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$85+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SAN
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheap 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 August 13, 2025.

Round-trip from

$175
(United Airlines)

One-way from

$85
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$311

Good one-way deal

$138 or less
From Montana to San Diego
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One-way flight from Montana to San Diego
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a one-way flight from Montana to San Diego.
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Find 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 August 13, 2025.

This United Airlines deal was found by Cheapflights users on 8/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:00 pmBZN - SAN
1 stop4h 46mUnited Airlines
Tue 9/306:53 amSAN - BZN
1 stop7h 31mUnited Airlines
Deal found 8/10$175
This Mytrip deal was found by Cheapflights users on 8/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/249:30 pmFCA - SAN
1 stop10h 51mMultiple Airlines
Sun 9/76:15 amSAN - FCA
1 stop9h 28mMultiple Airlines
Deal found 8/11$183
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/34:00 pmBZN - SAN
1 stop4h 46mUnited Airlines
Sun 9/76:15 amSAN - BZN
1 stop7h 17mUnited Airlines
Deal found 8/12$186
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/45:33 pmFCA - SAN
1 stop7h 01mMultiple Airlines
Sat 9/67:47 pmSAN - FCA
1 stop19h 56mMultiple Airlines
Deal found 8/13$190
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:25 amBZN - SAN
1 stop5h 25mSouthwest
Mon 9/153:45 pmSAN - BZN
1 stop5h 50mSouthwest
Deal found 8/13$197
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/224:48 pmMSO - SAN
1 stop6h 38mMultiple Airlines
Thu 9/257:47 pmSAN - MSO
1 stop17h 17mMultiple Airlines
Deal found 8/11$200
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:00 pmBZN - SAN
1 stop7h 15mSouthwest
Tue 9/302:20 pmSAN - BZN
2 stops7h 35mSouthwest
Deal found 8/11$202
This Southwest deal was found by Cheapflights users on 8/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2611:20 amBZN - SAN
1 stop12h 45mSouthwest
Tue 9/308:30 amSAN - BZN
2 stops7h 20mSouthwest
Deal found 8/12$208
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/411:29 amBZN - SAN
1 stop8h 13mMultiple Airlines
Sun 9/78:25 amSAN - BZN
1 stop5h 27mMultiple Airlines
Deal found 8/13$210
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:19 pmBZN - SAN
1 stop7h 17mAmerican Airlines
Wed 10/110:42 amSAN - BZN
1 stop7h 35mAmerican Airlines
Deal found 8/11$211
This Southwest deal was found by Cheapflights users on 8/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:25 pmBZN - SAN
1 stop5h 45mSouthwest
Sun 9/75:15 pmSAN - BZN
1 stop4h 50mSouthwest
Deal found 8/12$212
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/237:20 amBZN - SAN
1 stop8h 10mAmerican Airlines
Tue 9/306:20 amSAN - BZN
2 stops11h 57mAmerican Airlines
Deal found 8/10$216

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 August 13, 2025.
Use the filters below to find and compare flights from Montana to San Diego that are best for you.

Fly from

Montana

Fly to

San Diego

Route

Depart

Return

Price

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Tue 9/23

4:00 pm-7:46 pm

1 stop4h 46m

San Diego

Tue 9/30

6:53 am-3:24 pm

1 stop7h 31m

$175

KalispellSan Diego

FCA - SAN

FCASAN

Kalispell Glacier Park

Sun 8/24

9:30 pm-7:21 am

1 stop10h 51m

San Diego

Sun 9/7

6:15 am-4:43 pm

1 stop9h 28m

$183

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 11/7

4:35 pm-10:29 pm

1 stop6h 54m

San Diego

Tue 11/11

9:00 am-3:30 pm

1 stop5h 30m

$186

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Wed 9/3

4:00 pm-7:46 pm

1 stop4h 46m

San Diego

Sun 9/7

6:15 am-2:32 pm

1 stop7h 17m

$186

KalispellSan Diego

FCA - SAN

FCASAN

Kalispell Glacier Park

Thu 9/4

5:33 pm-11:34 pm

1 stop7h 01m

San Diego

Sat 9/6

7:47 pm-4:43 pm

1 stop19h 56m

$190

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 9/25

6:25 am-10:50 am

1 stop5h 25m

San Diego

Tue 9/30

11:20 am-4:50 pm

1 stop4h 30m

$197

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 9/12

6:25 am-12:25 pm

1 stop7h 00m

San Diego

Fri 9/19

3:45 pm-10:35 pm

1 stop5h 50m

$197

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Thu 10/9

6:00 am-10:20 am

1 stop5h 20m

San Diego

Mon 10/13

4:15 pm-11:10 pm

1 stop5h 55m

$197

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 11/7

4:35 pm-10:29 pm

1 stop6h 54m

San Diego

Mon 11/10

6:45 am-3:30 pm

1 stop7h 45m

$197

BozemanSan Diego

BZN - SAN

BZNSAN

Bozeman Gallatin Field

Fri 9/12

6:25 am-10:50 am

1 stop5h 25m

San Diego

Mon 9/15

3:45 pm-10:35 pm

1 stop5h 50m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Montana to San Diego (average of $286). Flying from Montana to San Diego in March is currently the most expensive (average of $366). 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 August 13, 2025.

When flying from Montana to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

  • 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, Kalispell Glacier Park - San Diego and Missoula Johnson-Bell Field - 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: SkyWest Airlines (76%), American Airlines (76%), Alaska Airlines (76%).

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

    On average you can expect to pay $318 for a flight from Montana to San Diego. The cheapest flight overall is $138 while the most popular route, (Bozeman Gallatin Field - San Diego) is currently priced at $186.

  • 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, August is the cheapest month in which you can book a flight from Montana to San Diego (average of $286). Flying from Montana to San Diego in March is currently the most expensive (average of $366). 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
Chula Vista
Coronado
La Mesa
Poway
National City
Lemon Grove
Imperial Beach
Alpine

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Alternative routes for Montana to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Montana to San Diego

Discover the top 6 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 August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$176Average$395FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$196Average$307FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$392FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$216Average$367FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$220Average$347FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$286Average$355FlexibilityNo cancel feeOn-time85%

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