Cheap Flights from Boulder (WBU) to San Diego (SAN)

Popular airlines from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)

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Frequently asked questions

How much does a flight from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN) cost?
Snag a cheap one-way flight or cheap return flight from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
The cheapest month to fly from WBU to SAN is , when there's less demand. Off-peak season is typically when airlines offer lower prices between these airports.
Which airlines fly direct from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
You can't catch a nonstop flight to San Diego Intl. Airport (SAN) from Boulder, CO (WBU-Boulder Municipal). However, you can easily travel to San Diego without any layovers by taking off from Denver Intl. Airport (DEN).
What is the cheapest airline that flies from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from WBU to SAN. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
You'll have to hop on a flight with a layover when traveling from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from WBU to SAN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
To avoid possible delays on the Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN) route, travel before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN) last-minute?
Holding off until right before your break to book a ticket from WBU to SAN often results in higher prices. Although you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of scoring a bargain.
Is it cheaper to book a WBU to SAN flight and hotel package?
You'll typically save money by securing a WBU to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've selected your ideal flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN)?
Typically, it's possible to reschedule or cancel your WBU to SAN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Boulder Municipal
Destination airport
San Diego Intl.
Distance
834 mi

Book with confidence

Book with confidence

Boulder to San Diego Flights

The cheapest times to fly from Boulder 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 Boulder to San Diego are during the month of . You can find some of the cheapest flights from Boulder to San Diego with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Boulder 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 Boulder 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 Boulder 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 Boulder 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 Boulder 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.

 

Boulder to San Diego Flights

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