What is the cheapest airline that flies from Great Falls to San Diego?

Alaska Airlines is the most popular carrier operating from Great Falls to San Diego

When did momondo last update prices for flights from Great Falls Airport to San Diego Airport?

Prices for flights from Great Falls Airport to San Diego Airport refresh daily.

How many operators does momondo search for flights from Great Falls Airport to San Diego Airport?

The number of operators available for flights from Great Falls Airport to San Diego Airport is 1 as of December 2025.

How old do you have to be to fly from Great Falls Airport to San Diego Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$133 Cheap Flights from Great Falls to San Diego in 2025/26

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Find the cheapest flights from Great Falls to San Diego

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:42 am - 8:24 pm

GTF

SAN

34h 42m2 stops

2:38 pm - 9:51 am

SAN

GTF

18h 13m1 stop

$224Multiple Airlines

Mon, Feb 16 - Thu, Feb 26

5:59 pm - 8:58 pm

GTF

SAN

27h 59m1 stop

6:15 am - 5:19 pm

SAN

GTF

10h 04m1 stop

$254Alaska Airlines

Tue, Jan 27 - Sat, Jan 31

4:57 pm - 11:03 pm

GTF

SAN

7h 06m1 stop

7:26 pm - 4:17 pm

SAN

GTF

19h 51m1 stop

$263Alaska Airlines

Fri, Mar 6 - Mon, Mar 9

4:57 pm - 10:04 am

GTF

SAN

18h 07m1 stop

6:15 am - 4:17 pm

SAN

GTF

9h 02m1 stop

$264Alaska Airlines

Tue, Feb 17 - Thu, Feb 26

5:59 pm - 7:19 pm

GTF

SAN

26h 20m1 stop

9:37 am - 5:19 pm

SAN

GTF

6h 42m1 stop

$274Alaska Airlines

Wed, Jan 21 - Sat, Jan 31

5:59 pm - 10:07 am

GTF

SAN

17h 08m1 stop

9:37 am - 5:19 pm

SAN

GTF

6h 42m1 stop

$284Alaska Airlines

Thu, Jan 22 - Sat, Jan 31

10:42 am - 11:47 pm

GTF

SAN

14h 05m2 stops

2:52 pm - 9:52 am

SAN

GTF

18h 00m1 stop

$293Multiple Airlines

Mon, Feb 16 - Sun, Feb 22

10:45 am - 10:24 am

GTF

SAN

24h 39m1 stop

10:34 am - 9:55 am

SAN

GTF

22h 21m2 stops

$297Multiple Airlines

Thu, Jan 22 - Sat, Jan 31

5:59 pm - 2:13 pm

GTF

SAN

21h 14m2 stops

9:37 am - 5:19 pm

SAN

GTF

6h 42m1 stop

$299Alaska Airlines

Tue, Jan 27 - Sat, Jan 31

4:57 pm - 3:17 pm

GTF

SAN

23h 20m2 stops

7:26 pm - 5:48 pm

SAN

GTF

21h 22m1 stop

$302Alaska Airlines

Tue, Feb 17 - Tue, Feb 24

Alaska Airlines flights from Great Falls to San Diego

Our best Alaska Airlines deals on Great Falls to San Diego flight tickets

Alaska Airlines

Feb 17

GTF4:57 pmGreat Falls

18h 07m

1 stop

SAN10:04 amSan Diego

Feb 25

SAN6:15 amSan Diego

10h 33m

1 stop

GTF5:48 pmGreat Falls

$254

Find similar

Alaska Airlines

Mar 6

GTF4:57 pmGreat Falls

7h 06m

1 stop

SAN11:03 pmSan Diego

Mar 9

SAN7:26 pmSan Diego

19h 51m

1 stop

GTF4:17 pmGreat Falls

$263

Find similar

Alaska Airlines

Feb 17

GTF4:57 pmGreat Falls

18h 07m

1 stop

SAN10:04 amSan Diego

Feb 26

SAN6:15 amSan Diego

9h 02m

1 stop

GTF4:17 pmGreat Falls

$264

Find similar

United Airlines flights from Great Falls to San Diego

Our best United Airlines deals on Great Falls to San Diego flight tickets

United Airlines

Jan 13

GTF2:29 pmGreat Falls

7h 13m

1 stop

SAN8:42 pmSan Diego

Jan 17

SAN6:30 amSan Diego

6h 18m

1 stop

GTF1:48 pmGreat Falls

$562

Find similar

United Airlines

Jan 2

GTF2:35 pmGreat Falls

23h 27m

2 stops

SAN1:02 pmSan Diego

Jan 4

SAN6:30 amSan Diego

6h 09m

1 stop

GTF1:39 pmGreat Falls

$1,033

Find similar

United Airlines

Jan 2

GTF2:35 pmGreat Falls

23h 27m

2 stops

SAN1:02 pmSan Diego

Jan 4

SAN6:15 amSan Diego

30h 24m

2 stops

GTF1:39 pmGreat Falls

$1,091

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Mon 2/16

10:42 am-8:24 pm

2 stops34h 42m

San Diego

Thu 2/26

2:38 pm-9:51 am

1 stop18h 13m

$224

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 1/27

5:59 pm-8:58 pm

1 stop27h 59m

