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$170+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
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 June 12, 2026.

This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:09 pm
GTF
-
SAN
2 stops20h 11m
Alaska Airlines
Wed 8/269:30 pm
SAN
-
GTF
2 stops18h 08m
Alaska Airlines
Deal found 6/10$407
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:18 pm
GTF
-
SAN
1 stop7h 26m
Alaska Airlines
Wed 9/24:50 pm
SAN
-
GTF
1 stop22h 48m
Alaska Airlines
Deal found 6/12$432
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:15 pm
GTF
-
SAN
2 stops15h 12m
Alaska Airlines
Sat 10/249:08 am
SAN
-
GTF
1 stop6h 27m
Alaska Airlines
Deal found 6/11$434
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 10/35:15 pm
GTF
-
SAN
1 stop6h 43m
Alaska Airlines
Tue 10/69:08 am
SAN
-
GTF
1 stop6h 27m
Alaska Airlines
Deal found 6/7$441
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:19 pm
GTF
-
SAN
1 stop21h 02m
Alaska Airlines
Sun 9/137:15 am
SAN
-
GTF
1 stop8h 24m
Alaska Airlines
Deal found 6/12$447

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 June 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$407
(Alaska Airlines)

One-way from

$170
(Kiwi.com)

Popular in

December

Cheapest in

October
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. 15% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($52 potential savings vs. average RT price).
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 June 12, 2026.
Use the filters below to find and compare flights from Great Falls to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 8/18

5:09 pm-10:08 am

2 stops17h 59m

San Diego

Wed 8/26

7:15 am-4:38 pm

1 stop8h 23m

$415

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Wed 8/26

5:18 pm-11:44 pm

1 stop7h 26m

San Diego

Wed 9/2

4:50 pm-4:38 pm

1 stop22h 48m

$432

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 10/20

5:15 pm-7:27 am

2 stops15h 12m

San Diego

Sat 10/24

9:08 am-4:35 pm

1 stop6h 27m

$434
Quickest round-trip

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 10/3

5:15 pm-11:59 pm

1 stop7h 44m

San Diego

Tue 10/6

9:08 am-4:35 pm

1 stop6h 27m

$441

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 9/11

5:19 pm-10:46 am

1 stop18h 27m

San Diego

Sun 9/13

9:31 am-4:39 pm

1 stop6h 08m

$452

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 11/13

4:57 pm-2:42 pm

1 stop22h 45m

San Diego

Sat 11/21

7:00 am-4:13 pm

1 stop8h 13m

$473
Cheapest one-way
Quickest one-way

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 7/17

10:24 am-8:06 pm

1 stop10h 42m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Sorted by cheapest first

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 June.
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.

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 June 12, 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
8,400 reviews

Boarding

8.1

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

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
8,400 reviews
Delta
7.9
Good
8,400 reviews

Boarding

8.1

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

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 17h 59m. Fly via Alaska Airlines to get the fastest option. Great Falls and San Diego are separated by a distance of 1063 mi.

  • 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 62% 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.

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
Coronado
La Mesa
Santee
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 June 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$194Average$419FlexibilityNo cancel feeOn-timeN/A

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