How long is the flight from Duluth to San Diego?

United Airlines and Delta can get you from Duluth to San Diego in just under 9h 11m. Your travel time can differ by up to 2h 49m. 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.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Duluth to San Diego as you normally would.

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

Most trusted provider : When it comes to deals on Duluth-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 Duluth-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$334+ Cheap Flights from Duluth to San Diego

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1. Tell us where you want to go

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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 October 10, 2025.

Thu 10/239:45 amDLH - SAN

1 stop8h 05mUnited Airlines

Mon 10/2710:00 pmSAN - DLH

2 stops14h 31mUnited Airlines

Deal found 10/8

$374

Wed 10/158:00 amDLH - SAN

2 stops14h 19mUnited Airlines

Wed 10/226:48 amSAN - DLH

1 stop9h 49mUnited Airlines

Deal found 10/8

$568

Thu 10/237:50 amDLH - SAN

1 stop7h 05mDelta

Mon 10/277:40 amSAN - DLH

1 stop5h 50mDelta

Deal found 10/8

$627

Best flights from Duluth to San Diego
Discover carefully curated flight deals from Duluth to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2025.

Fri 3/1311:26 amDLH - SAN

1 stop9h 11mUnited Airlines

Fri 3/209:55 pmSAN - DLH

2 stops10h 49mUnited Airlines

Deal found 10/8

$334

Sat 2/1412:00 pmDLH - SAN

2 stops12h 00mDelta

Sat 2/2110:30 pmSAN - DLH

2 stops10h 37mDelta

Deal found 10/9

$464

Thu 10/239:45 amDLH - SAN

1 stop8h 05mUnited Airlines

Mon 10/2710:00 pmSAN - DLH

2 stops14h 31mUnited Airlines

Deal found 10/8

$374

Mon 1/123:05 pmDLH - SAN

1 stop20h 35mUnited Airlines

Thu 1/156:55 pmSAN - DLH

2 stops17h 35mUnited Airlines

Deal found 10/7

$608

Last-minute flights from Duluth to San Diego
Discover last-minute flight deals from Duluth to San Diego. Data last updated October 10, 2025 and is based on user searches.

Wed 10/158:00 amDLH - SAN

2 stops14h 19mUnited Airlines

Wed 10/226:48 amSAN - DLH

1 stop9h 49mUnited Airlines

Deal found 10/8

$568

Thu 10/239:45 amDLH - SAN

1 stop8h 05mUnited Airlines

Mon 10/2710:00 pmSAN - DLH

2 stops14h 31mUnited Airlines

Deal found 10/8

$374

Thu 10/237:50 amDLH - SAN

1 stop7h 05mDelta

Mon 10/277:40 amSAN - DLH

1 stop5h 50mDelta

Deal found 10/8

$627

Cheap flight deals from Duluth to San Diego

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$323 (Delta)
Popular in	May
Cheapest in	January
Average price	$323

Provider with most accurate pricing for Duluth Intl-San Diego flight deals.

Search Deals

Provider most trusted by Cheapflights users for Duluth Intl-San Diego flights.

Search Deals

From Duluth Intl to San Diego

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($62 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Fri 3/13

11:26 am-6:37 pm

1 stop9h 11m

San Diego

Fri 3/20

9:55 pm-10:44 am

2 stops10h 49m

$334

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Thu 10/23

9:45 am-3:50 pm

1 stop8h 05m

San Diego

Mon 10/27

10:00 pm-2:31 pm

2 stops14h 31m

$374

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Sat 2/14

12:00 pm-10:00 pm

2 stops12h 00m

San Diego

Sat 2/21

10:30 pm-11:07 am

2 stops10h 37m

$464

DuluthSan Diego

DLH - SAN

DLHSAN

Duluth Intl

Mon 1/12

3:05 pm-9:40 am

1 stop20h 35m

San Diego

Thu 1/15

6:55 pm-2:30 pm

2 stops17h 35m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Compare providers for flights from Duluth to San Diego

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to San Diego in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 Duluth-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-San Diego flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Duluth-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 Duluth-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 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.

Reviews of airlines servicing San Diego

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

7,969 reviews

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

7,969 reviews

Delta

8.0

Very good

7,969 reviews

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

How long is the flight from Duluth to San Diego?
United Airlines and Delta can get you from Duluth to San Diego in just under 9h 11m. Your travel time can differ by up to 2h 49m. 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.

See more FAQs

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Complete your trip

San Diego car rentals

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Other flights to San Diego

Top airline flying from Duluth to San Diego

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$278	Average$393	FlexibilityNo cancel fee	On-timeN/A

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$334+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Duluth to San Diego with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Duluth to San Diego

Cheapest flights from Duluth to San DiegoExplore 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 October 10, 2025.

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 October 10, 2025.

Cheap flight deals from Duluth to San Diego

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Duluth to San Diego that are best for you.

Compare providers for flights from Duluth 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 Duluth to San Diego in October.

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.

Reviews of airlines servicing San Diego

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.

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?

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

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

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

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

Traveling to a place near San Diego?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Duluth to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Duluth to San Diego

100% Free

Book with Flexibility

Travel Smart

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 October 10, 2025.