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Duluth

$338+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DLH
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
1 adult, Economy
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Cheap 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 May 28, 2026.

This Delta deal was found by Cheapflights users on 5/26. 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 8/316:06 am
SFO
-
DLH
1 stop7h 25m
Delta
Sat 9/511:41 am
DLH
-
SFO
1 stop7h 34m
Delta
Deal found 5/26$338
This Delta deal was found by Cheapflights users on 5/26. 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 9/23:37 pm
SFO
-
DLH
1 stop5h 04m
Delta
Sun 9/65:15 am
DLH
-
SFO
1 stop7h 47m
Delta
Deal found 5/26$393
This Delta deal was found by Cheapflights users on 5/26. 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 9/110:45 am
SFO
-
DLH
2 stops9h 56m
Delta
Sat 9/511:41 am
DLH
-
SFO
1 stop7h 34m
Delta
Deal found 5/26$397
This Delta deal was found by Cheapflights users on 5/26. 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 8/316:06 am
SFO
-
DLH
1 stop7h 25m
Delta
Tue 9/85:10 am
DLH
-
SFO
2 stops14h 16m
Delta
Deal found 5/26$413
This Delta deal was found by Cheapflights users on 5/26. 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 8/316:06 am
SFO
-
DLH
1 stop7h 25m
Delta
Sun 9/65:15 am
DLH
-
SFO
2 stops16h 28m
Delta
Deal found 5/26$417
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Sun 9/612:35 am
SFO
-
DLH
1 stop8h 07m
United Airlines
Sat 9/126:23 pm
DLH
-
SFO
1 stop8h 07m
United Airlines
Deal found 5/24$420
This Delta deal was found by Cheapflights users on 5/26. 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 8/316:06 am
SFO
-
DLH
1 stop7h 25m
Delta
Wed 9/95:10 am
DLH
-
SFO
2 stops12h 01m
Delta
Deal found 5/26$422
This Delta deal was found by Cheapflights users on 5/26. 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 7/183:27 pm
SFO
-
DLH
1 stop5h 22m
Delta
Tue 7/215:00 am
DLH
-
SFO
1 stop8h 32m
Delta
Deal found 5/26$423
This Delta deal was found by Cheapflights users on 5/27. 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 8/76:06 am
SFO
-
DLH
1 stop7h 25m
Delta
Wed 8/124:11 pm
DLH
-
SFO
1 stop6h 51m
Delta
Deal found 5/27$427
This United Airlines deal was found by Cheapflights users on 5/24. 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 10/285:20 am
SFO
-
DLH
1 stop7h 13m
United Airlines
Sat 10/315:00 am
DLH
-
SFO
1 stop10h 42m
United Airlines
Deal found 5/24$438
This Delta deal was found by Cheapflights users on 5/26. 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 9/26:00 am
SFO
-
DLH
2 stops11h 44m
Delta
Sat 9/58:18 am
DLH
-
SFO
1 stop6h 51m
Delta
Deal found 5/26$440
This Delta deal was found by Cheapflights users on 5/26. 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 9/312:12 am
SFO
-
DLH
1 stop13h 19m
Delta
Sat 9/511:41 am
DLH
-
SFO
1 stop7h 34m
Delta
Deal found 5/26$447

Find 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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(Delta)

Popular in

June

Cheapest in

October

Average price

$558
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. 11% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 28, 2026.
Use the filters below to find and compare flights from San Francisco to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Sat 7/18

3:27 pm-10:49 pm

1 stop5h 22m

Duluth Intl

Tue 7/21

5:00 am-11:32 am

1 stop8h 32m

$423

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Fri 8/7

6:06 am-3:31 pm

1 stop7h 25m

Duluth Intl

Wed 8/12

4:11 pm-9:02 pm

1 stop6h 51m

$427

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Fri 8/21

12:55 am-10:42 am

1 stop7h 47m

Duluth Intl

Sat 8/29

6:23 pm-12:30 am

1 stop8h 07m

$609

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Fri 8/14

6:06 am-3:31 pm

1 stop7h 25m

Duluth Intl

Mon 8/17

8:18 am-1:09 pm

1 stop6h 51m

$612

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Sun 7/19

6:00 am-3:42 pm

1 stop7h 42m

Duluth Intl

Sat 7/25

5:00 am-11:32 am

1 stop8h 32m

$627

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Sat 7/18

12:50 am-11:23 pm

1 stop20h 33m

Duluth Intl

Sat 7/25

7:03 am-9:46 pm

2 stops16h 43m

$767
Cheapest one-way
Quickest one-way

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 6/4

6:15 am-3:48 pm

1 stop7h 33m

$632

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Wed 6/3

10:40 am-11:23 pm

2 stops10h 43m

$720

San FranciscoDuluth

SFO - DLH

SFODLH

San Francisco

Thu 6/4

8:17 am-11:23 pm

3 stops13h 06m

$1,638

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Sorted by cheapest first

Compare providers for flights from San Francisco to Duluth

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 San Francisco to Duluth in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 San Francisco-Duluth flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Duluth flight deals on Cheapflights vs. FlightHub >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 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 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, October is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $285). Flying from San Francisco to Duluth in June is currently the most expensive (average of $618). 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.

How much does it cost to fly round-trip from San Francisco to Duluth?

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 May 28, 2026.
Peruse reviews from past customers who have flown with Delta and United Airlines 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
8,423 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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
8,423 reviews
Delta
7.9
Good
8,423 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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
9,751 reviews
Delta
7.9
Good
8,423 reviews

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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 5h 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, Delta ($278), and United Airlines ($303) offers the cheapest pricing from San Francisco to Duluth. Users have found that Delta is 37% 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, October is the cheapest month in which you can book a flight from San Francisco to Duluth (average of $285). Flying from San Francisco to Duluth in June is currently the most expensive (average of $618). 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

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Top 2 airlines flying from San Francisco to Duluth

Discover the top 2 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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$458FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$303Average$458FlexibilityNo cancel feeOn-time69%

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