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$278+ Cheap flights from Duluth to San Diego (DLH - 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Duluth to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Duluth (DLH) 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 11, 2025.

Round-trip from

$278
(Delta)

Popular in

May

Cheapest in

January

Average price

$498
From Duluth Intl to San Diego
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Duluth to San Diego

Cheapest flights from Duluth to San Diego
Explore the most affordable flight options available from Duluth to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 11/198:14 amDLH - SAN
1 stop6h 52mDelta
Mon 11/244:36 pmSAN - DLH
1 stop5h 14mDelta
Deal found 9/11$278
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.
Tue 10/79:45 amDLH - SAN
1 stop8h 05mUnited Airlines
Sat 10/117:28 pmSAN - DLH
2 stops13h 17mUnited Airlines
Deal found 9/10$284
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 10/611:20 amDLH - SAN
1 stop9h 10mUnited Airlines
Sat 10/118:08 pmSAN - DLH
2 stops12h 37mUnited Airlines
Deal found 9/10$309
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 11/103:06 pmDLH - SAN
1 stop9h 14mUnited Airlines
Sat 11/1511:02 amSAN - DLH
2 stops8h 57mUnited Airlines
Deal found 9/10$333
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.
Tue 10/77:50 amDLH - SAN
1 stop7h 05mDelta
Sat 10/116:25 amSAN - DLH
1 stop7h 05mDelta
Deal found 9/10$343
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.
Sat 10/259:45 amDLH - SAN
1 stop8h 05mUnited Airlines
Sat 11/110:51 amSAN - DLH
1 stop9h 08mUnited Airlines
Deal found 9/10$368
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.
Mon 11/108:14 amDLH - SAN
2 stops12h 15mDelta
Sat 11/159:43 amSAN - DLH
2 stops7h 47mDelta
Deal found 9/10$398

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duluth 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 September 11, 2025.
Use the filters below to find and compare flights from Duluth to San Diego that are best for you.

Fly from

Duluth

Fly to

San Diego

Route

Depart

Return

Price

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Wed 11/19

8:14 am-1:06 pm

1 stop6h 52m

San Diego

Mon 11/24

4:36 pm-11:50 pm

1 stop5h 14m

$278

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Tue 10/7

3:07 pm-11:41 pm

2 stops10h 34m

San Diego

Sat 10/11

8:08 pm-10:45 am

2 stops12h 37m

$289

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 10/6

11:20 am-6:30 pm

1 stop9h 10m

San Diego

Sat 10/11

8:08 pm-10:45 am

2 stops12h 37m

$309

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 11/10

3:06 pm-10:20 pm

1 stop9h 14m

San Diego

Sat 11/15

10:51 am-9:59 pm

1 stop9h 08m

$328

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Tue 10/7

7:50 am-12:55 pm

1 stop7h 05m

San Diego

Sat 10/11

6:25 am-3:30 pm

1 stop7h 05m

$343

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Sat 10/25

9:45 am-3:50 pm

1 stop8h 05m

San Diego

Sat 11/1

10:51 am-9:59 pm

1 stop9h 08m

$368

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 11/10

8:14 am-6:29 pm

2 stops12h 15m

San Diego

Sat 11/15

9:43 am-7:30 pm

2 stops7h 47m

$398

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Sun 10/26

5:18 am-10:47 am

1 stop7h 29m

San Diego

Sun 11/2

4:35 pm-11:42 pm

1 stop5h 07m

$412

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 9/22

4:20 pm-8:47 pm

1 stop6h 27m

$503

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 9/22

11:20 am-6:20 pm

1 stop9h 00m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Duluth to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Duluth 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 Duluth to San Diego

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

Currently, August is the cheapest month in which you can book a flight from Duluth to San Diego (average of $286). Flying from Duluth to San Diego in March is currently the most expensive (average of $366). 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.

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 11, 2025.
Read through reviews of airlines operating flights from Duluth to San Diego, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Duluth 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 Duluth to San Diego?

    Delta and United Airlines can get you from Duluth to San Diego in just under 6h 52m. Your travel time can differ by up to 3h 42m. The distance from Duluth to San Diego is about 1634 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Duluth to San Diego round-trip?

    Cheapflights users have booked flights from Duluth to San Diego round-trip from $278. Users have found that Delta is 34% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Duluth 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 Duluth to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Duluth to San Diego (average of $286). Flying from Duluth to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Alternative routes for Duluth to San Diego

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Top airline flying from Duluth to San Diego

Discover the top airline that operate flights from Duluth 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$398FlexibilityNo cancel feeOn-timeN/A

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