Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to Idaho Falls from $186

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Idaho Falls departing on 3/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Antonio to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:59 pm - 10:21 pm
SAT
-
IDA
5h 22m1 stop
Delta Logo
5:25 am - 1:43 pm
IDA
-
SAT
7h 18m1 stop
$371Delta
Thu, Feb 19 - Tue, Feb 24
Delta Logo
5:59 pm - 10:21 pm
SAT
-
IDA
5h 22m1 stop
Delta Logo
5:25 am - 2:44 pm
IDA
-
SAT
8h 19m2 stops
$376Delta
Thu, Feb 19 - Tue, Feb 24
Delta Logo
7:00 am - 5:49 pm
SAT
-
IDA
11h 49m2 stops
Delta Logo
1:10 pm - 11:43 pm
IDA
-
SAT
9h 33m2 stops
$381Delta
Thu, Feb 19 - Tue, Feb 24
Alaska Airlines Logo
6:46 pm - 10:59 pm
SAT
-
IDA
29h 13m1 stop
Alaska Airlines Logo
6:58 pm - 5:45 pm
IDA
-
SAT
21h 47m1 stop
$442Alaska Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
8:30 am - 1:30 pm
SAT
-
IDA
6h 00m1 stop
United Airlines Logo
6:30 am - 1:09 pm
IDA
-
SAT
5h 39m1 stop
$472United Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
8:30 am - 3:31 pm
SAT
-
IDA
8h 01m1 stop
United Airlines Logo
10:51 am - 9:21 pm
IDA
-
SAT
9h 30m2 stops
$477United Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
7:40 am - 3:31 pm
SAT
-
IDA
8h 51m2 stops
United Airlines Logo
2:40 pm - 10:57 pm
IDA
-
SAT
7h 17m2 stops
$482United Airlines
Tue, Jan 13 - Sat, Jan 17

Delta flights from San Antonio to Idaho Falls

Our best Delta deals on San Antonio to Idaho Falls flight tickets
Delta
Feb 19
SAT5:59 pmSan Antonio
5h 22m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Feb 24
IDA5:25 amIdaho Falls Fanning Field
7h 18m
1 stop
SAT1:43 pmSan Antonio
$371
Find similar
Delta
Feb 19
SAT5:59 pmSan Antonio
5h 22m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Feb 24
IDA5:25 amIdaho Falls Fanning Field
8h 19m
2 stops
SAT2:44 pmSan Antonio
$376
Find similar
Delta
Feb 19
SAT7:00 amSan Antonio
11h 49m
2 stops
IDA5:49 pmIdaho Falls Fanning Field
Feb 24
IDA5:25 amIdaho Falls Fanning Field
8h 19m
2 stops
SAT2:44 pmSan Antonio
$381
Find similar

United Airlines flights from San Antonio to Idaho Falls

Our best United Airlines deals on San Antonio to Idaho Falls flight tickets
United Airlines
Jan 13
SAT8:30 amSan Antonio
6h 00m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Jan 17
IDA6:30 amIdaho Falls Fanning Field
5h 39m
1 stop
SAT1:09 pmSan Antonio
$472
Find similar
United Airlines
Jan 13
SAT8:30 amSan Antonio
8h 01m
1 stop
IDA3:31 pmIdaho Falls Fanning Field
Jan 17
IDA10:51 amIdaho Falls Fanning Field
9h 30m
2 stops
SAT9:21 pmSan Antonio
$477
Find similar
United Airlines
Jan 13
SAT7:40 amSan Antonio
8h 51m
2 stops
IDA3:31 pmIdaho Falls Fanning Field
Jan 17
IDA10:51 amIdaho Falls Fanning Field
11h 06m
2 stops
SAT10:57 pmSan Antonio
$482
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from San Antonio to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Thu 2/19

5:59 pm-10:21 pm

1 stop5h 22m

Idaho Falls Fanning Field

Tue 2/24

5:25 am-1:43 pm

1 stop7h 18m

$371

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Thu 2/19

5:59 pm-10:21 pm

1 stop5h 22m

Idaho Falls Fanning Field

Tue 2/24

5:25 am-2:44 pm

2 stops8h 19m

$376

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Thu 2/19

7:00 am-5:49 pm

2 stops11h 49m

Idaho Falls Fanning Field

Tue 2/24

1:10 pm-11:43 pm

2 stops9h 33m

$381

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 1/13

6:46 pm-10:59 pm

1 stop29h 13m

Idaho Falls Fanning Field

Sat 1/17

6:58 pm-5:45 pm

1 stop21h 47m

$442

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 1/13

8:30 am-1:30 pm

1 stop6h 00m

Idaho Falls Fanning Field

Sat 1/17

6:30 am-1:09 pm

1 stop5h 39m

$472

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 1/13

8:30 am-3:31 pm

1 stop8h 01m

Idaho Falls Fanning Field

Sat 1/17

10:51 am-9:21 pm

2 stops9h 30m

$477

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 1/13

7:40 am-3:31 pm

2 stops8h 51m

Idaho Falls Fanning Field

Sat 1/17

2:40 pm-10:57 pm

2 stops7h 17m

$482

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Mon 3/23

5:55 pm-10:20 pm

1 stop5h 25m

$186

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Mon 3/30

8:45 am-1:24 pm

1 stop5h 39m

$236

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Mon 3/23

5:00 am-1:30 pm

2 stops9h 30m

$262

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

See travel insights to Idaho Falls from

How to get the cheapest flight ticket from San Antonio to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $394.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $387. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $647.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the morning. Flights from San Antonio to Idaho Falls during this time can be as low as $478. Try not to purchase tickets at noon because they tend to be around $541. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from San Antonio to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Idaho Falls (SAT to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Idaho Falls

Fastest flight time

5h 22m

Direct flights

None
The fastest flight from San Antonio to Idaho Falls takes 5h 22m
There are no direct flights from San Antonio to Idaho Falls. There are no popular flight routes from San Antonio to Idaho Falls.
Search flight deals

  • How far is San Antonio to Idaho Falls Fanning Field by plane?

    Idaho Falls Fanning Field is 1223.6 mi away from San Antonio. A reasonable flight in good conditions will take 5h 22m.

  • When did momondo last update prices for flights from San Antonio Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from San Antonio Airport to Idaho Falls Fanning Field Airport refresh daily.

  • How many operators does momondo search for flights from San Antonio Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from San Antonio Airport to Idaho Falls Fanning Field Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Antonio to Idaho Falls?

Best airlines flying from San Antonio to Idaho Falls

Compare and see reviews for airlines that fly from San Antonio to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $370Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
DeltaPriceFrom $371Free CancellationRating
7.9
8,014 reviews
Search Delta flights

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Idaho Falls?

It is quick and easy to find San Antonio to Idaho Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho Falls that suits you.

Can I find flights from San Antonio to Idaho Falls with flexible booking policies on momondo?

All flight searches from San Antonio to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Antonio to Idaho Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from San Antonio.

I’m not ready to book a flight from San Antonio to Idaho Falls right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Antonio to Idaho Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho Falls and let you know when they change.

An easier way to manage your Idaho Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/22
Thu 1/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States