Title: Cheap Flights from Boulder (WBU) to San Diego (SAN) - Expedia.ca ![](https://images.trvl-media.com/place/3073/476a7863-1b66-47b5-9758-1dc7b3787493.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3073/476a7863-1b66-47b5-9758-1dc7b3787493.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Boulder (WBU) to San Diego (SAN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Boulder, CO (WBU-Boulder Municipal) to San Diego Intl. Airport (SAN) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:wbu,to:san,departure:04/10/2025TANYT&leg2=from:san,to:wbu,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Frequently asked questions ### How much is a flight from WBU to SAN? > Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from WBU to SAN start from . Make your booking today to score the best price for your journey. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from WBU to San Diego Intl. Airport (SAN)? > Every air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from WBU to San Diego Airport that have flexible change policies? > Plenty of airlines will allow you to reschedule your flight without a change fee. All you pay is the cost difference between the two flights. When searching for WBU to San Diego Airport flights, you'll find a "No change fees" filter for you to tick. ### How far is the flight from WBU to San Diego Intl. Airport (SAN)? > It's only 1,350 kilometres between WBU and SAN. Chances are you'll spend more time getting to and from the airport than actually flying! ### Which airlines fly direct from WBU to San Diego Airport? > Flying directly between WBU and San Diego Intl. Airport (SAN) isn't possible right now. However, you'll still be able to find a flight to San Diego with at least one stop. ### Are WBU to San Diego Intl. Airport (SAN) flight tickets cheaper when they're purchased at the last minute? > It is possible to nab a fantastic last-minute deal from WBU to SAN, but it can also be hit-or-miss. As many airlines publish prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals often, so you can feel confident knowing you're always getting the latest offers. ## Travel information | Origin airport | Boulder Municipal | | --- | --- | | Destination airport | San Diego Intl. | | Distance | 1334 km | ## Book with confidence ### Boulder to San Diego Flights **The easy way to book your flights from Boulder to San Diego**  With Expedia, it’s simple to find and book flights to San Diego from Boulder whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to San Diego Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Boulder to San Diego today, tomorrow, or this week.   **Save dollars with cheap flights from Boulder Municipal, WBU to San Diego Intl., SAN**  Sort your search results by price to find great deals on your flight from Boulder to San Diego—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to San Diego from Boulder currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to San Diego   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to San Diego from Boulder**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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