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$128+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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, 2025.

Round-trip from

$192
(Mytrip)

One-way from

$128
(Delta)

Popular in

December

Cheapest in

January

Average price

$459
From Great Falls to San Diego
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One-way flight from Great Falls to San Diego
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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, 2025.

This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2710:17 amGTF - SAN
1 stop14h 12mMultiple Airlines
Tue 7/17:31 pmSAN - GTF
1 stop24h 58mMultiple Airlines
Deal found 6/12$192
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/272:35 pmGTF - SAN
1 stop7h 03mUnited Airlines
Tue 7/16:15 amSAN - GTF
2 stops13h 58mUnited Airlines
Deal found 6/12$664
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2711:42 amGTF - SAN
2 stops11h 45mDelta
Tue 7/16:17 amSAN - GTF
2 stops10h 21mDelta
Deal found 6/12$714
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 6/244:55 pmGTF - SAN
2 stops17h 07mAlaska Airlines
Mon 6/307:57 pmSAN - GTF
2 stops43h 16mAlaska Airlines
Deal found 6/10$745

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, 2025.
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

Fri 6/27

10:17 am-11:29 pm

1 stop14h 12m

San Diego

Tue 7/1

7:31 pm-9:29 pm

1 stop24h 58m

$192

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 6/27

2:35 pm-8:38 pm

1 stop7h 03m

San Diego

Tue 7/1

6:15 am-9:13 pm

2 stops13h 58m

$664

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 6/27

11:42 am-10:27 pm

2 stops11h 45m

San Diego

Tue 7/1

6:17 am-5:38 pm

2 stops10h 21m

$714

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 6/24

4:55 pm-9:02 am

2 stops17h 07m

San Diego

Mon 6/30

7:57 pm-4:13 pm

2 stops43h 16m

$745

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 10/28

5:30 am-9:04 am

1 stop4h 34m

$128

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 7/6

8:02 pm-6:10 pm

2 stops23h 08m

$347

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Thu 6/19

4:55 pm-8:21 am

2 stops16h 26m

$373

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 10/28

2:30 pm-3:08 pm

3 stops25h 38m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, August is the cheapest month in which you can book a flight from Great Falls to San Diego (average of $286). Flying from Great Falls 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.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Great Falls to San Diego. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from Great Falls to San Diego round-trip?

    According to our current data, United Airlines ($664), Delta ($714), and Alaska Airlines ($745) offers the cheapest pricing from Great Falls to San Diego.

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

    $128 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Allegiant Air and Alaska Airlines, with prices starting from $347 and $373, respectively.

  • 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, August is the cheapest month in which you can book a flight from Great Falls to San Diego (average of $286). Flying from Great Falls 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 Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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Top 2 airlines flying from Great Falls to San Diego

Discover the top 2 airlines 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, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$244Average$426FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$283Average$321FlexibilityNo cancel feeOn-time75%

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