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Cheap flights from Great Falls to San Diego from $169

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 3/28. 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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0 bags

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Find the cheapest flights from Great Falls to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:18 pm - 2:12 pm
GTF
-
SAN
21h 54m2 stops
Multiple Airlines Logo
2:56 pm - 4:28 pm
SAN
-
GTF
24h 32m1 stop
$273Multiple Airlines
Fri, Jan 16 - Thu, Jan 22
Delta Logo
1:15 pm - 4:37 pm
GTF
-
SAN
4h 22m1 stop
Delta Logo
9:55 am - 5:30 pm
SAN
-
GTF
6h 35m1 stop
$308Delta
Sat, Jan 17 - Fri, Jan 23
Delta Logo
1:15 pm - 4:37 pm
GTF
-
SAN
4h 22m1 stop
Delta Logo
7:00 am - 5:30 pm
SAN
-
GTF
9h 30m2 stops
$314Delta
Sat, Jan 17 - Fri, Jan 23
Delta Logo
1:15 pm - 4:36 pm
GTF
-
SAN
4h 21m1 stop
Delta Logo
9:55 am - 5:30 pm
SAN
-
GTF
6h 35m1 stop
$318Delta
Sun, Jan 18 - Thu, Jan 22
Delta Logo
1:15 pm - 10:47 pm
GTF
-
SAN
10h 32m2 stops
Delta Logo
6:15 am - 12:32 pm
SAN
-
GTF
5h 17m1 stop
$324Delta
Sun, Jan 18 - Thu, Jan 22
Delta Logo
1:15 pm - 10:47 pm
GTF
-
SAN
10h 32m2 stops
Delta Logo
7:00 am - 5:30 pm
SAN
-
GTF
9h 30m2 stops
$329Delta
Sun, Jan 18 - Thu, Jan 22
Alaska Airlines Logo
5:59 pm - 9:50 am
GTF
-
SAN
16h 51m2 stops
Alaska Airlines Logo
9:13 pm - 5:19 pm
SAN
-
GTF
19h 06m2 stops
$334Alaska Airlines
Sat, Jan 17 - Fri, Jan 23
Alaska Airlines Logo
5:59 pm - 8:58 pm
GTF
-
SAN
27h 59m1 stop
Alaska Airlines Logo
8:42 pm - 5:19 pm
SAN
-
GTF
19h 37m1 stop
$342Alaska Airlines
Fri, Jan 16 - Thu, Jan 22
Alaska Airlines Logo
5:59 pm - 8:33 am
GTF
-
SAN
15h 34m2 stops
Alaska Airlines Logo
8:01 am - 5:19 pm
SAN
-
GTF
8h 18m2 stops
$349Alaska Airlines
Fri, Jan 16 - Thu, Jan 22
Alaska Airlines Logo
5:59 pm - 8:35 am
GTF
-
SAN
15h 36m2 stops
Alaska Airlines Logo
5:06 pm - 5:19 pm
SAN
-
GTF
23h 13m2 stops
$354Alaska Airlines
Sun, Jan 18 - Thu, Jan 22

United Airlines flights from Great Falls to San Diego

Our best United Airlines deals on Great Falls to San Diego flight tickets
United Airlines
Dec 22
GTF2:35 pmGreat Falls
7h 12m
1 stop
SAN8:47 pmSan Diego
Dec 26
SAN6:30 amSan Diego
6h 09m
1 stop
GTF1:39 pmGreat Falls
$562
Find similar
United Airlines
Dec 12
GTF6:15 amGreat Falls
28h 00m
1 stop
SAN9:15 amSan Diego
Jan 2
SAN6:30 amSan Diego
6h 09m
1 stop
GTF1:39 pmGreat Falls
$741
Find similar
United Airlines
Mar 8
GTF6:15 amGreat Falls
14h 33m
2 stops
SAN7:48 pmSan Diego
Mar 12
SAN6:15 amSan Diego
13h 56m
2 stops
GTF9:11 pmGreat Falls
$749
Find similar

Delta flights from Great Falls to San Diego

Our best Delta deals on Great Falls to San Diego flight tickets
Delta
Jan 17
GTF1:15 pmGreat Falls
4h 22m
1 stop
SAN4:37 pmSan Diego
Jan 23
SAN9:55 amSan Diego
6h 35m
1 stop
GTF5:30 pmGreat Falls
$308
Find similar
Delta
Jan 17
GTF1:15 pmGreat Falls
4h 22m
1 stop
SAN4:37 pmSan Diego
Jan 23
SAN7:00 amSan Diego
9h 30m
2 stops
GTF5:30 pmGreat Falls
$314
Find similar
Delta
Jan 18
GTF1:15 pmGreat Falls
4h 21m
1 stop
SAN4:36 pmSan Diego
Jan 22
SAN9:55 amSan Diego
6h 35m
1 stop
GTF5:30 pmGreat Falls
$318
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 December 8, 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

Fri 1/16

5:18 pm-2:12 pm

2 stops21h 54m

San Diego

Thu 1/22

2:56 pm-4:28 pm

1 stop24h 32m

$273

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 1/17

1:15 pm-4:37 pm

1 stop4h 22m

San Diego

Fri 1/23

9:55 am-5:30 pm

1 stop6h 35m

$308

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 1/17

1:15 pm-4:37 pm

1 stop4h 22m

San Diego

Fri 1/23

7:00 am-5:30 pm

2 stops9h 30m

$314

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 1/18

1:15 pm-4:36 pm

1 stop4h 21m

San Diego

Thu 1/22

9:55 am-5:30 pm

1 stop6h 35m

$318

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 1/18

1:15 pm-10:47 pm

2 stops10h 32m

San Diego

Thu 1/22

6:15 am-12:32 pm

1 stop5h 17m

$324

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 1/18

1:15 pm-10:47 pm

2 stops10h 32m

San Diego

Thu 1/22

7:00 am-5:30 pm

2 stops9h 30m

$329

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sat 1/17

5:59 pm-9:50 am

2 stops16h 51m

San Diego

Fri 1/23

9:13 pm-5:19 pm

2 stops19h 06m

$334

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 1/16

5:59 pm-8:58 pm

1 stop27h 59m

San Diego

Thu 1/22

8:42 pm-5:19 pm

1 stop19h 37m

$342

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Fri 1/16

5:59 pm-8:33 am

2 stops15h 34m

San Diego

Thu 1/22

8:01 am-5:19 pm

2 stops8h 18m

$349

Great FallsSan Diego

GTF - SAN

GTFSAN

Great Falls

Sun 1/18

5:59 pm-8:35 am

2 stops15h 36m

San Diego

Thu 1/22

5:06 pm-5:19 pm

2 stops23h 13m

$354

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 $302.

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

Fastest flight time

4h 21m

Direct flights

None
The fastest flight from Great Falls to San Diego takes 4h 21m
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 4h 21m.

  • 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 $224Free CancellationRating
7.9
8,013 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
National City
Imperial Beach
Poway
La Mesa
Borrego Springs
San Ysidro
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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