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$1,128+ Cheap flights from Cardiff (CWL) to San Francisco (SFO)

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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Cardiff to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to San Francisco (SFO). 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 junio 12, 2025.

Round-trip from

$1,128
(TravelUp)
From Cardiff Wales to San Francisco
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Find flight deals from Cardiff to San Francisco

Cheapest flights from Cardiff to San Francisco
Explore the most affordable flight options available from Cardiff to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This TravelUp deal was found by Cheapflights users on 6/11. 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.
sáb. 7/269:45 amCWL - SFO
2 stops22h 34mVirgin Atlantic
sáb. 8/27:00 pmSFO - CWL
2 stops54h 15mVirgin Atlantic
Deal found 6/11$1,128
This Delta deal was found by Cheapflights users on 6/11. 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.
sáb. 7/269:45 amCWL - SFO
2 stops22h 02mDelta
sáb. 8/21:45 pmSFO - CWL
1 stop19h 05mDelta
Deal found 6/11$1,161
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/275:20 pmCWL - SFO
1 stop26h 25mKLM
dom. 8/31:45 pmSFO - CWL
1 stop19h 00mKLM
Deal found 6/12$1,168
This TravelUp deal was found by Cheapflights users on 6/12. 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.
dom. 7/275:20 pmCWL - SFO
2 stops27h 30mAir France
dom. 8/33:05 pmSFO - CWL
2 stops17h 40mAir France
Deal found 6/12$1,197
This Mytrip deal was found by Cheapflights users on 6/12. 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.
dom. 7/2711:00 amCWL - SFO
3 stops42h 25mMultiple Airlines
dom. 8/37:30 amSFO - CWL
3 stops21h 15mMultiple Airlines
Deal found 6/12$1,335

Cheapflights Fare Finder

Customize your flight search to find flights from Cardiff to San Francisco 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 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Cardiff to San Francisco that are best for you.

Fly from

Cardiff

Fly to

San Francisco

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

sáb. 7/26

9:45 am-12:19 am

2 stops22h 34m

San Francisco

sáb. 8/2

7:00 pm-9:15 am

2 stops54h 15m

$1,128

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

sáb. 7/26

9:45 am-11:47 pm

2 stops22h 02m

San Francisco

sáb. 8/2

1:45 pm-4:50 pm

1 stop19h 05m

$1,161

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

dom. 7/27

5:20 pm-11:45 am

1 stop26h 25m

San Francisco

dom. 8/3

6:15 am-9:15 am

2 stops19h 00m

$1,168

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

dom. 7/27

5:20 pm-12:50 pm

2 stops27h 30m

San Francisco

dom. 8/3

3:05 pm-4:45 pm

2 stops17h 40m

$1,197

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

dom. 7/27

11:00 am-9:25 pm

3 stops42h 25m

San Francisco

dom. 8/3

7:30 am-12:45 pm

3 stops21h 15m

$1,335

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Cardiff to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Cardiff with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to San Francisco

What is the cheapest month to book a flight from Cardiff to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of $276). Flying from Cardiff to San Francisco in June is currently the most expensive (average of $364). 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.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated junio 12, 2025.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

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

    Virgin Atlantic, at $1,128, was found to be the cheapest airline from Cardiff to San Francisco.Alternate airlines to your destination round-trip include Delta and KLM.

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

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

  • How can I find direct flights from Cardiff to San Francisco?

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

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

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

  • What is the cheapest month to book a flight from Cardiff to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of $276). Flying from Cardiff to San Francisco in June is currently the most expensive (average of $364). 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.

See more FAQs

Traveling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Turlock
Santa Cruz
Manteca
Fairfield
Watsonville
Antioch
Hollister
Milpitas
Newark
Hayward
Alameda
Sunnyvale
Daly City
Union City
Campbell
Capitola

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