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:20 am -
2 stops17h 45m
Sun 11/81:35 pm -
2 stops15h 15m
Deal found 10/6![Delta logo]()
$894
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:05 pm -
2 stops27h 50m
Fri 11/275:15 pm -
1 stop9h 35m
Deal found 10/5![Multiple Airlines logo]()
$814
This Expedia deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:30 pm -
2 stops30h 29m
Fri 11/276:00 am -
2 stops22h 50m
Deal found 10/5![KLM logo]()
$931
This Mytrip deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:25 pm -
1 stop9h 40m
Sun 11/295:15 pm -
1 stop9h 55m
Deal found 10/8![Multiple Airlines logo]()
$825
This Expedia deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:30 pm -
1 stop30h 31m
Sun 11/299:30 pm -
2 stops31h 15m
Deal found 10/8![KLM logo]()
$857
One-way flights from Cardiff to BostonSearch for one-way flight options from Cardiff to Boston. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Cardiff to Boston. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:05 pm -
3 stops50h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/79:05 am -
3 stops38h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$472
Find flight deals from Cardiff to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Boston (BOS). 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 October 9, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $700 (Mytrip) |
One-way from | $458 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Cardiff to Boston 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 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Cardiff to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Fri 11/20
4:05 pm-2:00 pm
3 stops50h 55m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$458
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Sun 3/7
9:05 am-6:25 pm
3 stops38h 20m
Boston Logan Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$472
Quickest round-trip
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Sun 11/1
11:50 pm-1:55 pm
1 stop19h 05m
Boston Logan Intl
Sun 11/8
5:15 pm-8:10 am
1 stop9h 55m
$700
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Thu 12/3
5:30 pm-2:20 pm
1 stop25h 50m
Boston Logan Intl
Mon 12/7
8:55 pm-5:00 pm
1 stop15h 05m
$846
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Sun 11/22
5:30 pm-7:01 pm
1 stop30h 31m
Boston Logan Intl
Sun 11/29
9:30 pm-9:45 am
2 stops31h 15m
$857
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Thu 12/3
10:20 am-10:58 pm
2 stops17h 38m
Boston Logan Intl
Mon 12/7
1:37 pm-9:45 am
2 stops15h 08m
$857
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Sun 11/1
10:20 am-11:05 pm
2 stops17h 45m
Boston Logan Intl
Sun 11/8
1:35 pm-9:50 am
2 stops15h 15m
$894
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Fri 11/20
5:30 pm-6:59 pm
2 stops30h 29m
Boston Logan Intl
Fri 11/27
6:00 am-9:50 am
2 stops22h 50m
$931
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Sun 11/22
5:30 pm-5:50 pm
3 stops29h 20m
Boston Logan Intl
Sun 11/29
7:50 pm-9:45 am
3 stops32h 55m
$1,009
CardiffBoston
CWL Cardiff Wales - BOS Boston Logan Intl
CWLBOS
Cardiff Wales
Wed 3/17
10:20 am-3:12 pm
1 stop32h 52m
Boston Logan Intl
Sun 4/18
8:15 pm-4:45 pm
1 stop15h 30m
$1,022
Showing 1-10 of 13 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Cardiff-Boston flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Cardiff-Boston flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Cardiff-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Cardiff-Boston flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cardiff-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Cardiff to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Cardiff with our price prediction graph.
CWL-BOS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Cardiff to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
Brockton
Dedham
Cranston
Warwick
Pawtucket
Peabody
Auburn
Londonderry
York Beach
Revere
Fitchburg
North Falmouth
Chelsea
Swansea
Braintree
Sandwich
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