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Cheap flights from Idaho Falls to San Antonio from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to San Antonio departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho Falls to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:15 pm - 9:28 pmIDA-SAT
7h 13m1 stop
Delta Logo
6:20 pm - 10:57 pmSAT-IDA
5h 37m1 stop
$363Delta
Find Deal
Sat, Jan 17 - Wed, Jan 21
Multiple Airlines Logo
9:20 pm - 5:35 amIDA-SAT
7h 15m1 stop
Multiple Airlines Logo
5:10 am - 4:12 pmSAT-IDA
12h 02m1 stop
$372Multiple Airlines
Find Deal
Fri, Dec 19 - Mon, Jan 5
Multiple Airlines Logo
9:20 pm - 5:35 amIDA-SAT
7h 15m1 stop
Multiple Airlines Logo
5:10 am - 4:12 pmSAT-IDA
12h 02m1 stop
$381Multiple Airlines
Find Deal
Fri, Dec 19 - Mon, Jan 5
Alaska Airlines Logo
6:58 pm - 5:45 pmIDA-SAT
21h 47m1 stop
Alaska Airlines Logo
6:46 pm - 6:18 pmSAT-IDA
24h 32m1 stop
$392Alaska Airlines
Find Deal
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
7:00 am - 1:06 pmIDA-SAT
5h 06m1 stop
United Airlines Logo
4:55 pm - 9:14 pmSAT-IDA
5h 19m1 stop
$401United Airlines
Find Deal
Wed, Dec 10 - Thu, Dec 18
Multiple Airlines Logo
9:20 pm - 5:35 amIDA-SAT
7h 15m1 stop
Multiple Airlines Logo
6:45 am - 4:12 pmSAT-IDA
10h 27m2 stops
$406Multiple Airlines
Find Deal
Fri, Dec 19 - Mon, Jan 5
Delta Logo
6:10 am - 1:31 pmIDA-SAT
6h 21m1 stop
Delta Logo
6:05 pm - 10:14 pmSAT-IDA
5h 09m1 stop
$413Delta
Find Deal
Sat, Apr 18 - Sat, Apr 25
Delta Logo
6:10 am - 9:28 pmIDA-SAT
14h 18m2 stops
Delta Logo
6:05 pm - 10:14 pmSAT-IDA
5h 09m1 stop
$418Delta
Find Deal
Sat, Apr 18 - Sat, Apr 25
Multiple Airlines Logo
9:20 pm - 5:35 amIDA-SAT
7h 15m1 stop
Multiple Airlines Logo
6:45 am - 4:12 pmSAT-IDA
10h 27m2 stops
$421Multiple Airlines
Find Deal
Fri, Dec 19 - Mon, Jan 5
United Airlines Logo
2:45 pm - 10:59 pmIDA-SAT
7h 14m2 stops
United Airlines Logo
4:55 pm - 9:14 pmSAT-IDA
5h 19m1 stop
$428United Airlines
Find Deal
Wed, Dec 10 - Thu, Dec 18

Delta flights from Idaho Falls to San Antonio

Our best Delta deals on Idaho Falls to San Antonio flight tickets
Delta
Jan 17
IDA1:15 pmIdaho Falls Fanning Field
7h 13m
1 stop
SAT9:28 pmSan Antonio
Jan 21
SAT6:20 pmSan Antonio
5h 37m
1 stop
IDA10:57 pmIdaho Falls Fanning Field
$363
Find similar
Delta
Apr 18
IDA6:10 amIdaho Falls Fanning Field
6h 21m
1 stop
SAT1:31 pmSan Antonio
Apr 25
SAT6:05 pmSan Antonio
5h 09m
1 stop
IDA10:14 pmIdaho Falls Fanning Field
$413
Find similar
Delta
Apr 18
IDA6:10 amIdaho Falls Fanning Field
14h 18m
2 stops
SAT9:28 pmSan Antonio
Apr 25
SAT6:05 pmSan Antonio
5h 09m
1 stop
IDA10:14 pmIdaho Falls Fanning Field
$418
Find similar

