$113+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Jun 12 — Jun 191
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Great Falls to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Great Falls to San DiegoExplore 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 May 13, 2026.
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 May 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Sat 5/306:52 pm
GTF
- SAN
1 stop15h 23m
Alaska Airlines
Tue 6/28:04 pm
SAN
- GTF
1 stop21h 08m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 5/8. 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.
Sat 5/305:40 am
GTF
- SAN
1 stop7h 24m
Delta
Tue 6/29:50 am
SAN
- GTF
1 stop6h 49m
Delta
Deal found 5/8![Delta logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:18 pm
GTF
- SAN
1 stop19h 13m
Multiple Airlines
Sun 8/168:29 pm
SAN
- GTF
1 stop12h 00m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 8/265:18 pm
GTF
- SAN
1 stop6h 26m
Alaska Airlines
Wed 9/29:11 pm
SAN
- GTF
2 stops18h 27m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$441
This Delta deal was found by Cheapflights users on 5/13. 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.
Wed 8/261:08 pm
GTF
- SAN
1 stop5h 58m
Delta
Wed 9/25:00 pm
SAN
- GTF
1 stop4h 44m
Delta
Deal found 5/13![Delta logo]()
$456
Best flights from Great Falls to San DiegoDiscover carefully curated flight deals from Great Falls to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
Discover carefully curated flight deals from Great Falls to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Sat 5/306:52 pm
GTF
- SAN
1 stop15h 23m
Alaska Airlines
Tue 6/28:04 pm
SAN
- GTF
1 stop21h 08m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 5/11. 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 9/115:30 am
GTF
- SAN
1 stop4h 29m
Delta
Sun 9/136:15 am
SAN
- GTF
1 stop5h 08m
Delta
Deal found 5/11![Delta logo]()
$456
This Expedia deal was found by Cheapflights users on 5/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:18 pm
GTF
- SAN
2 stops16h 03m
Alaska Airlines
Fri 8/287:15 am
SAN
- GTF
1 stop8h 23m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$441
This Delta deal was found by Cheapflights users on 5/13. 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.
Wed 8/261:08 pm
GTF
- SAN
1 stop5h 58m
Delta
Wed 9/25:00 pm
SAN
- GTF
1 stop4h 44m
Delta
Deal found 5/13![Delta logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 8/265:18 pm
GTF
- SAN
1 stop6h 26m
Alaska Airlines
Wed 9/29:11 pm
SAN
- GTF
2 stops18h 27m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$441
Last-minute flights from Great Falls to San DiegoDiscover last-minute flight deals from Great Falls to San Diego. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to San Diego. Data last updated May 13, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Sat 5/306:52 pm
GTF
- SAN
1 stop15h 23m
Alaska Airlines
Tue 6/28:04 pm
SAN
- GTF
1 stop21h 08m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 5/8. 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.
Sat 5/305:40 am
GTF
- SAN
1 stop7h 24m
Delta
Tue 6/29:50 am
SAN
- GTF
1 stop6h 49m
Delta
Deal found 5/8![Delta logo]()
$376
One-way flights from Great Falls to San DiegoSearch for one-way flight options from Great Falls to San Diego. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
Search for one-way flight options from Great Falls to San Diego. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:18 am
GTF
- SAN
1 stop23h 30m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$113
This Delta deal was found by Cheapflights users on 5/13. 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.
Mon 8/36:28 pm
GTF
- SAN
1 stop6h 22m
Delta
Deal found 5/13![Delta logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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.
Mon 7/205:09 pm
GTF
- SAN
1 stop7h 02m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:17 pm
GTF
- SAN
1 stop5h 49m
Delta
Deal found 5/10![Delta logo]()
$274
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 7/215:09 pm
GTF
- SAN
2 stops16h 34m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$283
Find 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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (Alaska Airlines) |
One-way from | $113 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $394 |
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 May 13, 2026.
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
Cheapest round-trip
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Sat 5/30
6:52 pm-9:15 am
1 stop15h 23m
San Diego
Tue 6/2
8:04 pm-6:12 pm
1 stop21h 08m
$363
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Tue 8/25
5:18 pm-8:21 am
2 stops16h 03m
San Diego
Fri 8/28
7:15 am-4:38 pm
1 stop8h 23m
$441
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Wed 8/26
5:18 pm-10:44 pm
1 stop6h 26m
San Diego
Wed 9/2
9:11 pm-4:38 pm
2 stops18h 27m
$441
Quickest round-trip
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Fri 9/11
5:30 am-8:59 am
1 stop4h 29m
San Diego
Sun 9/13
6:15 am-12:23 pm
1 stop5h 08m
$456
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Wed 8/26
1:08 pm-6:06 pm
1 stop5h 58m
San Diego
Wed 9/2
5:00 pm-10:44 pm
1 stop4h 44m
$456
Cheapest one-way
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Mon 6/8
10:18 am-8:48 am
1 stop23h 30m
$113
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Mon 8/3
6:28 pm-11:50 pm
1 stop6h 22m
$228
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Mon 7/20
5:09 pm-11:11 pm
1 stop7h 02m
$257
Quickest one-way
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Tue 7/21
1:17 pm-6:06 pm
1 stop5h 49m
$274
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Tue 7/21
5:09 pm-8:43 am
2 stops16h 34m
$283
Sorted by cheapest first
Compare providers for flights from Great Falls to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Great Falls to San Diego in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Great Falls-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Great Falls-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
GTF-SAN
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, October is the cheapest month in which you can book a flight from Great Falls to San Diego (average of $302). Flying from Great Falls to San Diego in December is currently the most expensive (average of $1,037). 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.
How much does it cost to fly round-trip from Great Falls to San Diego?
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 May 13, 2026.
Read reviews from past customers who have flown Delta from Great Falls to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
Poway
La Mesa
Julian
Lemon Grove
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Great Falls and San Diego flights
Browse other Great Falls and San Diego flight options. Last updated on May 13, 2026.
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Top airline flying from Great Falls to San Diego
Discover the top airline 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$194 | Average$419 | FlexibilityNo cancel fee | On-timeN/A |