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Cheap flights from Idaho to San Diego from $55

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 to San Diego departing on 12/11. 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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Cheap round-trip flights

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Hawaiian Airlines Logo
9:05 am - 3:29 pmGEG-SAN
6h 24m1 stop
Hawaiian Airlines Logo
11:03 am - 2:06 pmSAN-GEG
3h 03mnonstop
$152Hawaiian Airlines
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Thu, Feb 5 - Sat, Feb 7
Alaska Airlines Logo
3:00 pm - 5:50 pmGEG-SAN
2h 50mnonstop
Alaska Airlines Logo
7:27 pm - 10:26 pmSAN-GEG
2h 59mnonstop
$156Alaska Airlines
Find Deal
Sat, Jan 24 - Mon, Jan 26
Multiple Airlines Logo
12:08 pm - 7:15 pmGEG-SAN
7h 07m1 stop
Multiple Airlines Logo
8:58 pm - 11:59 pmSAN-GEG
3h 01mnonstop
$158Multiple Airlines
Find Deal
Sun, Dec 7 - Wed, Dec 10
Multiple Airlines Logo
12:08 pm - 11:59 pmGEG-SAN
11h 51m1 stop
Multiple Airlines Logo
8:58 pm - 11:59 pmSAN-GEG
3h 01mnonstop
$169Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
1:20 pm - 6:00 pmGEG-SAN
4h 40m1 stop
Delta Logo
1:40 pm - 12:06 amSAN-GEG
10h 26m1 stop
$172Delta
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Tue, Feb 3 - Fri, Feb 13
Delta Logo
3:35 pm - 10:45 pmGEG-SAN
7h 10m1 stop
Delta Logo
7:07 pm - 11:59 pmSAN-GEG
4h 52m1 stop
$174Delta
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Sat, Dec 6 - Mon, Dec 8
Southwest Logo
3:45 pm - 9:10 pmBOI-SAN
6h 25m1 stop
Southwest Logo
7:20 pm - 12:45 amSAN-BOI
4h 25m1 stop
$183Southwest
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Wed, Dec 17 - Mon, Jan 5
Southwest Logo
12:10 pm - 7:40 pmGEG-SAN
7h 30m1 stop
Southwest Logo
2:00 pm - 8:50 pmSAN-GEG
6h 50m2 stops
$183Southwest
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Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
2:48 pm - 6:30 pmBOI-SAN
4h 42m1 stop
American Airlines Logo
6:15 am - 2:08 pmSAN-BOI
6h 53m1 stop
$194American Airlines
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Fri, Jan 23 - Thu, Jan 29
American Airlines Logo
6:35 am - 1:37 pmGEG-SAN
7h 02m1 stop
American Airlines Logo
4:25 pm - 11:08 pmSAN-GEG
6h 43m1 stop
$196American Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8

Southwest flights from Idaho to San Diego

Our best Southwest deals on Idaho to San Diego flight tickets
Southwest
Dec 17
BOI3:45 pmBoise Air Term. Gowen Fld
6h 25m
1 stop
SAN9:10 pmSan Diego
Jan 5
SAN7:20 pmSan Diego
4h 25m
1 stop
BOI12:45 amBoise Air Term. Gowen Fld
$183
Find similar
Southwest
Jan 12
BOI4:00 pmBoise Air Term. Gowen Fld
5h 25m
1 stop
SAN8:25 pmSan Diego
Jan 19
SAN6:30 amSan Diego
4h 50m
1 stop
BOI12:20 pmBoise Air Term. Gowen Fld
$190
Find similar
Southwest
Jan 30
BOI11:20 amBoise Air Term. Gowen Fld
6h 25m
1 stop
SAN4:45 pmSan Diego
Feb 2
SAN3:40 pmSan Diego
5h 50m
1 stop
BOI10:30 pmBoise Air Term. Gowen Fld
$193
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United Airlines flights from Idaho to San Diego