Alaska Airlines flights from Idaho Falls to San Antonio

Our best Alaska Airlines deals on Idaho Falls to San Antonio flight tickets
Alaska Airlines
Jan 17
IDA6:58 pmIdaho Falls Fanning Field
21h 47m
1 stop
SAT5:45 pmSan Antonio
Jan 21
SAT6:46 pmSan Antonio
24h 32m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
$392
Find similar
Alaska Airlines
Feb 5
IDA6:58 pmIdaho Falls Fanning Field
21h 47m
1 stop
SAT5:45 pmSan Antonio
Feb 11
SAT6:46 pmSan Antonio
29h 50m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
$433
Find similar
Alaska Airlines
Feb 12
IDA5:20 pmIdaho Falls Fanning Field
22h 50m
1 stop
SAT5:10 pmSan Antonio
Feb 16
SAT6:06 pmSan Antonio
23h 37m
1 stop
IDA4:43 pmIdaho Falls Fanning Field
$470
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to San Antonio 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 November 26, 2025.
Use the filters below to find and compare flights from Idaho Falls to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 1/17

1:15 pm-9:28 pm

1 stop7h 13m

San Antonio

Wed 1/21

6:20 pm-10:57 pm

1 stop5h 37m

$363

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 12/19

9:20 pm-5:35 am

1 stop7h 15m

San Antonio

Mon 1/5

5:10 am-4:12 pm

1 stop12h 02m

$372

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 12/19

9:20 pm-5:35 am

1 stop7h 15m

San Antonio

Mon 1/5

5:10 am-4:12 pm

1 stop12h 02m

$381

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 1/17

6:58 pm-5:45 pm

1 stop21h 47m

San Antonio

Wed 1/21

6:46 pm-6:18 pm

1 stop24h 32m

$392

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 12/10

7:00 am-1:06 pm

1 stop5h 06m

San Antonio

Thu 12/18

4:55 pm-9:14 pm

1 stop5h 19m

$401

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 12/19

9:20 pm-5:35 am

1 stop7h 15m

San Antonio

Mon 1/5

6:45 am-4:12 pm

2 stops10h 27m

$406

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 4/18

6:10 am-1:31 pm

1 stop6h 21m

San Antonio

Sat 4/25

6:05 pm-10:14 pm

1 stop5h 09m

$413

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 4/18

6:10 am-9:28 pm

2 stops14h 18m

San Antonio

Sat 4/25

6:05 pm-10:14 pm

1 stop5h 09m

$418

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 12/19

9:20 pm-5:35 am

1 stop7h 15m

San Antonio

Mon 1/5

6:45 am-4:12 pm

2 stops10h 27m

$421

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 12/10

2:45 pm-10:59 pm

2 stops7h 14m

San Antonio

Thu 12/18

4:55 pm-9:14 pm

1 stop5h 19m

$428

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

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

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 San Antonio?

If you aren’t able to travel during the month of April, then book flights to San Antonio from Idaho Falls during November instead. Flights to San Antonio in November, while not as cheap as those in April, still average around $395.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $379. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $875.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Idaho Falls to San Antonio in the afternoon for as low as $403. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $559. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Idaho Falls to San Antonio

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

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

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

Fastest flight time

4h 40m

Direct flights

None
The fastest flight from Idaho Falls to San Antonio takes 4h 40m
There are no direct flights from Idaho Falls to San Antonio. There are no popular flight routes from Idaho Falls to San Antonio.
Search flight deals

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

    A flight from Idaho Falls Fanning Field to San Antonio will travel around 1223.6 mi. By plane, this route typically takes 5h 02m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The necessary travel and health documents for your San Antonio 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 Idaho Falls to San Antonio?

Best airlines flying from Idaho Falls to San Antonio

Compare and see reviews for airlines that fly from Idaho Falls to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $230Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $286Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $387Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Boerne
Kerrville
Schertz
Pleasanton

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho Falls to San Antonio. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Idaho Falls to San Antonio flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho Falls to San Antonio.

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

If you are simply researching potential flights to San Antonio, momondo offers a useful price alert feature which will track prices for flights to San Antonio from Idaho Falls and alert you when they change.

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