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Cheap flights from Great Falls to San Diego from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to San Diego departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Great Falls to San Diego

Cheap round-trip flights

United Airlines Logo
2:29 pm - 8:42 pmGTF-SAN
7h 13m1 stop
United Airlines Logo
1:00 pm - 9:53 pmSAN-GTF
7h 53m1 stop
$302United Airlines
Find Deal
Tue, Feb 3 - Tue, Feb 10
Delta Logo
1:10 pm - 10:44 pmGTF-SAN
10h 34m2 stops
Delta Logo
6:15 am - 12:32 pmSAN-GTF
5h 17m1 stop
$308Delta
Find Deal
Tue, Feb 3 - Tue, Feb 10
Delta Logo
1:10 pm - 10:44 pmGTF-SAN
10h 34m2 stops
Delta Logo
6:15 am - 5:44 pmSAN-GTF
10h 29m2 stops
$313Delta
Find Deal
Tue, Feb 3 - Tue, Feb 10
Delta Logo
6:10 pm - 10:53 pmGTF-SAN
5h 43m1 stop
Delta Logo
10:10 am - 5:44 pmSAN-GTF
6h 34m1 stop
$320Delta
Find Deal
Sat, Dec 13 - Mon, Jan 5
Delta Logo
6:10 pm - 10:53 pmGTF-SAN
5h 43m1 stop
Delta Logo
6:15 am - 5:44 pmSAN-GTF
10h 29m2 stops
$326Delta
Find Deal
Sat, Dec 13 - Mon, Jan 5
Delta Logo
6:10 pm - 12:03 amGTF-SAN
6h 53m1 stop
Delta Logo
10:00 am - 5:39 pmSAN-GTF
6h 39m1 stop
$330Delta
Find Deal
Fri, Dec 12 - Fri, Jan 2
Alaska Airlines Logo
7:35 pm - 9:49 amGTF-SAN
15h 14m2 stops
Alaska Airlines Logo
10:07 pm - 6:41 pmSAN-GTF
19h 34m2 stops
$435Alaska Airlines
Find Deal
Sat, Dec 13 - Mon, Jan 5
United Airlines Logo
2:31 pm - 8:25 pmGTF-SAN
6h 54m1 stop
United Airlines Logo
6:53 am - 1:26 pmSAN-GTF
5h 33m1 stop
$453United Airlines
Find Deal
Sat, Oct 4 - Sun, Oct 5
Alaska Airlines Logo
7:35 pm - 2:00 pmGTF-SAN
19h 25m2 stops
Alaska Airlines Logo
9:15 pm - 6:41 pmSAN-GTF
20h 26m2 stops
$465Alaska Airlines
Find Deal
Fri, Dec 12 - Fri, Jan 2
Alaska Airlines Logo
6:50 pm - 9:19 pmGTF-SAN
27h 29m2 stops
Alaska Airlines Logo
8:08 pm - 6:10 pmSAN-GTF
21h 02m2 stops
$474Alaska Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11

Alaska Airlines flights from Great Falls to San Diego

Our best Alaska Airlines deals on Great Falls to San Diego flight tickets
Alaska Airlines
Dec 13
GTF7:35 pmGreat Falls
15h 14m
2 stops
SAN9:49 amSan Diego
Jan 5
SAN10:07 pmSan Diego
19h 34m
2 stops
GTF6:41 pmGreat Falls
$435
Find similar
Alaska Airlines
Dec 12
GTF7:35 pmGreat Falls
19h 25m
2 stops
SAN2:00 pmSan Diego
Jan 2
SAN9:15 pmSan Diego
20h 26m
2 stops
GTF6:41 pmGreat Falls
$465
Find similar
Alaska Airlines
Nov 7
GTF6:50 pmGreat Falls
27h 29m
2 stops
SAN9:19 pmSan Diego
Nov 11
SAN8:08 pmSan Diego
21h 02m
2 stops
GTF6:10 pmGreat Falls
$474
Find similar

Delta flights from Great Falls to San Diego

Our best Delta deals on Great Falls to San Diego flight tickets
Delta
Feb 3
GTF1:10 pmGreat Falls
10h 34m
2 stops
SAN10:44 pmSan Diego
Feb 10
SAN6:15 amSan Diego
5h 17m
1 stop
GTF12:32 pmGreat Falls
$308
Find similar
Delta
Feb 3
GTF1:10 pmGreat Falls
10h 34m
2 stops
SAN10:44 pmSan Diego
Feb 10
SAN6:15 amSan Diego
10h 29m
2 stops
GTF5:44 pmGreat Falls
$313
Find similar
Delta
Dec 13
GTF6:10 pmGreat Falls
5h 43m
1 stop
SAN10:53 pmSan Diego
Jan 5
SAN10:10 amSan Diego
6h 34m
1 stop
GTF5:44 pmGreat Falls
$320
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
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

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 2/3

2:29 pm-8:42 pm

1 stop7h 13m

San Diego

Tue 2/10

1:00 pm-9:53 pm

1 stop7h 53m

$302

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 2/3

1:10 pm-10:44 pm

2 stops10h 34m

San Diego

Tue 2/10

6:15 am-12:32 pm

1 stop5h 17m

$308

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Tue 2/3

1:10 pm-10:44 pm

2 stops10h 34m

San Diego

Tue 2/10

6:15 am-5:44 pm

2 stops10h 29m

$313

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 12/13

6:10 pm-10:53 pm

1 stop5h 43m

San Diego

Mon 1/5

10:10 am-5:44 pm

1 stop6h 34m

$320

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 12/13

6:10 pm-10:53 pm

1 stop5h 43m

San Diego

Mon 1/5

6:15 am-5:44 pm

2 stops10h 29m

$326

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 12/12

6:10 pm-12:03 am

1 stop6h 53m

San Diego

Fri 1/2

10:00 am-5:39 pm

1 stop6h 39m

$330

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 12/13

7:35 pm-9:49 am

2 stops15h 14m

San Diego

Mon 1/5

10:07 pm-6:41 pm

2 stops19h 34m

$435

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 10/4

2:31 pm-8:25 pm

1 stop6h 54m

San Diego

Sun 10/5

6:53 am-1:26 pm

1 stop5h 33m

$453

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 12/12

7:35 pm-2:00 pm

2 stops19h 25m

San Diego

Fri 1/2

9:15 pm-6:41 pm

2 stops20h 26m

$465

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 11/7

6:50 pm-9:19 pm

2 stops27h 29m

San Diego

Tue 11/11

8:08 pm-6:10 pm

2 stops21h 02m

$474

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to San Diego from

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

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of January, then departing from Great Falls during the month October is also very affordable. Most momondo users find prices during this month for around $262.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Great Falls to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $406. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $538. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $417. Flights in the morning are often more expensive with an average ticket price of $476.

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

Direct flights

None
There are no direct flights from Great Falls to San Diego. There are no popular flight routes from Great Falls to San Diego.
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  • 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 5h 33m.

  • 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?

  • 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?

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
DeltaPriceFrom $244Free CancellationRating
7.9
7,961 reviews
Search Delta flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
La Mesa
National City
Poway
Imperial Beach
San Ysidro
Borrego Springs
Lemon Grove
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to San Diego?

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.

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