Our best United Airlines deals on Idaho to San Diego flight tickets
United Airlines
Jan 15
IDA2:40 pmIdaho Falls Fanning Field
7h 02m
1 stop
SAN8:42 pmSan Diego
Jan 20
SAN6:30 amSan Diego
6h 00m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
$269
Find similar
United Airlines
Mar 25
IDA4:19 pmIdaho Falls Fanning Field
7h 16m
1 stop
SAN10:35 pmSan Diego
Apr 1
SAN6:25 amSan Diego
5h 59m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
$281
Find similar
United Airlines
Dec 5
IDA4:19 pmIdaho Falls Fanning Field
7h 11m
1 stop
SAN10:30 pmSan Diego
Dec 8
SAN6:30 amSan Diego
6h 05m
1 stop
IDA1:35 pmIdaho Falls Fanning Field
$295
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to San Diego 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 11, 2025.
Use the filters below to find and compare flights from Idaho to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Thu 2/5

9:05 am-3:29 pm

1 stop6h 24m

San Diego

Sat 2/7

11:03 am-2:06 pm

Nonstop3h 03m

$152

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 1/24

3:00 pm-5:50 pm

Nonstop2h 50m

San Diego

Mon 1/26

7:27 pm-10:26 pm

Nonstop2h 59m

$156

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sun 12/7

12:08 pm-7:15 pm

1 stop7h 07m

San Diego

Wed 12/10

8:58 pm-11:59 pm

Nonstop3h 01m

$158

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Thu 12/4

12:08 pm-11:59 pm

1 stop11h 51m

San Diego

Thu 12/11

8:58 pm-11:59 pm

Nonstop3h 01m

$169

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 2/3

1:20 pm-6:00 pm

1 stop4h 40m

San Diego

Fri 2/13

1:40 pm-12:06 am

1 stop10h 26m

$172

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 12/6

3:35 pm-10:45 pm

1 stop7h 10m

San Diego

Mon 12/8

7:07 pm-11:59 pm

1 stop4h 52m

$174

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Wed 12/17

3:45 pm-9:10 pm

1 stop6h 25m

San Diego

Mon 1/5

7:20 pm-12:45 am

1 stop4h 25m

$183

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Fri 1/9

12:10 pm-7:40 pm

1 stop7h 30m

San Diego

Mon 1/12

2:00 pm-8:50 pm

2 stops6h 50m

$183

BoiseSan Diego

BOI - SAN

BOISAN

Boise Air Term. Gowen Fld

Fri 1/23

2:48 pm-6:30 pm

1 stop4h 42m

San Diego

Thu 1/29

6:15 am-2:08 pm

1 stop6h 53m

$194

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 12/6

6:35 am-1:37 pm

1 stop7h 02m

San Diego

Mon 12/8

4:25 pm-11:08 pm

1 stop6h 43m

$196

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 Diego from

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

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 Diego?

If you are unable to visit San Diego during the month of October, then departing from Idaho during the month September is also very affordable. Most momondo users find prices during this month for around $227.

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

The cheapest day to depart from Idaho to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $314. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $434. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

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

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $323. Flights in the morning are often more expensive with an average ticket price of $372.

What is the cheapest Idaho to San Diego flight route?

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

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $290 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Idaho for as low as $217 on momondo.

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

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

Can stopping save me money on Idaho to San Diego flights?

No. A direct flight is the cheapest option for a flight between Idaho to San Diego.

Cheap Idaho to San Diego flight deals and tips

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

Best Price Found

$78

Fastest flight time

2h 10m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Idaho in the past 72 hours is $78. The best round-trip flight deal from Idaho to San Diego found on momondo in the last 72 hours is $247.
The fastest flight from Idaho to San Diego takes 2h 10m
Direct flights go from Idaho to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

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

    Prices for flights from Idaho to San Diego Airport are refreshed on a daily basis.

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

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

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

    The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Idaho to San Diego

Compare and see reviews for airlines that fly from Idaho to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $96Free CancellationRating
6.3
8,137 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $137Free CancellationRating
7.8
2,806 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $147Free CancellationRating
7.9
8,004 reviews
Search Delta flights
Alaska AirlinesPriceFrom $149Free CancellationRating
8.0
11,270 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $175Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $186Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Imperial Beach
La Mesa
Poway
Borrego Springs
San Ysidro
Lemon Grove
Alpine
Santee

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to San Diego for you.

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

Flights from Idaho to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Idaho and San Diego by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to San Diego from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Diego 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.
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