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Cheap flights from San Diego to Idaho from $66

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 Diego to Idaho departing on 3/7. 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 San Diego to Idaho

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
7:24 pm - 10:20 pm
SAN
-
GEG
2h 56mnonstop
Alaska Airlines Logo
10:30 am - 1:18 pm
GEG
-
SAN
2h 48mnonstop
$137Alaska Airlines
Sat, May 9 - Tue, May 12
Alaska Airlines Logo
7:24 pm - 10:20 pm
SAN
-
GEG
2h 56mnonstop
Alaska Airlines Logo
6:00 am - 12:04 pm
GEG
-
SAN
6h 04m
1 stop
$147Alaska Airlines
Sat, May 9 - Tue, May 12
Delta Logo
5:20 pm - 10:42 pm
SAN
-
GEG
5h 22m
1 stop
Delta Logo
5:00 am - 10:04 am
GEG
-
SAN
5h 04m
1 stop
$157Delta
Sat, Feb 28 - Tue, Mar 3
Alaska Airlines Logo
8:04 pm - 11:30 pm
SAN
-
BOI
2h 26mnonstop
Alaska Airlines Logo
7:00 am - 8:26 am
BOI
-
SAN
2h 26mnonstop
$157Alaska Airlines
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
8:45 am - 11:27 am
SAN
-
GEG
26h 42m
1 stop
Frontier Logo
11:32 am - 12:08 am
GEG
-
SAN
12h 36m
1 stop
$173Frontier
Wed, Mar 4 - Sun, Mar 8
Delta Logo
6:45 pm - 12:04 am
SAN
-
GEG
5h 19m
1 stop
Delta Logo
5:00 am - 10:04 am
GEG
-
SAN
5h 04m
1 stop
$177Delta
Fri, Feb 27 - Wed, Mar 4
Southwest Logo
7:10 am - 2:20 pm
SAN
-
BOI
6h 10m
2 stops
Southwest Logo
6:10 pm - 7:20 pm
BOI
-
SAN
2h 10mnonstop
$182Southwest
Wed, Mar 4 - Fri, Mar 6
Southwest Logo
7:10 am - 2:20 pm
SAN
-
BOI
6h 10m
2 stops
Southwest Logo
7:25 pm - 11:05 pm
BOI
-
SAN
4h 40m
1 stop
$192Southwest
Wed, Mar 4 - Fri, Mar 6
United Airlines Logo
6:30 am - 1:44 pm
SAN
-
SUN
6h 14m
1 stop
United Airlines Logo
3:28 pm - 10:38 pm
SUN
-
SAN
8h 10m
1 stop
$249United Airlines
Wed, Mar 25 - Mon, Mar 30
United Airlines Logo
6:30 am - 3:40 pm
SAN
-
IDA
8h 10m
1 stop
United Airlines Logo
5:30 pm - 10:43 pm
IDA
-
SAN
6h 13m
1 stop
$292United Airlines
Wed, Mar 4 - Sun, Mar 8

Southwest flights from San Diego to Idaho

Our best Southwest deals on San Diego to Idaho flight tickets
Southwest
Mar 4
SAN7:10 amSan Diego
6h 10m
2 stops
BOI2:20 pmBoise Air Term. Gowen Fld
Mar 7
BOI7:10 amBoise Air Term. Gowen Fld
2h 20m
SAN8:30 amSan Diego
$172
Southwest
Mar 5
SAN8:20 amSan Diego
2h 25m
BOI11:45 amBoise Air Term. Gowen Fld
Mar 9
BOI7:30 amBoise Air Term. Gowen Fld
2h 15m
SAN8:45 amSan Diego
$177
Southwest
Mar 4
SAN7:10 amSan Diego
6h 10m
2 stops
BOI2:20 pmBoise Air Term. Gowen Fld
Mar 6
BOI6:10 pmBoise Air Term. Gowen Fld
2h 10m
SAN7:20 pmSan Diego
$182

Alaska Airlines flights from San Diego to Idaho

Our best Alaska Airlines deals on San Diego to Idaho flight tickets
Alaska Airlines
May 9
SAN7:24 pmSan Diego
2h 56m
GEG10:20 pmSpokane
May 12
GEG10:30 amSpokane
2h 48m
SAN1:18 pmSan Diego
$137
Alaska Airlines
May 9
SAN7:24 pmSan Diego
2h 56m
GEG10:20 pmSpokane
May 12
GEG6:00 amSpokane
6h 04m
1 stop
SAN12:04 pmSan Diego
$147
Alaska Airlines
Mar 4
SAN8:04 pmSan Diego
2h 26m
BOI11:30 pmBoise Air Term. Gowen Fld
Mar 7
BOI7:00 amBoise Air Term. Gowen Fld
2h 26m
SAN8:26 amSan Diego
$157

