$117 Cheap Delta flights Great Falls (GTF) to San Diego (SAN)

Scoring cheap one-way Delta Air Lines flights from GTF to SAN from $117 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares from $234 for your next exciting getaway.**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.

January is one of the cheapest months to jet away to San Diego with Delta Air Lines. You could also find fantastic deals on one-way and round-trip tickets in November.

To find cheap Delta Air Lines fares from Great Falls Intl. Airport (GTF) to San Diego Intl. Airport (SAN), start searching one to three months before your intended departure. Reserving 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 influence how much you pay. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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, hit search and select “Nonstop” on Expedia to find any direct flights from GTF to SAN with Delta Air Lines or other carriers.

Search Delta Air Lines’s earliest flights from GTF to SAN by using the “Morning” and “Early Morning” filters. Not only will you get to your destination sooner, early departures also experience 20% 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.

Board a Delta Air Lines flight from Great Falls Intl. Airport (GTF) to San Diego, and you’ll most likely touch down at San Diego Intl. Airport (SAN). This is the airline’s main hub here.

Traveling from GTF to SAN with Delta Air Lines comes with a host of benefits, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can cancel or reschedule your flight, although there may be additional charges if you booked over 24 hours ago. Need to keep your options open? Use our “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you have to adjust your plans. To make changes, go to “Trips,” select your flight and click on “Manage Booking” for further information.