$122 Cheap Flights from Idaho Falls (IDA) to San Diego (SAN)

View $122 flight on Mon, May 19, 2025Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN)

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Find available prices by choosing your travel dates.

Cheap Flights from Idaho Falls to San Diego (IDA-SAN)

Prices were available within the past 7 days and start at $122 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, May 17 - Sat, May 24
IDA
Idaho Falls
SAN
San Diego
$244 Roundtrip, found 1 day ago
$244
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, May 17 from Idaho Falls to San Diego, returning Sat, May 24, priced at $244 found 1 day ago
Delta
Thu, May 22 - Sat, May 24
IDA
Idaho Falls
SAN
San Diego
$245 Roundtrip, found 1 day ago
$245
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, May 22 from Idaho Falls to San Diego, returning Sat, May 24, priced at $245 found 1 day ago
Alaska Airlines
Sat, May 31 - Thu, Jun 5
IDA
Idaho Falls
SAN
San Diego
$248 Roundtrip, found 1 day ago
$248
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, May 31 from Idaho Falls to San Diego, returning Thu, Jun 5, priced at $248 found 1 day ago
Bargain Flight
Wed, May 21 - Sun, May 25
IDA
Idaho Falls
SAN
San Diego
$252 Roundtrip, found 6 days ago
$252
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Wed, May 21 from Idaho Falls to San Diego, returning Sun, May 25, priced at $252 found 6 days ago
Alaska Airlines
Sun, May 25 - Sat, May 31
IDA
Idaho Falls
SAN
San Diego
$254 Roundtrip, found 10 hours ago
$254
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Sun, May 25 from Idaho Falls to San Diego, returning Sat, May 31, priced at $254 found 10 hours ago
American Airlines
Wed, May 28 - Sat, May 31
IDA
Idaho Falls
CLD
Carlsbad
$255 Roundtrip, found 5 days ago
$255
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, May 28 from Idaho Falls to Carlsbad, returning Sat, May 31, priced at $255 found 5 days ago
Delta
Sun, May 25 - Sat, May 31
IDA
Idaho Falls
SAN
San Diego
$258 Roundtrip, found 10 hours ago
$258
Roundtrip
found 10 hours ago
Select Delta flight, departing Sun, May 25 from Idaho Falls to San Diego, returning Sat, May 31, priced at $258 found 10 hours ago
United
Sat, May 31 - Thu, Jun 5
IDA
Idaho Falls
SAN
San Diego
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select United flight, departing Sat, May 31 from Idaho Falls to San Diego, returning Thu, Jun 5, priced at $259 found 1 day ago
Hawaiian Airlines
Thu, Jun 5 - Tue, Jun 10
IDA
Idaho Falls
SAN
San Diego
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Jun 5 from Idaho Falls to San Diego, returning Tue, Jun 10, priced at $263 found 2 days ago
Alaska Airlines
Sun, May 25 - Fri, May 30
IDA
Idaho Falls
SAN
San Diego
$264 Roundtrip, found 1 day ago
$264
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sun, May 25 from Idaho Falls to San Diego, returning Fri, May 30, priced at $264 found 1 day ago
Flights from Idaho Falls (IDA) to San Diego (SAN)
Origin airport
Idaho Falls Regional
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$244
Distance
795 mi

Idaho Falls to San Diego Flights

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

 

The best time to book a flight from Idaho Falls to San Diego

Sunday is one of the best days to book for cheap flights from Idaho Falls 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 Idaho Falls 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 Idaho Falls to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $122 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 Idaho Falls 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 Idaho Falls 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.

 

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN) cost?
Discover the latest flight deals from IDA to SAN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IDA to SAN?
The cheapest flights from IDA to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IDA to SAN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IDA to SAN. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN)?
You’ll need to catch a flight with a layover when traveling from Idaho Falls Regional Airport (IDA) 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 IDA to SAN?
Typically you’ll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can change depending on the airline, season 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 Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN)?
Opt for a flight from Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures 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 Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from IDA to SAN are typically more expensive. To secure the best prices, start looking for flights as early as possible. That said, if you’re flexible with your travel plans, you may find a cheap fare just before your departure.
Is it cheaper to book an IDA to SAN flight and hotel package?
Compared with arranging hotels and flights separately, booking an IDA to SAN flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to San Diego Intl. Airport (SAN)?
You can usually reschedule or cancel your IDA to SAN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.