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$301+ Cheap flights from Flint to San Diego (FNT - 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
FNT — SAN
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
1 adult, Economy
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Cheap flight deals from Flint to San Diego

Cheapest flights from Flint to San Diego
Explore the most affordable flight options available from Flint to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 2, 2026.

This United Airlines deal was found by Cheapflights users on 4/30. 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 9/163:36 pm
FNT
-
SAN
1 stop9h 34m
United Airlines
Wed 9/231:53 pm
SAN
-
FNT
1 stop7h 05m
United Airlines
Deal found 4/30$301
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:36 pm
FNT
-
SAN
2 stops11h 18m
United Airlines
Wed 8/510:49 am
SAN
-
FNT
2 stops9h 14m
United Airlines
Deal found 4/27$311
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:39 pm
FNT
-
SAN
1 stop9h 00m
American Airlines
Fri 6/51:19 pm
SAN
-
FNT
1 stop8h 30m
American Airlines
Deal found 4/29$316
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:25 pm
FNT
-
SAN
1 stop7h 05m
United Airlines
Fri 6/510:30 pm
SAN
-
FNT
2 stops13h 31m
United Airlines
Deal found 4/29$321
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:30 am
FNT
-
SAN
1 stop6h 34m
American Airlines
Sat 5/306:15 am
SAN
-
FNT
1 stop7h 54m
American Airlines
Deal found 4/30$325
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:00 am
FNT
-
SAN
1 stop17h 12m
Multiple Airlines
Thu 6/49:43 am
SAN
-
FNT
1 stop27h 20m
Multiple Airlines
Deal found 4/29$328
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:00 am
FNT
-
SAN
1 stop28h 47m
Multiple Airlines
Sun 6/79:43 am
SAN
-
FNT
1 stop27h 20m
Multiple Airlines
Deal found 4/29$337
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:39 pm
FNT
-
SAN
1 stop9h 00m
American Airlines
Fri 5/296:15 am
SAN
-
FNT
1 stop7h 54m
American Airlines
Deal found 4/29$340
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:00 am
FNT
-
SAN
1 stop14h 41m
Multiple Airlines
Thu 6/49:43 am
SAN
-
FNT
1 stop27h 20m
Multiple Airlines
Deal found 4/29$345
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:39 pm
FNT
-
SAN
1 stop9h 00m
American Airlines
Sun 5/247:28 am
SAN
-
FNT
1 stop6h 41m
American Airlines
Deal found 4/30$349

Find flight deals from Flint to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Flint (FNT) 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 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$301
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$368
Provider with most accurate pricing for Flint Bishop-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Flint Bishop-San Diego flights.
Search Deals
From Flint Bishop to San Diego
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Flint 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 2, 2026.
Use the filters below to find and compare flights from Flint to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Tue 9/22

3:36 pm-10:10 pm

1 stop9h 34m

San Diego

Sat 9/26

9:45 pm-3:01 pm

2 stops14h 16m

$406

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sat 8/29

3:36 pm-10:27 pm

2 stops9h 51m

San Diego

Tue 9/1

7:15 am-11:58 pm

2 stops13h 43m

$411
Quickest round-trip

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Mon 5/11

3:34 pm-10:39 pm

1 stop10h 05m

San Diego

Mon 5/18

10:40 pm-9:11 am

1 stop7h 31m

$445

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Wed 9/23

6:30 am-5:46 pm

2 stops14h 16m

San Diego

Tue 9/29

9:20 pm-3:01 pm

2 stops14h 41m

$486

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Wed 7/1

3:36 pm-11:54 pm

2 stops11h 18m

San Diego

Tue 7/7

9:05 pm-3:01 pm

2 stops14h 56m

$486

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Thu 5/14

3:34 pm-10:39 pm

1 stop10h 05m

San Diego

Tue 5/19

6:26 pm-9:11 am

2 stops11h 45m

$499

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sat 6/20

3:36 pm-11:54 pm

2 stops11h 18m

San Diego

Sun 6/28

10:40 pm-7:06 pm

1 stop17h 26m

$578
Cheapest one-way
Quickest one-way

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Mon 6/8

3:36 pm-10:34 pm

1 stop9h 58m

$384

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Mon 7/13

3:36 pm-10:34 pm

1 stop9h 58m

$384

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Tue 7/14

3:36 pm-10:34 pm

1 stop9h 58m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Flint 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 Flint to San Diego in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Flint-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Flint-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Flint-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Flint-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 Flint-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 Flint to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Flint with our price prediction graph.
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 Flint to San Diego

How far ahead should I book a flight from Flint to San Diego?

To ensure you get the cheapest price possible for a flight from Flint to San Diego, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Flint to San Diego?

Currently, December is the cheapest month in which you can book a flight from Flint to San Diego (average of $323). Flying from Flint to San Diego in June is currently the most expensive (average of $497). 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 Flint 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 2, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Flint 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.
United Airlines
7.4
Good
9,679 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,679 reviews
United Airlines
7.4
Good
9,679 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.1
Good
11,673 reviews
United Airlines
7.4
Good
9,679 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Flint to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Flint to San Diego?

    Airlines like United Airlines fly from Flint to San Diego in about 9h 34m. The time it takes to get you to your destination can typically vary by up to . There are 1940 mi between Flint and San Diego.

  • What are the cheapest airlines flying from Flint to San Diego round-trip?

    American Airlines, at $288, was found to be the cheapest airline from Flint to San Diego. An alternate airline flying to your destination would be United Airlines. American Airlines is currently priced 27% below the average price you’ll pay for this route.

  • Can I find deals for flights from Flint to San Diego that include hotel bookings?

    Yes. In addition to deals on Flint to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Flint to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Flint to San Diego.

  • Can I find deals for business class flights from Flint to San Diego?

    Yes. Cheapflights offers flight deals from Flint to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Flint to San Diego?

    Currently, December is the cheapest month in which you can book a flight from Flint to San Diego (average of $323). Flying from Flint to San Diego in June is currently the most expensive (average of $497). 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.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top 2 airlines flying from Flint to San Diego

Discover the top 2 airlines that operate flights from Flint 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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$411FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$378FlexibilityNo cancel feeOn-time71%

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