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

Currently, January is the cheapest month in which you can book a flight from Cardiff to San Diego (average of £585). Flying from Cardiff to San Diego in July is currently the most expensive (average of £920). 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.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

What is the cheapest time of day to fly from CWL to SAN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Cardiff to San Diego as you normally would.

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

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

How can I find direct flights from Cardiff to San Diego?

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

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

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

£639+ Flights from Cardiff to San Diego

Cheap flight deals from Cardiff to San Diego

Round-trip from	£639

KLM
2/7-17/7
4 total stops
39h 16m total
Cardiff to San Diego

Search Deals

Find flight deals from Cardiff to San Diego

Cheapest flights from Cardiff to San Diego
Explore the most affordable flight options available from Cardiff to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Wed 2/709:50CWL - SAN

2 stops20h 32mKLM

Thu 17/714:01SAN - CWL

2 stops18h 44mKLM

Deal found 24/6£639

Wed 2/717:15CWL - SAN

1 stop26h 45mAir France

Thu 17/713:55SAN - CWL

1 stop18h 50mAir France

Deal found 24/6£1,075

Wed 2/717:15CWL - SAN

3 stops30h 10mMultiple Airlines

Thu 17/706:15SAN - CWL

3 stops21h 45mMultiple Airlines

Deal found 24/6£1,882

Best flights from Cardiff to San Diego
Discover carefully curated flight deals from Cardiff to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 June 2025.

Wed 2/709:50CWL - SAN

2 stops20h 32mKLM

Thu 17/714:01SAN - CWL

2 stops18h 44mKLM

Deal found 24/6£639

Wed 2/717:15CWL - SAN

1 stop26h 45mAir France

Thu 17/713:55SAN - CWL

1 stop18h 50mAir France

Deal found 24/6£1,075

Wed 2/717:15CWL - SAN

3 stops30h 10mMultiple Airlines

Thu 17/706:15SAN - CWL

3 stops21h 45mMultiple Airlines

Deal found 24/6£1,882

Last-minute flights from Cardiff to San Diego
Discover last-minute flight deals from Cardiff to San Diego. Data last updated 26 June 2025 and is based on user searches.

Wed 2/709:50CWL - SAN

2 stops20h 32mKLM

Thu 17/714:01SAN - CWL

2 stops18h 44mKLM

Deal found 24/6£639

Wed 2/717:15CWL - SAN

1 stop26h 45mAir France

Thu 17/713:55SAN - CWL

1 stop18h 50mAir France

Deal found 24/6£1,075

Wed 2/717:15CWL - SAN

3 stops30h 10mMultiple Airlines

Thu 17/706:15SAN - CWL

3 stops21h 45mMultiple Airlines

Deal found 24/6£1,882

Wed 2/709:50CWL - SAN

2 stops19h 03mKLM

Thu 17/713:55SAN - CWL

1 stop35h 20mKLM

Deal found 24/6£639

Best time to book a flight from Cardiff to San Diego

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

Estimated return 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.

Reviews of airlines servicing San Diego

Check out reviews from past customers who have flown with KLM and Air France from Cardiff to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,365 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,365 reviews

KLM

7.8

Good

1,365 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Air France

7.5

Good

1,470 reviews

KLM

7.8

Good

1,365 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Can I find deals for flights from Cardiff to San Diego that include hotel bookings?
Yes. In addition to deals on Cardiff to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Cardiff to San Diego?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to San Diego.
Can I find deals for business class flights from Cardiff to San Diego?
Yes. Cheapflights offers flight deals from Cardiff to San Diego 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 Diego?
Currently, January is the cheapest month in which you can book a flight from Cardiff to San Diego (average of £585). Flying from Cardiff to San Diego in July is currently the most expensive (average of £920). 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.

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How does Cheapflights help users find flights from Cardiff to San Diego?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Diego from Cardiff today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Cardiff to San Diego.

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

Yes, we can. To see specific flights from Cardiff to San Diego with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for Cardiff to San Diego flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Cardiff to San Diego from £639

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cardiff to San Diego

Round-trip from

Find flight deals from Cardiff to San Diego

Cheapest flights from Cardiff to San DiegoExplore the most affordable flight options available from Cardiff to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Explore the most affordable flight options available from Cardiff to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Best time to book a flight from Cardiff to San Diego

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

Reviews of airlines servicing San Diego

Check out reviews from past customers who have flown with KLM and Air France from Cardiff to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Cardiff to San Diego?

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

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

Travelling to a place near Cardiff?

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Alternative routes for Cardiff to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

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

How does Cheapflights help users find flights from Cardiff to San Diego?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Cardiff to San Diego
Explore the most affordable flight options available from Cardiff to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.