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

United Airlines and Alaska Airlines are the most popular carriers operating from San Diego to Great Falls

What airlines fly to Great Falls?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Great Falls from San Diego according to our data. Delta is the first choice among our users, with 85% of people opting to fly with this airline when traveling to Great Falls. Keep in mind that there are 3 different airlines that fly to Great Falls on a routine basis, so you have a few additional options to choose from.

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

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

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

As of December 2025, there are 2 operators available to choose from for flights from San Diego Airport to Great Falls Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Great Falls Airport.

What documentation or ID do you need to fly to Great Falls Airport?

The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$98 Cheap Flights from San Diego to Great Falls in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from San Diego to Great Falls

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:42 pm - 5:19 pm

SAN

GTF

19h 37m1 stop

5:59 pm - 8:58 pm

GTF

SAN

27h 59m1 stop

$290Alaska Airlines

vie., ene. 23 - dom., ene. 25

6:15 am - 12:33 pm

SAN

GTF

5h 18m1 stop

1:12 pm - 10:42 pm

GTF

SAN

10h 30m2 stops

$330Delta

lun., ene. 19 - lun., ene. 26

4:06 pm - 5:19 pm

SAN

GTF

24h 13m2 stops

5:59 pm - 11:09 pm

GTF

SAN

6h 10m1 stop

$336Alaska Airlines

vie., ene. 23 - dom., ene. 25

6:15 am - 12:33 pm

SAN

GTF

5h 18m1 stop

1:12 pm - 6:08 pm

GTF

SAN

5h 56m1 stop

$364Delta

lun., ene. 19 - lun., ene. 26

12:31 pm - 5:19 pm

SAN

GTF

27h 48m2 stops

5:59 pm - 9:14 pm

GTF

SAN

28h 15m2 stops

$369Alaska Airlines

vie., ene. 23 - dom., ene. 25

5:06 pm - 5:19 pm

SAN

GTF

23h 13m2 stops

5:59 pm - 9:14 pm

GTF

SAN

28h 15m2 stops

$379Alaska Airlines

vie., ene. 23 - dom., ene. 25

8:15 pm - 5:19 pm

SAN

GTF

20h 04m2 stops

5:59 pm - 2:13 pm

GTF

SAN

21h 14m2 stops

$393Alaska Airlines

lun., ene. 19 - lun., ene. 26

7:30 am - 6:15 pm

SAN

GTF

9h 45m1 stop

6:55 pm - 4:36 pm

GTF

SAN

22h 41m2 stops

$486Alaska Airlines

mié., jun. 17 - dom., jun. 21

11:00 am - 6:15 pm

SAN

GTF

6h 15m1 stop

6:55 pm - 1:02 pm

GTF

SAN

19h 07m1 stop

$506Alaska Airlines

mié., jun. 17 - dom., jun. 21

9:10 am - 6:15 pm

SAN

GTF

8h 05m2 stops

6:55 pm - 8:32 am

GTF

SAN

14h 37m2 stops

$559Alaska Airlines

mié., jun. 17 - dom., jun. 21

Alaska Airlines flights from San Diego to Great Falls

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

Alaska Airlines

Jan 23

SAN8:42 pmSan Diego

19h 37m

1 stop

GTF5:19 pmGreat Falls

Jan 25

GTF5:59 pmGreat Falls

27h 59m

1 stop

SAN8:58 pmSan Diego

$290

Find similar

Alaska Airlines

Jan 23

SAN4:06 pmSan Diego

24h 13m

2 stops

GTF5:19 pmGreat Falls

Jan 25

GTF5:59 pmGreat Falls

6h 10m

1 stop

SAN11:09 pmSan Diego

$336

Find similar

Alaska Airlines

Jan 23

SAN12:31 pmSan Diego

27h 48m

2 stops

GTF5:19 pmGreat Falls

Jan 25

GTF5:59 pmGreat Falls

28h 15m

2 stops

SAN9:14 pmSan Diego

$369

Find similar

Delta flights from San Diego to Great Falls

Our best Delta deals on San Diego to Great Falls flight tickets

Delta

Jan 19

SAN6:15 amSan Diego

5h 18m

1 stop

GTF12:33 pmGreat Falls

Jan 26

GTF1:12 pmGreat Falls

10h 30m

2 stops

SAN10:42 pmSan Diego

$330

Find similar

Delta

Jan 19

SAN6:15 amSan Diego

5h 18m

1 stop

GTF12:33 pmGreat Falls

Jan 26

GTF1:12 pmGreat Falls

5h 56m

1 stop

SAN6:08 pmSan Diego

$364

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

vie. 1/23

8:42 pm-5:19 pm

1 stop19h 37m

Great Falls

dom. 1/25

5:59 pm-8:58 pm

1 stop27h 59m

$290

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

lun. 1/19

6:15 am-12:33 pm

1 stop5h 18m

Great Falls

lun. 1/26

1:12 pm-10:42 pm

2 stops10h 30m

$330

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

vie. 1/23

4:06 pm-5:19 pm

2 stops24h 13m

Great Falls

dom. 1/25

5:59 pm-11:09 pm

1 stop6h 10m

$336

