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$309+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
FNT — SAN
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Flint Bishop to San Diego are usually found in December or July, booked 88 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

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 December 15, 2025.

This American Airlines deal was found by Cheapflights users on 12/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:49 amFNT - SAN
2 stops9h 15mAmerican Airlines
Wed 12/2410:01 pmSAN - FNT
2 stops13h 03mAmerican Airlines
Deal found 12/13$494
This American Airlines deal was found by Cheapflights users on 12/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:49 amFNT - SAN
2 stops12h 35mAmerican Airlines
Wed 12/314:25 pmSAN - FNT
2 stops14h 59mAmerican Airlines
Deal found 12/13$572
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:00 amFNT - SAN
1 stop7h 30mUnited Airlines
Wed 12/249:45 pmSAN - FNT
2 stops15h 06mUnited Airlines
Deal found 12/13$579
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:00 amFNT - SAN
1 stop7h 30mUnited Airlines
Mon 12/2910:56 amSAN - FNT
1 stop8h 34mUnited Airlines
Deal found 12/13$595
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:26 pmFNT - SAN
1 stop9h 25mUnited Airlines
Mon 1/56:30 amSAN - FNT
2 stops13h 00mUnited Airlines
Deal found 12/13$605
This United Airlines deal was found by Cheapflights users on 12/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:00 amFNT - SAN
1 stop7h 30mUnited Airlines
Mon 12/2910:56 amSAN - FNT
1 stop8h 34mUnited Airlines
Deal found 12/13$609

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$269
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$323
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. 5% potential increase in price ($21 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 December 2025
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 December 15, 2025.
Use the filters below to find and compare flights from Flint to San Diego that are best for you.

Fly from

Flint

Fly to

San Diego

Route

Depart

Return

Price

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sun 1/18

7:00 am-11:48 am

1 stop7h 48m

San Diego

Sat 1/31

7:00 am-5:09 pm

1 stop7h 09m

$309

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Fri 1/9

5:44 pm-10:33 pm

1 stop7h 49m

San Diego

Sun 1/18

7:00 am-10:44 pm

2 stops12h 44m

$314

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Thu 1/8

1:40 pm-9:58 pm

2 stops11h 18m

San Diego

Thu 1/15

10:09 am-11:26 pm

2 stops10h 17m

$319

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Tue 2/3

1:41 pm-8:41 pm

2 stops10h 00m

San Diego

Mon 2/9

10:45 pm-1:11 pm

2 stops11h 26m

$319

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sun 2/1

6:30 am-3:57 pm

2 stops12h 27m

San Diego

Wed 2/11

1:58 pm-11:26 pm

1 stop6h 28m

$339

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sat 1/24

7:26 pm-9:04 am

2 stops16h 38m

San Diego

Wed 1/28

6:20 am-6:44 pm

1 stop9h 24m

$349

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sun 1/18

5:44 pm-10:33 pm

1 stop7h 49m

San Diego

Sun 3/1

10:30 pm-5:02 pm

2 stops15h 32m

$359

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Mon 12/29

1:24 pm-12:11 pm

1 stop25h 47m

$407

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Tue 12/30

9:33 pm-12:11 pm

3 stops41h 38m

$414

FlintSan Diego

FNT - SAN

FNTSAN

Flint Bishop

Sun 3/15

7:15 am-10:40 pm

1 stop18h 25m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 14 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Flint-San Diego flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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?

Use this chart to determine the optimal time to book a round-trip flight from Flint to San Diego. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Flint to San Diego, you should look to book at least 88 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, August is the cheapest month in which you can book a flight from Flint to San Diego (average of $104). Flying from Flint to San Diego in December is currently the most expensive (average of $174). 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.

What is the cheapest time of day to fly from FNT to SAN?

Find hourly flight availability from Flint to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Flint to San Diego at noon. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the evening.

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 December 15, 2025.
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
9,092 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

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
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

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
7.2
Good
11,052 reviews
United Airlines
7.4
Good
9,092 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

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 and American Airlines fly from Flint to San Diego in about 7h 48m. The time it takes to get you to your destination can typically vary by up to 3h 30m. There are 1940 mi between Flint and San Diego. This flight may include one or multiple stops.

  • 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 25% 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, August is the cheapest month in which you can book a flight from Flint to San Diego (average of $104). Flying from Flint to San Diego in December is currently the most expensive (average of $174). 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
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$376FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$402FlexibilityNo cancel feeOn-time69%

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