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$278+ Cheap flights from San Francisco to Duluth (SFO - DLH)

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DLH
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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Find flight deals from San Francisco to Duluth

Cheapest flights from San Francisco to Duluth
Explore the most affordable flight options available from San Francisco to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2025.

This Delta deal was found by Cheapflights users on 11/11. 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 12/103:33 pmSFO - DLH
1 stop6h 26mDelta
Wed 12/174:24 pmDLH - SFO
1 stop6h 04mDelta
Deal found 11/11$278
This Delta deal was found by Cheapflights users on 11/10. 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.
Fri 11/285:45 amSFO - DLH
1 stop7h 53mDelta
Sun 12/77:45 amDLH - SFO
1 stop7h 48mDelta
Deal found 11/10$313
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Mon 11/1010:40 pmSFO - DLH
1 stop9h 58mUnited Airlines
Mon 11/173:06 pmDLH - SFO
1 stop8h 16mUnited Airlines
Deal found 11/9$536
This United Airlines deal was found by Cheapflights users on 11/10. 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 11/115:10 amSFO - DLH
1 stop7h 21mUnited Airlines
Mon 11/173:06 pmDLH - SFO
1 stop8h 16mUnited Airlines
Deal found 11/10$541
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amSFO - DLH
2 stops13h 59mUnited Airlines
Wed 12/172:57 pmDLH - SFO
3 stops23h 17mUnited Airlines
Deal found 11/11$626
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:10 pmSFO - DLH
2 stops17h 12mUnited Airlines
Fri 12/122:57 pmDLH - SFO
2 stops22h 42mUnited Airlines
Deal found 11/11$796

Cheap flight deals from San Francisco to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 November 12, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$278
(Delta)

Popular in

February

Cheapest in

April

Average price

$426
Provider with most accurate pricing for San Francisco-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Duluth Intl flights.
Search Deals
From San Francisco to Duluth Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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 November 12, 2025.
Use the filters below to find and compare flights from San Francisco to Duluth that are best for you.

Fly from

San Francisco

Fly to

Duluth

Route

Depart

Return

Price

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Fri 3/6

12:40 am-11:33 am

1 stop8h 53m

Duluth Intl

Wed 3/11

4:20 pm-11:55 pm

1 stop9h 35m

$278

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Wed 12/10

3:33 pm-11:59 pm

1 stop6h 26m

Duluth Intl

Wed 12/17

4:24 pm-8:28 pm

1 stop6h 04m

$278

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Fri 11/28

5:45 am-3:38 pm

1 stop7h 53m

Duluth Intl

Sun 12/7

7:45 am-1:33 pm

1 stop7h 48m

$313

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 12/18

5:55 am-3:44 pm

1 stop7h 49m

$323

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 12/18

7:05 am-10:55 pm

2 stops13h 50m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

  • Most accurate provider: When it comes to deals on San Francisco-Duluth flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on San Francisco-Duluth flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from San Francisco-Duluth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Duluth flights, Cheapflights users trust Expedia the most. Expedia 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 Francisco-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 Francisco to Duluth

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

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

Currently, July is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $188). Flying from San Francisco to Duluth in January is currently the most expensive (average of $504). 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 SFO to DLH?

Find hourly flight availability from San Francisco 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 November 12, 2025.

When flying from San Francisco to Duluth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 12% versus a flight in the evening.

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 November 12, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and Sun Country Air from San Francisco to Duluth to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

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
United Airlines
7.4
Good
9,015 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

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
Sun Country Air
6.9
Okay
336 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

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 Francisco 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 Francisco to Duluth?

    Departing from San Francisco to Duluth will take you 8h 53m. Airlines will cover a distance of 1656 mi.

  • What are the cheapest airlines flying from San Francisco to Duluth round-trip?

    According to our current data, Sun Country Air ($188), Delta ($278), and United Airlines ($278) offers the cheapest pricing from San Francisco to Duluth. Users have found that Sun Country Air is 57% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $188). Flying from San Francisco to Duluth in January is currently the most expensive (average of $504). 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 3 airlines flying from San Francisco to Duluth

Discover the top 3 airlines that operate flights from San Francisco 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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$188Average$368FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$278Average$561FlexibilityNo cancel feeOn-time69%
DeltaCheapest$278Average$444FlexibilityNo cancel feeOn-timeN/A

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