$208+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Aug 29 — Sep 51
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
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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
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Best
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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 July 30, 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 July 30, 2026.
This Expedia deal was found by Cheapflights users on 7/28. 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.
Sat 11/74:57 pm
GTF
- SAN
1 stop6h 34m
Alaska Airlines
Sat 11/149:15 am
SAN
- GTF
1 stop6h 02m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 7/28. 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 11/71:18 pm
GTF
- SAN
2 stops10h 33m
Delta
Sat 11/147:10 am
SAN
- GTF
2 stops9h 31m
Delta
Deal found 7/28![Delta logo]()
$323
This Expedia deal was found by Cheapflights users on 7/29. 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.
Sat 8/295:18 pm
GTF
- SAN
1 stop18h 21m
Alaska Airlines
Sat 9/196:15 am
SAN
- GTF
1 stop9h 24m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 7/29. 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 11/61:18 pm
GTF
- SAN
2 stops10h 33m
Delta
Sat 11/147:10 am
SAN
- GTF
2 stops9h 31m
Delta
Deal found 7/29![Delta logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 11/64:57 pm
GTF
- SAN
1 stop7h 34m
Alaska Airlines
Sat 11/146:15 am
SAN
- GTF
1 stop9h 02m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$342
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 9/145:19 pm
GTF
- SAN
1 stop21h 02m
Alaska Airlines
Wed 10/2812:10 pm
SAN
- GTF
1 stop27h 25m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$352
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 July 30, 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 July 30, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 9/145:19 pm
GTF
- SAN
1 stop21h 02m
Alaska Airlines
Wed 10/2812:10 pm
SAN
- GTF
1 stop27h 25m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 7/29. 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 8/291:08 pm
GTF
- SAN
2 stops8h 40m
Delta
Sat 9/196:15 am
SAN
- GTF
2 stops10h 26m
Delta
Deal found 7/29![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 10/245:15 pm
GTF
- SAN
1 stop5h 43m
Alaska Airlines
Tue 10/272:59 pm
SAN
- GTF
1 stop24h 36m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 7/28. 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 9/301:15 pm
GTF
- SAN
2 stops10h 18m
Delta
Sun 10/46:15 am
SAN
- GTF
1 stop5h 20m
Delta
Deal found 7/28![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 stop7h 26m
Alaska Airlines
Wed 9/29:31 am
SAN
- GTF
1 stop6h 07m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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.
Fri 9/115:19 pm
GTF
- SAN
1 stop21h 02m
Alaska Airlines
Sun 9/137:15 am
SAN
- GTF
1 stop8h 24m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$433
Last-minute flights from Great Falls to San DiegoDiscover last-minute flight deals from Great Falls to San Diego. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to San Diego. Data last updated July 30, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 7/25. 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 8/185:09 pm
GTF
- SAN
2 stops15h 35m
Alaska Airlines
Fri 8/288:33 pm
SAN
- GTF
1 stop19h 05m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 stop7h 26m
Alaska Airlines
Wed 9/29:31 am
SAN
- GTF
1 stop6h 07m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$383
This Expedia deal was found by Cheapflights users on 7/29. 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.
Sat 8/295:18 pm
GTF
- SAN
1 stop18h 21m
Alaska Airlines
Sat 9/196:15 am
SAN
- GTF
1 stop9h 24m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 7/29. 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 8/291:08 pm
GTF
- SAN
2 stops8h 40m
Delta
Sat 9/196:15 am
SAN
- GTF
2 stops10h 26m
Delta
Deal found 7/29![Delta logo]()
$409
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 July 30, 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 July 30, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 10/25:19 pm
GTF
- SAN
2 stops26h 10m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$208
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 9/65:25 pm
GTF
- SAN
2 stops18h 51m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$214
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:25 pm
GTF
- SAN
1 stop7h 09m
United Airlines
Deal found 7/25![United Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 7/25. 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 10/21:15 pm
GTF
- SAN
1 stop5h 51m
Delta
Deal found 7/25![Delta logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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
2 stops15h 07m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 7/28. 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 8/265:40 am
GTF
- SAN
1 stop4h 01m
Delta
Deal found 7/28![Delta logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/310:19 am
GTF
- SAN
1 stop28h 49m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/265:18 pm
GTF
- SAN
3 stops27h 56m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 9/65:25 pm
GTF
- SAN
3 stops45h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$560
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 July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $292 (Expedia) |
One-way from | $208 (Alaska Airlines) |
Popular in | February |
Cheapest in | October |
Average price | $1,024 |
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 July 30, 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
Mon 9/14
5:19 pm-1:21 pm
1 stop21h 02m
San Diego
Wed 10/28
12:10 pm-4:35 pm
1 stop27h 25m
$352
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Sat 10/24
5:15 pm-9:58 pm
1 stop5h 43m
San Diego
Tue 10/27
2:59 pm-4:35 pm
1 stop24h 36m
$378
Quickest round-trip
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Wed 8/26
5:18 pm-11:44 pm
1 stop7h 26m
San Diego
Wed 9/2
9:31 am-4:38 pm
1 stop6h 07m
$383
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Sat 8/29
1:08 pm-8:48 pm
2 stops8h 40m
San Diego
Sat 9/19
6:15 am-5:41 pm
2 stops10h 26m
$409
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Wed 9/30
1:15 pm-10:33 pm
2 stops10h 18m
San Diego
Sun 10/4
6:15 am-12:35 pm
1 stop5h 20m
$419
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Fri 9/11
5:19 pm-1:21 pm
1 stop21h 02m
San Diego
Sun 9/13
7:15 am-4:39 pm
1 stop8h 24m
$433
Cheapest one-way
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Fri 10/2
5:19 pm-6:29 pm
2 stops26h 10m
$208
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Sun 9/6
2:25 pm-8:34 pm
1 stop7h 09m
$227
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Fri 10/2
1:15 pm-6:06 pm
1 stop5h 51m
$232
Great FallsSan Diego
GTF - SAN
GTFSAN
Great Falls
Wed 8/26
5:18 pm-7:25 am
2 stops15h 07m
$278
Showing 1-10 of 14 resultsSorted 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 July.
| 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.
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 July 30, 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.
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
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
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Coronado
Santee
San Ysidro
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 July 30, 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$194 | Average$448 | FlexibilityNo cancel fee | On-timeN/A |