$160+ Cheap flights from Great Falls to San Diego (GTF - SAN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — SAN
Oct 10 — Oct 171
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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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 September 10, 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 September 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 12/54:55 pm -
1 stop17h 57m
Wed 12/911:52 am -
1 stop27h 21m
Deal found 9/6![Alaska Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 9/6. 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 12/51:17 pm -
2 stops10h 35m
Thu 12/107:20 am -
2 stops9h 19m
Deal found 9/6![Delta logo]()
$323
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:59 pm -
1 stop26h 48m
Mon 11/96:35 pm -
2 stops20h 44m
Deal found 9/10![Alaska Airlines logo]()
$341
This Alaska Airlines deal was found by Cheapflights users on 9/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:59 pm -
1 stop23h 51m
Sat 11/149:15 am -
1 stop6h 04m
Deal found 9/8![Alaska Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 9/7. 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 -
2 stops10h 33m
Sat 11/147:20 am -
2 stops9h 19m
Deal found 9/7![Delta logo]()
$369
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:15 pm -
1 stop7h 11m
Tue 11/176:22 pm -
1 stop20h 57m
Deal found 9/9![Alaska Airlines logo]()
$378
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 September 10, 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 September 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 11/64:59 pm -
1 stop28h 07m
Sat 11/149:15 am -
1 stop6h 04m
Deal found 9/10![Alaska Airlines logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 12/54:55 pm -
1 stop17h 57m
Wed 12/911:52 am -
1 stop27h 21m
Deal found 9/6![Alaska Airlines logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/44:59 pm -
1 stop6h 36m
Mon 11/912:20 pm -
2 stops26h 59m
Deal found 9/10![Alaska Airlines logo]()
$341
Last-minute flights from Great Falls to San DiegoDiscover last-minute flight deals from Great Falls to San Diego. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to San Diego. Data last updated September 10, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:19 pm -
2 stops20h 01m
Sun 9/276:35 pm -
1 stop21h 04m
Deal found 9/7![Alaska Airlines logo]()
$702
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:37 pm -
1 stop7h 02m
Sun 9/277:00 am -
1 stop5h 41m
Deal found 9/10![United Airlines logo]()
$714
This Delta deal was found by Cheapflights users on 9/10. 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.
Thu 9/246:21 pm -
1 stop6h 31m
Sun 9/273:00 pm -
2 stops6h 37m
Deal found 9/10![Delta logo]()
$720
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:15 pm -
1 stop7h 11m
Tue 11/176:22 pm -
1 stop20h 57m
Deal found 9/9![Alaska Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 9/8. 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.
Tue 10/136:27 pm -
1 stop6h 28m
Thu 10/159:42 am -
1 stop7h 05m
Deal found 9/8![Delta logo]()
$494
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:15 pm -
2 stops16h 26m
Thu 10/157:50 am -
2 stops7h 45m
Deal found 9/8![Alaska Airlines logo]()
$602
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 September 10, 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 September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:39 am -
1 stop24h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$160
This Trip.com deal was found by Cheapflights users on 9/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:15 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Alaska Airlines logo]()
$204
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:15 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$206
This Delta deal was found by Cheapflights users on 9/6. 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 10/215:40 am -
2 stops8h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 9/8. 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.
Wed 11/255:30 am -
2 stops8h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Delta logo]()
$243
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:15 pm -
2 stops17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$250
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:37 pm -
1 stop7h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:15 pm -
2 stops6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:37 pm -
1 stop7h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$357
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $302 (Alaska Airlines) |
One-way from | $160 (Kiwi.com) |
Popular in | November |
Cheapest in | January |
Average price | $792 |
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 7,457,451 searches. Data last updated September 10, 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
Quickest round-trip
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 10/21
5:15 pm-9:58 pm
1 stop5h 43m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$204
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Fri 12/11
11:39 am-5:27 pm
2 stops30h 48m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$208
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 10/21
5:40 am-12:58 pm
2 stops8h 18m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$217
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 11/25
5:30 am-12:48 pm
2 stops8h 18m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$243
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Fri 11/6
4:59 pm-8:06 pm
1 stop28h 07m
San Diego
Sat 11/14
9:15 am-4:19 pm
1 stop6h 04m
$302
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Sat 12/5
4:55 pm-9:52 am
1 stop17h 57m
San Diego
Wed 12/9
11:52 am-4:13 pm
1 stop27h 21m
$302
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 11/4
4:59 pm-10:35 pm
1 stop6h 36m
San Diego
Mon 11/9
12:20 pm-4:19 pm
2 stops26h 59m
$341
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 9/16
5:19 pm-12:20 pm
2 stops20h 01m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$383
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Tue 9/15
5:19 pm-5:10 pm
2 stops24h 51m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$403
Great FallsSan Diego
GTF Great Falls - SAN San Diego
GTFSAN
Great Falls
Wed 10/21
5:15 pm-1:16 pm
3 stops45h 01m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$455
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 September.
| 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 September 10, 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
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
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
National City
Chula Vista
Coronado
Poway
San Ysidro
La Mesa
Santee
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 September 10, 2026.
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Browse through other flights departing from Great Falls. Flights are based on user searches made on Cheapflights and were last updated on September 10, 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$194 | Average$477 | FlexibilityNo cancel fee | On-timeN/A |