$139 Cheap Delta flights Missoula (MSO) to San Diego (SAN)

Finding cheap one-way Delta Air Lines flights from MSO to SAN from $139 on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $270 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for return or one-way flights to San Diego in January or November. You could find cheaper fares with Delta Air Lines during these off-peak months.

For cheap Delta Air Lines fares from Missoula Intl. Airport (MSO) to San Diego Intl. Airport (SAN), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall price. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Simply enter your dates, press search and select the “Nonstop” filter on Expedia to find any direct flights from MSO to SAN with Delta Air Lines or other carriers.

To find the earliest departures from MSO to SAN with Delta Air Lines, filter your search by “Morning” and “Early Morning.” Booking an early flight generally means you’ll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Missoula Intl. Airport (MSO) to San Diego come in to land at San Diego Intl. Airport (SAN). This is the main gateway to this destination.

With an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a favorite for many passengers heading from MSO to SAN. Also, if you’re a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee typically applies if you cancel or reschedule your booking more than 24 hours after it has been confirmed. To secure tickets with more flexibility, select our “No cancel fee” or “Changes included” filter while looking for flights. For more details on canceling or changing your reservation, go to “Trips,” select your flight and click on “Manage Booking.”