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Idaho 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 February 7, 2026.
Use the filters below to find and compare flights from San Diego to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 5/9

7:24 pm-10:20 pm

Nonstop2h 56m

Spokane

Tue 5/12

10:30 am-1:18 pm

Nonstop2h 48m

$137

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 5/9

7:24 pm-10:20 pm

Nonstop2h 56m

Spokane

Tue 5/12

6:00 am-12:04 pm

1 stop6h 04m

$147

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 2/28

5:20 pm-10:42 pm

1 stop5h 22m

Spokane

Tue 3/3

5:00 am-10:04 am

1 stop5h 04m

$157

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 3/4

8:04 pm-11:30 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Sat 3/7

7:00 am-8:26 am

Nonstop2h 26m

$157

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 3/4

8:45 am-11:27 am

1 stop26h 42m

Spokane

Sun 3/8

11:32 am-12:08 am

1 stop12h 36m

$173

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Fri 2/27

6:45 pm-12:04 am

1 stop5h 19m

Spokane

Wed 3/4

5:00 am-10:04 am

1 stop5h 04m

$177

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 3/4

7:10 am-2:20 pm

2 stops6h 10m

Boise Air Term. Gowen Fld

Fri 3/6

6:10 pm-7:20 pm

Nonstop2h 10m

$182

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 3/4

7:10 am-2:20 pm

2 stops6h 10m

Boise Air Term. Gowen Fld

Fri 3/6

7:25 pm-11:05 pm

1 stop4h 40m

$192

San DiegoHailey

SAN - SUN

SANSUN

San Diego

Wed 3/25

6:30 am-1:44 pm

1 stop6h 14m

Hailey Sun Valley-Friedman

Mon 3/30

3:28 pm-10:38 pm

1 stop8h 10m

$249

San DiegoIdaho Falls

SAN - IDA

SANIDA

San Diego

Wed 3/4

6:30 am-3:40 pm

1 stop8h 10m

Idaho Falls Fanning Field

Sun 3/8

5:30 pm-10:43 pm

1 stop6h 13m

$292

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 Idaho from

How to get the cheapest flight ticket from San Diego to Idaho

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?

In general, September is the cheapest month to fly from San Diego to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $216. If you don’t want to visit Idaho in September, then you should wait until April to fly from San Diego, when ticket prices are also cheap, with an average price of $222.

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

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $242. On the other hand, Monday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $347.

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

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from San Diego to Idaho at noon for as low as $247. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $347 per ticket.

What is the cheapest San Diego to Idaho flight route?

Fly from San Diego to Boise Air Term. Gowen Fld for the best San Diego - Idaho flight prices

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from San Diego for as low as $188 on momondo.

What cabin class options are available on San Diego to Idaho flights?

There are 4 cabin classes available to choose from on San Diego to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap San Diego to Idaho flight deals and tips

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

Best Price Found

$108

Fastest flight time

2h 10m

Direct flights

Every day

Airports in Idaho

27 airports
The best one-way flight to Idaho from San Diego in the past 72 hours is $108. The best round-trip flight deal from San Diego to Idaho found on momondo in the last 72 hours is $177.
The fastest flight from San Diego to Idaho takes 2h 10m
Direct flights go from San Diego to Idaho every day.
There are 27 airports in Idaho. From San Diego there are direct flights to Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Hailey Sun Valley-Friedman (SUN), Jackson Hole (JAC).
Search flight deals

  • When did momondo last update prices for flights from San Diego Airport to Idaho?

    Prices for flights from San Diego Airport to Idaho refresh daily.

  • How many operators does momondo search for flights from San Diego Airport to Idaho?

  • How old do you have to be to fly from San Diego Airport to Idaho?

    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 San Diego Airport to Idaho.

  • What documentation or ID do you need to fly to Idaho?

    The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Diego to Idaho?

Best airlines flying from San Diego to Idaho

Compare and see reviews for airlines that fly from San Diego to Idaho with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $144Free CancellationRating
7.9
8,162 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $155Free CancellationRating
7.8
2,831 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $157Free CancellationRating
8.0
11,847 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
United AirlinesPriceFrom $185Free CancellationRating
7.4
9,245 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Diego to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Idaho from San Diego which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Idaho from San Diego. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for San Diego to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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