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Cheap flights from San Antonio to Idaho Falls from $371

This is the cheapest round-trip 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 10/29. 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

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Find the cheapest flights from San Antonio to Idaho Falls

Cheap round-trip flights

Alaska Airlines Logo
6:32 am - 3:13 pmSAT-IDA
9h 41m1 stop
Alaska Airlines Logo
3:50 pm - 5:55 pmIDA-SAT
25h 05m1 stop
$371Alaska Airlines
Find Deal
Wed, Oct 29 - Tue, Nov 4
United Airlines Logo
9:00 am - 1:33 pmSAT-IDA
5h 33m1 stop
United Airlines Logo
5:00 am - 12:45 pmIDA-SAT
6h 45m1 stop
$401United Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 7
United Airlines Logo
5:30 am - 1:33 pmSAT-IDA
9h 03m2 stops
United Airlines Logo
5:00 am - 12:45 pmIDA-SAT
6h 45m1 stop
$406United Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 7
United Airlines Logo
4:39 pm - 8:52 pmSAT-IDA
5h 13m1 stop
United Airlines Logo
2:35 pm - 8:55 pmIDA-SAT
5h 20m1 stop
$440United Airlines
Find Deal
Tue, Sep 30 - Thu, Oct 9
United Airlines Logo
9:47 am - 5:18 pmSAT-IDA
8h 31m2 stops
United Airlines Logo
2:35 pm - 8:55 pmIDA-SAT
5h 20m1 stop
$445United Airlines
Find Deal
Tue, Sep 30 - Thu, Oct 9
American Airlines Logo
6:05 am - 12:24 pmSAT-IDA
7h 19m1 stop
American Airlines Logo
7:10 am - 10:51 pmIDA-SAT
14h 41m2 stops
$454American Airlines
Find Deal
Wed, Oct 29 - Tue, Nov 4
Delta Logo
6:05 pm - 10:25 pmSAT-IDA
5h 20m1 stop
Delta Logo
6:53 pm - 12:31 amIDA-SAT
4h 38m1 stop
$456Delta
Find Deal
Fri, Oct 3 - Tue, Oct 7
United Airlines Logo
8:30 am - 3:16 pmSAT-IDA
7h 46m1 stop
United Airlines Logo
10:58 am - 4:54 pmIDA-SAT
4h 56m1 stop
$460United Airlines
Find Deal
Tue, Nov 25 - Wed, Dec 3
Alaska Airlines Logo
5:00 am - 11:59 pmSAT-IDA
19h 59m2 stops
Alaska Airlines Logo
3:50 pm - 2:39 pmIDA-SAT
21h 49m2 stops
$481Alaska Airlines
Find Deal
Wed, Oct 29 - Tue, Nov 4
Delta Logo
6:05 pm - 10:24 pmSAT-IDA
5h 19m1 stop
Delta Logo
6:57 pm - 12:45 amIDA-SAT
4h 48m1 stop
$710Delta
Find Deal
Thu, Dec 18 - Sat, Dec 27

Alaska Airlines flights from San Antonio to Idaho Falls

Our best Alaska Airlines deals on San Antonio to Idaho Falls flight tickets
Alaska Airlines
Oct 29
SAT6:32 amSan Antonio
9h 41m
1 stop
IDA3:13 pmIdaho Falls Fanning Field
Nov 4
IDA3:50 pmIdaho Falls Fanning Field
25h 05m
1 stop
SAT5:55 pmSan Antonio
$371
Find similar
Alaska Airlines
Oct 29
SAT5:00 amSan Antonio
19h 59m
2 stops
IDA11:59 pmIdaho Falls Fanning Field
Nov 4
IDA3:50 pmIdaho Falls Fanning Field
21h 49m
2 stops
SAT2:39 pmSan Antonio
$481
Find similar
Alaska Airlines
Dec 18
SAT6:25 amSan Antonio
18h 42m
1 stop
IDA12:07 amIdaho Falls Fanning Field
Dec 27
IDA6:00 amIdaho Falls Fanning Field
22h 05m
1 stop
SAT5:05 amSan Antonio
$503
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
Sep 30
SAT9:00 amSan Antonio
5h 33m
1 stop
IDA1:33 pmIdaho Falls Fanning Field
Oct 7
IDA5:00 amIdaho Falls Fanning Field
6h 45m
1 stop
SAT12:45 pmSan Antonio
$401
Find similar
United Airlines
Sep 30
SAT5:30 amSan Antonio
9h 03m
2 stops
IDA1:33 pmIdaho Falls Fanning Field
Oct 7
IDA5:00 amIdaho Falls Fanning Field
6h 45m
1 stop
SAT12:45 pmSan Antonio
$406
Find similar
United Airlines
Sep 30
SAT4:39 pmSan Antonio
5h 13m
1 stop
IDA8:52 pmIdaho Falls Fanning Field
Oct 9
IDA2:35 pmIdaho Falls Fanning Field
5h 20m
1 stop
SAT8:55 pmSan Antonio
$440
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 September 19, 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

Wed 10/29

6:32 am-3:13 pm

1 stop9h 41m

Idaho Falls Fanning Field

Tue 11/4

3:50 pm-5:55 pm

1 stop25h 05m

$371

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

9:00 am-1:33 pm

1 stop5h 33m

Idaho Falls Fanning Field

Tue 10/7

5:00 am-12:45 pm

1 stop6h 45m

$401

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

5:30 am-1:33 pm

2 stops9h 03m

Idaho Falls Fanning Field

Tue 10/7

5:00 am-12:45 pm

1 stop6h 45m

$406

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

4:39 pm-8:52 pm

1 stop5h 13m

Idaho Falls Fanning Field

Thu 10/9

2:35 pm-8:55 pm

1 stop5h 20m

$440

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

9:47 am-5:18 pm

2 stops8h 31m

Idaho Falls Fanning Field

Thu 10/9

2:35 pm-8:55 pm

1 stop5h 20m

$445

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Wed 10/29

6:05 am-12:24 pm

1 stop7h 19m

Idaho Falls Fanning Field

Tue 11/4

7:10 am-10:51 pm

2 stops14h 41m

$454

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Fri 10/3

6:05 pm-10:25 pm

1 stop5h 20m

Idaho Falls Fanning Field

Tue 10/7

6:53 pm-12:31 am

1 stop4h 38m

$456

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 11/25

8:30 am-3:16 pm

1 stop7h 46m

Idaho Falls Fanning Field

Wed 12/3

10:58 am-4:54 pm

1 stop4h 56m

$460

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Wed 10/29

5:00 am-11:59 pm

2 stops19h 59m

Idaho Falls Fanning Field

Tue 11/4

3:50 pm-2:39 pm

2 stops21h 49m

$481

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Thu 12/18

6:05 pm-10:24 pm

1 stop5h 19m

Idaho Falls Fanning Field

Sat 12/27

6:57 pm-12:45 am

1 stop4h 48m

$710

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $431.

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

Direct flights

None
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 13m.

  • 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 $325Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $371Free CancellationRating
7.9
7,964 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.

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