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Duluth

$337+ Cheap flights from San Diego to Duluth (SAN - DLH)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DLH
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from San Diego to Duluth

Cheapest flights from San Diego to Duluth
Explore the most affordable flight options available from San Diego to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This United Airlines deal was found by Cheapflights users on 12/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:30 pmSAN - DLH
1 stop22h 25mUnited Airlines
Sat 1/37:50 amDLH - SAN
1 stop9h 43mUnited Airlines
Deal found 12/8$928
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Tue 12/232:11 pmSAN - DLH
1 stop6h 44mUnited Airlines
Fri 12/267:50 amDLH - SAN
2 stops16h 42mUnited Airlines
Deal found 12/9$941
This United Airlines deal was found by Cheapflights users on 12/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:11 pmSAN - DLH
1 stop6h 44mUnited Airlines
Tue 12/303:03 pmDLH - SAN
1 stop26h 30mUnited Airlines
Deal found 12/8$972
This Delta deal was found by Cheapflights users on 12/8. 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 12/236:15 amSAN - DLH
1 stop7h 15mDelta
Fri 12/265:00 amDLH - SAN
1 stop8h 30mDelta
Deal found 12/8$987
This Delta deal was found by Cheapflights users on 12/9. 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 12/241:13 pmSAN - DLH
1 stop7h 39mDelta
Sun 12/285:00 amDLH - SAN
1 stop8h 30mDelta
Deal found 12/9$1,103
This United Airlines deal was found by Cheapflights users on 12/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:11 pmSAN - DLH
1 stop6h 44mUnited Airlines
Sat 12/277:50 amDLH - SAN
1 stop27h 54mUnited Airlines
Deal found 12/7$1,140

Find flight deals from San Diego to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Duluth (DLH). 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 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$491
(United Airlines)

Popular in

August

Cheapest in

March

Average price

$445
Provider with most accurate pricing for San Diego-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Duluth Intl flights.
Search Deals
From San Diego to Duluth Intl
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($23 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 San Diego to Duluth 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 10, 2025.
Use the filters below to find and compare flights from San Diego to Duluth that are best for you.

Fly from

San Diego

Fly to

Duluth

Route

Depart

Return

Price

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Wed 1/21

10:52 am-9:59 pm

1 stop9h 07m

Duluth Intl

Sat 1/24

3:05 pm-8:37 am

2 stops19h 32m

$491

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Tue 12/30

10:30 pm-10:55 pm

1 stop22h 25m

Duluth Intl

Sat 1/3

7:50 am-10:30 am

2 stops28h 40m

$940

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Tue 12/23

2:11 pm-10:55 pm

1 stop6h 44m

Duluth Intl

Fri 12/26

7:50 am-10:32 pm

2 stops16h 42m

$941

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Sat 5/16

6:20 am-3:19 pm

1 stop6h 59m

$337

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Tue 5/19

6:20 am-3:19 pm

1 stop6h 59m

$337

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Fri 5/15

4:30 pm-11:38 pm

1 stop5h 08m

$337

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Sun 5/17

6:20 am-3:19 pm

1 stop6h 59m

$337

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Thu 5/21

4:30 pm-11:38 pm

1 stop5h 08m

$397

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Sat 12/20

2:11 pm-10:55 pm

1 stop6h 44m

$523

San DiegoDuluth

SAN - DLH

SANDLH

San Diego

Sun 12/21

9:00 am-10:55 pm

2 stops11h 55m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from San Diego to Duluth

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

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

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

Currently, June is the cheapest month in which you can book a flight from San Diego to Duluth (average of $211). Flying from San Diego to Duluth in January is currently the most expensive (average of $534). 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 SAN to DLH?

Find hourly flight availability from San Diego to Duluth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

It’s typically best to fly out from San Diego to Duluth in the afternoon. Doing so could potentially save you 47% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Duluth

Get insights into the airlines that provide service to Duluth. 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 Duluth. Reviews last updated December 10, 2025.
See what other customers who have flown with Delta from San Diego to Duluth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

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

    There are many flights that can get you from San Diego to Duluth in 9h 07m. Fly via United Airlines to get the fastest option. The distance between San Diego and Duluth is about 1634 mi.

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

    Flying on Delta is currently your cheapest option to Duluth, with prices starting at $278. Delta is priced at 37% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from San Diego to Duluth (average of $211). Flying from San Diego to Duluth in January is currently the most expensive (average of $534). 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 Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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Top airline flying from San Diego to Duluth

Discover the top airline that operate flights from San Diego to Duluth. 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 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$440FlexibilityNo cancel feeOn-timeN/A

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