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San Diego

$80+ Cheap flights from Montana to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SAN
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Montana to San Diego

Cheapest flights from Montana to San Diego
Explore the most affordable flight options available from Montana to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:08 pm
BZN
-
SAN
1 stop19h 54m
Multiple Airlines
Thu 10/297:24 pm
SAN
-
BZN
1 stop18h 37m
Multiple Airlines
Deal found 7/23$163
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:51 pm
BZN
-
SAN
1 stop18h 11m
Multiple Airlines
Tue 10/69:57 am
SAN
-
BZN
1 stop25h 52m
Multiple Airlines
Deal found 7/23$176
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:39 pm
BZN
-
SAN
2 stops20h 41m
Multiple Airlines
Tue 10/131:35 pm
SAN
-
BZN
1 stop22h 14m
Multiple Airlines
Deal found 7/23$182
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:51 pm
BZN
-
SAN
1 stop18h 11m
Multiple Airlines
Thu 10/87:13 pm
SAN
-
BZN
1 stop18h 48m
Multiple Airlines
Deal found 7/23$185
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:58 pm
BIL
-
SAN
2 stops24h 17m
Multiple Airlines
Thu 8/278:59 pm
SAN
-
BIL
1 stop17h 11m
Multiple Airlines
Deal found 7/24$191
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:08 pm
FCA
-
SAN
2 stops17h 32m
Multiple Airlines
Thu 10/2911:18 am
SAN
-
FCA
1 stop21h 14m
Multiple Airlines
Deal found 7/27$192
This Alaska Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:20 am
BZN
-
SAN
2 stops7h 56m
Alaska Airlines
Tue 10/139:58 pm
SAN
-
BZN
2 stops14h 17m
Alaska Airlines
Deal found 7/23$194
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:43 pm
BZN
-
SAN
1 stop17h 57m
Multiple Airlines
Thu 10/157:13 pm
SAN
-
BZN
1 stop18h 48m
Multiple Airlines
Deal found 7/25$197
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:39 pm
BZN
-
SAN
1 stop24h 01m
Multiple Airlines
Wed 10/141:35 pm
SAN
-
BZN
2 stops18h 31m
Multiple Airlines
Deal found 7/25$200
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:26 am
BZN
-
SAN
2 stops27h 14m
Multiple Airlines
Thu 10/157:13 pm
SAN
-
BZN
1 stop18h 48m
Multiple Airlines
Deal found 7/25$201
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:01 pm
BZN
-
SAN
2 stops31h 28m
Multiple Airlines
Tue 10/131:35 pm
SAN
-
BZN
1 stop22h 14m
Multiple Airlines
Deal found 7/23$204
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:04 pm
BZN
-
SAN
1 stop20h 58m
Multiple Airlines
Tue 10/69:57 am
SAN
-
BZN
1 stop25h 52m
Multiple Airlines
Deal found 7/23$206

Find flight deals from Montana to San Diego

Keep the following information in mind while searching for Montana to San Diego flight deals. Data was last updated July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$163
(Kiwi.com)

One-way from

$80
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$324

Good round-trip deal

$326 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Bozeman Gallatin Field-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-San Diego flights.
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From Montana to San Diego
Search Deals
One-way flight from Montana to San Diego
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Montana to San Diego.
Search Deals
Price to beat on a one-way flight from Montana to San Diego.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana 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, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
Use the filters below to find and compare flights from Montana to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 9/3

