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$253+ Cheap flights from San Francisco to Duluth (SFO - 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DLH
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$303
(Delta)

One-way from

$253
(United Airlines)

Popular in

February

Cheapest in

April

Average price

$497
From San Francisco to Duluth Intl
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One-way flight from San Francisco to Duluth Intl
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Highest demand for flights based on searches. 14% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2212:45 amSFO - DLH
1 stop7h 22mDelta
Mon 9/294:20 pmDLH - SFO
1 stop7h 07mDelta
Deal found 9/16$408
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1612:45 amSFO - DLH
1 stop7h 22mDelta
Mon 9/224:20 pmDLH - SFO
1 stop7h 07mDelta
Deal found 9/15$443
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/25:15 amSFO - DLH
1 stop7h 17mUnited Airlines
Mon 10/69:45 amDLH - SFO
1 stop9h 35mUnited Airlines
Deal found 9/16$584
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amSFO - DLH
1 stop7h 30mDelta
Sat 1/34:23 pmDLH - SFO
1 stop9h 29mDelta
Deal found 9/16$588
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 9/2311:03 pmSFO - DLH
2 stops17h 27mUnited Airlines
Mon 9/298:00 amDLH - SFO
1 stop9h 30mUnited Airlines
Deal found 9/16$592
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3012:45 amSFO - DLH
1 stop7h 22mDelta
Sun 10/57:50 amDLH - SFO
1 stop7h 55mDelta
Deal found 9/15$632
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:45 amSFO - DLH
1 stop7h 22mDelta
Sun 10/57:50 amDLH - SFO
1 stop7h 55mDelta
Deal found 9/16$672
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/111:33 pmSFO - DLH
1 stop9h 12mUnited Airlines
Sun 10/511:20 amDLH - SFO
1 stop23h 36mUnited Airlines
Deal found 9/15$692

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 September 17, 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

Tue 9/23

11:10 pm-10:45 am

1 stop9h 35m

Duluth Intl

Mon 9/29

11:20 am-5:20 pm

1 stop8h 00m

$408

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 10/2

5:15 am-2:32 pm

1 stop7h 17m

Duluth Intl

Mon 10/6

9:45 am-5:20 pm

1 stop9h 35m

$584

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Tue 9/30

12:45 am-10:07 am

1 stop7h 22m

Duluth Intl

Sun 10/5

7:50 am-1:45 pm

1 stop7h 55m

$632

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Mon 9/22

12:45 am-10:07 am

1 stop7h 22m

Duluth Intl

Mon 9/29

4:20 pm-11:29 pm

2 stops9h 09m

$652

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Wed 10/1

11:33 pm-10:45 am

1 stop9h 12m

Duluth Intl

Sun 10/5

11:20 am-8:56 am

1 stop23h 36m

$692

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Mon 9/22

12:12 pm-10:43 pm

1 stop8h 31m

Duluth Intl

Thu 9/25

7:50 am-1:45 pm

1 stop7h 55m

$986

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Mon 9/22

9:05 pm-10:05 pm

2 stops23h 00m

Duluth Intl

Thu 9/25

11:20 am-6:28 pm

1 stop9h 08m

$996

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 10/23

6:30 am-6:37 pm

1 stop10h 07m

$253

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Sat 11/8

12:45 am-11:21 am

1 stop8h 36m

$253

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Sun 11/9

5:10 am-2:31 pm

1 stop7h 21m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 12 results
1
2

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, January is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $339). Flying from San Francisco to Duluth in June is currently the most expensive (average of $476). 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 September 17, 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 13% 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 September 17, 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
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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
330 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

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 7h 22m. Airlines will cover a distance of 1656 mi. This flight may include one or multiple stops.

  • 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 56% 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, January is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $339). Flying from San Francisco to Duluth in June is currently the most expensive (average of $476). 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$188Average$368FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$278Average$561FlexibilityNo cancel feeOn-time69%
DeltaCheapest$278Average$445FlexibilityNo cancel feeOn-timeN/A

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