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$695+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
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 enero 30, 2025.

Round-trip from

$695
(TravelUp)

Popular in

August

Cheapest in

January

Average price

$638
From Cardiff Wales to San Francisco
Search Deals
Highest demand for flights based on searches. 35% potential increase in price ($606 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($82 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
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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 enero 30, 2025.

This TravelUp deal was found by Cheapflights users on 1/29. 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.
lun. 3/35:25 pmCWL - SFO
1 stop26h 25mKLM
lun. 3/172:50 pmSFO - CWL
1 stop19h 05mKLM
Deal found 1/29$695
This TravelUp deal was found by Cheapflights users on 1/30. 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. 3/810:25 amCWL - SFO
2 stops20h 54mVirgin Atlantic
mié. 3/127:25 amSFO - CWL
2 stops19h 25mVirgin Atlantic
Deal found 1/30$940
This Delta deal was found by Cheapflights users on 1/30. 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.
vie. 5/169:50 amCWL - SFO
2 stops21h 30mDelta
vie. 5/231:00 pmSFO - CWL
2 stops20h 05mDelta
Deal found 1/30$1,018
This Mytrip deal was found by Cheapflights users on 1/29. 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.
lun. 3/31:15 pmCWL - SFO
3 stops38h 52mMultiple Airlines
lun. 3/173:40 pmSFO - CWL
3 stops35h 10mMultiple Airlines
Deal found 1/29$1,242

Find flights from Cardiff to San Francisco within your budget

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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

lun. 3/3

5:25 pm-11:50 am

1 stop26h 25m

San Francisco

lun. 3/17

2:50 pm-4:55 pm

1 stop19h 05m

$695

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

sáb. 3/8

10:25 am-11:19 pm

2 stops20h 54m

San Francisco

mié. 3/12

7:25 am-9:50 am

2 stops19h 25m

$940

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

vie. 5/16

9:50 am-11:20 pm

2 stops21h 30m

San Francisco

vie. 5/23

1:00 pm-5:05 pm

2 stops20h 05m

$1,018

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

lun. 3/3

1:15 pm-8:07 pm

3 stops38h 52m

San Francisco

lun. 3/17

3:40 pm-9:50 am

3 stops35h 10m

$1,242

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

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.

Travel insights for flights from Cardiff to San Francisco

Get recent, data-driven insights about flights from Cardiff to San Francisco including ideal travel times, pricing trends, and more.

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 $405). 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 enero 30, 2025.
Delta
8.0
Very good
8,454 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

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
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

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
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

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
7.5
Good
657 reviews
Delta
8.0
Very good
8,454 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Overall

8.0

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?

    KLM, at $695, was found to be the cheapest airline from Cardiff to San Francisco.Alternate airlines to your destination round-trip include Virgin Atlantic and Delta. You may be able to fly from Cardiff to San Francisco for 37% less than the average price by searching for these airlines.

  • 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 $405). 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
Turlock
Santa Cruz
Fairfield
Manteca
Sausalito
Watsonville
Hayward
Richmond
Hollister
South San Francisco
Antioch
Milpitas
Elk Grove
Vallejo
Newark
Alameda
Campbell
Pacific Grove

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