San Diego

Sat 1/31

6:15 am-5:19 pm

1 stop10h 04m

$254

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 3/6

4:57 pm-11:03 pm

1 stop7h 06m

San Diego

Mon 3/9

7:26 pm-4:17 pm

1 stop19h 51m

$263

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 2/17

4:57 pm-10:04 am

1 stop18h 07m

San Diego

Thu 2/26

6:15 am-4:17 pm

1 stop9h 02m

$264

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Wed 1/21

5:59 pm-7:19 pm

1 stop26h 20m

San Diego

Sat 1/31

9:37 am-5:19 pm

1 stop6h 42m

$274

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Thu 1/22

5:59 pm-10:07 am

1 stop17h 08m

San Diego

Sat 1/31

9:37 am-5:19 pm

1 stop6h 42m

$284

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Mon 2/16

10:42 am-11:47 pm

2 stops14h 05m

San Diego

Sun 2/22

2:52 pm-9:52 am

1 stop18h 00m

$293

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Thu 1/22

10:45 am-10:24 am

1 stop24h 39m

San Diego

Sat 1/31

10:34 am-9:55 am

2 stops22h 21m

$297

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 1/27

5:59 pm-2:13 pm

2 stops21h 14m

San Diego

Sat 1/31

9:37 am-5:19 pm

1 stop6h 42m

$299

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 2/17

4:57 pm-3:17 pm

2 stops23h 20m

San Diego

Tue 2/24

7:26 pm-5:48 pm

1 stop21h 22m

$302

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Great Falls to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of October, then departing from Great Falls during the month January is also very affordable. Most momondo users find prices during this month for around $308.

When to book flights from Great Falls to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Great Falls to San Diego (GTF to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to San Diego

Fastest flight time	6h 22m
Direct flights	None

The fastest flight from Great Falls to San Diego takes 6h 22m

There are no direct flights from Great Falls to San Diego. There are no popular flight routes from Great Falls to San Diego.

Search flight deals

How far is Great Falls to San Diego by plane?
The distance between Great Falls and San Diego is about 1065.8 mi. In terms of flight time, this usually takes a little over 6h 22m.
When did momondo last update prices for flights from Great Falls Airport to San Diego Airport?
Prices for flights from Great Falls Airport to San Diego Airport refresh daily.
How many operators does momondo search for flights from Great Falls Airport to San Diego Airport?
The number of operators available for flights from Great Falls Airport to San Diego Airport is 1 as of December 2025.
How old do you have to be to fly from Great Falls Airport to San Diego Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Great Falls to San Diego?
Based on momondo bookings for flights between Great Falls and San Diego, the leading airline is Delta, making up 100% of the total bookings.

Best airlines flying from Great Falls to San Diego

Compare and see reviews for airlines that fly from Great Falls to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $224	Free Cancellation	Rating 7.9 8,013 reviews		Search Delta flights

Coronado

Chula Vista

El Cajon

Julian

Poway

National City

Imperial Beach

Borrego Springs

San Ysidro

La Mesa

Lemon Grove

Alpine

Santee

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To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Great Falls.

Can I find flights from Great Falls to San Diego with flexible booking policies on momondo?

Flights from Great Falls to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Great Falls to San Diego?

Once all potential Great Falls to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Great Falls to San Diego right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Great Falls to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.