2:30 pm-4:15 pm

Nonstop2h 45m

San Diego

Sat 9/12

2:35 pm-8:10 pm

1 stop4h 35m

$227

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Sat 10/10

4:19 pm-8:08 pm

1 stop4h 49m

San Diego

Sat 10/17

7:30 am-3:14 pm

1 stop6h 44m

$237

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Mon 10/5

1:08 pm-6:06 pm

1 stop5h 58m

San Diego

Mon 10/12

7:05 pm-12:17 am

1 stop4h 12m

$237
Quickest round-trip

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 9/11

9:20 am-11:05 am

Nonstop2h 45m

San Diego

Sun 9/13

5:00 pm-8:45 pm

Nonstop2h 45m

$237

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Tue 10/13

5:30 am-8:47 am

1 stop4h 17m

San Diego

Wed 10/14

7:05 pm-12:27 am

1 stop4h 22m

$247

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 9/24

9:20 am-11:05 am

Nonstop2h 45m

San Diego

Mon 9/28

9:09 pm-2:46 pm

2 stops16h 37m

$259

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 8/20

3:30 pm-9:10 pm

2 stops6h 40m

San Diego

Sun 8/23

11:40 am-3:25 pm

Nonstop2h 45m

$282

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 8/13

1:00 pm-3:56 pm

1 stop3h 56m

San Diego

Mon 8/17

5:01 pm-12:04 am

1 stop6h 03m

$287

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 9/3

9:20 am-11:05 am

Nonstop2h 45m

San Diego

Mon 9/7

9:07 pm-2:46 pm

2 stops16h 39m

$307

KalispellSan Diego

FCA - SAN

FCASAN

Kalispell Glacier Park

Fri 9/4

3:34 pm-8:14 pm

1 stop5h 40m

San Diego

Wed 9/9

7:04 pm-7:53 pm

2 stops47h 49m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Montana to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to San Diego

What is the cheapest month to book a flight from Montana to San Diego?

Currently, January is the cheapest month in which you can book a flight from Montana to San Diego (average of $308). Flying from Montana to San Diego in July is currently the most expensive (average of $437). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MT to SAN?

Find hourly flight availability from Montana to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2026.

A simple way to save on the total cost of your ticket is to fly from Montana to San Diego in the afternoon. If you’re flexible enough to do this you can expect to save up to 61% on your trip compared to booking a flight at noon.

Weekly flight availability from Montana to San Diego

Explore weekly flight availability from Montana to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2026.

The most flights from USMT to SAN are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Montana to San Diego?

Airfare is below average for this route at the moment.
Montana to San Diego flights typically cost between $241 and $451 in October.
The cheapest round-trip price found within the last 5 days was $163 on Multiple Airlines (Oct 26-Oct 29).

How far ahead should I book a flight from Montana to San Diego?

To ensure you get the cheapest price possible for a flight from Montana to San Diego, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

Find useful and relevant information for your journey from Montana to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Montana?

    Located just 2.6 mi from the city center, San Diego (SAN) is the airport most travelers will use when flying to San Diego from Montana.

  • How popular is this Montana to San Diego flight route?

    Within the past month, 1 users have taken a look at flights from Montana to San Diego.

  • How long is the flight from Montana to San Diego?

    Airlines like Southwest, United Airlines, and Delta fly from Montana to San Diego in about 2h 45m. The time it takes to get you to your destination can typically vary by up to 3h 13m. Airlines will cover a distance of 956 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Montana to San Diego one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $88. Users have also found prices from $88 and $93 on Southwest and Alaska Airlines, respectively.

  • What are the most popular routes from Montana to San Diego?

    The most popular flight routes from Montana to San Diego are Bozeman Gallatin Field - San Diego, Missoula Johnson-Bell Field - San Diego and Billings Logan Intl - San Diego.

  • What are the most reliable airlines from Montana to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montana to San Diego on time: American Airlines (88%), Alaska Airlines (88%), Horizon Air (88%).

  • What are the cheapest flights from Montana to San Diego?

    On average you can expect to pay $306 for a flight from Montana to San Diego. The cheapest flight overall is $93 while the most popular route, (Bozeman Gallatin Field - San Diego) is currently priced at $217.

  • Can I find deals for flights from Montana to San Diego that include hotel bookings?

    Yes. In addition to deals on Montana to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to San Diego.

  • Can I find deals for business class flights from Montana to San Diego?

    Yes. Cheapflights offers flight deals from Montana to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to San Diego?

    Currently, January is the cheapest month in which you can book a flight from Montana to San Diego (average of $308). Flying from Montana to San Diego in July is currently the most expensive (average of $437). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

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

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Top 4 airlines flying from Montana to San Diego

Discover the top 4 airlines that operate flights from Montana to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$119Average$385FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$148Average$369FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$159Average$380FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$196Average$312FlexibilityNo cancel feeOn-time63%

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