$348+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — SAN
Sep 21 — Sep 281
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
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Best
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One-way
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 August 22, 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 August 22, 2026.
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/114:11 pm -
1 stop6h 26m
Sun 9/133:20 pm -
1 stop5h 15m
Deal found 8/20![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/21. 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 11/1212:34 pm -
2 stops8h 42m
Wed 11/186:15 am -
1 stop7h 30m
Deal found 8/21![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 8/18. 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.
Tue 9/18:18 am -
1 stop6h 58m
Sat 9/53:30 pm -
1 stop5h 11m
Deal found 8/18![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:11 pm -
1 stop8h 59m
Tue 9/82:15 pm -
1 stop7h 05m
Deal found 8/20![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/48:18 am -
1 stop6h 58m
Tue 9/810:30 pm -
2 stops10h 33m
Deal found 8/20![Delta logo]()
$459
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 August 22, 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 August 22, 2026.
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/114:11 pm -
1 stop6h 26m
Sun 9/133:20 pm -
1 stop5h 15m
Deal found 8/20![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/21. 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 11/1212:34 pm -
2 stops8h 42m
Wed 11/186:15 am -
1 stop7h 30m
Deal found 8/21![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 8/18. 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.
Tue 9/111:41 am -
2 stops13h 19m
Sat 9/53:30 pm -
1 stop5h 11m
Deal found 8/18![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 8/21. 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.
Sat 9/511:41 am -
2 stops13h 19m
Wed 9/911:54 am -
1 stop5h 31m
Deal found 8/21![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/48:18 am -
1 stop6h 58m
Tue 9/810:30 pm -
2 stops10h 33m
Deal found 8/20![Delta logo]()
$459
Last-minute flights from Duluth to San DiegoDiscover last-minute flight deals from Duluth to San Diego. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Duluth to San Diego. Data last updated August 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/18. 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.
Tue 9/18:18 am -
1 stop6h 58m
Sat 9/53:30 pm -
1 stop5h 11m
Deal found 8/18![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:11 pm -
1 stop8h 59m
Tue 9/82:15 pm -
1 stop7h 05m
Deal found 8/20![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/48:18 am -
1 stop6h 58m
Tue 9/810:30 pm -
2 stops10h 33m
Deal found 8/20![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 9/114:11 pm -
1 stop6h 26m
Sun 9/133:20 pm -
1 stop5h 15m
Deal found 8/20![Delta logo]()
$348
One-way flights from Duluth to San DiegoSearch for one-way flight options from Duluth to San Diego. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Duluth to San Diego. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/21. 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 11/186:23 am -
2 stops16h 13m
Deal found 8/21![United Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 8/19. 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.
Wed 8/268:18 am -
1 stop6h 58m
Deal found 8/19![Delta logo]()
$557
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 8/263:11 pm -
3 stops23h 02m
Deal found 8/19![United Airlines logo]()
$814
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (Delta) |
Popular in | May |
Cheapest in | November |
Average price | $533 |
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 August 22, 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
Quickest round-trip
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Fri 9/11
4:11 pm-8:37 pm
1 stop6h 26m
San Diego
Sun 9/13
3:20 pm-10:35 pm
1 stop5h 15m
$348
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Thu 11/12
12:34 pm-7:16 pm
2 stops8h 42m
San Diego
Wed 11/18
6:15 am-3:45 pm
1 stop7h 30m
$384
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Tue 9/1
11:41 am-11:00 pm
2 stops13h 19m
San Diego
Sat 9/5
3:30 pm-10:41 pm
1 stop5h 11m
$424
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Sat 9/5
11:41 am-11:00 pm
2 stops13h 19m
San Diego
Wed 9/9
11:54 am-7:25 pm
1 stop5h 31m
$424
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Fri 9/4
8:18 am-1:16 pm
1 stop6h 58m
San Diego
Tue 9/8
10:30 pm-11:03 am
2 stops10h 33m
$459
Cheapest one-way
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Wed 11/18
6:23 am-8:36 pm
2 stops16h 13m
$366
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Wed 11/18
5:04 am-10:57 am
1 stop7h 53m
$373
Quickest one-way
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Wed 8/26
8:18 am-1:16 pm
1 stop6h 58m
$557
DuluthSan Diego
DLH Duluth Intl - SAN San Diego
DLHSAN
Duluth Intl
Wed 8/26
3:11 pm-12:13 pm
3 stops23h 02m
$814
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 August.
| 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.
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 August 22, 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.
Entertainment
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Entertainment
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
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
Coronado
Poway
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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Duluth and San Diego flights
Browse other Duluth and San Diego flight options. Last updated on August 22, 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 August 22, 2026.
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Other flights 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$458 | FlexibilityNo cancel fee | On-timeN/A |