Find cheap Delta flights to Cardiff
RDU — CWL
Aug 26 — Sep 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Leverage Cheapflights for Your Next Trip
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.Find Delta flight deals to Cardiff
Cheapest
Best
Last-minute
One-way
Cheapest Delta flights from USA to CardiffExplore the most affordable Delta flight options available from USA to Cardiff. Find the lowest fares with prices last updated on July 27, 2026.
Explore the most affordable Delta flight options available from USA to Cardiff. Find the lowest fares with prices last updated on July 27, 2026.
This Delta deal was found by Cheapflights users on 7/25. 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 8/2310:00 am
PHL
- CWL
2 stops18h 15m
Delta
Tue 9/89:45 am
CWL
- PHL
2 stops17h 08m
Delta
Deal found 7/25![Delta logo]()
$1,089
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 8/174:45 pm
BOS
- CWL
1 stop19h 00m
Delta
Fri 8/289:45 am
CWL
- BOS
1 stop11h 52m
Delta
Deal found 7/26![Delta logo]()
$1,183
This Delta deal was found by Cheapflights users on 7/26. 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 8/191:34 pm
BOS
- CWL
2 stops22h 11m
Delta
Wed 8/269:45 am
CWL
- BOS
1 stop11h 52m
Delta
Deal found 7/26![Delta logo]()
$1,187
Best Delta flights from USA to CardiffDiscover carefully curated Delta flight deals from USA to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated Delta flight deals from USA to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This Delta deal was found by Cheapflights users on 7/26. 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 9/98:53 am
RDU
- CWL
2 stops19h 22m
Delta
Wed 9/169:45 am
CWL
- RDU
2 stops19h 10m
Delta
Deal found 7/26![Delta logo]()
$1,089
This Delta deal was found by Cheapflights users on 7/25. 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 8/2310:00 am
PHL
- CWL
2 stops18h 15m
Delta
Tue 9/89:45 am
CWL
- PHL
2 stops17h 08m
Delta
Deal found 7/25![Delta logo]()
$1,089
This Delta deal was found by Cheapflights users on 7/25. 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.
Tue 9/11:15 pm
PHL
- CWL
2 stops22h 30m
Delta
Wed 9/99:45 am
CWL
- PHL
2 stops17h 46m
Delta
Deal found 7/25![Delta logo]()
$1,099
Last-minute Delta flights from USA to CardiffDiscover last-minute Delta flight deals from USA to Cardiff. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute Delta flight deals from USA to Cardiff. Data last updated July 27, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/25. 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 8/2310:00 am
PHL
- CWL
2 stops18h 15m
Delta
Tue 9/89:45 am
CWL
- PHL
2 stops17h 08m
Delta
Deal found 7/25![Delta logo]()
$1,089
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 8/174:45 pm
BOS
- CWL
1 stop19h 00m
Delta
Fri 8/289:45 am
CWL
- BOS
1 stop11h 52m
Delta
Deal found 7/26![Delta logo]()
$1,183
This Delta deal was found by Cheapflights users on 7/26. 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 8/191:34 pm
BOS
- CWL
2 stops22h 11m
Delta
Wed 8/269:45 am
CWL
- BOS
1 stop11h 52m
Delta
Deal found 7/26![Delta logo]()
$1,187
One-way Delta flights to CardiffSearch for one-way Delta flight options to Cardiff. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way Delta flight options to Cardiff. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Delta deal was found by Cheapflights users on 7/24. 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 8/306:00 am
IAD
- CWL
2 stops22h 15m
Delta
Deal found 7/24![Delta logo]()
$533
This Delta deal was found by Cheapflights users on 7/24. 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.
Sat 8/295:47 pm
IAD
- CWL
2 stops34h 28m
Delta
Deal found 7/24![Delta logo]()
$538
This Delta deal was found by Cheapflights users on 7/25. 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 9/312:29 pm
IAD
- CWL
2 stops39h 46m
Delta
Deal found 7/25![Delta logo]()
$582
Flights to Cardiff with Delta at a glance
Find detailed information about Delta flights from USA to Cardiff. Explore the options provided by Delta to plan your journey from USA to Cardiff. Data last updated July 27, 2026.
Cheapflights Insights
Find cheap Delta flights to Cardiff
US0-CWL
PHL-CWL
BOS-CWL
RDU-CWL
IAD-CWL
How long is the flight to Cardiff with Delta?
On average, Delta flights from the United States to Cardiff take 11 hours 31 minutes. Flights to Cardiff from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
FAQs about flights to Cardiff with Delta
Reviews of Delta
See what Cheapflights users have to say about their Delta experience.
Overview
Reviews
Delta
8,485 reviews
Overview
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Recent reviews
10.0
|Jul 2026Great
8.0
|Jun 2026All good with the airline
8.0
|Jun 2026Food snacks u can do better
6.0
|Jun 2026Pay for seat upgrade
8.0
|Jun 2026Pay for seat upgrades
1 out of 2829
Popular Delta flights
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Airports nearby
Complete your trip
Delta
Flights by cabin class
Flights from CWL
Flights to CWL
Popular destinations
Popular flights
Popular routes
Popular United Kingdom flight routes
United Kingdom flights