$439+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — SAN
Nov 19 — Nov 261
Round-trip
1 adult, Economy
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Find cheap flights from Duluth to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Duluth to San Diego
Cheapest
Best
Last-minute
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 20, 2026.
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 20, 2026.
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/313:06 pm -
1 stop9h 34m
Wed 11/42:08 pm -
1 stop7h 06m
Deal found 10/16![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/124:25 pm -
1 stop5h 46m
Mon 11/163:40 pm -
1 stop5h 15m
Deal found 10/18![Delta logo]()
$498
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/123:06 pm -
1 stop9h 34m
Mon 11/167:41 pm -
2 stops13h 00m
Deal found 10/19![United Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/33:06 pm -
1 stop9h 34m
Sat 11/72:08 pm -
1 stop7h 06m
Deal found 10/19![United Airlines logo]()
$578
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/23:06 pm -
2 stops11h 13m
Fri 11/66:30 pm -
2 stops18h 00m
Deal found 10/19![United Airlines logo]()
$752
Best flights from Duluth to San DiegoDiscover 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 20, 2026.
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 20, 2026.
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 3/254:15 pm -
2 stops9h 32m
Mon 3/2910:40 pm -
2 stops10h 35m
Deal found 10/19![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/313:06 pm -
1 stop9h 34m
Wed 11/42:08 pm -
1 stop7h 06m
Deal found 10/16![United Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/124:25 pm -
1 stop5h 46m
Mon 11/1610:10 pm -
2 stops11h 16m
Deal found 10/18![Delta logo]()
$504
This United Airlines deal was found by Cheapflights users on 10/15. 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 2/22:59 pm -
1 stop9h 38m
Sat 2/66:50 am -
1 stop9h 41m
Deal found 10/15![United Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 10/20. 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.
Thu 3/254:15 pm -
2 stops9h 32m
Sun 4/46:15 am -
2 stops7h 29m
Deal found 10/20![Delta logo]()
$509
Last-minute flights from Duluth to San DiegoDiscover last-minute flight deals from Duluth to San Diego. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from Duluth to San Diego. Data last updated October 20, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/313:06 pm -
1 stop9h 34m
Wed 11/42:08 pm -
1 stop7h 06m
Deal found 10/16![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/23:06 pm -
2 stops11h 13m
Fri 11/66:30 pm -
2 stops18h 00m
Deal found 10/19![United Airlines logo]()
$752
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/33:06 pm -
1 stop9h 34m
Sat 11/72:08 pm -
1 stop7h 06m
Deal found 10/19![United Airlines logo]()
$578
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/124:25 pm -
1 stop5h 46m
Mon 11/163:40 pm -
1 stop5h 15m
Deal found 10/18![Delta logo]()
$498
This United Airlines deal was found by Cheapflights users on 10/19. 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 11/123:06 pm -
1 stop9h 34m
Mon 11/167:41 pm -
2 stops13h 00m
Deal found 10/19![United Airlines logo]()
$549
Find 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 October 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $439 (Delta) |
Popular in | May |
Cheapest in | January |
Average price | $453 |
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 7,457,451 searches. Data last updated October 20, 2026.
Use the filters below to find and compare flights from Duluth to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Thu 3/25
4:15 pm-11:47 pm
2 stops9h 32m
San Diego
Mon 3/29
10:40 pm-11:15 am
2 stops10h 35m
$439
Quickest round-trip
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Sat 10/31
3:06 pm-10:40 pm
1 stop9h 34m
San Diego
Wed 11/4
2:08 pm-11:14 pm
1 stop7h 06m
$458
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Thu 11/12
4:25 pm-8:11 pm
1 stop5h 46m
San Diego
Mon 11/16
10:10 pm-11:26 am
2 stops11h 16m
$504
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Tue 2/2
2:59 pm-10:37 pm
1 stop9h 38m
San Diego
Sat 2/6
6:50 am-6:31 pm
1 stop9h 41m
$508
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Thu 3/25
4:15 pm-11:47 pm
2 stops9h 32m
San Diego
Sun 4/4
6:15 am-3:44 pm
2 stops7h 29m
$509
Sorted by cheapest first
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
DLH-SAN
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
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 October 20, 2026.
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.
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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Duluth and San Diego flights
Browse other Duluth and San Diego flight options. Last updated on October 20, 2026.
Other flights from Duluth
Browse through other flights departing from Duluth. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.
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Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.
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 7,457,451 searches. Data last updated October 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$472 | FlexibilityNo cancel fee | On-timeN/A |