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

lun. 1/19

6:15 am-12:33 pm

1 stop5h 18m

Great Falls

lun. 1/26

1:12 pm-6:08 pm

1 stop5h 56m

$364

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

vie. 1/23

12:31 pm-5:19 pm

2 stops27h 48m

Great Falls

dom. 1/25

5:59 pm-9:14 pm

2 stops28h 15m

$369

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

vie. 1/23

5:06 pm-5:19 pm

2 stops23h 13m

Great Falls

dom. 1/25

5:59 pm-9:14 pm

2 stops28h 15m

$379

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

lun. 1/19

8:15 pm-5:19 pm

2 stops20h 04m

Great Falls

lun. 1/26

5:59 pm-2:13 pm

2 stops21h 14m

$393

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

mié. 6/17

7:30 am-6:15 pm

1 stop9h 45m

Great Falls

dom. 6/21

6:55 pm-4:36 pm

2 stops22h 41m

$486

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

mié. 6/17

11:00 am-6:15 pm

1 stop6h 15m

Great Falls

dom. 6/21

6:55 pm-1:02 pm

1 stop19h 07m

$506

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

mié. 6/17

9:10 am-6:15 pm

2 stops8h 05m

Great Falls

dom. 6/21

6:55 pm-8:32 am

2 stops14h 37m

$559

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 Great Falls?

The month of September is another great option to travel to Great Falls, with average flight prices from San Diego averaging around $313.

What is the cheapest day to depart on your flight to Great Falls?

The cheapest day to depart on your flight to Great Falls is on a Wednesday when prices can be found for as low as $488. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $587.

What is the cheapest time of day to depart on your flight to Great Falls?

According to our data, the cheapest time of day to fly to Great Falls is in the morning. momondo users have found flights departing from San Diego to Great Falls in the morning for as low as $535. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $556 on average. Flights to Great Falls from San Diego in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from San Diego to Great Falls

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

Estimated round-trip price

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

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

Fastest flight time	5h 08m
Direct flights	None

The fastest flight from San Diego to Great Falls takes 5h 08m

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

Search flight deals

How far is San Diego to Great Falls by plane?
There are 1065.8 mi between San Diego and Great Falls. A reasonable flight in good conditions will take 5h 08m.
When did momondo last update prices for flights from San Diego Airport to Great Falls Airport?
Prices for flights from San Diego Airport to Great Falls Airport are updated daily.
How many operators does momondo search for flights from San Diego Airport to Great Falls Airport?
As of December 2025, there are 2 operators available to choose from for flights from San Diego Airport to Great Falls Airport.
How old do you have to be to fly from San Diego Airport to Great Falls Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Great Falls Airport.
What documentation or ID do you need to fly to Great Falls Airport?
The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Diego to Great Falls?
momondo data reveals that the most frequently booked airline on the route from San Diego to Great Falls is Delta, representing 74% of all bookings. The subsequent popular airline is United Airlines at 26%.

Best airlines flying from San Diego to Great Falls

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 9,106 reviews		Search United Airlines flights
Delta	PriceFrom $278	Free Cancellation	Rating 7.9 8,014 reviews		Search Delta flights

Shelby

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Diego to Great Falls for you.

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

Yes. momondo enables you to select and highlight flights to Great Falls from San Diego with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Great Falls from San Diego.

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

Yes momondo offers price alerts on flights to Great Falls from San Diego. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.