The cheapest times to fly from SLC to CWL are

  • January 8th to May 27th (except the week of April 2nd)
  • October 15th to December 9th (except the week of November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SLC to CWL is mid May. Prices can be as high as $1685 for Saturday flights during early August, or as low as $840 for Wednesday flights around mid May.


When to Fly to Cardiff

Flying from Salt Lake City, UT (SLC) to Cardiff (CWL) will usually cost between $862 to $1408 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid May with an average ticket price of $888. Due to high demand the most expensive time to fly is early August, with an average price of $1483. Planning your trip to low-cost times can easily save you $595 on economy flights and even more on first-class flights. Generally, any price below $965 can be considered a good price for a round-trip SLC to CWL flight.

See below for a graph of average weekly prices for the SLC to CWL route. All prices are for round-trip tickets in USD.

SLC to CWL Flight Prices

Compared to other flights, the SLC to CWL flight is priced close to the average and costs about as much as the average flight leaving from Salt Lake City. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to CWL, and Tuesday the cheapest day to fly back into SLC. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $181 (16%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $952. Return trip prices are from the CWL to SLC flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SLC to CWL can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 33 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SLC to CWL while comparing.

Destination alternative #1: London Gatwick Airport (LGW) in London

  • 137 miles (220 km) away from CWL
  • Usually 11.50% less expensive than CWL
  • 1-layover flights available

See SLC to LGW flights

Destination alternative #2: London Heathrow Airport (LHR) in London

  • 124 miles (200 km) away from CWL
  • Usually 8.60% less expensive than CWL
  • Nonstop flights available

See SLC to LHR flights

Destination alternative #3: London City Airport (LCY) in London

  • 147 miles (237 km) away from CWL
  • Usually 4.09% less expensive than CWL
  • 1-layover flights available

See SLC to LCY flights

Destination alternative #4: Bristol Airport (BRS) in Bristol

  • 27 miles (43 km) away from CWL
  • Usually 1.87% less expensive than CWL
  • 1-layover flights available

See SLC to BRS flights


Flight Hacking SLC to CWL

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SLC to CWL — but Champion Traveler does!

Hack #1: Los Angeles, CA (SLC > LAX > CWL)

  • Price for both tickets: $795
  • Average savings: $170 (17.62%)

See SLC to LAX flights

Hack #2: San Jose, CA (SLC > SJC > CWL)

  • Price for both tickets: $835
  • Average savings: $130 (13.47%)

See SLC to SJC flights

Hack #3: Oakland, CA (SLC > OAK > CWL)

  • Price for both tickets: $849
  • Average savings: $116 (12.02%)

See SLC to OAK flights


Flight Questions Answered

Still have questions about flying from SLC to CWL? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Aer Lingus, Air France, Alitalia, Delta, Finnair, KLM, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Cardiff Airport to Salt Lake City International Airport?

The distance between the two airports is roughly 4761 miles or 7662 kilometers.

How long does it take to fly from SLC to CWL?

The real-world flight time for a nonstop SLC to CWL flight is about 9 hour 33 minutes.

How many flights go between Salt Lake City, UT and Cardiff?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from SLC to CWL.


Airport Location Info


Departing Airport

Origination code SLC
Origination airport name Salt Lake City International Airport
City Salt Lake City, UT
Country the United States
Latitude 40.8
Longitude -112

Return Airport

Destination code CWL
Destination airport name Cardiff Airport
City Cardiff
Country the United Kingdom
Latitude 51.4
Longitude -3.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.