Cheap Flights from Sion (SIR) to San Diego (SAN)

Popular airlines from Sion (SIR) to San Diego Intl. Airport (SAN)

Frequently asked questions

How much does a flight from Sion Airport (SIR) to San Diego Intl. Airport (SAN) cost?
Grab a cheap one-way flight or cheap return flight from Sion Airport (SIR) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Sion Airport (SIR) to San Diego Intl. Airport (SAN)?
The cheapest month to fly from SIR to SAN is , when demand is low. Off-peak season is generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Sion Airport (SIR) to San Diego Intl. Airport (SAN)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SIR to SAN flight.
How many flights per day from Sion Airport (SIR) to San Diego Intl. Airport (SAN)?
You'll need to hop on a flight with a layover when traveling from Sion Airport (SIR) to San Diego Intl. Airport (SAN). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from SIR to SAN?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sion Airport (SIR) to San Diego Intl. Airport (SAN)?
Choose a flight from Sion Airport (SIR) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sion Airport (SIR) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from SIR to SAN are usually more expensive. To lock in the lowest prices, start searching for flights ahead of time. That said, if your travel plans are flexible, you may score a cheap fare right before your trip.
Is it cheaper to book a SIR to SAN flight and hotel package?
You'll generally save money by securing a SIR to SAN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your ideal accommodations and flights, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Sion Airport (SIR) to San Diego Intl. Airport (SAN)?
In most instances, you're able to reschedule or cancel your SIR to SAN flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more details, visit our Customer Service portal.

Travel information

Origin airport
Sion
Destination airport
San Diego Intl.
Distance
5978 mi

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Sion to San Diego Flights

The cheapest times to fly from Sion to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sion to San Diego are during the month of . You can find some of the cheapest flights from Sion to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sion to San Diego

Sunday is one of the best days to book for cheap flights from Sion to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sion to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sion to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sion to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sion to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sion to San Diego Flights

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*Available to One Key members.