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$166+ Cheap flights from Great Falls to San Diego (GTF - 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Great Falls to San Diego

Cheapest flights from Great Falls to San Diego
Explore the most affordable flight options available from Great Falls to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:20 pm
GTF
-
SAN
1 stop6h 26m
Delta
Wed 2/255:00 pm
SAN
-
GTF
1 stop4h 29m
Delta
Deal found 1/26$311
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
Sun 2/110:45 am
GTF
-
SAN
2 stops23h 06m
Multiple Airlines
Sun 2/810:51 am
SAN
-
GTF
1 stop28h 37m
Multiple Airlines
Deal found 1/24$322
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 4/610:22 am
GTF
-
SAN
1 stop6h 53m
Multiple Airlines
Sun 4/129:56 pm
SAN
-
GTF
1 stop11h 56m
Multiple Airlines
Deal found 1/24$333
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/134:57 pm
GTF
-
SAN
1 stop5h 52m
Alaska Airlines
Mon 3/168:59 pm
SAN
-
GTF
2 stops18h 18m
Alaska Airlines
Deal found 1/24$337
This Delta deal was found by Cheapflights users on 1/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:22 pm
GTF
-
SAN
1 stop4h 33m
Delta
Thu 4/95:01 pm
SAN
-
GTF
1 stop4h 29m
Delta
Deal found 1/24$360
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:20 pm
GTF
-
SAN
1 stop6h 26m
Delta
Thu 2/267:20 am
SAN
-
GTF
2 stops9h 13m
Delta
Deal found 1/25$366
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
Sun 2/224:57 pm
GTF
-
SAN
1 stop26h 33m
Alaska Airlines
Fri 2/278:26 pm
SAN
-
GTF
1 stop20h 22m
Alaska Airlines
Deal found 1/26$368
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
Sun 2/224:57 pm
GTF
-
SAN
1 stop7h 06m
Alaska Airlines
Wed 2/256:42 pm
SAN
-
GTF
2 stops20h 35m
Alaska Airlines
Deal found 1/26$375
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/55:06 pm
GTF
-
SAN
1 stop24h 50m
Alaska Airlines
Sun 4/128:43 pm
SAN
-
GTF
1 stop18h 43m
Alaska Airlines
Deal found 1/25$378

Find flight deals from Great Falls to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$311
(Delta)

One-way from

$166
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$308
Provider with most accurate pricing for Great Falls-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Great Falls-San Diego flights.
Search Deals
From Great Falls to San Diego
Search Deals
One-way flight from Great Falls to San Diego
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls 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 January 26, 2026.
Use the filters below to find and compare flights from Great Falls to San Diego that are best for you.

Fly from

Great Falls

Fly to

San Diego

Route

Depart

Return

Price

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 2/22

6:20 pm-11:46 pm

1 stop6h 26m

San Diego

Wed 2/25

5:00 pm-10:29 pm

1 stop4h 29m

$311

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Mon 4/6

10:22 am-4:15 pm

1 stop6h 53m

San Diego

Sun 4/12

9:56 pm-10:52 am

1 stop11h 56m

$333

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 3/13

4:57 pm-9:49 pm

1 stop5h 52m

San Diego

Mon 3/16

8:59 pm-4:17 pm

2 stops18h 18m

$337

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 4/4

6:22 pm-9:55 pm

1 stop4h 33m

San Diego

Mon 4/13

6:15 am-12:27 pm

1 stop5h 12m

$360

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 4/3

6:22 pm-11:44 pm

1 stop6h 22m

San Diego

Mon 4/6

5:01 pm-10:30 pm

1 stop4h 29m

$360

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 4/4

6:22 pm-9:55 pm

1 stop4h 33m

San Diego

Thu 4/9

5:01 pm-10:30 pm

1 stop4h 29m

$360

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 4/5

5:30 am-8:45 am

1 stop4h 15m

San Diego

Mon 4/13

6:15 am-12:27 pm

1 stop5h 12m

$360

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Thu 3/12

4:57 pm-11:03 pm

1 stop7h 06m

$166

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 3/28

5:06 pm-7:56 am

2 stops15h 50m

$167

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 3/28

6:22 pm-9:55 pm

1 stop4h 33m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 13 results
1
2

Compare providers for flights from Great Falls to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Great Falls to San Diego in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Great Falls-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Great Falls-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Great Falls to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Great Falls 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 Great Falls to San Diego

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

Currently, November is the cheapest month in which you can book a flight from Great Falls to San Diego (average of $168). Flying from Great Falls to San Diego in July is currently the most expensive (average of $324). 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated January 26, 2026.
Read reviews from past customers who have flown Delta from Great Falls to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,111 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • How long is the flight from Great Falls to San Diego?

    There are many flights that can get you from Great Falls to San Diego in 5h 52m. Fly via Delta or Alaska Airlines to get the fastest option. Great Falls and San Diego are separated by a distance of 1063 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Great Falls to San Diego round-trip?

    According to our current data, Delta ($194), offers the cheapest pricing from Great Falls to San Diego. Users have found that Delta is 58% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Great Falls 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 Great Falls to San Diego?

    Currently, November is the cheapest month in which you can book a flight from Great Falls to San Diego (average of $168). Flying from Great Falls to San Diego in July is currently the most expensive (average of $324). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top airline flying from Great Falls to San Diego

Discover the top airline that operate flights from Great Falls 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$194Average$396FlexibilityNo cancel feeOn-timeN/A

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